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- /* asn.c
- *
- * Copyright (C) 2006-2017 wolfSSL Inc.
- *
- * This file is part of wolfSSL.
- *
- * wolfSSL is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * wolfSSL is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
- */
- #ifdef HAVE_CONFIG_H
- #include <config.h>
- #endif
- #include <wolfssl/wolfcrypt/settings.h>
- /*
- ASN Options:
- * NO_ASN_TIME: Disables time parts of the ASN code for systems without an RTC
- or wishing to save space.
- * IGNORE_NAME_CONSTRAINTS: Skip ASN name checks.
- * ASN_DUMP_OID: Allows dump of OID information for debugging.
- * RSA_DECODE_EXTRA: Decodes extra information in RSA public key.
- * WOLFSSL_CERT_GEN: Cert generation. Saves extra certificate info in GetName.
- * WOLFSSL_NO_OCSP_OPTIONAL_CERTS: Skip optional OCSP certs (responder issuer
- must still be trusted)
- * WOLFSSL_NO_TRUSTED_CERTS_VERIFY: Workaround for situation where entire cert
- chain is not loaded. This only matches on subject and public key and
- does not perform a PKI validation, so it is not a secure solution.
- Only enabled for OCSP.
- * WOLFSSL_NO_OCSP_ISSUER_CHECK: Can be defined for backwards compatibility to
- disable checking of OCSP subject hash with issuer hash.
- * WOLFSSL_ALT_CERT_CHAINS: Allows matching multiple CA's to validate
- chain based on issuer and public key (includes signature confirmation)
- */
- #ifndef NO_ASN
- #ifdef HAVE_RTP_SYS
- #include "os.h" /* dc_rtc_api needs */
- #include "dc_rtc_api.h" /* to get current time */
- #endif
- #include <wolfssl/wolfcrypt/asn.h>
- #include <wolfssl/wolfcrypt/coding.h>
- #include <wolfssl/wolfcrypt/md2.h>
- #include <wolfssl/wolfcrypt/hmac.h>
- #include <wolfssl/wolfcrypt/error-crypt.h>
- #include <wolfssl/wolfcrypt/pwdbased.h>
- #include <wolfssl/wolfcrypt/des3.h>
- #include <wolfssl/wolfcrypt/logging.h>
- #include <wolfssl/wolfcrypt/random.h>
- #include <wolfssl/wolfcrypt/hash.h>
- #ifdef NO_INLINE
- #include <wolfssl/wolfcrypt/misc.h>
- #else
- #define WOLFSSL_MISC_INCLUDED
- #include <wolfcrypt/src/misc.c>
- #endif
- #ifndef NO_PWDBASED
- #include <wolfssl/wolfcrypt/aes.h>
- #endif
- #ifndef NO_RC4
- #include <wolfssl/wolfcrypt/arc4.h>
- #endif
- #ifdef HAVE_NTRU
- #include "libntruencrypt/ntru_crypto.h"
- #endif
- #if defined(WOLFSSL_SHA512) || defined(WOLFSSL_SHA384)
- #include <wolfssl/wolfcrypt/sha512.h>
- #endif
- #ifndef NO_SHA256
- #include <wolfssl/wolfcrypt/sha256.h>
- #endif
- #ifdef HAVE_ECC
- #include <wolfssl/wolfcrypt/ecc.h>
- #endif
- #ifdef HAVE_ED25519
- #include <wolfssl/wolfcrypt/ed25519.h>
- #endif
- #ifndef NO_RSA
- #include <wolfssl/wolfcrypt/rsa.h>
- #endif
- #ifdef WOLFSSL_DEBUG_ENCODING
- #if defined(FREESCALE_MQX) || defined(FREESCALE_KSDK_MQX)
- #if MQX_USE_IO_OLD
- #include <fio.h>
- #else
- #include <nio.h>
- #endif
- #else
- #include <stdio.h>
- #endif
- #endif
- #ifndef NO_ASN_TIME
- /* two byte date/time, add to value */
- static INLINE void GetTime(int* value, const byte* date, int* idx)
- {
- int i = *idx;
- *value += btoi(date[i++]) * 10;
- *value += btoi(date[i++]);
- *idx = i;
- }
- #endif /* !NO_ASN_TIME */
- #ifdef _MSC_VER
- /* 4996 warning to use MS extensions e.g., strcpy_s instead of XSTRNCPY */
- #pragma warning(disable: 4996)
- #endif
- #define ERROR_OUT(err, eLabel) { ret = (err); goto eLabel; }
- WOLFSSL_LOCAL int GetLength(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx)
- {
- int length = 0;
- word32 idx = *inOutIdx;
- byte b;
- *len = 0; /* default length */
- if ((idx + 1) > maxIdx) { /* for first read */
- WOLFSSL_MSG("GetLength bad index on input");
- return BUFFER_E;
- }
- b = input[idx++];
- if (b >= ASN_LONG_LENGTH) {
- word32 bytes = b & 0x7F;
- if ((idx + bytes) > maxIdx) { /* for reading bytes */
- WOLFSSL_MSG("GetLength bad long length");
- return BUFFER_E;
- }
- while (bytes--) {
- b = input[idx++];
- length = (length << 8) | b;
- }
- }
- else
- length = b;
- if ((idx + length) > maxIdx) { /* for user of length */
- WOLFSSL_MSG("GetLength value exceeds buffer length");
- return BUFFER_E;
- }
- *inOutIdx = idx;
- if (length > 0)
- *len = length;
- return length;
- }
- /* Get the DER/BER encoding of an ASN.1 header.
- *
- * input Buffer holding DER/BER encoded data.
- * tag ASN.1 tag value expected in header.
- * inOutIdx Current index into buffer to parse.
- * len The number of bytes in the ASN.1 data.
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_PARSE_E when the expected tag is not found or length is invalid.
- * Otherwise, the number of bytes in the ASN.1 data.
- */
- static int GetASNHeader(const byte* input, byte tag, word32* inOutIdx, int* len,
- word32 maxIdx)
- {
- word32 idx = *inOutIdx;
- byte b;
- int length;
- if ((idx + 1) > maxIdx)
- return BUFFER_E;
- b = input[idx++];
- if (b != tag)
- return ASN_PARSE_E;
- if (GetLength(input, &idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
- *len = length;
- *inOutIdx = idx;
- return length;
- }
- WOLFSSL_LOCAL int GetSequence(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx)
- {
- return GetASNHeader(input, ASN_SEQUENCE | ASN_CONSTRUCTED, inOutIdx, len,
- maxIdx);
- }
- WOLFSSL_LOCAL int GetSet(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx)
- {
- return GetASNHeader(input, ASN_SET | ASN_CONSTRUCTED, inOutIdx, len,
- maxIdx);
- }
- /* Get the DER/BER encoded ASN.1 NULL element.
- * Ensure that the all fields are as expected and move index past the element.
- *
- * input Buffer holding DER/BER encoded data.
- * inOutIdx Current index into buffer to parse.
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_TAG_NULL_E when the NULL tag is not found.
- * ASN_EXPECT_0_E when the length is not zero.
- * Otherwise, 0 to indicate success.
- */
- static int GetASNNull(const byte* input, word32* inOutIdx, word32 maxIdx)
- {
- word32 idx = *inOutIdx;
- byte b;
- if ((idx + 2) > maxIdx)
- return BUFFER_E;
- b = input[idx++];
- if (b != ASN_TAG_NULL)
- return ASN_TAG_NULL_E;
- if (input[idx++] != 0)
- return ASN_EXPECT_0_E;
- *inOutIdx = idx;
- return 0;
- }
- /* Set the DER/BER encoding of the ASN.1 NULL element.
- *
- * output Buffer to write into.
- * returns the number of bytes added to the buffer.
- */
- static int SetASNNull(byte* output)
- {
- output[0] = ASN_TAG_NULL;
- output[1] = 0;
- return 2;
- }
- /* Get the DER/BER encoding of an ASN.1 BOOLEAN.
- *
- * input Buffer holding DER/BER encoded data.
- * inOutIdx Current index into buffer to parse.
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_PARSE_E when the BOOLEAN tag is not found or length is not 1.
- * Otherwise, 0 to indicate the value was false and 1 to indicate true.
- */
- static int GetBoolean(const byte* input, word32* inOutIdx, word32 maxIdx)
- {
- word32 idx = *inOutIdx;
- byte b;
- if ((idx + 3) > maxIdx)
- return BUFFER_E;
- b = input[idx++];
- if (b != ASN_BOOLEAN)
- return ASN_PARSE_E;
- if (input[idx++] != 1)
- return ASN_PARSE_E;
- b = input[idx++] != 0;
- *inOutIdx = idx;
- return b;
- }
- #ifdef ASN1_SET_BOOLEAN
- /* Set the DER/BER encoding of the ASN.1 NULL element.
- * Note: Function not required as yet.
- *
- * val Boolean value to encode.
- * output Buffer to write into.
- * returns the number of bytes added to the buffer.
- */
- static int SetBoolean(int val, byte* output)
- {
- output[0] = ASN_BOOLEAN;
- output[1] = 1;
- output[2] = val ? -1 : 0;
- return 3;
- }
- #endif
- /* Get the DER/BER encoding of an ASN.1 OCTET_STRING header.
- *
- * input Buffer holding DER/BER encoded data.
- * inOutIdx Current index into buffer to parse.
- * len The number of bytes in the ASN.1 data.
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_PARSE_E when the OCTET_STRING tag is not found or length is
- * invalid.
- * Otherwise, the number of bytes in the ASN.1 data.
- */
- static int GetOctetString(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx)
- {
- return GetASNHeader(input, ASN_OCTET_STRING, inOutIdx, len, maxIdx);
- }
- /* Get the DER/BER encoding of an ASN.1 INTEGER header.
- * Removes the leading zero byte when found.
- *
- * input Buffer holding DER/BER encoded data.
- * inOutIdx Current index into buffer to parse.
- * len The number of bytes in the ASN.1 data (excluding any leading zero).
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_PARSE_E when the INTEGER tag is not found, length is invalid,
- * or invalid use of or missing leading zero.
- * Otherwise, 0 to indicate success.
- */
- static int GetASNInt(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx)
- {
- int ret;
- ret = GetASNHeader(input, ASN_INTEGER, inOutIdx, len, maxIdx);
- if (ret < 0)
- return ret;
- if (*len > 0) {
- /* remove leading zero, unless there is only one 0x00 byte */
- if ((input[*inOutIdx] == 0x00) && (*len > 1)) {
- (*inOutIdx)++;
- (*len)--;
- if (*len > 0 && (input[*inOutIdx] & 0x80) == 0)
- return ASN_PARSE_E;
- }
- }
- return 0;
- }
- /* Get the DER/BER encoding of an ASN.1 INTEGER that has a value of no more than
- * 7 bits.
- *
- * input Buffer holding DER/BER encoded data.
- * inOutIdx Current index into buffer to parse.
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_PARSE_E when the INTEGER tag is not found or length is invalid.
- * Otherwise, the 7-bit value.
- */
- static int GetInteger7Bit(const byte* input, word32* inOutIdx, word32 maxIdx)
- {
- word32 idx = *inOutIdx;
- byte b;
- if ((idx + 3) > maxIdx)
- return BUFFER_E;
- if (input[idx++] != ASN_INTEGER)
- return ASN_PARSE_E;
- if (input[idx++] != 1)
- return ASN_PARSE_E;
- b = input[idx++];
- *inOutIdx = idx;
- return b;
- }
- #ifndef NO_DSA
- static char sigSha1wDsaName[] = "SHAwDSA";
- #endif /* NO_DSA */
- #ifndef NO_RSA
- static char sigMd2wRsaName[] = "MD2wRSA";
- static char sigMd5wRsaName[] = "MD5wRSA";
- static char sigSha1wRsaName[] = "SHAwRSA";
- static char sigSha224wRsaName[] = "SHA224wRSA";
- static char sigSha256wRsaName[] = "SHA256wRSA";
- static char sigSha384wRsaName[] = "SHA384wRSA";
- static char sigSha512wRsaName[] = "SHA512wRSA";
- #endif /* NO_RSA */
- #ifdef HAVE_ECC
- static char sigSha1wEcdsaName[] = "SHAwECDSA";
- static char sigSha224wEcdsaName[] = "SHA224wECDSA";
- static char sigSha256wEcdsaName[] = "SHA256wECDSA";
- static char sigSha384wEcdsaName[] = "SHA384wECDSA";
- static char sigSha512wEcdsaName[] = "SHA512wECDSA";
- #endif /* HAVE_ECC */
- static char sigUnknownName[] = "Unknown";
- /* Get the human readable string for a signature type
- *
- * oid Oid value for signature
- */
- char* GetSigName(int oid) {
- switch (oid) {
- #ifndef NO_DSA
- case CTC_SHAwDSA:
- return sigSha1wDsaName;
- #endif /* NO_DSA */
- #ifndef NO_RSA
- case CTC_MD2wRSA:
- return sigMd2wRsaName;
- case CTC_MD5wRSA:
- return sigMd5wRsaName;
- case CTC_SHAwRSA:
- return sigSha1wRsaName;
- case CTC_SHA224wRSA:
- return sigSha224wRsaName;
- case CTC_SHA256wRSA:
- return sigSha256wRsaName;
- case CTC_SHA384wRSA:
- return sigSha384wRsaName;
- case CTC_SHA512wRSA:
- return sigSha512wRsaName;
- #endif /* NO_RSA */
- #ifdef HAVE_ECC
- case CTC_SHAwECDSA:
- return sigSha1wEcdsaName;
- case CTC_SHA224wECDSA:
- return sigSha224wEcdsaName;
- case CTC_SHA256wECDSA:
- return sigSha256wEcdsaName;
- case CTC_SHA384wECDSA:
- return sigSha384wEcdsaName;
- case CTC_SHA512wECDSA:
- return sigSha512wEcdsaName;
- #endif /* HAVE_ECC */
- default:
- return sigUnknownName;
- }
- }
- #if !defined(NO_DSA) || defined(HAVE_ECC) || \
- (!defined(NO_RSA) && \
- (defined(WOLFSSL_CERT_GEN) || \
- (defined(WOLFSSL_KEY_GEN) && !defined(HAVE_USER_RSA))))
- /* Set the DER/BER encoding of the ASN.1 INTEGER header.
- *
- * len Length of data to encode.
- * firstByte First byte of data, most significant byte of integer, to encode.
- * output Buffer to write into.
- * returns the number of bytes added to the buffer.
- */
- static int SetASNInt(int len, byte firstByte, byte* output)
- {
- word32 idx = 0;
- output[idx++] = ASN_INTEGER;
- if (firstByte & 0x80)
- len++;
- idx += SetLength(len, output + idx);
- if (firstByte & 0x80)
- output[idx++] = 0x00;
- return idx;
- }
- #endif
- #if !defined(NO_DSA) || defined(HAVE_ECC) || defined(WOLFSSL_CERT_GEN) || \
- (defined(WOLFSSL_KEY_GEN) && !defined(NO_RSA) && !defined(HAVE_USER_RSA))
- /* Set the DER/BER encoding of the ASN.1 INTEGER element with an mp_int.
- * The number is assumed to be positive.
- *
- * n Multi-precision integer to encode.
- * maxSz Maximum size of the encoded integer.
- * A negative value indicates no check of length requested.
- * output Buffer to write into.
- * returns BUFFER_E when the data is too long for the buffer.
- * MP_TO_E when encoding the integer fails.
- * Otherwise, the number of bytes added to the buffer.
- */
- static int SetASNIntMP(mp_int* n, int maxSz, byte* output)
- {
- int idx = 0;
- int leadingBit;
- int length;
- int err;
- leadingBit = mp_leading_bit(n);
- length = mp_unsigned_bin_size(n);
- idx = SetASNInt(length, leadingBit ? 0x80 : 0x00, output);
- if (maxSz >= 0 && (idx + length) > maxSz)
- return BUFFER_E;
- err = mp_to_unsigned_bin(n, output + idx);
- if (err != MP_OKAY)
- return MP_TO_E;
- idx += length;
- return idx;
- }
- #endif
- #if !defined(NO_RSA) && defined(HAVE_USER_RSA) && defined(WOLFSSL_CERT_GEN)
- /* Set the DER/BER encoding of the ASN.1 INTEGER element with an mp_int from
- * an RSA key.
- * The number is assumed to be positive.
- *
- * n Multi-precision integer to encode.
- * output Buffer to write into.
- * returns BUFFER_E when the data is too long for the buffer.
- * MP_TO_E when encoding the integer fails.
- * Otherwise, the number of bytes added to the buffer.
- */
- static int SetASNIntRSA(mp_int* n, byte* output)
- {
- int idx = 0;
- int leadingBit;
- int length;
- int err;
- leadingBit = wc_Rsa_leading_bit(n);
- length = wc_Rsa_unsigned_bin_size(n);
- idx = SetASNInt(length, leadingBit ? 0x80 : 0x00, output);
- if ((idx + length) > MAX_RSA_INT_SZ)
- return BUFFER_E;
- err = wc_Rsa_to_unsigned_bin(n, output + idx, length);
- if (err != MP_OKAY)
- return MP_TO_E;
- idx += length;
- return idx;
- }
- #endif /* !NO_RSA && HAVE_USER_RSA && WOLFSSL_CERT_GEN */
- /* Windows header clash for WinCE using GetVersion */
- WOLFSSL_LOCAL int GetMyVersion(const byte* input, word32* inOutIdx,
- int* version, word32 maxIdx)
- {
- word32 idx = *inOutIdx;
- if ((idx + MIN_VERSION_SZ) > maxIdx)
- return ASN_PARSE_E;
- if (input[idx++] != ASN_INTEGER)
- return ASN_PARSE_E;
- if (input[idx++] != 0x01)
- return ASN_VERSION_E;
- *version = input[idx++];
- *inOutIdx = idx;
- return *version;
- }
- #ifndef NO_PWDBASED
- /* Get small count integer, 32 bits or less */
- int GetShortInt(const byte* input, word32* inOutIdx, int* number, word32 maxIdx)
- {
- word32 idx = *inOutIdx;
- word32 len;
- *number = 0;
- /* check for type and length bytes */
- if ((idx + 2) > maxIdx)
- return BUFFER_E;
- if (input[idx++] != ASN_INTEGER)
- return ASN_PARSE_E;
- len = input[idx++];
- if (len > 4)
- return ASN_PARSE_E;
- if (len + idx > maxIdx)
- return ASN_PARSE_E;
- while (len--) {
- *number = *number << 8 | input[idx++];
- }
- *inOutIdx = idx;
- return *number;
- }
- #endif /* !NO_PWDBASED */
- /* May not have one, not an error */
- static int GetExplicitVersion(const byte* input, word32* inOutIdx, int* version,
- word32 maxIdx)
- {
- word32 idx = *inOutIdx;
- WOLFSSL_ENTER("GetExplicitVersion");
- if ((idx + 1) > maxIdx)
- return BUFFER_E;
- if (input[idx++] == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED)) {
- *inOutIdx = ++idx; /* skip header */
- return GetMyVersion(input, inOutIdx, version, maxIdx);
- }
- /* go back as is */
- *version = 0;
- return 0;
- }
- int GetInt(mp_int* mpi, const byte* input, word32* inOutIdx, word32 maxIdx)
- {
- word32 idx = *inOutIdx;
- int ret;
- int length;
- ret = GetASNInt(input, &idx, &length, maxIdx);
- if (ret != 0)
- return ret;
- if (mp_init(mpi) != MP_OKAY)
- return MP_INIT_E;
- if (mp_read_unsigned_bin(mpi, (byte*)input + idx, length) != 0) {
- mp_clear(mpi);
- return ASN_GETINT_E;
- }
- #ifdef HAVE_WOLF_BIGINT
- if (wc_bigint_from_unsigned_bin(&mpi->raw, input + idx, length) != 0) {
- mp_clear(mpi);
- return ASN_GETINT_E;
- }
- #endif /* HAVE_WOLF_BIGINT */
- *inOutIdx = idx + length;
- return 0;
- }
- static int CheckBitString(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx, int zeroBits, byte* unusedBits)
- {
- word32 idx = *inOutIdx;
- int length;
- byte b;
- if ((idx + 1) > maxIdx)
- return BUFFER_E;
- if (input[idx++] != ASN_BIT_STRING)
- return ASN_BITSTR_E;
- if (GetLength(input, &idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
- /* extra sanity check that length is greater than 0 */
- if (length <= 0) {
- WOLFSSL_MSG("Error length was 0 in CheckBitString");
- return BUFFER_E;
- }
- if (idx + 1 > maxIdx) {
- WOLFSSL_MSG("Attempted buffer read larger than input buffer");
- return BUFFER_E;
- }
- b = input[idx];
- if (zeroBits && b != 0x00)
- return ASN_EXPECT_0_E;
- if (b >= 0x08)
- return ASN_PARSE_E;
- if (b != 0) {
- if ((byte)(input[idx + length - 1] << (8 - b)) != 0)
- return ASN_PARSE_E;
- }
- idx++;
- length--; /* length has been checked for greater than 0 */
- *inOutIdx = idx;
- if (len != NULL)
- *len = length;
- if (unusedBits != NULL)
- *unusedBits = b;
- return 0;
- }
- /* RSA (with CertGen or KeyGen) OR ECC OR ED25519 (with CertGen or KeyGen) */
- #if (!defined(NO_RSA) && !defined(HAVE_USER_RSA) && \
- (defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN))) || \
- defined(HAVE_ECC) || \
- (defined(HAVE_ED25519) && \
- (defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN)))
- /* Set the DER/BER encoding of the ASN.1 BIT_STRING header.
- *
- * len Length of data to encode.
- * unusedBits The number of unused bits in the last byte of data.
- * That is, the number of least significant zero bits before a one.
- * The last byte is the most-significant non-zero byte of a number.
- * output Buffer to write into.
- * returns the number of bytes added to the buffer.
- */
- static word32 SetBitString(word32 len, byte unusedBits, byte* output)
- {
- word32 idx = 0;
- output[idx++] = ASN_BIT_STRING;
- idx += SetLength(len + 1, output + idx);
- output[idx++] = unusedBits;
- return idx;
- }
- #endif /* !NO_RSA || HAVE_ECC || HAVE_ED25519 */
- #if defined(WOLFSSL_CERT_GEN) || defined(WOLFSSL_KEY_GEN)
- #if (!defined(NO_RSA) && !defined(HAVE_USER_RSA)) || \
- defined(HAVE_ECC) || defined(HAVE_ED25519)
- #ifdef WOLFSSL_CERT_EXT
- /* Set the DER/BER encoding of the ASN.1 BIT_STRING with a 16-bit value.
- *
- * val 16-bit value to encode.
- * output Buffer to write into.
- * returns the number of bytes added to the buffer.
- */
- static word32 SetBitString16Bit(word16 val, byte* output)
- {
- word32 idx;
- int len;
- byte lastByte;
- byte unusedBits = 0;
- if ((val >> 8) != 0) {
- len = 2;
- lastByte = (byte)(val >> 8);
- }
- else {
- len = 1;
- lastByte = (byte)val;
- }
- while (((lastByte >> unusedBits) & 0x01) == 0x00)
- unusedBits++;
- idx = SetBitString(len, unusedBits, output);
- output[idx++] = (byte)val;
- if (len > 1)
- output[idx++] = (byte)(val >> 8);
- return idx;
- }
- #endif /* WOLFSSL_CERT_EXT */
- #endif /* !NO_RSA || HAVE_ECC || HAVE_ED25519 */
- #endif /* WOLFSSL_CERT_GEN || WOLFSSL_KEY_GEN */
- /* hashType */
- static const byte hashMd2hOid[] = {42, 134, 72, 134, 247, 13, 2, 2};
- static const byte hashMd5hOid[] = {42, 134, 72, 134, 247, 13, 2, 5};
- static const byte hashSha1hOid[] = {43, 14, 3, 2, 26};
- static const byte hashSha224hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 4};
- static const byte hashSha256hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 1};
- static const byte hashSha384hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 2};
- static const byte hashSha512hOid[] = {96, 134, 72, 1, 101, 3, 4, 2, 3};
- /* hmacType */
- static const byte hmacSha224Oid[] = {42, 134, 72, 134, 247, 13, 2, 8};
- static const byte hmacSha256Oid[] = {42, 134, 72, 134, 247, 13, 2, 9};
- static const byte hmacSha384Oid[] = {42, 134, 72, 134, 247, 13, 2, 10};
- static const byte hmacSha512Oid[] = {42, 134, 72, 134, 247, 13, 2, 11};
- /* sigType */
- #ifndef NO_DSA
- static const byte sigSha1wDsaOid[] = {42, 134, 72, 206, 56, 4, 3};
- #endif /* NO_DSA */
- #ifndef NO_RSA
- static const byte sigMd2wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 2};
- static const byte sigMd5wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 4};
- static const byte sigSha1wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 5};
- static const byte sigSha224wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,14};
- static const byte sigSha256wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,11};
- static const byte sigSha384wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,12};
- static const byte sigSha512wRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1,13};
- #endif /* NO_RSA */
- #ifdef HAVE_ECC
- static const byte sigSha1wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 1};
- static const byte sigSha224wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 1};
- static const byte sigSha256wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 2};
- static const byte sigSha384wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 3};
- static const byte sigSha512wEcdsaOid[] = {42, 134, 72, 206, 61, 4, 3, 4};
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- static const byte sigEd25519Oid[] = {43, 101, 112};
- #endif /* HAVE_ED25519 */
- /* keyType */
- #ifndef NO_DSA
- static const byte keyDsaOid[] = {42, 134, 72, 206, 56, 4, 1};
- #endif /* NO_DSA */
- #ifndef NO_RSA
- static const byte keyRsaOid[] = {42, 134, 72, 134, 247, 13, 1, 1, 1};
- #endif /* NO_RSA */
- #ifdef HAVE_NTRU
- static const byte keyNtruOid[] = {43, 6, 1, 4, 1, 193, 22, 1, 1, 1, 1};
- #endif /* HAVE_NTRU */
- #ifdef HAVE_ECC
- static const byte keyEcdsaOid[] = {42, 134, 72, 206, 61, 2, 1};
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- static const byte keyEd25519Oid[] = {43, 101, 112};
- #endif /* HAVE_ED25519 */
- /* curveType */
- #ifdef HAVE_ECC
- /* See "ecc_sets" table in ecc.c */
- #endif /* HAVE_ECC */
- /* blkType */
- static const byte blkAes128CbcOid[] = {96, 134, 72, 1, 101, 3, 4, 1, 2};
- static const byte blkAes192CbcOid[] = {96, 134, 72, 1, 101, 3, 4, 1, 22};
- static const byte blkAes256CbcOid[] = {96, 134, 72, 1, 101, 3, 4, 1, 42};
- static const byte blkDesCbcOid[] = {43, 14, 3, 2, 7};
- static const byte blkDes3CbcOid[] = {42, 134, 72, 134, 247, 13, 3, 7};
- /* keyWrapType */
- static const byte wrapAes128Oid[] = {96, 134, 72, 1, 101, 3, 4, 1, 5};
- static const byte wrapAes192Oid[] = {96, 134, 72, 1, 101, 3, 4, 1, 25};
- static const byte wrapAes256Oid[] = {96, 134, 72, 1, 101, 3, 4, 1, 45};
- /* cmsKeyAgreeType */
- static const byte dhSinglePass_stdDH_sha1kdf_Oid[] =
- {43, 129, 5, 16, 134, 72, 63, 0, 2};
- static const byte dhSinglePass_stdDH_sha224kdf_Oid[] = {43, 129, 4, 1, 11, 0};
- static const byte dhSinglePass_stdDH_sha256kdf_Oid[] = {43, 129, 4, 1, 11, 1};
- static const byte dhSinglePass_stdDH_sha384kdf_Oid[] = {43, 129, 4, 1, 11, 2};
- static const byte dhSinglePass_stdDH_sha512kdf_Oid[] = {43, 129, 4, 1, 11, 3};
- /* ocspType */
- #ifdef HAVE_OCSP
- static const byte ocspBasicOid[] = {43, 6, 1, 5, 5, 7, 48, 1, 1};
- static const byte ocspNonceOid[] = {43, 6, 1, 5, 5, 7, 48, 1, 2};
- #endif /* HAVE_OCSP */
- /* certExtType */
- static const byte extBasicCaOid[] = {85, 29, 19};
- static const byte extAltNamesOid[] = {85, 29, 17};
- static const byte extCrlDistOid[] = {85, 29, 31};
- static const byte extAuthInfoOid[] = {43, 6, 1, 5, 5, 7, 1, 1};
- static const byte extAuthKeyOid[] = {85, 29, 35};
- static const byte extSubjKeyOid[] = {85, 29, 14};
- static const byte extCertPolicyOid[] = {85, 29, 32};
- static const byte extKeyUsageOid[] = {85, 29, 15};
- static const byte extInhibitAnyOid[] = {85, 29, 54};
- static const byte extExtKeyUsageOid[] = {85, 29, 37};
- static const byte extNameConsOid[] = {85, 29, 30};
- /* certAuthInfoType */
- static const byte extAuthInfoOcspOid[] = {43, 6, 1, 5, 5, 7, 48, 1};
- static const byte extAuthInfoCaIssuerOid[] = {43, 6, 1, 5, 5, 7, 48, 2};
- /* certPolicyType */
- static const byte extCertPolicyAnyOid[] = {85, 29, 32, 0};
- /* certKeyUseType */
- static const byte extAltNamesHwNameOid[] = {43, 6, 1, 5, 5, 7, 8, 4};
- /* certKeyUseType */
- static const byte extExtKeyUsageAnyOid[] = {85, 29, 37, 0};
- static const byte extExtKeyUsageServerAuthOid[] = {43, 6, 1, 5, 5, 7, 3, 1};
- static const byte extExtKeyUsageClientAuthOid[] = {43, 6, 1, 5, 5, 7, 3, 2};
- static const byte extExtKeyUsageCodeSigningOid[] = {43, 6, 1, 5, 5, 7, 3, 3};
- static const byte extExtKeyUsageEmailProtectOid[] = {43, 6, 1, 5, 5, 7, 3, 4};
- static const byte extExtKeyUsageTimestampOid[] = {43, 6, 1, 5, 5, 7, 3, 8};
- static const byte extExtKeyUsageOcspSignOid[] = {43, 6, 1, 5, 5, 7, 3, 9};
- /* kdfType */
- static const byte pbkdf2Oid[] = {42, 134, 72, 134, 247, 13, 1, 5, 12};
- /* PKCS5 */
- static const byte pbeSha1Des[] = {42, 134, 72, 134, 247, 13, 1, 5, 10};
- /* PKCS12 */
- static const byte pbeSha1RC4128[] = {42, 134, 72, 134, 247, 13, 1, 12, 1, 1};
- static const byte pbeSha1Des3[] = {42, 134, 72, 134, 247, 13, 1, 12, 1, 3};
- /* returns a pointer to the OID string on success and NULL on fail */
- const byte* OidFromId(word32 id, word32 type, word32* oidSz)
- {
- const byte* oid = NULL;
- *oidSz = 0;
- switch (type) {
- case oidHashType:
- switch (id) {
- case MD2h:
- oid = hashMd2hOid;
- *oidSz = sizeof(hashMd2hOid);
- break;
- case MD5h:
- oid = hashMd5hOid;
- *oidSz = sizeof(hashMd5hOid);
- break;
- case SHAh:
- oid = hashSha1hOid;
- *oidSz = sizeof(hashSha1hOid);
- break;
- case SHA224h:
- oid = hashSha224hOid;
- *oidSz = sizeof(hashSha224hOid);
- break;
- case SHA256h:
- oid = hashSha256hOid;
- *oidSz = sizeof(hashSha256hOid);
- break;
- case SHA384h:
- oid = hashSha384hOid;
- *oidSz = sizeof(hashSha384hOid);
- break;
- case SHA512h:
- oid = hashSha512hOid;
- *oidSz = sizeof(hashSha512hOid);
- break;
- }
- break;
- case oidSigType:
- switch (id) {
- #ifndef NO_DSA
- case CTC_SHAwDSA:
- oid = sigSha1wDsaOid;
- *oidSz = sizeof(sigSha1wDsaOid);
- break;
- #endif /* NO_DSA */
- #ifndef NO_RSA
- case CTC_MD2wRSA:
- oid = sigMd2wRsaOid;
- *oidSz = sizeof(sigMd2wRsaOid);
- break;
- case CTC_MD5wRSA:
- oid = sigMd5wRsaOid;
- *oidSz = sizeof(sigMd5wRsaOid);
- break;
- case CTC_SHAwRSA:
- oid = sigSha1wRsaOid;
- *oidSz = sizeof(sigSha1wRsaOid);
- break;
- case CTC_SHA224wRSA:
- oid = sigSha224wRsaOid;
- *oidSz = sizeof(sigSha224wRsaOid);
- break;
- case CTC_SHA256wRSA:
- oid = sigSha256wRsaOid;
- *oidSz = sizeof(sigSha256wRsaOid);
- break;
- case CTC_SHA384wRSA:
- oid = sigSha384wRsaOid;
- *oidSz = sizeof(sigSha384wRsaOid);
- break;
- case CTC_SHA512wRSA:
- oid = sigSha512wRsaOid;
- *oidSz = sizeof(sigSha512wRsaOid);
- break;
- #endif /* NO_RSA */
- #ifdef HAVE_ECC
- case CTC_SHAwECDSA:
- oid = sigSha1wEcdsaOid;
- *oidSz = sizeof(sigSha1wEcdsaOid);
- break;
- case CTC_SHA224wECDSA:
- oid = sigSha224wEcdsaOid;
- *oidSz = sizeof(sigSha224wEcdsaOid);
- break;
- case CTC_SHA256wECDSA:
- oid = sigSha256wEcdsaOid;
- *oidSz = sizeof(sigSha256wEcdsaOid);
- break;
- case CTC_SHA384wECDSA:
- oid = sigSha384wEcdsaOid;
- *oidSz = sizeof(sigSha384wEcdsaOid);
- break;
- case CTC_SHA512wECDSA:
- oid = sigSha512wEcdsaOid;
- *oidSz = sizeof(sigSha512wEcdsaOid);
- break;
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case CTC_ED25519:
- oid = sigEd25519Oid;
- *oidSz = sizeof(sigEd25519Oid);
- break;
- #endif
- default:
- break;
- }
- break;
- case oidKeyType:
- switch (id) {
- #ifndef NO_DSA
- case DSAk:
- oid = keyDsaOid;
- *oidSz = sizeof(keyDsaOid);
- break;
- #endif /* NO_DSA */
- #ifndef NO_RSA
- case RSAk:
- oid = keyRsaOid;
- *oidSz = sizeof(keyRsaOid);
- break;
- #endif /* NO_RSA */
- #ifdef HAVE_NTRU
- case NTRUk:
- oid = keyNtruOid;
- *oidSz = sizeof(keyNtruOid);
- break;
- #endif /* HAVE_NTRU */
- #ifdef HAVE_ECC
- case ECDSAk:
- oid = keyEcdsaOid;
- *oidSz = sizeof(keyEcdsaOid);
- break;
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case ED25519k:
- oid = keyEd25519Oid;
- *oidSz = sizeof(keyEd25519Oid);
- break;
- #endif /* HAVE_ED25519 */
- default:
- break;
- }
- break;
- #ifdef HAVE_ECC
- case oidCurveType:
- if (wc_ecc_get_oid(id, &oid, oidSz) < 0) {
- WOLFSSL_MSG("ECC OID not found");
- }
- break;
- #endif /* HAVE_ECC */
- case oidBlkType:
- switch (id) {
- case AES128CBCb:
- oid = blkAes128CbcOid;
- *oidSz = sizeof(blkAes128CbcOid);
- break;
- case AES192CBCb:
- oid = blkAes192CbcOid;
- *oidSz = sizeof(blkAes192CbcOid);
- break;
- case AES256CBCb:
- oid = blkAes256CbcOid;
- *oidSz = sizeof(blkAes256CbcOid);
- break;
- case DESb:
- oid = blkDesCbcOid;
- *oidSz = sizeof(blkDesCbcOid);
- break;
- case DES3b:
- oid = blkDes3CbcOid;
- *oidSz = sizeof(blkDes3CbcOid);
- break;
- }
- break;
- #ifdef HAVE_OCSP
- case oidOcspType:
- switch (id) {
- case OCSP_BASIC_OID:
- oid = ocspBasicOid;
- *oidSz = sizeof(ocspBasicOid);
- break;
- case OCSP_NONCE_OID:
- oid = ocspNonceOid;
- *oidSz = sizeof(ocspNonceOid);
- break;
- }
- break;
- #endif /* HAVE_OCSP */
- case oidCertExtType:
- switch (id) {
- case BASIC_CA_OID:
- oid = extBasicCaOid;
- *oidSz = sizeof(extBasicCaOid);
- break;
- case ALT_NAMES_OID:
- oid = extAltNamesOid;
- *oidSz = sizeof(extAltNamesOid);
- break;
- case CRL_DIST_OID:
- oid = extCrlDistOid;
- *oidSz = sizeof(extCrlDistOid);
- break;
- case AUTH_INFO_OID:
- oid = extAuthInfoOid;
- *oidSz = sizeof(extAuthInfoOid);
- break;
- case AUTH_KEY_OID:
- oid = extAuthKeyOid;
- *oidSz = sizeof(extAuthKeyOid);
- break;
- case SUBJ_KEY_OID:
- oid = extSubjKeyOid;
- *oidSz = sizeof(extSubjKeyOid);
- break;
- case CERT_POLICY_OID:
- oid = extCertPolicyOid;
- *oidSz = sizeof(extCertPolicyOid);
- break;
- case KEY_USAGE_OID:
- oid = extKeyUsageOid;
- *oidSz = sizeof(extKeyUsageOid);
- break;
- case INHIBIT_ANY_OID:
- oid = extInhibitAnyOid;
- *oidSz = sizeof(extInhibitAnyOid);
- break;
- case EXT_KEY_USAGE_OID:
- oid = extExtKeyUsageOid;
- *oidSz = sizeof(extExtKeyUsageOid);
- break;
- case NAME_CONS_OID:
- oid = extNameConsOid;
- *oidSz = sizeof(extNameConsOid);
- break;
- }
- break;
- case oidCertAuthInfoType:
- switch (id) {
- case AIA_OCSP_OID:
- oid = extAuthInfoOcspOid;
- *oidSz = sizeof(extAuthInfoOcspOid);
- break;
- case AIA_CA_ISSUER_OID:
- oid = extAuthInfoCaIssuerOid;
- *oidSz = sizeof(extAuthInfoCaIssuerOid);
- break;
- }
- break;
- case oidCertPolicyType:
- switch (id) {
- case CP_ANY_OID:
- oid = extCertPolicyAnyOid;
- *oidSz = sizeof(extCertPolicyAnyOid);
- break;
- }
- break;
- case oidCertAltNameType:
- switch (id) {
- case HW_NAME_OID:
- oid = extAltNamesHwNameOid;
- *oidSz = sizeof(extAltNamesHwNameOid);
- break;
- }
- break;
- case oidCertKeyUseType:
- switch (id) {
- case EKU_ANY_OID:
- oid = extExtKeyUsageAnyOid;
- *oidSz = sizeof(extExtKeyUsageAnyOid);
- break;
- case EKU_SERVER_AUTH_OID:
- oid = extExtKeyUsageServerAuthOid;
- *oidSz = sizeof(extExtKeyUsageServerAuthOid);
- break;
- case EKU_CLIENT_AUTH_OID:
- oid = extExtKeyUsageClientAuthOid;
- *oidSz = sizeof(extExtKeyUsageClientAuthOid);
- break;
- case EKU_CODESIGNING_OID:
- oid = extExtKeyUsageCodeSigningOid;
- *oidSz = sizeof(extExtKeyUsageCodeSigningOid);
- break;
- case EKU_EMAILPROTECT_OID:
- oid = extExtKeyUsageEmailProtectOid;
- *oidSz = sizeof(extExtKeyUsageEmailProtectOid);
- break;
- case EKU_TIMESTAMP_OID:
- oid = extExtKeyUsageTimestampOid;
- *oidSz = sizeof(extExtKeyUsageTimestampOid);
- break;
- case EKU_OCSP_SIGN_OID:
- oid = extExtKeyUsageOcspSignOid;
- *oidSz = sizeof(extExtKeyUsageOcspSignOid);
- break;
- }
- break;
- case oidKdfType:
- switch (id) {
- case PBKDF2_OID:
- oid = pbkdf2Oid;
- *oidSz = sizeof(pbkdf2Oid);
- break;
- }
- break;
- case oidPBEType:
- switch (id) {
- case PBE_SHA1_RC4_128:
- oid = pbeSha1RC4128;
- *oidSz = sizeof(pbeSha1RC4128);
- break;
- case PBE_SHA1_DES:
- oid = pbeSha1Des;
- *oidSz = sizeof(pbeSha1Des);
- break;
- case PBE_SHA1_DES3:
- oid = pbeSha1Des3;
- *oidSz = sizeof(pbeSha1Des3);
- break;
- }
- break;
- case oidKeyWrapType:
- switch (id) {
- case AES128_WRAP:
- oid = wrapAes128Oid;
- *oidSz = sizeof(wrapAes128Oid);
- break;
- case AES192_WRAP:
- oid = wrapAes192Oid;
- *oidSz = sizeof(wrapAes192Oid);
- break;
- case AES256_WRAP:
- oid = wrapAes256Oid;
- *oidSz = sizeof(wrapAes256Oid);
- break;
- }
- break;
- case oidCmsKeyAgreeType:
- switch (id) {
- case dhSinglePass_stdDH_sha1kdf_scheme:
- oid = dhSinglePass_stdDH_sha1kdf_Oid;
- *oidSz = sizeof(dhSinglePass_stdDH_sha1kdf_Oid);
- break;
- case dhSinglePass_stdDH_sha224kdf_scheme:
- oid = dhSinglePass_stdDH_sha224kdf_Oid;
- *oidSz = sizeof(dhSinglePass_stdDH_sha224kdf_Oid);
- break;
- case dhSinglePass_stdDH_sha256kdf_scheme:
- oid = dhSinglePass_stdDH_sha256kdf_Oid;
- *oidSz = sizeof(dhSinglePass_stdDH_sha256kdf_Oid);
- break;
- case dhSinglePass_stdDH_sha384kdf_scheme:
- oid = dhSinglePass_stdDH_sha384kdf_Oid;
- *oidSz = sizeof(dhSinglePass_stdDH_sha384kdf_Oid);
- break;
- case dhSinglePass_stdDH_sha512kdf_scheme:
- oid = dhSinglePass_stdDH_sha512kdf_Oid;
- *oidSz = sizeof(dhSinglePass_stdDH_sha512kdf_Oid);
- break;
- }
- break;
- case oidHmacType:
- switch (id) {
- case HMAC_SHA224_OID:
- oid = hmacSha224Oid;
- *oidSz = sizeof(hmacSha224Oid);
- break;
- case HMAC_SHA256_OID:
- oid = hmacSha256Oid;
- *oidSz = sizeof(hmacSha256Oid);
- break;
- case HMAC_SHA384_OID:
- oid = hmacSha384Oid;
- *oidSz = sizeof(hmacSha384Oid);
- break;
- case HMAC_SHA512_OID:
- oid = hmacSha512Oid;
- *oidSz = sizeof(hmacSha512Oid);
- break;
- }
- break;
- case oidIgnoreType:
- default:
- break;
- }
- return oid;
- }
- #ifdef HAVE_OID_ENCODING
- int EncodeObjectId(const word16* in, word32 inSz, byte* out, word32* outSz)
- {
- int i, x, len;
- word32 d, t;
- /* check args */
- if (in == NULL || outSz == NULL) {
- return BAD_FUNC_ARG;
- }
- /* compute length of encoded OID */
- d = (in[0] * 40) + in[1];
- len = 0;
- for (i = 1; i < (int)inSz; i++) {
- x = 0;
- t = d;
- while (t) {
- x++;
- t >>= 1;
- }
- len += (x / 7) + ((x % 7) ? 1 : 0) + (d == 0 ? 1 : 0);
- if (i < (int)inSz - 1) {
- d = in[i + 1];
- }
- }
- if (out) {
- /* verify length */
- if ((int)*outSz < len) {
- return BUFFER_E; /* buffer provided is not large enough */
- }
- /* calc first byte */
- d = (in[0] * 40) + in[1];
- /* encode bytes */
- x = 0;
- for (i = 1; i < (int)inSz; i++) {
- if (d) {
- int y = x, z;
- byte mask = 0;
- while (d) {
- out[x++] = (byte)((d & 0x7F) | mask);
- d >>= 7;
- mask |= 0x80; /* upper bit is set on all but the last byte */
- }
- /* now swap bytes y...x-1 */
- z = x - 1;
- while (y < z) {
- mask = out[y];
- out[y] = out[z];
- out[z] = mask;
- ++y;
- --z;
- }
- }
- else {
- out[x++] = 0x00; /* zero value */
- }
- /* next word */
- if (i < (int)inSz - 1) {
- d = in[i + 1];
- }
- }
- }
- /* return length */
- *outSz = len;
- return 0;
- }
- #endif /* HAVE_OID_ENCODING */
- #ifdef HAVE_OID_DECODING
- int DecodeObjectId(const byte* in, word32 inSz, word16* out, word32* outSz)
- {
- int x = 0, y = 0;
- word32 t = 0;
- /* check args */
- if (in == NULL || outSz == NULL) {
- return BAD_FUNC_ARG;
- }
- /* decode bytes */
- while (inSz--) {
- t = (t << 7) | (in[x] & 0x7F);
- if (!(in[x] & 0x80)) {
- if (y >= (int)*outSz) {
- return BUFFER_E;
- }
- if (y == 0) {
- out[0] = (t / 40);
- out[1] = (t % 40);
- y = 2;
- }
- else {
- out[y++] = t;
- }
- t = 0; /* reset tmp */
- }
- x++;
- }
- /* return length */
- *outSz = y;
- return 0;
- }
- #endif /* HAVE_OID_DECODING */
- /* Get the DER/BER encoding of an ASN.1 OBJECT_ID header.
- *
- * input Buffer holding DER/BER encoded data.
- * inOutIdx Current index into buffer to parse.
- * len The number of bytes in the ASN.1 data.
- * maxIdx Length of data in buffer.
- * returns BUFFER_E when there is not enough data to parse.
- * ASN_OBJECt_ID_E when the OBJECT_ID tag is not found.
- * ASN_PARSE_E when length is invalid.
- * Otherwise, 0 to indicate success.
- */
- static int GetASNObjectId(const byte* input, word32* inOutIdx, int* len,
- word32 maxIdx)
- {
- word32 idx = *inOutIdx;
- byte b;
- int length;
- if ((idx + 1) > maxIdx)
- return BUFFER_E;
- b = input[idx++];
- if (b != ASN_OBJECT_ID)
- return ASN_OBJECT_ID_E;
- if (GetLength(input, &idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
- *len = length;
- *inOutIdx = idx;
- return 0;
- }
- /* Set the DER/BER encoding of the ASN.1 OBJECT_ID header.
- *
- * len Length of the OBJECT_ID data.
- * output Buffer to write into.
- * returns the number of bytes added to the buffer.
- */
- static int SetObjectId(int len, byte* output)
- {
- int idx = 0;
- output[idx++] = ASN_OBJECT_ID;
- idx += SetLength(len, output + idx);
- return idx;
- }
- int GetObjectId(const byte* input, word32* inOutIdx, word32* oid,
- word32 oidType, word32 maxIdx)
- {
- int ret = 0, length;
- word32 idx = *inOutIdx;
- #ifndef NO_VERIFY_OID
- word32 actualOidSz = 0;
- const byte* actualOid;
- #endif /* NO_VERIFY_OID */
- (void)oidType;
- WOLFSSL_ENTER("GetObjectId()");
- *oid = 0;
- ret = GetASNObjectId(input, &idx, &length, maxIdx);
- if (ret != 0)
- return ret;
- #ifndef NO_VERIFY_OID
- actualOid = &input[idx];
- if (length > 0)
- actualOidSz = (word32)length;
- #endif /* NO_VERIFY_OID */
- while (length--) {
- /* odd HC08 compiler behavior here when input[idx++] */
- *oid += (word32)input[idx];
- idx++;
- }
- /* just sum it up for now */
- *inOutIdx = idx;
- #ifndef NO_VERIFY_OID
- {
- const byte* checkOid = NULL;
- word32 checkOidSz;
- #ifdef ASN_DUMP_OID
- word32 i;
- #endif
- if (oidType != oidIgnoreType) {
- checkOid = OidFromId(*oid, oidType, &checkOidSz);
- #ifdef ASN_DUMP_OID
- /* support for dumping OID information */
- printf("OID (Type %d, Sz %d, Sum %d): ", oidType, actualOidSz, *oid);
- for (i=0; i<actualOidSz; i++) {
- printf("%d, ", actualOid[i]);
- }
- printf("\n");
- #ifdef HAVE_OID_DECODING
- {
- word16 decOid[16];
- word32 decOidSz = sizeof(decOid);
- ret = DecodeObjectId(actualOid, actualOidSz, decOid, &decOidSz);
- if (ret == 0) {
- printf(" Decoded (Sz %d): ", decOidSz);
- for (i=0; i<decOidSz; i++) {
- printf("%d.", decOid[i]);
- }
- printf("\n");
- }
- else {
- printf("DecodeObjectId failed: %d\n", ret);
- }
- }
- #endif /* HAVE_OID_DECODING */
- #endif /* ASN_DUMP_OID */
- if (checkOid != NULL &&
- (checkOidSz != actualOidSz ||
- XMEMCMP(actualOid, checkOid, checkOidSz) != 0)) {
- WOLFSSL_MSG("OID Check Failed");
- return ASN_UNKNOWN_OID_E;
- }
- }
- }
- #endif /* NO_VERIFY_OID */
- return ret;
- }
- static int SkipObjectId(const byte* input, word32* inOutIdx, word32 maxIdx)
- {
- word32 idx = *inOutIdx;
- int length;
- int ret;
- ret = GetASNObjectId(input, &idx, &length, maxIdx);
- if (ret != 0)
- return ret;
- idx += length;
- *inOutIdx = idx;
- return 0;
- }
- WOLFSSL_LOCAL int GetAlgoId(const byte* input, word32* inOutIdx, word32* oid,
- word32 oidType, word32 maxIdx)
- {
- int length;
- word32 idx = *inOutIdx;
- int ret;
- *oid = 0;
- WOLFSSL_ENTER("GetAlgoId");
- if (GetSequence(input, &idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
- if (GetObjectId(input, &idx, oid, oidType, maxIdx) < 0)
- return ASN_OBJECT_ID_E;
- /* could have NULL tag and 0 terminator, but may not */
- if (input[idx] == ASN_TAG_NULL) {
- ret = GetASNNull(input, &idx, maxIdx);
- if (ret != 0)
- return ret;
- }
- *inOutIdx = idx;
- return 0;
- }
- #ifndef NO_RSA
- #ifndef HAVE_USER_RSA
- int wc_RsaPrivateKeyDecode(const byte* input, word32* inOutIdx, RsaKey* key,
- word32 inSz)
- {
- int version, length;
- if (inOutIdx == NULL) {
- return BAD_FUNC_ARG;
- }
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- if (GetMyVersion(input, inOutIdx, &version, inSz) < 0)
- return ASN_PARSE_E;
- key->type = RSA_PRIVATE;
- if (GetInt(&key->n, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->e, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->d, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->p, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->q, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->dP, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->dQ, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->u, input, inOutIdx, inSz) < 0 ) return ASN_RSA_KEY_E;
- #ifdef WOLFSSL_XILINX_CRYPT
- if (wc_InitRsaHw(key) != 0) {
- return BAD_STATE_E;
- }
- #endif
- return 0;
- }
- #endif /* HAVE_USER_RSA */
- #endif /* NO_RSA */
- /* Remove PKCS8 header, place inOutIdx at beginning of traditional,
- * return traditional length on success, negative on error */
- int ToTraditionalInline(const byte* input, word32* inOutIdx, word32 sz)
- {
- word32 idx, oid;
- int version, length;
- int ret;
- if (input == NULL || inOutIdx == NULL)
- return BAD_FUNC_ARG;
- idx = *inOutIdx;
- if (GetSequence(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- if (GetMyVersion(input, &idx, &version, sz) < 0)
- return ASN_PARSE_E;
- if (GetAlgoId(input, &idx, &oid, oidKeyType, sz) < 0)
- return ASN_PARSE_E;
- if (input[idx] == ASN_OBJECT_ID) {
- if (SkipObjectId(input, &idx, sz) < 0)
- return ASN_PARSE_E;
- }
- ret = GetOctetString(input, &idx, &length, sz);
- if (ret < 0)
- return ret;
- *inOutIdx = idx;
- return length;
- }
- /* Remove PKCS8 header, move beginning of traditional to beginning of input */
- int ToTraditional(byte* input, word32 sz)
- {
- word32 inOutIdx = 0;
- int length;
- if (input == NULL)
- return BAD_FUNC_ARG;
- length = ToTraditionalInline(input, &inOutIdx, sz);
- if (length < 0)
- return length;
- XMEMMOVE(input, input + inOutIdx, length);
- return length;
- }
- /* find beginning of traditional key inside PKCS#8 unencrypted buffer
- * return traditional length on success, with inOutIdx at beginning of
- * traditional
- * return negative on failure/error */
- int wc_GetPkcs8TraditionalOffset(byte* input, word32* inOutIdx, word32 sz)
- {
- int length;
- if (input == NULL || inOutIdx == NULL || (*inOutIdx > sz))
- return BAD_FUNC_ARG;
- length = ToTraditionalInline(input, inOutIdx, sz);
- return length;
- }
- /* PKCS#8 from RFC 5208
- * This function takes in a DER key and converts it to PKCS#8 format. Used
- * in creating PKCS#12 shrouded key bags.
- * Reverse of ToTraditional
- *
- * PrivateKeyInfo ::= SEQUENCE {
- * version Version,
- * privateKeyAlgorithm PrivateKeyAlgorithmIdentifier,
- * privateKey PrivateKey,
- * attributes optional
- * }
- * Version ::= INTEGER
- * PrivateKeyAlgorithmIdentifier ::= AlgorithmIdentifier
- * PrivateKey ::= OCTET STRING
- *
- * out buffer to place result in
- * outSz size of out buffer
- * key buffer with DER key
- * keySz size of key buffer
- * algoID algorithm ID i.e. RSAk
- * curveOID ECC curve oid if used. Should be NULL for RSA keys.
- * oidSz size of curve oid. Is set to 0 if curveOID is NULL.
- *
- * Returns the size of PKCS#8 placed into out. In error cases returns negative
- * values.
- */
- int wc_CreatePKCS8Key(byte* out, word32* outSz, byte* key, word32 keySz,
- int algoID, const byte* curveOID, word32 oidSz)
- {
- word32 keyIdx = 0;
- word32 tmpSz = 0;
- word32 sz;
- /* If out is NULL then return the max size needed
- * + 2 for ASN_OBJECT_ID and ASN_OCTET_STRING tags */
- if (out == NULL && outSz != NULL) {
- *outSz = keySz + MAX_SEQ_SZ + MAX_VERSION_SZ + MAX_ALGO_SZ
- + MAX_LENGTH_SZ + MAX_LENGTH_SZ + 2;
- if (curveOID != NULL)
- *outSz += oidSz + MAX_LENGTH_SZ + 1;
- WOLFSSL_MSG("Checking size of PKCS8");
- return LENGTH_ONLY_E;
- }
- WOLFSSL_ENTER("wc_CreatePKCS8Key()");
- if (key == NULL || out == NULL || outSz == NULL) {
- return BAD_FUNC_ARG;
- }
- /* check the buffer has enough room for largest possible size */
- if (curveOID != NULL) {
- if (*outSz < (keySz + MAX_SEQ_SZ + MAX_VERSION_SZ + MAX_ALGO_SZ
- + MAX_LENGTH_SZ + MAX_LENGTH_SZ + 3 + oidSz + MAX_LENGTH_SZ))
- return BUFFER_E;
- }
- else {
- oidSz = 0; /* with no curveOID oid size must be 0 */
- if (*outSz < (keySz + MAX_SEQ_SZ + MAX_VERSION_SZ + MAX_ALGO_SZ
- + MAX_LENGTH_SZ + MAX_LENGTH_SZ + 2))
- return BUFFER_E;
- }
- /* PrivateKeyInfo ::= SEQUENCE */
- keyIdx += MAX_SEQ_SZ; /* save room for sequence */
- /* version Version
- * no header information just INTEGER */
- sz = SetMyVersion(PKCS8v0, out + keyIdx, 0);
- tmpSz += sz; keyIdx += sz;
- /* privateKeyAlgorithm PrivateKeyAlgorithmIdentifier */
- sz = 0; /* set sz to 0 and get privateKey oid buffer size needed */
- if (curveOID != NULL && oidSz > 0) {
- byte buf[MAX_LENGTH_SZ];
- sz = SetLength(oidSz, buf);
- sz += 1; /* plus one for ASN object id */
- }
- sz = SetAlgoID(algoID, out + keyIdx, oidKeyType, oidSz + sz);
- tmpSz += sz; keyIdx += sz;
- /* privateKey PrivateKey *
- * pkcs8 ecc uses slightly different format. Places curve oid in
- * buffer */
- if (curveOID != NULL && oidSz > 0) {
- sz = SetObjectId(oidSz, out + keyIdx);
- keyIdx += sz; tmpSz += sz;
- XMEMCPY(out + keyIdx, curveOID, oidSz);
- keyIdx += oidSz; tmpSz += oidSz;
- }
- sz = SetOctetString(keySz, out + keyIdx);
- keyIdx += sz; tmpSz += sz;
- XMEMCPY(out + keyIdx, key, keySz);
- tmpSz += keySz;
- /* attributes optional
- * No attributes currently added */
- /* rewind and add sequence */
- sz = SetSequence(tmpSz, out);
- XMEMMOVE(out + sz, out + MAX_SEQ_SZ, tmpSz);
- return tmpSz + sz;
- }
- /* check that the private key is a pair for the public key in certificate
- * return 1 (true) on match
- * return 0 or negative value on failure/error
- *
- * key : buffer holding DER fromat key
- * keySz : size of key buffer
- * der : a initialized and parsed DecodedCert holding a certificate */
- int wc_CheckPrivateKey(byte* key, word32 keySz, DecodedCert* der)
- {
- int ret;
- (void)keySz;
- if (key == NULL || der == NULL) {
- return BAD_FUNC_ARG;
- }
- #if !defined(NO_RSA)
- /* test if RSA key */
- if (der->keyOID == RSAk) {
- RsaKey a, b;
- word32 keyIdx = 0;
- if ((ret = wc_InitRsaKey(&a, NULL)) < 0)
- return ret;
- if ((ret = wc_InitRsaKey(&b, NULL)) < 0) {
- wc_FreeRsaKey(&a);
- return ret;
- }
- if ((ret = wc_RsaPrivateKeyDecode(key, &keyIdx, &a, keySz)) == 0) {
- WOLFSSL_MSG("Checking RSA key pair");
- keyIdx = 0; /* reset to 0 for parsing public key */
- if ((ret = wc_RsaPublicKeyDecode(der->publicKey, &keyIdx, &b,
- der->pubKeySize)) == 0) {
- /* limit for user RSA crypto because of RsaKey
- * dereference. */
- #if defined(HAVE_USER_RSA)
- WOLFSSL_MSG("Cannot verify RSA pair with user RSA");
- ret = 1; /* return first RSA cert as match */
- #else
- /* both keys extracted successfully now check n and e
- * values are the same. This is dereferencing RsaKey */
- if (mp_cmp(&(a.n), &(b.n)) != MP_EQ ||
- mp_cmp(&(a.e), &(b.e)) != MP_EQ) {
- ret = MP_CMP_E;
- }
- else
- ret = 1;
- #endif
- }
- }
- wc_FreeRsaKey(&b);
- wc_FreeRsaKey(&a);
- }
- else
- #endif /* NO_RSA */
- #ifdef HAVE_ECC
- if (der->keyOID == ECDSAk) {
- ecc_key key_pair;
- byte privDer[MAX_ECC_BYTES];
- word32 privSz = MAX_ECC_BYTES;
- word32 keyIdx = 0;
- if ((ret = wc_ecc_init(&key_pair)) < 0)
- return ret;
- if ((ret = wc_EccPrivateKeyDecode(key, &keyIdx, &key_pair,
- keySz)) == 0) {
- WOLFSSL_MSG("Checking ECC key pair");
- if ((ret = wc_ecc_export_private_only(&key_pair, privDer, &privSz))
- == 0) {
- wc_ecc_free(&key_pair);
- ret = wc_ecc_init(&key_pair);
- if (ret == 0) {
- ret = wc_ecc_import_private_key((const byte*)privDer,
- privSz, (const byte*)der->publicKey,
- der->pubKeySize, &key_pair);
- }
- /* public and private extracted successfuly now check if is
- * a pair and also do sanity checks on key. wc_ecc_check_key
- * checks that private * base generator equals pubkey */
- if (ret == 0) {
- if ((ret = wc_ecc_check_key(&key_pair)) == 0) {
- ret = 1;
- }
- }
- ForceZero(privDer, privSz);
- }
- }
- wc_ecc_free(&key_pair);
- }
- else
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- if (der->keyOID == ED25519k) {
- word32 keyIdx = 0;
- ed25519_key key_pair;
- if ((ret = wc_ed25519_init(&key_pair)) < 0)
- return ret;
- if ((ret = wc_Ed25519PrivateKeyDecode(key, &keyIdx, &key_pair,
- keySz)) == 0) {
- WOLFSSL_MSG("Checking ED25519 key pair");
- keyIdx = 0;
- if ((ret = wc_ed25519_import_public(der->publicKey, der->pubKeySize,
- &key_pair)) == 0) {
- /* public and private extracted successfuly no check if is
- * a pair and also do sanity checks on key. wc_ecc_check_key
- * checks that private * base generator equals pubkey */
- if ((ret = wc_ed25519_check_key(&key_pair)) == 0)
- ret = 1;
- }
- }
- wc_ed25519_free(&key_pair);
- }
- else
- #endif
- {
- ret = 0;
- }
- (void)keySz;
- return ret;
- }
- #ifndef NO_PWDBASED
- /* Check To see if PKCS version algo is supported, set id if it is return 0
- < 0 on error */
- static int CheckAlgo(int first, int second, int* id, int* version)
- {
- *id = ALGO_ID_E;
- *version = PKCS5; /* default */
- if (first == 1) {
- switch (second) {
- case PBE_SHA1_RC4_128:
- *id = PBE_SHA1_RC4_128;
- *version = PKCS12v1;
- return 0;
- case PBE_SHA1_DES:
- *id = PBE_SHA1_DES;
- *version = PKCS12v1;
- return 0;
- case PBE_SHA1_DES3:
- *id = PBE_SHA1_DES3;
- *version = PKCS12v1;
- return 0;
- default:
- return ALGO_ID_E;
- }
- }
- if (first != PKCS5)
- return ASN_INPUT_E; /* VERSION ERROR */
- if (second == PBES2) {
- *version = PKCS5v2;
- return 0;
- }
- switch (second) {
- case 3: /* see RFC 2898 for ids */
- *id = PBE_MD5_DES;
- return 0;
- case 10:
- *id = PBE_SHA1_DES;
- return 0;
- default:
- return ALGO_ID_E;
- }
- }
- /* Check To see if PKCS v2 algo is supported, set id if it is return 0
- < 0 on error */
- static int CheckAlgoV2(int oid, int* id)
- {
- switch (oid) {
- case DESb:
- *id = PBE_SHA1_DES;
- return 0;
- case DES3b:
- *id = PBE_SHA1_DES3;
- return 0;
- case AES256CBCb:
- *id = PBE_AES256_CBC;
- return 0;
- default:
- return ALGO_ID_E;
- }
- }
- /* Decrypt/Encrypt input in place from parameters based on id
- *
- * returns a negative value on fail case
- */
- static int CryptKey(const char* password, int passwordSz, byte* salt,
- int saltSz, int iterations, int id, byte* input,
- int length, int version, byte* cbcIv, int enc)
- {
- int typeH;
- int derivedLen;
- int ret = 0;
- #ifdef WOLFSSL_SMALL_STACK
- byte* key;
- #else
- byte key[MAX_KEY_SIZE];
- #endif
- (void)input;
- (void)length;
- (void)enc;
- WOLFSSL_ENTER("CryptKey()");
- switch (id) {
- case PBE_MD5_DES:
- typeH = WC_MD5;
- derivedLen = 16; /* may need iv for v1.5 */
- break;
- case PBE_SHA1_DES:
- typeH = WC_SHA;
- derivedLen = 16; /* may need iv for v1.5 */
- break;
- case PBE_SHA1_DES3:
- typeH = WC_SHA;
- derivedLen = 32; /* may need iv for v1.5 */
- break;
- case PBE_SHA1_RC4_128:
- typeH = WC_SHA;
- derivedLen = 16;
- break;
- case PBE_AES256_CBC:
- typeH = WC_SHA256;
- derivedLen = 32;
- break;
- default:
- WOLFSSL_MSG("Unknown/Unsupported encrypt/decrypt id");
- return ALGO_ID_E;
- }
- #ifdef WOLFSSL_SMALL_STACK
- key = (byte*)XMALLOC(MAX_KEY_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (key == NULL)
- return MEMORY_E;
- #endif
- if (version == PKCS5v2)
- ret = wc_PBKDF2(key, (byte*)password, passwordSz,
- salt, saltSz, iterations, derivedLen, typeH);
- #ifndef NO_SHA
- else if (version == PKCS5)
- ret = wc_PBKDF1(key, (byte*)password, passwordSz,
- salt, saltSz, iterations, derivedLen, typeH);
- #endif
- else if (version == PKCS12v1) {
- int i, idx = 0;
- byte unicodePasswd[MAX_UNICODE_SZ];
- if ( (passwordSz * 2 + 2) > (int)sizeof(unicodePasswd)) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return UNICODE_SIZE_E;
- }
- for (i = 0; i < passwordSz; i++) {
- unicodePasswd[idx++] = 0x00;
- unicodePasswd[idx++] = (byte)password[i];
- }
- /* add trailing NULL */
- unicodePasswd[idx++] = 0x00;
- unicodePasswd[idx++] = 0x00;
- ret = wc_PKCS12_PBKDF(key, unicodePasswd, idx, salt, saltSz,
- iterations, derivedLen, typeH, 1);
- if (id != PBE_SHA1_RC4_128)
- ret += wc_PKCS12_PBKDF(cbcIv, unicodePasswd, idx, salt, saltSz,
- iterations, 8, typeH, 2);
- }
- else {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- WOLFSSL_MSG("Unknown/Unsupported PKCS version");
- return ALGO_ID_E;
- }
- if (ret != 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- switch (id) {
- #ifndef NO_DES3
- case PBE_MD5_DES:
- case PBE_SHA1_DES:
- {
- Des des;
- byte* desIv = key + 8;
- if (version == PKCS5v2 || version == PKCS12v1)
- desIv = cbcIv;
- if (enc) {
- ret = wc_Des_SetKey(&des, key, desIv, DES_ENCRYPTION);
- }
- else {
- ret = wc_Des_SetKey(&des, key, desIv, DES_DECRYPTION);
- }
- if (ret != 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- if (enc) {
- wc_Des_CbcEncrypt(&des, input, input, length);
- }
- else {
- wc_Des_CbcDecrypt(&des, input, input, length);
- }
- break;
- }
- case PBE_SHA1_DES3:
- {
- Des3 des;
- byte* desIv = key + 24;
- if (version == PKCS5v2 || version == PKCS12v1)
- desIv = cbcIv;
- ret = wc_Des3Init(&des, NULL, INVALID_DEVID);
- if (ret != 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- if (enc) {
- ret = wc_Des3_SetKey(&des, key, desIv, DES_ENCRYPTION);
- }
- else {
- ret = wc_Des3_SetKey(&des, key, desIv, DES_DECRYPTION);
- }
- if (ret != 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- if (enc) {
- ret = wc_Des3_CbcEncrypt(&des, input, input, length);
- }
- else {
- ret = wc_Des3_CbcDecrypt(&des, input, input, length);
- }
- if (ret != 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- break;
- }
- #endif
- #ifndef NO_RC4
- case PBE_SHA1_RC4_128:
- {
- Arc4 dec;
- wc_Arc4SetKey(&dec, key, derivedLen);
- wc_Arc4Process(&dec, input, input, length);
- break;
- }
- #endif
- #ifndef NO_AES
- case PBE_AES256_CBC:
- {
- Aes dec;
- ret = wc_AesInit(&dec, NULL, INVALID_DEVID);
- if (ret == 0)
- ret = wc_AesSetKey(&dec, key, derivedLen,
- cbcIv, AES_DECRYPTION);
- if (ret == 0)
- ret = wc_AesCbcDecrypt(&dec, input, input, length);
- if (ret != 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- ForceZero(&dec, sizeof(Aes));
- break;
- }
- #endif
- default:
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- WOLFSSL_MSG("Unknown/Unsupported encrypt/decryption algorithm");
- return ALGO_ID_E;
- }
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- int wc_GetKeyOID(byte* key, word32 keySz, const byte** curveOID, word32* oidSz,
- int* algoID, void* heap)
- {
- word32 tmpIdx = 0;
- #ifdef HAVE_ECC
- ecc_key ecc;
- #endif
- #ifdef HAVE_ED25519
- ed25519_key ed25519;
- #endif
- #ifndef NO_RSA
- RsaKey rsa;
- wc_InitRsaKey(&rsa, heap);
- if (wc_RsaPrivateKeyDecode(key, &tmpIdx, &rsa, keySz) == 0) {
- *algoID = RSAk;
- }
- else {
- WOLFSSL_MSG("Not RSA DER key");
- }
- wc_FreeRsaKey(&rsa);
- #endif /* NO_RSA */
- #ifdef HAVE_ECC
- if (algoID == 0) {
- tmpIdx = 0;
- wc_ecc_init_ex(&ecc, heap, INVALID_DEVID);
- if (wc_EccPrivateKeyDecode(key, &tmpIdx, &ecc, keySz) == 0) {
- *algoID = ECDSAk;
- /* now find oid */
- if (wc_ecc_get_oid(ecc.dp->oidSum, curveOID, oidSz) < 0) {
- WOLFSSL_MSG("Error getting ECC curve OID");
- wc_ecc_free(&ecc);
- return BAD_FUNC_ARG;
- }
- }
- else {
- WOLFSSL_MSG("Not ECC DER key either");
- }
- wc_ecc_free(&ecc);
- }
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- if (*algoID != RSAk && *algoID != ECDSAk) {
- if (wc_ed25519_init(&ed25519) == 0) {
- if (wc_Ed25519PrivateKeyDecode(key, &tmpIdx, &ed25519, keySz)
- == 0) {
- *algoID = ED25519k;
- }
- else {
- WOLFSSL_MSG("Not ED25519 DER key");
- }
- wc_ed25519_free(&ed25519);
- }
- else {
- WOLFSSL_MSG("GetKeyOID wc_ed25519_init failed");
- }
- }
- #endif
- /* if flag is not set then is neither RSA or ECC key that could be
- * found */
- if (*algoID == 0) {
- WOLFSSL_MSG("Bad key DER or compile options");
- return BAD_FUNC_ARG;
- }
- (void)curveOID;
- (void)oidSz;
- return 1;
- }
- /*
- * Used when creating PKCS12 shrouded key bags
- * vPKCS is the version of PKCS to use
- * vAlgo is the algorithm version to use
- *
- * if salt is NULL a random number is generated
- *
- * returns the size of encrypted data on success
- */
- int UnTraditionalEnc(byte* key, word32 keySz, byte* out, word32* outSz,
- const char* password,int passwordSz, int vPKCS, int vAlgo,
- byte* salt, word32 saltSz, int itt, WC_RNG* rng, void* heap)
- {
- int algoID = 0;
- byte* tmp;
- word32 tmpSz = 0;
- word32 sz;
- word32 seqSz;
- word32 inOutIdx = 0;
- word32 totalSz = 0;
- int version, id;
- int ret;
- const byte* curveOID = NULL;
- word32 oidSz = 0;
- #ifdef WOLFSSL_SMALL_STACK
- byte* saltTmp = NULL;
- byte* cbcIv = NULL;
- #else
- byte saltTmp[MAX_IV_SIZE];
- byte cbcIv[MAX_IV_SIZE];
- #endif
- WOLFSSL_ENTER("UnTraditionalEnc()");
- if (saltSz > MAX_SALT_SIZE)
- return ASN_PARSE_E;
- inOutIdx += MAX_SEQ_SZ; /* leave room for size of finished shroud */
- if (CheckAlgo(vPKCS, vAlgo, &id, &version) < 0) {
- WOLFSSL_MSG("Bad/Unsupported algorithm ID");
- return ASN_INPUT_E; /* Algo ID error */
- }
- if (out != NULL) {
- if (*outSz < inOutIdx + MAX_ALGO_SZ + MAX_SALT_SIZE + MAX_SEQ_SZ + 1 +
- MAX_LENGTH_SZ + MAX_SHORT_SZ + 1)
- return BUFFER_E;
- sz = SetAlgoID(id, out + inOutIdx, oidPBEType, 0);
- totalSz += sz; inOutIdx += sz;
- if (version == PKCS5v2) {
- WOLFSSL_MSG("PKCS5v2 Not supported yet\n");
- }
- if (salt == NULL || saltSz <= 0) {
- saltSz = 8;
- #ifdef WOLFSSL_SMALL_STACK
- saltTmp = (byte*)XMALLOC(saltSz, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (saltTmp == NULL)
- return MEMORY_E;
- #endif
- salt = saltTmp;
- if ((ret = wc_RNG_GenerateBlock(rng, saltTmp, saltSz)) != 0) {
- WOLFSSL_MSG("Error generating random salt");
- #ifdef WOLFSSL_SMALL_STACK
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- }
- /* leave room for a sequence (contains salt and iterations int) */
- inOutIdx += MAX_SEQ_SZ; sz = 0;
- /* place salt in buffer */
- out[inOutIdx++] = ASN_OCTET_STRING; sz++;
- tmpSz = SetLength(saltSz, out + inOutIdx);
- inOutIdx += tmpSz; sz += tmpSz;
- XMEMCPY(out + inOutIdx, salt, saltSz);
- inOutIdx += saltSz; sz += saltSz;
- /* place iteration count in buffer */
- out[inOutIdx++] = ASN_INTEGER; sz++;
- out[inOutIdx++] = sizeof(word32); sz++;
- out[inOutIdx++] = (itt >> 24) & 0xFF;
- out[inOutIdx++] = (itt >> 16) & 0xFF;
- out[inOutIdx++] = (itt >> 8 ) & 0xFF;
- out[inOutIdx++] = itt & 0xFF;
- sz += 4;
- /* wind back index and set sequence then clean up buffer */
- inOutIdx -= (sz + MAX_SEQ_SZ);
- tmpSz = SetSequence(sz, out + inOutIdx);
- XMEMMOVE(out + inOutIdx + tmpSz, out + inOutIdx + MAX_SEQ_SZ, sz);
- inOutIdx += tmpSz + sz; totalSz += tmpSz + sz;
- /* octet string containing encrypted key */
- out[inOutIdx++] = ASN_OCTET_STRING; totalSz++;
- }
- /* check key type and get OID if ECC */
- if ((ret = wc_GetKeyOID(key, keySz, &curveOID, &oidSz, &algoID, heap))< 0) {
- return ret;
- }
- /* PKCS#8 wrapping around key */
- if (wc_CreatePKCS8Key(NULL, &tmpSz, key, keySz, algoID, curveOID, oidSz)
- != LENGTH_ONLY_E) {
- #ifdef WOLFSSL_SMALL_STACK
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return MEMORY_E;
- }
- /* check if should return max size */
- if (out == NULL) {
- /* account for salt size */
- if (salt == NULL || saltSz <= 0) {
- tmpSz += MAX_SALT_SIZE;
- }
- else {
- tmpSz += saltSz;
- }
- /* plus 3 for tags */
- *outSz = tmpSz + MAX_ALGO_SZ + MAX_LENGTH_SZ +MAX_LENGTH_SZ + MAX_SEQ_SZ
- + MAX_LENGTH_SZ + MAX_SEQ_SZ + 3;
- return LENGTH_ONLY_E;
- }
- tmp = (byte*)XMALLOC(tmpSz, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (tmp == NULL) {
- #ifdef WOLFSSL_SMALL_STACK
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return MEMORY_E;
- }
- if ((ret = wc_CreatePKCS8Key(tmp, &tmpSz, key, keySz, algoID, curveOID,
- oidSz)) < 0) {
- XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- WOLFSSL_MSG("Error wrapping key with PKCS#8");
- #ifdef WOLFSSL_SMALL_STACK
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- tmpSz = ret;
- #ifdef WOLFSSL_SMALL_STACK
- cbcIv = (byte*)XMALLOC(MAX_IV_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (cbcIv == NULL) {
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(salt, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
- #endif
- /* encrypt PKCS#8 wrapped key */
- if ((ret = CryptKey(password, passwordSz, salt, saltSz, itt, id,
- tmp, tmpSz, version, cbcIv, 1)) < 0) {
- XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- WOLFSSL_MSG("Error encrypting key");
- #ifdef WOLFSSL_SMALL_STACK
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (cbcIv != NULL)
- XFREE(cbcIv, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret; /* encryption failure */
- }
- totalSz += tmpSz;
- #ifdef WOLFSSL_SMALL_STACK
- if (saltTmp != NULL)
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (cbcIv != NULL)
- XFREE(cbcIv, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- if (*outSz < inOutIdx + tmpSz + MAX_LENGTH_SZ) {
- XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return BUFFER_E;
- }
- /* set length of key and copy over encrypted key */
- seqSz = SetLength(tmpSz, out + inOutIdx);
- inOutIdx += seqSz; totalSz += seqSz;
- XMEMCPY(out + inOutIdx, tmp, tmpSz);
- XFREE(tmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- /* set total size at begining */
- sz = SetSequence(totalSz, out);
- XMEMMOVE(out + sz, out + MAX_SEQ_SZ, totalSz);
- return totalSz + sz;
- }
- /* Remove Encrypted PKCS8 header, move beginning of traditional to beginning
- of input */
- int ToTraditionalEnc(byte* input, word32 sz,const char* password,int passwordSz)
- {
- word32 inOutIdx = 0, seqEnd, oid;
- int ret = 0, first, second, length = 0, version, saltSz, id;
- int iterations = 0, keySz = 0;
- #ifdef WOLFSSL_SMALL_STACK
- byte* salt = NULL;
- byte* cbcIv = NULL;
- #else
- byte salt[MAX_SALT_SIZE];
- byte cbcIv[MAX_IV_SIZE];
- #endif
- if (passwordSz < 0) {
- WOLFSSL_MSG("Bad password size");
- return BAD_FUNC_ARG;
- }
- if (GetSequence(input, &inOutIdx, &length, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- if (GetAlgoId(input, &inOutIdx, &oid, oidIgnoreType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- first = input[inOutIdx - 2]; /* PKCS version always 2nd to last byte */
- second = input[inOutIdx - 1]; /* version.algo, algo id last byte */
- if (CheckAlgo(first, second, &id, &version) < 0) {
- ERROR_OUT(ASN_INPUT_E, exit_tte); /* Algo ID error */
- }
- if (version == PKCS5v2) {
- if (GetSequence(input, &inOutIdx, &length, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- if (GetAlgoId(input, &inOutIdx, &oid, oidKdfType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- if (oid != PBKDF2_OID) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- }
- if (GetSequence(input, &inOutIdx, &length, sz) <= 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- /* Find the end of this SEQUENCE so we can check for the OPTIONAL and
- * DEFAULT items. */
- seqEnd = inOutIdx + length;
- ret = GetOctetString(input, &inOutIdx, &saltSz, sz);
- if (ret < 0)
- goto exit_tte;
- if (saltSz > MAX_SALT_SIZE) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- #ifdef WOLFSSL_SMALL_STACK
- salt = (byte*)XMALLOC(MAX_SALT_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (salt == NULL) {
- ERROR_OUT(MEMORY_E, exit_tte);
- }
- #endif
- XMEMCPY(salt, &input[inOutIdx], saltSz);
- inOutIdx += saltSz;
- if (GetShortInt(input, &inOutIdx, &iterations, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- /* OPTIONAL key length */
- if (seqEnd > inOutIdx && input[inOutIdx] == ASN_INTEGER) {
- if (GetShortInt(input, &inOutIdx, &keySz, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- }
- /* DEFAULT HMAC is SHA-1 */
- if (seqEnd > inOutIdx) {
- if (GetAlgoId(input, &inOutIdx, &oid, oidHmacType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- }
- #ifdef WOLFSSL_SMALL_STACK
- cbcIv = (byte*)XMALLOC(MAX_IV_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (cbcIv == NULL) {
- ERROR_OUT(MEMORY_E, exit_tte);
- }
- #endif
- if (version == PKCS5v2) {
- /* get encryption algo */
- if (GetAlgoId(input, &inOutIdx, &oid, oidBlkType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- if (CheckAlgoV2(oid, &id) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_tte); /* PKCS v2 algo id error */
- }
- ret = GetOctetString(input, &inOutIdx, &length, sz);
- if (ret < 0)
- goto exit_tte;
- if (length > MAX_IV_SIZE) {
- ERROR_OUT(ASN_PARSE_E, exit_tte);
- }
- XMEMCPY(cbcIv, &input[inOutIdx], length);
- inOutIdx += length;
- }
- ret = GetOctetString(input, &inOutIdx, &length, sz);
- if (ret < 0)
- goto exit_tte;
- ret = CryptKey(password, passwordSz, salt, saltSz, iterations, id,
- input + inOutIdx, length, version, cbcIv, 0);
- exit_tte:
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(salt, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(cbcIv, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- if (ret == 0) {
- XMEMMOVE(input, input + inOutIdx, length);
- ret = ToTraditional(input, length);
- }
- return ret;
- }
- /* encrypt PKCS 12 content
- *
- * NOTE: if out is NULL then outSz is set with the total buffer size needed and
- * the error value LENGTH_ONLY_E is returned.
- *
- * input data to encrypt
- * inputSz size of input buffer
- * out buffer to hold the result
- * outSz size of out buffer
- * password password if used. Can be NULL for no password
- * passwordSz size of password buffer
- * vPKCS version of PKCS i.e. PKCS5v2
- * vAlgo algorithm version
- * salt buffer holding salt if used. If NULL then a random salt is created
- * saltSz size of salt buffer if it is not NULL
- * itt number of iterations used
- * rng random number generator to use
- * heap possible heap hint for mallocs/frees
- *
- * returns the total size of encrypted content on success.
- */
- int EncryptContent(byte* input, word32 inputSz, byte* out, word32* outSz,
- const char* password, int passwordSz, int vPKCS, int vAlgo,
- byte* salt, word32 saltSz, int itt, WC_RNG* rng, void* heap)
- {
- word32 sz;
- word32 inOutIdx = 0;
- word32 tmpIdx = 0;
- word32 totalSz = 0;
- word32 seqSz;
- int ret;
- int version, id;
- #ifdef WOLFSSL_SMALL_STACK
- byte* saltTmp = NULL;
- byte* cbcIv = NULL;
- #else
- byte saltTmp[MAX_SALT_SIZE];
- byte cbcIv[MAX_IV_SIZE];
- #endif
- (void)heap;
- WOLFSSL_ENTER("EncryptContent()");
- if (CheckAlgo(vPKCS, vAlgo, &id, &version) < 0)
- return ASN_INPUT_E; /* Algo ID error */
- if (version == PKCS5v2) {
- WOLFSSL_MSG("PKCS#5 version 2 not supported yet");
- return BAD_FUNC_ARG;
- }
- if (saltSz > MAX_SALT_SIZE)
- return ASN_PARSE_E;
- if (outSz == NULL) {
- return BAD_FUNC_ARG;
- }
- if (out == NULL) {
- sz = inputSz;
- switch (id) {
- case PBE_MD5_DES:
- case PBE_SHA1_DES:
- case PBE_SHA1_DES3:
- /* set to block size of 8 for DES operations. This rounds up
- * to the nearset multiple of 8 */
- sz &= 0xfffffff8;
- sz += 8;
- break;
- case PBE_SHA1_RC4_128:
- break;
- case -1:
- break;
- default:
- return ALGO_ID_E;
- }
- if (saltSz <= 0) {
- sz += MAX_SALT_SIZE;
- }
- else {
- sz += saltSz;
- }
- /* add 2 for tags */
- *outSz = sz + MAX_ALGO_SZ + MAX_SEQ_SZ + MAX_LENGTH_SZ +
- MAX_LENGTH_SZ + MAX_LENGTH_SZ + MAX_SHORT_SZ + 2;
- return LENGTH_ONLY_E;
- }
- if (inOutIdx + MAX_ALGO_SZ + MAX_SEQ_SZ + 1 > *outSz)
- return BUFFER_E;
- sz = SetAlgoID(id, out + inOutIdx, oidPBEType, 0);
- inOutIdx += sz; totalSz += sz;
- tmpIdx = inOutIdx;
- tmpIdx += MAX_SEQ_SZ; /* save room for salt and itter sequence */
- out[tmpIdx++] = ASN_OCTET_STRING;
- /* create random salt if one not provided */
- if (salt == NULL || saltSz <= 0) {
- saltSz = 8;
- #ifdef WOLFSSL_SMALL_STACK
- saltTmp = (byte*)XMALLOC(saltSz, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (saltTmp == NULL)
- return MEMORY_E;
- #endif
- salt = saltTmp;
- if ((ret = wc_RNG_GenerateBlock(rng, saltTmp, saltSz)) != 0) {
- WOLFSSL_MSG("Error generating random salt");
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- }
- if (tmpIdx + MAX_LENGTH_SZ + saltSz + MAX_SHORT_SZ > *outSz) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BUFFER_E;
- }
- sz = SetLength(saltSz, out + tmpIdx);
- tmpIdx += sz;
- XMEMCPY(out + tmpIdx, salt, saltSz);
- tmpIdx += saltSz;
- /* place itteration setting in buffer */
- out[tmpIdx++] = ASN_INTEGER;
- out[tmpIdx++] = sizeof(word32);
- out[tmpIdx++] = (itt >> 24) & 0xFF;
- out[tmpIdx++] = (itt >> 16) & 0xFF;
- out[tmpIdx++] = (itt >> 8) & 0xFF;
- out[tmpIdx++] = itt & 0xFF;
- /* rewind and place sequence */
- sz = tmpIdx - inOutIdx - MAX_SEQ_SZ;
- seqSz = SetSequence(sz, out + inOutIdx);
- XMEMMOVE(out + inOutIdx + seqSz, out + inOutIdx + MAX_SEQ_SZ, sz);
- inOutIdx += seqSz; totalSz += seqSz;
- inOutIdx += sz; totalSz += sz;
- #ifdef WOLFSSL_SMALL_STACK
- cbcIv = (byte*)XMALLOC(MAX_IV_SIZE, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (cbcIv == NULL) {
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
- #endif
- if ((ret = CryptKey(password, passwordSz, salt, saltSz, itt, id,
- input, inputSz, version, cbcIv, 1)) < 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(cbcIv, heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret; /* encrypt failure */
- }
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(cbcIv, heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(saltTmp, heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- if (inOutIdx + 1 + MAX_LENGTH_SZ + inputSz > *outSz)
- return BUFFER_E;
- out[inOutIdx++] = ASN_LONG_LENGTH; totalSz++;
- sz = SetLength(inputSz, out + inOutIdx);
- inOutIdx += sz; totalSz += sz;
- XMEMCPY(out + inOutIdx, input, inputSz);
- totalSz += inputSz;
- return totalSz;
- }
- /* decrypt PKCS
- *
- * NOTE: input buffer is overwritten with decrypted data!
- *
- * input[in/out] data to decrypt and results are written to
- * sz size of input buffer
- * password password if used. Can be NULL for no password
- * passwordSz size of password buffer
- *
- * returns the total size of decrypted content on success.
- */
- int DecryptContent(byte* input, word32 sz,const char* password,int passwordSz)
- {
- word32 inOutIdx = 0, seqEnd, oid;
- int ret = 0;
- int first, second, length = 0, version, saltSz, id;
- int iterations = 0, keySz = 0;
- #ifdef WOLFSSL_SMALL_STACK
- byte* salt = NULL;
- byte* cbcIv = NULL;
- #else
- byte salt[MAX_SALT_SIZE];
- byte cbcIv[MAX_IV_SIZE];
- #endif
- if (GetAlgoId(input, &inOutIdx, &oid, oidIgnoreType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- first = input[inOutIdx - 2]; /* PKCS version always 2nd to last byte */
- second = input[inOutIdx - 1]; /* version.algo, algo id last byte */
- if (CheckAlgo(first, second, &id, &version) < 0) {
- ERROR_OUT(ASN_INPUT_E, exit_dc); /* Algo ID error */
- }
- if (version == PKCS5v2) {
- if (GetSequence(input, &inOutIdx, &length, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- if (GetAlgoId(input, &inOutIdx, &oid, oidKdfType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- if (oid != PBKDF2_OID) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- }
- if (GetSequence(input, &inOutIdx, &length, sz) <= 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- /* Find the end of this SEQUENCE so we can check for the OPTIONAL and
- * DEFAULT items. */
- seqEnd = inOutIdx + length;
- ret = GetOctetString(input, &inOutIdx, &saltSz, sz);
- if (ret < 0)
- goto exit_dc;
- if (saltSz > MAX_SALT_SIZE) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- #ifdef WOLFSSL_SMALL_STACK
- salt = (byte*)XMALLOC(MAX_SALT_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (salt == NULL) {
- ERROR_OUT(MEMORY_E, exit_dc);
- }
- #endif
- XMEMCPY(salt, &input[inOutIdx], saltSz);
- inOutIdx += saltSz;
- if (GetShortInt(input, &inOutIdx, &iterations, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- /* OPTIONAL key length */
- if (seqEnd > inOutIdx && input[inOutIdx] == ASN_INTEGER) {
- if (GetShortInt(input, &inOutIdx, &keySz, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- }
- /* DEFAULT HMAC is SHA-1 */
- if (seqEnd > inOutIdx) {
- if (GetAlgoId(input, &inOutIdx, &oid, oidHmacType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- }
- #ifdef WOLFSSL_SMALL_STACK
- cbcIv = (byte*)XMALLOC(MAX_IV_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (cbcIv == NULL) {
- ERROR_OUT(MEMORY_E, exit_dc);
- }
- #endif
- if (version == PKCS5v2) {
- /* get encryption algo */
- if (GetAlgoId(input, &inOutIdx, &oid, oidBlkType, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- if (CheckAlgoV2(oid, &id) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc); /* PKCS v2 algo id error */
- }
- ret = GetOctetString(input, &inOutIdx, &length, sz);
- if (ret < 0)
- goto exit_dc;
- if (length > MAX_IV_SIZE) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- XMEMCPY(cbcIv, &input[inOutIdx], length);
- inOutIdx += length;
- }
- if (input[inOutIdx++] != (ASN_CONTEXT_SPECIFIC | 0)) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- if (GetLength(input, &inOutIdx, &length, sz) < 0) {
- ERROR_OUT(ASN_PARSE_E, exit_dc);
- }
- ret = CryptKey(password, passwordSz, salt, saltSz, iterations, id,
- input + inOutIdx, length, version, cbcIv, 0);
- exit_dc:
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(salt, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(cbcIv, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- if (ret == 0) {
- XMEMMOVE(input, input + inOutIdx, length);
- ret = length;
- }
- return ret;
- }
- #endif /* NO_PWDBASED */
- #ifndef NO_RSA
- #ifndef HAVE_USER_RSA
- int wc_RsaPublicKeyDecode(const byte* input, word32* inOutIdx, RsaKey* key,
- word32 inSz)
- {
- int length;
- #if defined(OPENSSL_EXTRA) || defined(RSA_DECODE_EXTRA)
- byte b;
- #endif
- int ret;
- if (input == NULL || inOutIdx == NULL || key == NULL)
- return BAD_FUNC_ARG;
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- key->type = RSA_PUBLIC;
- #if defined(OPENSSL_EXTRA) || defined(RSA_DECODE_EXTRA)
- if ((*inOutIdx + 1) > inSz)
- return BUFFER_E;
- b = input[*inOutIdx];
- if (b != ASN_INTEGER) {
- /* not from decoded cert, will have algo id, skip past */
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- if (SkipObjectId(input, inOutIdx, inSz) < 0)
- return ASN_PARSE_E;
- /* Option NULL ASN.1 tag */
- if (input[*inOutIdx] == ASN_TAG_NULL) {
- ret = GetASNNull(input, inOutIdx, inSz);
- if (ret != 0)
- return ret;
- }
- /* should have bit tag length and seq next */
- ret = CheckBitString(input, inOutIdx, NULL, inSz, 1, NULL);
- if (ret != 0)
- return ret;
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- }
- #endif /* OPENSSL_EXTRA */
- if (GetInt(&key->n, input, inOutIdx, inSz) < 0)
- return ASN_RSA_KEY_E;
- if (GetInt(&key->e, input, inOutIdx, inSz) < 0) {
- mp_clear(&key->n);
- return ASN_RSA_KEY_E;
- }
- #ifdef WOLFSSL_XILINX_CRYPT
- if (wc_InitRsaHw(key) != 0) {
- return BAD_STATE_E;
- }
- #endif
- return 0;
- }
- /* import RSA public key elements (n, e) into RsaKey structure (key) */
- int wc_RsaPublicKeyDecodeRaw(const byte* n, word32 nSz, const byte* e,
- word32 eSz, RsaKey* key)
- {
- if (n == NULL || e == NULL || key == NULL)
- return BAD_FUNC_ARG;
- key->type = RSA_PUBLIC;
- if (mp_init(&key->n) != MP_OKAY)
- return MP_INIT_E;
- if (mp_read_unsigned_bin(&key->n, n, nSz) != 0) {
- mp_clear(&key->n);
- return ASN_GETINT_E;
- }
- if (mp_init(&key->e) != MP_OKAY) {
- mp_clear(&key->n);
- return MP_INIT_E;
- }
- if (mp_read_unsigned_bin(&key->e, e, eSz) != 0) {
- mp_clear(&key->n);
- mp_clear(&key->e);
- return ASN_GETINT_E;
- }
- #ifdef WOLFSSL_XILINX_CRYPT
- if (wc_InitRsaHw(key) != 0) {
- return BAD_STATE_E;
- }
- #endif
- return 0;
- }
- #endif /* HAVE_USER_RSA */
- #endif
- #ifndef NO_DH
- int wc_DhKeyDecode(const byte* input, word32* inOutIdx, DhKey* key, word32 inSz)
- {
- int length;
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- if (GetInt(&key->p, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->g, input, inOutIdx, inSz) < 0) {
- return ASN_DH_KEY_E;
- }
- return 0;
- }
- int wc_DhParamsLoad(const byte* input, word32 inSz, byte* p, word32* pInOutSz,
- byte* g, word32* gInOutSz)
- {
- word32 idx = 0;
- int ret;
- int length;
- if (GetSequence(input, &idx, &length, inSz) <= 0)
- return ASN_PARSE_E;
- ret = GetASNInt(input, &idx, &length, inSz);
- if (ret != 0)
- return ret;
- if (length <= (int)*pInOutSz) {
- XMEMCPY(p, &input[idx], length);
- *pInOutSz = length;
- }
- else {
- return BUFFER_E;
- }
- idx += length;
- ret = GetASNInt(input, &idx, &length, inSz);
- if (ret != 0)
- return ret;
- if (length <= (int)*gInOutSz) {
- XMEMCPY(g, &input[idx], length);
- *gInOutSz = length;
- }
- else {
- return BUFFER_E;
- }
- return 0;
- }
- #endif /* NO_DH */
- #ifndef NO_DSA
- int DsaPublicKeyDecode(const byte* input, word32* inOutIdx, DsaKey* key,
- word32 inSz)
- {
- int length;
- if (input == NULL || inOutIdx == NULL || key == NULL) {
- return BAD_FUNC_ARG;
- }
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- if (GetInt(&key->p, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->q, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->g, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->y, input, inOutIdx, inSz) < 0 )
- return ASN_DH_KEY_E;
- key->type = DSA_PUBLIC;
- return 0;
- }
- int DsaPrivateKeyDecode(const byte* input, word32* inOutIdx, DsaKey* key,
- word32 inSz)
- {
- int length, version;
- /* Sanity checks on input */
- if (input == NULL || inOutIdx == NULL || key == NULL) {
- return BAD_FUNC_ARG;
- }
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- if (GetMyVersion(input, inOutIdx, &version, inSz) < 0)
- return ASN_PARSE_E;
- if (GetInt(&key->p, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->q, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->g, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->y, input, inOutIdx, inSz) < 0 ||
- GetInt(&key->x, input, inOutIdx, inSz) < 0 )
- return ASN_DH_KEY_E;
- key->type = DSA_PRIVATE;
- return 0;
- }
- static mp_int* GetDsaInt(DsaKey* key, int idx)
- {
- if (idx == 0)
- return &key->p;
- if (idx == 1)
- return &key->q;
- if (idx == 2)
- return &key->g;
- if (idx == 3)
- return &key->y;
- if (idx == 4)
- return &key->x;
- return NULL;
- }
- /* Release Tmp DSA resources */
- static INLINE void FreeTmpDsas(byte** tmps, void* heap)
- {
- int i;
- for (i = 0; i < DSA_INTS; i++)
- XFREE(tmps[i], heap, DYNAMIC_TYPE_DSA);
- (void)heap;
- }
- /* Convert DsaKey key to DER format, write to output (inLen), return bytes
- written */
- int wc_DsaKeyToDer(DsaKey* key, byte* output, word32 inLen)
- {
- word32 seqSz, verSz, rawLen, intTotalLen = 0;
- word32 sizes[DSA_INTS];
- int i, j, outLen, ret = 0, mpSz;
- byte seq[MAX_SEQ_SZ];
- byte ver[MAX_VERSION_SZ];
- byte* tmps[DSA_INTS];
- if (!key || !output)
- return BAD_FUNC_ARG;
- if (key->type != DSA_PRIVATE)
- return BAD_FUNC_ARG;
- for (i = 0; i < DSA_INTS; i++)
- tmps[i] = NULL;
- /* write all big ints from key to DER tmps */
- for (i = 0; i < DSA_INTS; i++) {
- mp_int* keyInt = GetDsaInt(key, i);
- rawLen = mp_unsigned_bin_size(keyInt) + 1;
- tmps[i] = (byte*)XMALLOC(rawLen + MAX_SEQ_SZ, key->heap,
- DYNAMIC_TYPE_DSA);
- if (tmps[i] == NULL) {
- ret = MEMORY_E;
- break;
- }
- mpSz = SetASNIntMP(keyInt, -1, tmps[i]);
- if (mpSz < 0) {
- ret = mpSz;
- break;
- }
- intTotalLen += (sizes[i] = mpSz);
- }
- if (ret != 0) {
- FreeTmpDsas(tmps, key->heap);
- return ret;
- }
- /* make headers */
- verSz = SetMyVersion(0, ver, FALSE);
- seqSz = SetSequence(verSz + intTotalLen, seq);
- outLen = seqSz + verSz + intTotalLen;
- if (outLen > (int)inLen)
- return BAD_FUNC_ARG;
- /* write to output */
- XMEMCPY(output, seq, seqSz);
- j = seqSz;
- XMEMCPY(output + j, ver, verSz);
- j += verSz;
- for (i = 0; i < DSA_INTS; i++) {
- XMEMCPY(output + j, tmps[i], sizes[i]);
- j += sizes[i];
- }
- FreeTmpDsas(tmps, key->heap);
- return outLen;
- }
- #endif /* NO_DSA */
- void InitDecodedCert(DecodedCert* cert, byte* source, word32 inSz, void* heap)
- {
- if (cert != NULL) {
- XMEMSET(cert, 0, sizeof(DecodedCert));
- cert->subjectCNEnc = CTC_UTF8;
- cert->issuer[0] = '\0';
- cert->subject[0] = '\0';
- cert->source = source; /* don't own */
- cert->maxIdx = inSz; /* can't go over this index */
- cert->heap = heap;
- #ifdef WOLFSSL_CERT_GEN
- cert->subjectSNEnc = CTC_UTF8;
- cert->subjectCEnc = CTC_PRINTABLE;
- cert->subjectLEnc = CTC_UTF8;
- cert->subjectSTEnc = CTC_UTF8;
- cert->subjectOEnc = CTC_UTF8;
- cert->subjectOUEnc = CTC_UTF8;
- #endif /* WOLFSSL_CERT_GEN */
- InitSignatureCtx(&cert->sigCtx, heap, INVALID_DEVID);
- }
- }
- void FreeAltNames(DNS_entry* altNames, void* heap)
- {
- (void)heap;
- while (altNames) {
- DNS_entry* tmp = altNames->next;
- XFREE(altNames->name, heap, DYNAMIC_TYPE_ALTNAME);
- XFREE(altNames, heap, DYNAMIC_TYPE_ALTNAME);
- altNames = tmp;
- }
- }
- #ifndef IGNORE_NAME_CONSTRAINTS
- void FreeNameSubtrees(Base_entry* names, void* heap)
- {
- (void)heap;
- while (names) {
- Base_entry* tmp = names->next;
- XFREE(names->name, heap, DYNAMIC_TYPE_ALTNAME);
- XFREE(names, heap, DYNAMIC_TYPE_ALTNAME);
- names = tmp;
- }
- }
- #endif /* IGNORE_NAME_CONSTRAINTS */
- void FreeDecodedCert(DecodedCert* cert)
- {
- if (cert->subjectCNStored == 1)
- XFREE(cert->subjectCN, cert->heap, DYNAMIC_TYPE_SUBJECT_CN);
- if (cert->pubKeyStored == 1)
- XFREE(cert->publicKey, cert->heap, DYNAMIC_TYPE_PUBLIC_KEY);
- if (cert->weOwnAltNames && cert->altNames)
- FreeAltNames(cert->altNames, cert->heap);
- #ifndef IGNORE_NAME_CONSTRAINTS
- if (cert->altEmailNames)
- FreeAltNames(cert->altEmailNames, cert->heap);
- if (cert->permittedNames)
- FreeNameSubtrees(cert->permittedNames, cert->heap);
- if (cert->excludedNames)
- FreeNameSubtrees(cert->excludedNames, cert->heap);
- #endif /* IGNORE_NAME_CONSTRAINTS */
- #ifdef WOLFSSL_SEP
- XFREE(cert->deviceType, cert->heap, DYNAMIC_TYPE_X509_EXT);
- XFREE(cert->hwType, cert->heap, DYNAMIC_TYPE_X509_EXT);
- XFREE(cert->hwSerialNum, cert->heap, DYNAMIC_TYPE_X509_EXT);
- #endif /* WOLFSSL_SEP */
- #ifdef OPENSSL_EXTRA
- if (cert->issuerName.fullName != NULL)
- XFREE(cert->issuerName.fullName, cert->heap, DYNAMIC_TYPE_X509);
- if (cert->subjectName.fullName != NULL)
- XFREE(cert->subjectName.fullName, cert->heap, DYNAMIC_TYPE_X509);
- #endif /* OPENSSL_EXTRA */
- FreeSignatureCtx(&cert->sigCtx);
- }
- static int GetCertHeader(DecodedCert* cert)
- {
- int ret = 0, len;
- if (GetSequence(cert->source, &cert->srcIdx, &len, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- cert->certBegin = cert->srcIdx;
- if (GetSequence(cert->source, &cert->srcIdx, &len, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- cert->sigIndex = len + cert->srcIdx;
- if (GetExplicitVersion(cert->source, &cert->srcIdx, &cert->version,
- cert->maxIdx) < 0)
- return ASN_PARSE_E;
- if (GetSerialNumber(cert->source, &cert->srcIdx, cert->serial,
- &cert->serialSz, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- return ret;
- }
- #if !defined(NO_RSA)
- /* Store Rsa Key, may save later, Dsa could use in future */
- static int StoreRsaKey(DecodedCert* cert)
- {
- int length;
- word32 recvd = cert->srcIdx;
- if (GetSequence(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- recvd = cert->srcIdx - recvd;
- length += recvd;
- while (recvd--)
- cert->srcIdx--;
- cert->pubKeySize = length;
- cert->publicKey = cert->source + cert->srcIdx;
- cert->srcIdx += length;
- return 0;
- }
- #endif /* !NO_RSA */
- #ifdef HAVE_ECC
- /* return 0 on success if the ECC curve oid sum is supported */
- static int CheckCurve(word32 oid)
- {
- int ret = 0;
- word32 oidSz = 0;
- ret = wc_ecc_get_oid(oid, NULL, &oidSz);
- if (ret < 0 || oidSz <= 0) {
- WOLFSSL_MSG("CheckCurve not found");
- ret = ALGO_ID_E;
- }
- return ret;
- }
- #endif /* HAVE_ECC */
- static int GetKey(DecodedCert* cert)
- {
- int length;
- #ifdef HAVE_NTRU
- int tmpIdx = cert->srcIdx;
- #endif
- if (GetSequence(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- if (GetAlgoId(cert->source, &cert->srcIdx,
- &cert->keyOID, oidKeyType, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- switch (cert->keyOID) {
- #ifndef NO_RSA
- case RSAk:
- {
- int ret;
- ret = CheckBitString(cert->source, &cert->srcIdx, NULL,
- cert->maxIdx, 1, NULL);
- if (ret != 0)
- return ret;
- return StoreRsaKey(cert);
- }
- #endif /* NO_RSA */
- #ifdef HAVE_NTRU
- case NTRUk:
- {
- const byte* key = &cert->source[tmpIdx];
- byte* next = (byte*)key;
- word16 keyLen;
- word32 rc;
- word32 remaining = cert->maxIdx - cert->srcIdx;
- #ifdef WOLFSSL_SMALL_STACK
- byte* keyBlob = NULL;
- #else
- byte keyBlob[MAX_NTRU_KEY_SZ];
- #endif
- rc = ntru_crypto_ntru_encrypt_subjectPublicKeyInfo2PublicKey(key,
- &keyLen, NULL, &next, &remaining);
- if (rc != NTRU_OK)
- return ASN_NTRU_KEY_E;
- if (keyLen > MAX_NTRU_KEY_SZ)
- return ASN_NTRU_KEY_E;
- #ifdef WOLFSSL_SMALL_STACK
- keyBlob = (byte*)XMALLOC(MAX_NTRU_KEY_SZ, NULL,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (keyBlob == NULL)
- return MEMORY_E;
- #endif
- rc = ntru_crypto_ntru_encrypt_subjectPublicKeyInfo2PublicKey(key,
- &keyLen, keyBlob, &next, &remaining);
- if (rc != NTRU_OK) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(keyBlob, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ASN_NTRU_KEY_E;
- }
- if ( (next - key) < 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(keyBlob, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ASN_NTRU_KEY_E;
- }
- cert->srcIdx = tmpIdx + (int)(next - key);
- cert->publicKey = (byte*) XMALLOC(keyLen, cert->heap,
- DYNAMIC_TYPE_PUBLIC_KEY);
- if (cert->publicKey == NULL) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(keyBlob, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return MEMORY_E;
- }
- XMEMCPY(cert->publicKey, keyBlob, keyLen);
- cert->pubKeyStored = 1;
- cert->pubKeySize = keyLen;
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(keyBlob, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return 0;
- }
- #endif /* HAVE_NTRU */
- #ifdef HAVE_ECC
- case ECDSAk:
- {
- int ret;
- if (GetObjectId(cert->source, &cert->srcIdx,
- &cert->pkCurveOID, oidCurveType, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- if (CheckCurve(cert->pkCurveOID) < 0)
- return ECC_CURVE_OID_E;
- /* key header */
- ret = CheckBitString(cert->source, &cert->srcIdx, &length,
- cert->maxIdx, 1, NULL);
- if (ret != 0)
- return ret;
- cert->publicKey = (byte*)XMALLOC(length, cert->heap,
- DYNAMIC_TYPE_PUBLIC_KEY);
- if (cert->publicKey == NULL)
- return MEMORY_E;
- XMEMCPY(cert->publicKey, &cert->source[cert->srcIdx], length);
- cert->pubKeyStored = 1;
- cert->pubKeySize = length;
- cert->srcIdx += length;
- return 0;
- }
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case ED25519k:
- {
- int ret;
- cert->pkCurveOID = ED25519k;
- ret = CheckBitString(cert->source, &cert->srcIdx, &length,
- cert->maxIdx, 1, NULL);
- if (ret != 0)
- return ret;
- cert->publicKey = (byte*) XMALLOC(length, cert->heap,
- DYNAMIC_TYPE_PUBLIC_KEY);
- if (cert->publicKey == NULL)
- return MEMORY_E;
- XMEMCPY(cert->publicKey, &cert->source[cert->srcIdx], length);
- cert->pubKeyStored = 1;
- cert->pubKeySize = length;
- cert->srcIdx += length;
- return 0;
- }
- #endif /* HAVE_ED25519 */
- default:
- return ASN_UNKNOWN_OID_E;
- }
- }
- /* process NAME, either issuer or subject */
- static int GetName(DecodedCert* cert, int nameType)
- {
- int length; /* length of all distinguished names */
- int dummy;
- int ret;
- char* full;
- byte* hash;
- word32 idx;
- #ifdef OPENSSL_EXTRA
- DecodedName* dName =
- (nameType == ISSUER) ? &cert->issuerName : &cert->subjectName;
- int dcnum = 0;
- #endif /* OPENSSL_EXTRA */
- WOLFSSL_MSG("Getting Cert Name");
- if (nameType == ISSUER) {
- full = cert->issuer;
- hash = cert->issuerHash;
- }
- else {
- full = cert->subject;
- hash = cert->subjectHash;
- }
- if (cert->source[cert->srcIdx] == ASN_OBJECT_ID) {
- WOLFSSL_MSG("Trying optional prefix...");
- if (SkipObjectId(cert->source, &cert->srcIdx, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- WOLFSSL_MSG("Got optional prefix");
- }
- /* For OCSP, RFC2560 section 4.1.1 states the issuer hash should be
- * calculated over the entire DER encoding of the Name field, including
- * the tag and length. */
- idx = cert->srcIdx;
- if (GetSequence(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- #ifdef NO_SHA
- ret = wc_Sha256Hash(&cert->source[idx], length + cert->srcIdx - idx, hash);
- #else
- ret = wc_ShaHash(&cert->source[idx], length + cert->srcIdx - idx, hash);
- #endif
- if (ret != 0)
- return ret;
- length += cert->srcIdx;
- idx = 0;
- #ifdef HAVE_PKCS7
- /* store pointer to raw issuer */
- if (nameType == ISSUER) {
- cert->issuerRaw = &cert->source[cert->srcIdx];
- cert->issuerRawLen = length - cert->srcIdx;
- }
- #endif
- #ifndef IGNORE_NAME_CONSTRAINTS
- if (nameType == SUBJECT) {
- cert->subjectRaw = &cert->source[cert->srcIdx];
- cert->subjectRawLen = length - cert->srcIdx;
- }
- #endif
- while (cert->srcIdx < (word32)length) {
- byte b;
- byte joint[2];
- byte tooBig = FALSE;
- int oidSz;
- if (GetSet(cert->source, &cert->srcIdx, &dummy, cert->maxIdx) < 0) {
- WOLFSSL_MSG("Cert name lacks set header, trying sequence");
- }
- if (GetSequence(cert->source, &cert->srcIdx, &dummy, cert->maxIdx) <= 0)
- return ASN_PARSE_E;
- ret = GetASNObjectId(cert->source, &cert->srcIdx, &oidSz, cert->maxIdx);
- if (ret != 0)
- return ret;
- /* make sure there is room for joint */
- if ((cert->srcIdx + sizeof(joint)) > cert->maxIdx)
- return ASN_PARSE_E;
- XMEMCPY(joint, &cert->source[cert->srcIdx], sizeof(joint));
- /* v1 name types */
- if (joint[0] == 0x55 && joint[1] == 0x04) {
- byte id;
- byte copy = FALSE;
- int strLen;
- cert->srcIdx += 2;
- id = cert->source[cert->srcIdx++];
- b = cert->source[cert->srcIdx++]; /* encoding */
- if (GetLength(cert->source, &cert->srcIdx, &strLen,
- cert->maxIdx) < 0)
- return ASN_PARSE_E;
- if ( (strLen + 14) > (int)(ASN_NAME_MAX - idx)) {
- /* include biggest pre fix header too 4 = "/serialNumber=" */
- WOLFSSL_MSG("ASN Name too big, skipping");
- tooBig = TRUE;
- }
- if (id == ASN_COMMON_NAME) {
- if (nameType == SUBJECT) {
- cert->subjectCN = (char *)&cert->source[cert->srcIdx];
- cert->subjectCNLen = strLen;
- cert->subjectCNEnc = b;
- }
- if (!tooBig) {
- XMEMCPY(&full[idx], "/CN=", 4);
- idx += 4;
- copy = TRUE;
- }
- #ifdef OPENSSL_EXTRA
- dName->cnIdx = cert->srcIdx;
- dName->cnLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_SUR_NAME) {
- if (!tooBig) {
- XMEMCPY(&full[idx], "/SN=", 4);
- idx += 4;
- copy = TRUE;
- }
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectSN = (char*)&cert->source[cert->srcIdx];
- cert->subjectSNLen = strLen;
- cert->subjectSNEnc = b;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #ifdef OPENSSL_EXTRA
- dName->snIdx = cert->srcIdx;
- dName->snLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_COUNTRY_NAME) {
- if (!tooBig) {
- XMEMCPY(&full[idx], "/C=", 3);
- idx += 3;
- copy = TRUE;
- }
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectC = (char*)&cert->source[cert->srcIdx];
- cert->subjectCLen = strLen;
- cert->subjectCEnc = b;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #ifdef OPENSSL_EXTRA
- dName->cIdx = cert->srcIdx;
- dName->cLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_LOCALITY_NAME) {
- if (!tooBig) {
- XMEMCPY(&full[idx], "/L=", 3);
- idx += 3;
- copy = TRUE;
- }
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectL = (char*)&cert->source[cert->srcIdx];
- cert->subjectLLen = strLen;
- cert->subjectLEnc = b;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #ifdef OPENSSL_EXTRA
- dName->lIdx = cert->srcIdx;
- dName->lLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_STATE_NAME) {
- if (!tooBig) {
- XMEMCPY(&full[idx], "/ST=", 4);
- idx += 4;
- copy = TRUE;
- }
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectST = (char*)&cert->source[cert->srcIdx];
- cert->subjectSTLen = strLen;
- cert->subjectSTEnc = b;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #ifdef OPENSSL_EXTRA
- dName->stIdx = cert->srcIdx;
- dName->stLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_ORG_NAME) {
- if (!tooBig) {
- XMEMCPY(&full[idx], "/O=", 3);
- idx += 3;
- copy = TRUE;
- }
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectO = (char*)&cert->source[cert->srcIdx];
- cert->subjectOLen = strLen;
- cert->subjectOEnc = b;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #ifdef OPENSSL_EXTRA
- dName->oIdx = cert->srcIdx;
- dName->oLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_ORGUNIT_NAME) {
- if (!tooBig) {
- XMEMCPY(&full[idx], "/OU=", 4);
- idx += 4;
- copy = TRUE;
- }
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectOU = (char*)&cert->source[cert->srcIdx];
- cert->subjectOULen = strLen;
- cert->subjectOUEnc = b;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #ifdef OPENSSL_EXTRA
- dName->ouIdx = cert->srcIdx;
- dName->ouLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- else if (id == ASN_SERIAL_NUMBER) {
- if (!tooBig) {
- XMEMCPY(&full[idx], "/serialNumber=", 14);
- idx += 14;
- copy = TRUE;
- }
- #ifdef OPENSSL_EXTRA
- dName->snIdx = cert->srcIdx;
- dName->snLen = strLen;
- #endif /* OPENSSL_EXTRA */
- }
- if (copy && !tooBig) {
- XMEMCPY(&full[idx], &cert->source[cert->srcIdx], strLen);
- idx += strLen;
- }
- cert->srcIdx += strLen;
- }
- else {
- /* skip */
- byte email = FALSE;
- byte pilot = FALSE;
- byte id = 0;
- int adv;
- if (joint[0] == 0x2a && joint[1] == 0x86) /* email id hdr */
- email = TRUE;
- if (joint[0] == 0x9 && joint[1] == 0x92) { /* uid id hdr */
- /* last value of OID is the type of pilot attribute */
- id = cert->source[cert->srcIdx + oidSz - 1];
- pilot = TRUE;
- }
- cert->srcIdx += oidSz + 1;
- if (GetLength(cert->source, &cert->srcIdx, &adv, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- if (adv > (int)(ASN_NAME_MAX - idx)) {
- WOLFSSL_MSG("ASN name too big, skipping");
- tooBig = TRUE;
- }
- if (email) {
- if ( (14 + adv) > (int)(ASN_NAME_MAX - idx)) {
- WOLFSSL_MSG("ASN name too big, skipping");
- tooBig = TRUE;
- }
- if (!tooBig) {
- XMEMCPY(&full[idx], "/emailAddress=", 14);
- idx += 14;
- }
- #ifdef WOLFSSL_CERT_GEN
- if (nameType == SUBJECT) {
- cert->subjectEmail = (char*)&cert->source[cert->srcIdx];
- cert->subjectEmailLen = adv;
- }
- #endif /* WOLFSSL_CERT_GEN */
- #ifdef OPENSSL_EXTRA
- dName->emailIdx = cert->srcIdx;
- dName->emailLen = adv;
- #endif /* OPENSSL_EXTRA */
- #ifndef IGNORE_NAME_CONSTRAINTS
- {
- DNS_entry* emailName = NULL;
- emailName = (DNS_entry*)XMALLOC(sizeof(DNS_entry),
- cert->heap, DYNAMIC_TYPE_ALTNAME);
- if (emailName == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- return MEMORY_E;
- }
- emailName->type = 0;
- emailName->name = (char*)XMALLOC(adv + 1,
- cert->heap, DYNAMIC_TYPE_ALTNAME);
- if (emailName->name == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- XFREE(emailName, cert->heap, DYNAMIC_TYPE_ALTNAME);
- return MEMORY_E;
- }
- XMEMCPY(emailName->name,
- &cert->source[cert->srcIdx], adv);
- emailName->name[adv] = 0;
- emailName->next = cert->altEmailNames;
- cert->altEmailNames = emailName;
- }
- #endif /* IGNORE_NAME_CONSTRAINTS */
- if (!tooBig) {
- XMEMCPY(&full[idx], &cert->source[cert->srcIdx], adv);
- idx += adv;
- }
- }
- if (pilot) {
- if ( (5 + adv) > (int)(ASN_NAME_MAX - idx)) {
- WOLFSSL_MSG("ASN name too big, skipping");
- tooBig = TRUE;
- }
- if (!tooBig) {
- switch (id) {
- case ASN_USER_ID:
- XMEMCPY(&full[idx], "/UID=", 5);
- idx += 5;
- #ifdef OPENSSL_EXTRA
- dName->uidIdx = cert->srcIdx;
- dName->uidLen = adv;
- #endif /* OPENSSL_EXTRA */
- break;
- case ASN_DOMAIN_COMPONENT:
- XMEMCPY(&full[idx], "/DC=", 4);
- idx += 4;
- #ifdef OPENSSL_EXTRA
- dName->dcIdx[dcnum] = cert->srcIdx;
- dName->dcLen[dcnum] = adv;
- dName->dcNum = dcnum + 1;
- dcnum++;
- #endif /* OPENSSL_EXTRA */
- break;
- default:
- WOLFSSL_MSG("Unknown pilot attribute type");
- return ASN_PARSE_E;
- }
- XMEMCPY(&full[idx], &cert->source[cert->srcIdx], adv);
- idx += adv;
- }
- }
- cert->srcIdx += adv;
- }
- }
- full[idx++] = 0;
- #ifdef OPENSSL_EXTRA
- {
- int totalLen = 0;
- int i = 0;
- if (dName->cnLen != 0)
- totalLen += dName->cnLen + 4;
- if (dName->snLen != 0)
- totalLen += dName->snLen + 4;
- if (dName->cLen != 0)
- totalLen += dName->cLen + 3;
- if (dName->lLen != 0)
- totalLen += dName->lLen + 3;
- if (dName->stLen != 0)
- totalLen += dName->stLen + 4;
- if (dName->oLen != 0)
- totalLen += dName->oLen + 3;
- if (dName->ouLen != 0)
- totalLen += dName->ouLen + 4;
- if (dName->emailLen != 0)
- totalLen += dName->emailLen + 14;
- if (dName->uidLen != 0)
- totalLen += dName->uidLen + 5;
- if (dName->serialLen != 0)
- totalLen += dName->serialLen + 14;
- if (dName->dcNum != 0){
- for (i = 0;i < dName->dcNum;i++)
- totalLen += dName->dcLen[i] + 4;
- }
- dName->fullName = (char*)XMALLOC(totalLen + 1, cert->heap,
- DYNAMIC_TYPE_X509);
- if (dName->fullName != NULL) {
- idx = 0;
- if (dName->cnLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], "/CN=", 4);
- idx += 4;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->cnIdx], dName->cnLen);
- dName->cnIdx = idx;
- idx += dName->cnLen;
- }
- if (dName->snLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], "/SN=", 4);
- idx += 4;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->snIdx], dName->snLen);
- dName->snIdx = idx;
- idx += dName->snLen;
- }
- if (dName->cLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], "/C=", 3);
- idx += 3;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->cIdx], dName->cLen);
- dName->cIdx = idx;
- idx += dName->cLen;
- }
- if (dName->lLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], "/L=", 3);
- idx += 3;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->lIdx], dName->lLen);
- dName->lIdx = idx;
- idx += dName->lLen;
- }
- if (dName->stLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], "/ST=", 4);
- idx += 4;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->stIdx], dName->stLen);
- dName->stIdx = idx;
- idx += dName->stLen;
- }
- if (dName->oLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], "/O=", 3);
- idx += 3;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->oIdx], dName->oLen);
- dName->oIdx = idx;
- idx += dName->oLen;
- }
- if (dName->ouLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], "/OU=", 4);
- idx += 4;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->ouIdx], dName->ouLen);
- dName->ouIdx = idx;
- idx += dName->ouLen;
- }
- if (dName->emailLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], "/emailAddress=", 14);
- idx += 14;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->emailIdx], dName->emailLen);
- dName->emailIdx = idx;
- idx += dName->emailLen;
- }
- for (i = 0;i < dName->dcNum;i++){
- if (dName->dcLen[i] != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], "/DC=", 4);
- idx += 4;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->dcIdx[i]], dName->dcLen[i]);
- dName->dcIdx[i] = idx;
- idx += dName->dcLen[i];
- }
- }
- if (dName->uidLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], "/UID=", 5);
- idx += 5;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->uidIdx], dName->uidLen);
- dName->uidIdx = idx;
- idx += dName->uidLen;
- }
- if (dName->serialLen != 0) {
- dName->entryCount++;
- XMEMCPY(&dName->fullName[idx], "/serialNumber=", 14);
- idx += 14;
- XMEMCPY(&dName->fullName[idx],
- &cert->source[dName->serialIdx], dName->serialLen);
- dName->serialIdx = idx;
- idx += dName->serialLen;
- }
- dName->fullName[idx] = '\0';
- dName->fullNameLen = totalLen;
- }
- }
- #endif /* OPENSSL_EXTRA */
- return 0;
- }
- #ifndef NO_ASN_TIME
- #if !defined(NO_TIME_H) && defined(USE_WOLF_VALIDDATE)
- /* to the second */
- static int DateGreaterThan(const struct tm* a, const struct tm* b)
- {
- if (a->tm_year > b->tm_year)
- return 1;
- if (a->tm_year == b->tm_year && a->tm_mon > b->tm_mon)
- return 1;
- if (a->tm_year == b->tm_year && a->tm_mon == b->tm_mon &&
- a->tm_mday > b->tm_mday)
- return 1;
- if (a->tm_year == b->tm_year && a->tm_mon == b->tm_mon &&
- a->tm_mday == b->tm_mday && a->tm_hour > b->tm_hour)
- return 1;
- if (a->tm_year == b->tm_year && a->tm_mon == b->tm_mon &&
- a->tm_mday == b->tm_mday && a->tm_hour == b->tm_hour &&
- a->tm_min > b->tm_min)
- return 1;
- if (a->tm_year == b->tm_year && a->tm_mon == b->tm_mon &&
- a->tm_mday == b->tm_mday && a->tm_hour == b->tm_hour &&
- a->tm_min == b->tm_min && a->tm_sec > b->tm_sec)
- return 1;
- return 0; /* false */
- }
- static INLINE int DateLessThan(const struct tm* a, const struct tm* b)
- {
- return DateGreaterThan(b,a);
- }
- #if defined(WOLFSSL_MYSQL_COMPATIBLE) || defined(OPENSSL_EXTRA) \
- || defined(WOLFSSL_NGINX) || defined(WOLFSSL_HAPROXY)
- int GetTimeString(byte* date, int format, char* buf, int len)
- {
- struct tm t;
- int idx = 0;
- if (!ExtractDate(date, (unsigned char)format, &t, &idx)) {
- return 0;
- }
- if (date[idx] != 'Z') {
- WOLFSSL_MSG("UTCtime, not Zulu") ;
- return 0;
- }
- /* place month in buffer */
- buf[0] = '\0';
- switch(t.tm_mon) {
- case 0: XSTRNCAT(buf, "Jan ", 4); break;
- case 1: XSTRNCAT(buf, "Feb ", 4); break;
- case 2: XSTRNCAT(buf, "Mar ", 4); break;
- case 3: XSTRNCAT(buf, "Apr ", 4); break;
- case 4: XSTRNCAT(buf, "May ", 4); break;
- case 5: XSTRNCAT(buf, "Jun ", 4); break;
- case 6: XSTRNCAT(buf, "Jul ", 4); break;
- case 7: XSTRNCAT(buf, "Aug ", 4); break;
- case 8: XSTRNCAT(buf, "Sep ", 4); break;
- case 9: XSTRNCAT(buf, "Oct ", 4); break;
- case 10: XSTRNCAT(buf, "Nov ", 4); break;
- case 11: XSTRNCAT(buf, "Dec ", 4); break;
- default:
- return 0;
- }
- idx = 4; /* use idx now for char buffer */
- buf[idx] = ' ';
- XSNPRINTF(buf + idx, len - idx, "%2d %02d:%02d:%02d %d GMT",
- t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec, t.tm_year + 1900);
- return 1;
- }
- #endif /* WOLFSSL_MYSQL_COMPATIBLE */
- int ExtractDate(const unsigned char* date, unsigned char format,
- struct tm* certTime, int* idx)
- {
- XMEMSET(certTime, 0, sizeof(struct tm));
- if (format == ASN_UTC_TIME) {
- if (btoi(date[0]) >= 5)
- certTime->tm_year = 1900;
- else
- certTime->tm_year = 2000;
- }
- else { /* format == GENERALIZED_TIME */
- certTime->tm_year += btoi(date[*idx]) * 1000; *idx = *idx + 1;
- certTime->tm_year += btoi(date[*idx]) * 100; *idx = *idx + 1;
- }
- /* adjust tm_year, tm_mon */
- GetTime((int*)&certTime->tm_year, date, idx); certTime->tm_year -= 1900;
- GetTime((int*)&certTime->tm_mon, date, idx); certTime->tm_mon -= 1;
- GetTime((int*)&certTime->tm_mday, date, idx);
- GetTime((int*)&certTime->tm_hour, date, idx);
- GetTime((int*)&certTime->tm_min, date, idx);
- GetTime((int*)&certTime->tm_sec, date, idx);
- return 1;
- }
- /* like atoi but only use first byte */
- /* Make sure before and after dates are valid */
- int ValidateDate(const byte* date, byte format, int dateType)
- {
- time_t ltime;
- struct tm certTime;
- struct tm* localTime;
- struct tm* tmpTime = NULL;
- int i = 0;
- int timeDiff = 0 ;
- int diffHH = 0 ; int diffMM = 0 ;
- int diffSign = 0 ;
- #if defined(NEED_TMP_TIME)
- struct tm tmpTimeStorage;
- tmpTime = &tmpTimeStorage;
- #else
- (void)tmpTime;
- #endif
- ltime = XTIME(0);
- #ifdef WOLFSSL_BEFORE_DATE_CLOCK_SKEW
- if (dateType == BEFORE) {
- WOLFSSL_MSG("Skewing local time for before date check");
- ltime += WOLFSSL_BEFORE_DATE_CLOCK_SKEW;
- }
- #endif
- #ifdef WOLFSSL_AFTER_DATE_CLOCK_SKEW
- if (dateType == AFTER) {
- WOLFSSL_MSG("Skewing local time for after date check");
- ltime -= WOLFSSL_AFTER_DATE_CLOCK_SKEW;
- }
- #endif
- if (!ExtractDate(date, format, &certTime, &i)) {
- WOLFSSL_MSG("Error extracting the date");
- return 0;
- }
- if ((date[i] == '+') || (date[i] == '-')) {
- WOLFSSL_MSG("Using time differential, not Zulu") ;
- diffSign = date[i++] == '+' ? 1 : -1 ;
- GetTime(&diffHH, date, &i);
- GetTime(&diffMM, date, &i);
- timeDiff = diffSign * (diffHH*60 + diffMM) * 60 ;
- } else if (date[i] != 'Z') {
- WOLFSSL_MSG("UTCtime, niether Zulu or time differential") ;
- return 0;
- }
- ltime -= (time_t)timeDiff ;
- localTime = XGMTIME(<ime, tmpTime);
- if (localTime == NULL) {
- WOLFSSL_MSG("XGMTIME failed");
- return 0;
- }
- if (dateType == BEFORE) {
- if (DateLessThan(localTime, &certTime)) {
- WOLFSSL_MSG("Date BEFORE check failed");
- return 0;
- }
- }
- else { /* dateType == AFTER */
- if (DateGreaterThan(localTime, &certTime)) {
- WOLFSSL_MSG("Date AFTER check failed");
- return 0;
- }
- }
- return 1;
- }
- #endif /* !NO_TIME_H && USE_WOLF_VALIDDATE */
- int wc_GetTime(void* timePtr, word32 timeSize)
- {
- time_t* ltime = (time_t*)timePtr;
- if (timePtr == NULL) {
- return BAD_FUNC_ARG;
- }
- if ((word32)sizeof(time_t) > timeSize) {
- return BUFFER_E;
- }
- *ltime = XTIME(0);
- return 0;
- }
- #endif /* !NO_ASN_TIME */
- static int GetDate(DecodedCert* cert, int dateType)
- {
- int length;
- byte date[MAX_DATE_SIZE];
- byte b;
- word32 startIdx = 0;
- XMEMSET(date, 0, MAX_DATE_SIZE);
- if (dateType == BEFORE)
- cert->beforeDate = &cert->source[cert->srcIdx];
- else
- cert->afterDate = &cert->source[cert->srcIdx];
- startIdx = cert->srcIdx;
- b = cert->source[cert->srcIdx++];
- if (b != ASN_UTC_TIME && b != ASN_GENERALIZED_TIME)
- return ASN_TIME_E;
- if (GetLength(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- if (length > MAX_DATE_SIZE || length < MIN_DATE_SIZE)
- return ASN_DATE_SZ_E;
- XMEMCPY(date, &cert->source[cert->srcIdx], length);
- cert->srcIdx += length;
- if (dateType == BEFORE)
- cert->beforeDateLen = cert->srcIdx - startIdx;
- else
- cert->afterDateLen = cert->srcIdx - startIdx;
- #ifndef NO_ASN_TIME
- if (!XVALIDATE_DATE(date, b, dateType)) {
- if (dateType == BEFORE)
- return ASN_BEFORE_DATE_E;
- else
- return ASN_AFTER_DATE_E;
- }
- #endif
- return 0;
- }
- static int GetValidity(DecodedCert* cert, int verify)
- {
- int length;
- int badDate = 0;
- if (GetSequence(cert->source, &cert->srcIdx, &length, cert->maxIdx) < 0)
- return ASN_PARSE_E;
- if (GetDate(cert, BEFORE) < 0 && verify != NO_VERIFY)
- badDate = ASN_BEFORE_DATE_E; /* continue parsing */
- if (GetDate(cert, AFTER) < 0 && verify != NO_VERIFY)
- return ASN_AFTER_DATE_E;
- if (badDate != 0)
- return badDate;
- return 0;
- }
- int DecodeToKey(DecodedCert* cert, int verify)
- {
- int badDate = 0;
- int ret;
- if ( (ret = GetCertHeader(cert)) < 0)
- return ret;
- WOLFSSL_MSG("Got Cert Header");
- if ( (ret = GetAlgoId(cert->source, &cert->srcIdx, &cert->signatureOID,
- oidSigType, cert->maxIdx)) < 0)
- return ret;
- WOLFSSL_MSG("Got Algo ID");
- if ( (ret = GetName(cert, ISSUER)) < 0)
- return ret;
- if ( (ret = GetValidity(cert, verify)) < 0)
- badDate = ret;
- if ( (ret = GetName(cert, SUBJECT)) < 0)
- return ret;
- WOLFSSL_MSG("Got Subject Name");
- if ( (ret = GetKey(cert)) < 0)
- return ret;
- WOLFSSL_MSG("Got Key");
- if (badDate != 0)
- return badDate;
- return ret;
- }
- static int GetSignature(DecodedCert* cert)
- {
- int length;
- int ret;
- ret = CheckBitString(cert->source, &cert->srcIdx, &length, cert->maxIdx, 1,
- NULL);
- if (ret != 0)
- return ret;
- cert->sigLength = length;
- cert->signature = &cert->source[cert->srcIdx];
- cert->srcIdx += cert->sigLength;
- return 0;
- }
- static word32 SetOctetString8Bit(word32 len, byte* output)
- {
- output[0] = ASN_OCTET_STRING;
- output[1] = (byte)len;
- return 2;
- }
- static word32 SetDigest(const byte* digest, word32 digSz, byte* output)
- {
- word32 idx = SetOctetString8Bit(digSz, output);
- XMEMCPY(&output[idx], digest, digSz);
- return idx + digSz;
- }
- static word32 BytePrecision(word32 value)
- {
- word32 i;
- for (i = sizeof(value); i; --i)
- if (value >> ((i - 1) * WOLFSSL_BIT_SIZE))
- break;
- return i;
- }
- WOLFSSL_LOCAL word32 SetLength(word32 length, byte* output)
- {
- word32 i = 0, j;
- if (length < ASN_LONG_LENGTH)
- output[i++] = (byte)length;
- else {
- output[i++] = (byte)(BytePrecision(length) | ASN_LONG_LENGTH);
- for (j = BytePrecision(length); j; --j) {
- output[i] = (byte)(length >> ((j - 1) * WOLFSSL_BIT_SIZE));
- i++;
- }
- }
- return i;
- }
- WOLFSSL_LOCAL word32 SetSequence(word32 len, byte* output)
- {
- output[0] = ASN_SEQUENCE | ASN_CONSTRUCTED;
- return SetLength(len, output + 1) + 1;
- }
- WOLFSSL_LOCAL word32 SetOctetString(word32 len, byte* output)
- {
- output[0] = ASN_OCTET_STRING;
- return SetLength(len, output + 1) + 1;
- }
- /* Write a set header to output */
- WOLFSSL_LOCAL word32 SetSet(word32 len, byte* output)
- {
- output[0] = ASN_SET | ASN_CONSTRUCTED;
- return SetLength(len, output + 1) + 1;
- }
- WOLFSSL_LOCAL word32 SetImplicit(byte tag, byte number, word32 len, byte* output)
- {
- output[0] = ((tag == ASN_SEQUENCE || tag == ASN_SET) ? ASN_CONSTRUCTED : 0)
- | ASN_CONTEXT_SPECIFIC | number;
- return SetLength(len, output + 1) + 1;
- }
- WOLFSSL_LOCAL word32 SetExplicit(byte number, word32 len, byte* output)
- {
- output[0] = ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | number;
- return SetLength(len, output + 1) + 1;
- }
- #if defined(HAVE_ECC)
- static int SetCurve(ecc_key* key, byte* output)
- {
- #ifdef HAVE_OID_ENCODING
- int ret;
- #endif
- int idx = 0;
- word32 oidSz = 0;
- /* validate key */
- if (key == NULL || key->dp == NULL) {
- return BAD_FUNC_ARG;
- }
- #ifdef HAVE_OID_ENCODING
- ret = EncodeObjectId(key->dp->oid, key->dp->oidSz, NULL, &oidSz);
- if (ret != 0) {
- return ret;
- }
- #else
- oidSz = key->dp->oidSz;
- #endif
- idx += SetObjectId(oidSz, output);
- #ifdef HAVE_OID_ENCODING
- ret = EncodeObjectId(key->dp->oid, key->dp->oidSz, output+idx, &oidSz);
- if (ret != 0) {
- return ret;
- }
- #else
- XMEMCPY(output+idx, key->dp->oid, oidSz);
- #endif
- idx += oidSz;
- return idx;
- }
- #endif /* HAVE_ECC */
- static INLINE int IsSigAlgoECDSA(int algoOID)
- {
- /* ECDSA sigAlgo must not have ASN1 NULL parameters */
- if (algoOID == CTC_SHAwECDSA || algoOID == CTC_SHA256wECDSA ||
- algoOID == CTC_SHA384wECDSA || algoOID == CTC_SHA512wECDSA) {
- return 1;
- }
- return 0;
- }
- WOLFSSL_LOCAL word32 SetAlgoID(int algoOID, byte* output, int type, int curveSz)
- {
- word32 tagSz, idSz, seqSz, algoSz = 0;
- const byte* algoName = 0;
- byte ID_Length[1 + MAX_LENGTH_SZ];
- byte seqArray[MAX_SEQ_SZ + 1]; /* add object_id to end */
- tagSz = (type == oidHashType ||
- (type == oidSigType && !IsSigAlgoECDSA(algoOID) &&
- algoOID != ED25519k) ||
- (type == oidKeyType && algoOID == RSAk)) ? 2 : 0;
- algoName = OidFromId(algoOID, type, &algoSz);
- if (algoName == NULL) {
- WOLFSSL_MSG("Unknown Algorithm");
- return 0;
- }
- idSz = SetObjectId(algoSz, ID_Length);
- seqSz = SetSequence(idSz + algoSz + tagSz + curveSz, seqArray);
- XMEMCPY(output, seqArray, seqSz);
- XMEMCPY(output + seqSz, ID_Length, idSz);
- XMEMCPY(output + seqSz + idSz, algoName, algoSz);
- if (tagSz == 2)
- SetASNNull(&output[seqSz + idSz + algoSz]);
- return seqSz + idSz + algoSz + tagSz;
- }
- word32 wc_EncodeSignature(byte* out, const byte* digest, word32 digSz,
- int hashOID)
- {
- byte digArray[MAX_ENCODED_DIG_SZ];
- byte algoArray[MAX_ALGO_SZ];
- byte seqArray[MAX_SEQ_SZ];
- word32 encDigSz, algoSz, seqSz;
- encDigSz = SetDigest(digest, digSz, digArray);
- algoSz = SetAlgoID(hashOID, algoArray, oidHashType, 0);
- seqSz = SetSequence(encDigSz + algoSz, seqArray);
- XMEMCPY(out, seqArray, seqSz);
- XMEMCPY(out + seqSz, algoArray, algoSz);
- XMEMCPY(out + seqSz + algoSz, digArray, encDigSz);
- return encDigSz + algoSz + seqSz;
- }
- int wc_GetCTC_HashOID(int type)
- {
- switch (type) {
- #ifdef WOLFSSL_MD2
- case MD2:
- return MD2h;
- #endif
- #ifndef NO_MD5
- case WC_MD5:
- return MD5h;
- #endif
- #ifndef NO_SHA
- case WC_SHA:
- return SHAh;
- #endif
- #ifdef WOLFSSL_SHA224
- case WC_SHA224:
- return SHA224h;
- #endif
- #ifndef NO_SHA256
- case WC_SHA256:
- return SHA256h;
- #endif
- #ifdef WOLFSSL_SHA384
- case WC_SHA384:
- return SHA384h;
- #endif
- #ifdef WOLFSSL_SHA512
- case WC_SHA512:
- return SHA512h;
- #endif
- default:
- return 0;
- };
- }
- void InitSignatureCtx(SignatureCtx* sigCtx, void* heap, int devId)
- {
- if (sigCtx) {
- XMEMSET(sigCtx, 0, sizeof(SignatureCtx));
- sigCtx->devId = devId;
- sigCtx->heap = heap;
- }
- }
- void FreeSignatureCtx(SignatureCtx* sigCtx)
- {
- if (sigCtx == NULL)
- return;
- if (sigCtx->digest) {
- XFREE(sigCtx->digest, sigCtx->heap, DYNAMIC_TYPE_DIGEST);
- sigCtx->digest = NULL;
- }
- #ifndef NO_RSA
- if (sigCtx->plain) {
- XFREE(sigCtx->plain, sigCtx->heap, DYNAMIC_TYPE_SIGNATURE);
- sigCtx->plain = NULL;
- }
- #endif
- if (sigCtx->key.ptr) {
- switch (sigCtx->keyOID) {
- #ifndef NO_RSA
- case RSAk:
- wc_FreeRsaKey(sigCtx->key.rsa);
- XFREE(sigCtx->key.ptr, sigCtx->heap, DYNAMIC_TYPE_RSA);
- break;
- #endif /* !NO_RSA */
- #ifdef HAVE_ECC
- case ECDSAk:
- wc_ecc_free(sigCtx->key.ecc);
- XFREE(sigCtx->key.ecc, sigCtx->heap, DYNAMIC_TYPE_ECC);
- break;
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case ED25519k:
- wc_ed25519_free(sigCtx->key.ed25519);
- XFREE(sigCtx->key.ed25519, sigCtx->heap, DYNAMIC_TYPE_ED25519);
- break;
- #endif /* HAVE_ED25519 */
- default:
- break;
- } /* switch (keyOID) */
- sigCtx->key.ptr = NULL;
- }
- /* reset state, we are done */
- sigCtx->state = SIG_STATE_BEGIN;
- }
- static int HashForSignature(const byte* buf, word32 bufSz, word32 sigOID,
- byte* digest, int* typeH, int* digestSz, int verify)
- {
- int ret = 0;
- (void)verify;
- switch (sigOID) {
- #if defined(WOLFSSL_MD2)
- case CTC_MD2wRSA:
- if (!verify) {
- ret = HASH_TYPE_E;
- WOLFSSL_MSG("MD2 not supported for signing");
- }
- else if ((ret = wc_Md2Hash(buf, bufSz, digest)) == 0) {
- *typeH = MD2h;
- *digestSz = MD2_DIGEST_SIZE;
- }
- break;
- #endif
- #ifndef NO_MD5
- case CTC_MD5wRSA:
- if ((ret = wc_Md5Hash(buf, bufSz, digest)) == 0) {
- *typeH = MD5h;
- *digestSz = WC_MD5_DIGEST_SIZE;
- }
- break;
- #endif
- #ifndef NO_SHA
- case CTC_SHAwRSA:
- case CTC_SHAwDSA:
- case CTC_SHAwECDSA:
- if ((ret = wc_ShaHash(buf, bufSz, digest)) == 0) {
- *typeH = SHAh;
- *digestSz = WC_SHA_DIGEST_SIZE;
- }
- break;
- #endif
- #ifdef WOLFSSL_SHA224
- case CTC_SHA224wRSA:
- case CTC_SHA224wECDSA:
- if ((ret = wc_Sha224Hash(buf, bufSz, digest)) == 0) {
- *typeH = SHA224h;
- *digestSz = WC_SHA224_DIGEST_SIZE;
- }
- break;
- #endif
- #ifndef NO_SHA256
- case CTC_SHA256wRSA:
- case CTC_SHA256wECDSA:
- if ((ret = wc_Sha256Hash(buf, bufSz, digest)) == 0) {
- *typeH = SHA256h;
- *digestSz = WC_SHA256_DIGEST_SIZE;
- }
- break;
- #endif
- #ifdef WOLFSSL_SHA384
- case CTC_SHA384wRSA:
- case CTC_SHA384wECDSA:
- if ((ret = wc_Sha384Hash(buf, bufSz, digest)) == 0) {
- *typeH = SHA384h;
- *digestSz = WC_SHA384_DIGEST_SIZE;
- }
- break;
- #endif
- #ifdef WOLFSSL_SHA512
- case CTC_SHA512wRSA:
- case CTC_SHA512wECDSA:
- if ((ret = wc_Sha512Hash(buf, bufSz, digest)) == 0) {
- *typeH = SHA512h;
- *digestSz = WC_SHA512_DIGEST_SIZE;
- }
- break;
- #endif
- case CTC_ED25519:
- /* Hashes done in signing operation.
- * Two dependent hashes with prefixes performed.
- */
- break;
- default:
- ret = HASH_TYPE_E;
- WOLFSSL_MSG("Hash for Signature has unsupported type");
- }
- return ret;
- }
- /* Return codes: 0=Success, Negative (see error-crypt.h), ASN_SIG_CONFIRM_E */
- static int ConfirmSignature(SignatureCtx* sigCtx,
- const byte* buf, word32 bufSz,
- const byte* key, word32 keySz, word32 keyOID,
- const byte* sig, word32 sigSz, word32 sigOID)
- {
- int ret = 0;
- if (sigCtx == NULL || buf == NULL || bufSz == 0 || key == NULL ||
- keySz == 0 || sig == NULL || sigSz == 0) {
- return BAD_FUNC_ARG;
- }
- (void)key;
- (void)keySz;
- (void)sig;
- (void)sigSz;
- WOLFSSL_ENTER("ConfirmSignature");
- switch (sigCtx->state) {
- case SIG_STATE_BEGIN:
- {
- sigCtx->digest = (byte*)XMALLOC(WC_MAX_DIGEST_SIZE, sigCtx->heap,
- DYNAMIC_TYPE_DIGEST);
- if (sigCtx->digest == NULL) {
- ERROR_OUT(MEMORY_E, exit_cs);
- }
- sigCtx->state = SIG_STATE_HASH;
- } /* SIG_STATE_BEGIN */
- FALL_THROUGH;
- case SIG_STATE_HASH:
- {
- ret = HashForSignature(buf, bufSz, sigOID, sigCtx->digest,
- &sigCtx->typeH, &sigCtx->digestSz, 1);
- if (ret != 0) {
- goto exit_cs;
- }
- sigCtx->state = SIG_STATE_KEY;
- } /* SIG_STATE_HASH */
- FALL_THROUGH;
- case SIG_STATE_KEY:
- {
- sigCtx->keyOID = keyOID;
- switch (keyOID) {
- #ifndef NO_RSA
- case RSAk:
- {
- word32 idx = 0;
- sigCtx->key.rsa = (RsaKey*)XMALLOC(sizeof(RsaKey),
- sigCtx->heap, DYNAMIC_TYPE_RSA);
- sigCtx->plain = (byte*)XMALLOC(MAX_ENCODED_SIG_SZ,
- sigCtx->heap, DYNAMIC_TYPE_SIGNATURE);
- if (sigCtx->key.rsa == NULL || sigCtx->plain == NULL) {
- ERROR_OUT(MEMORY_E, exit_cs);
- }
- if ((ret = wc_InitRsaKey_ex(sigCtx->key.rsa, sigCtx->heap,
- sigCtx->devId)) != 0) {
- goto exit_cs;
- }
- if (sigSz > MAX_ENCODED_SIG_SZ) {
- WOLFSSL_MSG("Verify Signature is too big");
- ERROR_OUT(BUFFER_E, exit_cs);
- }
- if ((ret = wc_RsaPublicKeyDecode(key, &idx, sigCtx->key.rsa,
- keySz)) != 0) {
- WOLFSSL_MSG("ASN Key decode error RSA");
- goto exit_cs;
- }
- XMEMCPY(sigCtx->plain, sig, sigSz);
- sigCtx->out = NULL;
- #ifdef WOLFSSL_ASYNC_CRYPT
- sigCtx->asyncDev = &sigCtx->key.rsa->asyncDev;
- #endif
- break;
- }
- #endif /* !NO_RSA */
- #ifdef HAVE_ECC
- case ECDSAk:
- {
- sigCtx->verify = 0;
- sigCtx->key.ecc = (ecc_key*)XMALLOC(sizeof(ecc_key),
- sigCtx->heap, DYNAMIC_TYPE_ECC);
- if (sigCtx->key.ecc == NULL) {
- ERROR_OUT(MEMORY_E, exit_cs);
- }
- if ((ret = wc_ecc_init_ex(sigCtx->key.ecc, sigCtx->heap,
- sigCtx->devId)) < 0) {
- goto exit_cs;
- }
- if ((ret = wc_ecc_import_x963(key, keySz,
- sigCtx->key.ecc)) < 0) {
- WOLFSSL_MSG("ASN Key import error ECC");
- goto exit_cs;
- }
- #ifdef WOLFSSL_ASYNC_CRYPT
- sigCtx->asyncDev = &sigCtx->key.ecc->asyncDev;
- #endif
- break;
- }
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case ED25519k:
- {
- sigCtx->verify = 0;
- sigCtx->key.ed25519 = (ed25519_key*)XMALLOC(
- sizeof(ed25519_key), sigCtx->heap,
- DYNAMIC_TYPE_ED25519);
- if (sigCtx->key.ed25519 == NULL) {
- ERROR_OUT(MEMORY_E, exit_cs);
- }
- if ((ret = wc_ed25519_init(sigCtx->key.ed25519)) < 0) {
- goto exit_cs;
- }
- if ((ret = wc_ed25519_import_public(key, keySz,
- sigCtx->key.ed25519)) < 0) {
- WOLFSSL_MSG("ASN Key import error ED25519");
- goto exit_cs;
- }
- #ifdef WOLFSSL_ASYNC_CRYPT
- sigCtx->asyncDev = &sigCtx->key.ed25519->asyncDev;
- #endif
- break;
- }
- #endif
- default:
- WOLFSSL_MSG("Verify Key type unknown");
- ret = ASN_UNKNOWN_OID_E;
- break;
- } /* switch (keyOID) */
- if (ret != 0) {
- goto exit_cs;
- }
- sigCtx->state = SIG_STATE_DO;
- #ifdef WOLFSSL_ASYNC_CRYPT
- if (sigCtx->devId != INVALID_DEVID && sigCtx->asyncDev && sigCtx->asyncCtx) {
- /* make sure event is intialized */
- WOLF_EVENT* event = &sigCtx->asyncDev->event;
- ret = wolfAsync_EventInit(event, WOLF_EVENT_TYPE_ASYNC_WOLFSSL,
- sigCtx->asyncCtx, WC_ASYNC_FLAG_CALL_AGAIN);
- }
- #endif
- } /* SIG_STATE_KEY */
- FALL_THROUGH;
- case SIG_STATE_DO:
- {
- switch (keyOID) {
- #ifndef NO_RSA
- case RSAk:
- {
- ret = wc_RsaSSL_VerifyInline(sigCtx->plain, sigSz,
- &sigCtx->out, sigCtx->key.rsa);
- break;
- }
- #endif /* !NO_RSA */
- #ifdef HAVE_ECC
- case ECDSAk:
- {
- ret = wc_ecc_verify_hash(sig, sigSz, sigCtx->digest,
- sigCtx->digestSz, &sigCtx->verify, sigCtx->key.ecc);
- break;
- }
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case ED25519k:
- {
- ret = wc_ed25519_verify_msg(sig, sigSz, buf, bufSz,
- &sigCtx->verify, sigCtx->key.ed25519);
- break;
- }
- #endif
- default:
- break;
- } /* switch (keyOID) */
- if (ret < 0) {
- /* treat all non async RSA errors as ASN_SIG_CONFIRM_E */
- if (ret != WC_PENDING_E)
- ret = ASN_SIG_CONFIRM_E;
- goto exit_cs;
- }
- sigCtx->state = SIG_STATE_CHECK;
- } /* SIG_STATE_DO */
- FALL_THROUGH;
- case SIG_STATE_CHECK:
- {
- switch (keyOID) {
- #ifndef NO_RSA
- case RSAk:
- {
- int encodedSigSz, verifySz;
- #ifdef WOLFSSL_SMALL_STACK
- byte* encodedSig = (byte*)XMALLOC(MAX_ENCODED_SIG_SZ,
- sigCtx->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (encodedSig == NULL) {
- ERROR_OUT(MEMORY_E, exit_cs);
- }
- #else
- byte encodedSig[MAX_ENCODED_SIG_SZ];
- #endif
- verifySz = ret;
- /* make sure we're right justified */
- encodedSigSz = wc_EncodeSignature(encodedSig,
- sigCtx->digest, sigCtx->digestSz, sigCtx->typeH);
- if (encodedSigSz == verifySz &&
- XMEMCMP(sigCtx->out, encodedSig, encodedSigSz) == 0) {
- ret = 0;
- }
- else {
- WOLFSSL_MSG("RSA SSL verify match encode error");
- ret = ASN_SIG_CONFIRM_E;
- }
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(encodedSig, sigCtx->heap, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- break;
- }
- #endif /* NO_RSA */
- #ifdef HAVE_ECC
- case ECDSAk:
- {
- if (sigCtx->verify == 1) {
- ret = 0;
- }
- else {
- WOLFSSL_MSG("ECC Verify didn't match");
- ret = ASN_SIG_CONFIRM_E;
- }
- break;
- }
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- case ED25519k:
- {
- if (sigCtx->verify == 1) {
- ret = 0;
- }
- else {
- WOLFSSL_MSG("ED25519 Verify didn't match");
- ret = ASN_SIG_CONFIRM_E;
- }
- break;
- }
- #endif /* HAVE_ED25519 */
- default:
- break;
- } /* switch (keyOID) */
- break;
- } /* SIG_STATE_CHECK */
- } /* switch (sigCtx->state) */
- exit_cs:
- WOLFSSL_LEAVE("ConfirmSignature", ret);
- if (ret != WC_PENDING_E) {
- FreeSignatureCtx(sigCtx);
- }
- return ret;
- }
- #ifndef IGNORE_NAME_CONSTRAINTS
- static int MatchBaseName(int type, const char* name, int nameSz,
- const char* base, int baseSz)
- {
- if (base == NULL || baseSz <= 0 || name == NULL || nameSz <= 0 ||
- name[0] == '.' || nameSz < baseSz ||
- (type != ASN_RFC822_TYPE && type != ASN_DNS_TYPE))
- return 0;
- /* If an email type, handle special cases where the base is only
- * a domain, or is an email address itself. */
- if (type == ASN_RFC822_TYPE) {
- const char* p = NULL;
- int count = 0;
- if (base[0] != '.') {
- p = base;
- count = 0;
- /* find the '@' in the base */
- while (*p != '@' && count < baseSz) {
- count++;
- p++;
- }
- /* No '@' in base, reset p to NULL */
- if (count >= baseSz)
- p = NULL;
- }
- if (p == NULL) {
- /* Base isn't an email address, it is a domain name,
- * wind the name forward one character past its '@'. */
- p = name;
- count = 0;
- while (*p != '@' && count < baseSz) {
- count++;
- p++;
- }
- if (count < baseSz && *p == '@') {
- name = p + 1;
- nameSz -= count + 1;
- }
- }
- }
- if ((type == ASN_DNS_TYPE || type == ASN_RFC822_TYPE) && base[0] == '.') {
- int szAdjust = nameSz - baseSz;
- name += szAdjust;
- nameSz -= szAdjust;
- }
- while (nameSz > 0) {
- if (XTOLOWER((unsigned char)*name++) !=
- XTOLOWER((unsigned char)*base++))
- return 0;
- nameSz--;
- }
- return 1;
- }
- static int ConfirmNameConstraints(Signer* signer, DecodedCert* cert)
- {
- if (signer == NULL || cert == NULL)
- return 0;
- /* Check against the excluded list */
- if (signer->excludedNames) {
- Base_entry* base = signer->excludedNames;
- while (base != NULL) {
- switch (base->type) {
- case ASN_DNS_TYPE:
- {
- DNS_entry* name = cert->altNames;
- while (name != NULL) {
- if (MatchBaseName(ASN_DNS_TYPE,
- name->name, (int)XSTRLEN(name->name),
- base->name, base->nameSz)) {
- return 0;
- }
- name = name->next;
- }
- break;
- }
- case ASN_RFC822_TYPE:
- {
- DNS_entry* name = cert->altEmailNames;
- while (name != NULL) {
- if (MatchBaseName(ASN_RFC822_TYPE,
- name->name, (int)XSTRLEN(name->name),
- base->name, base->nameSz)) {
- return 0;
- }
- name = name->next;
- }
- break;
- }
- case ASN_DIR_TYPE:
- {
- /* allow permitted dirName smaller than actual subject */
- if (cert->subjectRawLen >= base->nameSz &&
- XMEMCMP(cert->subjectRaw, base->name,
- base->nameSz) == 0) {
- return 0;
- }
- break;
- }
- }; /* switch */
- base = base->next;
- }
- }
- /* Check against the permitted list */
- if (signer->permittedNames != NULL) {
- int needDns = 0;
- int matchDns = 0;
- int needEmail = 0;
- int matchEmail = 0;
- int needDir = 0;
- int matchDir = 0;
- Base_entry* base = signer->permittedNames;
- while (base != NULL) {
- switch (base->type) {
- case ASN_DNS_TYPE:
- {
- DNS_entry* name = cert->altNames;
- if (name != NULL)
- needDns = 1;
- while (name != NULL) {
- matchDns = MatchBaseName(ASN_DNS_TYPE,
- name->name, (int)XSTRLEN(name->name),
- base->name, base->nameSz);
- name = name->next;
- }
- break;
- }
- case ASN_RFC822_TYPE:
- {
- DNS_entry* name = cert->altEmailNames;
- if (name != NULL)
- needEmail = 1;
- while (name != NULL) {
- matchEmail = MatchBaseName(ASN_DNS_TYPE,
- name->name, (int)XSTRLEN(name->name),
- base->name, base->nameSz);
- name = name->next;
- }
- break;
- }
- case ASN_DIR_TYPE:
- {
- /* allow permitted dirName smaller than actual subject */
- needDir = 1;
- if (cert->subjectRaw != NULL &&
- cert->subjectRawLen >= base->nameSz &&
- XMEMCMP(cert->subjectRaw, base->name,
- base->nameSz) == 0) {
- matchDir = 1;
- }
- break;
- }
- } /* switch */
- base = base->next;
- }
- if ((needDns && !matchDns) ||
- (needEmail && !matchEmail) ||
- (needDir && !matchDir)) {
- return 0;
- }
- }
- return 1;
- }
- #endif /* IGNORE_NAME_CONSTRAINTS */
- static int DecodeAltNames(byte* input, int sz, DecodedCert* cert)
- {
- word32 idx = 0;
- int length = 0;
- WOLFSSL_ENTER("DecodeAltNames");
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tBad Sequence");
- return ASN_PARSE_E;
- }
- cert->weOwnAltNames = 1;
- while (length > 0) {
- byte b = input[idx++];
- length--;
- /* Save DNS Type names in the altNames list. */
- /* Save Other Type names in the cert's OidMap */
- if (b == (ASN_CONTEXT_SPECIFIC | ASN_DNS_TYPE)) {
- DNS_entry* dnsEntry;
- int strLen;
- word32 lenStartIdx = idx;
- if (GetLength(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tfail: str length");
- return ASN_PARSE_E;
- }
- length -= (idx - lenStartIdx);
- dnsEntry = (DNS_entry*)XMALLOC(sizeof(DNS_entry), cert->heap,
- DYNAMIC_TYPE_ALTNAME);
- if (dnsEntry == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- return MEMORY_E;
- }
- dnsEntry->type = ASN_DNS_TYPE;
- dnsEntry->name = (char*)XMALLOC(strLen + 1, cert->heap,
- DYNAMIC_TYPE_ALTNAME);
- if (dnsEntry->name == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- XFREE(dnsEntry, cert->heap, DYNAMIC_TYPE_ALTNAME);
- return MEMORY_E;
- }
- XMEMCPY(dnsEntry->name, &input[idx], strLen);
- dnsEntry->name[strLen] = '\0';
- dnsEntry->next = cert->altNames;
- cert->altNames = dnsEntry;
- length -= strLen;
- idx += strLen;
- }
- #ifndef IGNORE_NAME_CONSTRAINTS
- else if (b == (ASN_CONTEXT_SPECIFIC | ASN_RFC822_TYPE)) {
- DNS_entry* emailEntry;
- int strLen;
- word32 lenStartIdx = idx;
- if (GetLength(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tfail: str length");
- return ASN_PARSE_E;
- }
- length -= (idx - lenStartIdx);
- emailEntry = (DNS_entry*)XMALLOC(sizeof(DNS_entry), cert->heap,
- DYNAMIC_TYPE_ALTNAME);
- if (emailEntry == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- return MEMORY_E;
- }
- emailEntry->type = ASN_RFC822_TYPE;
- emailEntry->name = (char*)XMALLOC(strLen + 1, cert->heap,
- DYNAMIC_TYPE_ALTNAME);
- if (emailEntry->name == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- XFREE(emailEntry, cert->heap, DYNAMIC_TYPE_ALTNAME);
- return MEMORY_E;
- }
- XMEMCPY(emailEntry->name, &input[idx], strLen);
- emailEntry->name[strLen] = '\0';
- emailEntry->next = cert->altEmailNames;
- cert->altEmailNames = emailEntry;
- length -= strLen;
- idx += strLen;
- }
- else if (b == (ASN_CONTEXT_SPECIFIC | ASN_URI_TYPE)) {
- DNS_entry* uriEntry;
- int strLen;
- word32 lenStartIdx = idx;
- WOLFSSL_MSG("\tPutting URI into list but not using");
- if (GetLength(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tfail: str length");
- return ASN_PARSE_E;
- }
- length -= (idx - lenStartIdx);
- uriEntry = (DNS_entry*)XMALLOC(sizeof(DNS_entry), cert->heap,
- DYNAMIC_TYPE_ALTNAME);
- if (uriEntry == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- return MEMORY_E;
- }
- uriEntry->type = ASN_URI_TYPE;
- uriEntry->name = (char*)XMALLOC(strLen + 1, cert->heap,
- DYNAMIC_TYPE_ALTNAME);
- if (uriEntry->name == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- XFREE(uriEntry, cert->heap, DYNAMIC_TYPE_ALTNAME);
- return MEMORY_E;
- }
- XMEMCPY(uriEntry->name, &input[idx], strLen);
- uriEntry->name[strLen] = '\0';
- uriEntry->next = cert->altNames;
- cert->altNames = uriEntry;
- length -= strLen;
- idx += strLen;
- }
- #endif /* IGNORE_NAME_CONSTRAINTS */
- #ifdef WOLFSSL_SEP
- else if (b == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | ASN_OTHER_TYPE))
- {
- int strLen;
- word32 lenStartIdx = idx;
- word32 oid = 0;
- int ret;
- if (GetLength(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tfail: other name length");
- return ASN_PARSE_E;
- }
- /* Consume the rest of this sequence. */
- length -= (strLen + idx - lenStartIdx);
- if (GetObjectId(input, &idx, &oid, oidCertAltNameType, sz) < 0) {
- WOLFSSL_MSG("\tbad OID");
- return ASN_PARSE_E;
- }
- if (oid != HW_NAME_OID) {
- WOLFSSL_MSG("\tincorrect OID");
- return ASN_PARSE_E;
- }
- if (input[idx++] != (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED)) {
- WOLFSSL_MSG("\twrong type");
- return ASN_PARSE_E;
- }
- if (GetLength(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tfail: str len");
- return ASN_PARSE_E;
- }
- if (GetSequence(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tBad Sequence");
- return ASN_PARSE_E;
- }
- ret = GetASNObjectId(input, &idx, &strLen, sz);
- if (ret != 0) {
- WOLFSSL_MSG("\tbad OID");
- return ret;
- }
- cert->hwType = (byte*)XMALLOC(strLen, cert->heap,
- DYNAMIC_TYPE_X509_EXT);
- if (cert->hwType == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- return MEMORY_E;
- }
- XMEMCPY(cert->hwType, &input[idx], strLen);
- cert->hwTypeSz = strLen;
- idx += strLen;
- ret = GetOctetString(input, &idx, &strLen, sz);
- if (ret < 0)
- return ret;
- cert->hwSerialNum = (byte*)XMALLOC(strLen + 1, cert->heap,
- DYNAMIC_TYPE_X509_EXT);
- if (cert->hwSerialNum == NULL) {
- WOLFSSL_MSG("\tOut of Memory");
- return MEMORY_E;
- }
- XMEMCPY(cert->hwSerialNum, &input[idx], strLen);
- cert->hwSerialNum[strLen] = '\0';
- cert->hwSerialNumSz = strLen;
- idx += strLen;
- }
- #endif /* WOLFSSL_SEP */
- else {
- int strLen;
- word32 lenStartIdx = idx;
- WOLFSSL_MSG("\tUnsupported name type, skipping");
- if (GetLength(input, &idx, &strLen, sz) < 0) {
- WOLFSSL_MSG("\tfail: unsupported name length");
- return ASN_PARSE_E;
- }
- length -= (strLen + idx - lenStartIdx);
- idx += strLen;
- }
- }
- return 0;
- }
- static int DecodeBasicCaConstraint(byte* input, int sz, DecodedCert* cert)
- {
- word32 idx = 0;
- int length = 0;
- int ret;
- WOLFSSL_ENTER("DecodeBasicCaConstraint");
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: bad SEQUENCE");
- return ASN_PARSE_E;
- }
- if (length == 0)
- return 0;
- /* If the basic ca constraint is false, this extension may be named, but
- * left empty. So, if the length is 0, just return. */
- ret = GetBoolean(input, &idx, sz);
- if (ret < 0) {
- WOLFSSL_MSG("\tfail: constraint not valid BOOLEAN");
- return ret;
- }
- cert->isCA = (byte)ret;
- /* If there isn't any more data, return. */
- if (idx >= (word32)sz)
- return 0;
- ret = GetInteger7Bit(input, &idx, sz);
- if (ret < 0)
- return ret;
- cert->pathLength = (byte)ret;
- cert->pathLengthSet = 1;
- return 0;
- }
- #define CRLDP_FULL_NAME 0
- /* From RFC3280 SS4.2.1.14, Distribution Point Name*/
- #define GENERALNAME_URI 6
- /* From RFC3280 SS4.2.1.7, GeneralName */
- static int DecodeCrlDist(byte* input, int sz, DecodedCert* cert)
- {
- word32 idx = 0;
- int length = 0;
- WOLFSSL_ENTER("DecodeCrlDist");
- /* Unwrap the list of Distribution Points*/
- if (GetSequence(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- /* Unwrap a single Distribution Point */
- if (GetSequence(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- /* The Distribution Point has three explicit optional members
- * First check for a DistributionPointName
- */
- if (input[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 0))
- {
- idx++;
- if (GetLength(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- if (input[idx] ==
- (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | CRLDP_FULL_NAME))
- {
- idx++;
- if (GetLength(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- if (input[idx] == (ASN_CONTEXT_SPECIFIC | GENERALNAME_URI))
- {
- idx++;
- if (GetLength(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- cert->extCrlInfoSz = length;
- cert->extCrlInfo = input + idx;
- idx += length;
- }
- else
- /* This isn't a URI, skip it. */
- idx += length;
- }
- else {
- /* This isn't a FULLNAME, skip it. */
- idx += length;
- }
- }
- /* Check for reasonFlags */
- if (idx < (word32)sz &&
- input[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 1))
- {
- idx++;
- if (GetLength(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- idx += length;
- }
- /* Check for cRLIssuer */
- if (idx < (word32)sz &&
- input[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 2))
- {
- idx++;
- if (GetLength(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- idx += length;
- }
- if (idx < (word32)sz)
- {
- WOLFSSL_MSG("\tThere are more CRL Distribution Point records, "
- "but we only use the first one.");
- }
- return 0;
- }
- static int DecodeAuthInfo(byte* input, int sz, DecodedCert* cert)
- /*
- * Read the first of the Authority Information Access records. If there are
- * any issues, return without saving the record.
- */
- {
- word32 idx = 0;
- int length = 0;
- byte b;
- word32 oid;
- WOLFSSL_ENTER("DecodeAuthInfo");
- /* Unwrap the list of AIAs */
- if (GetSequence(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- while (idx < (word32)sz) {
- /* Unwrap a single AIA */
- if (GetSequence(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- oid = 0;
- if (GetObjectId(input, &idx, &oid, oidCertAuthInfoType, sz) < 0)
- return ASN_PARSE_E;
- /* Only supporting URIs right now. */
- b = input[idx++];
- if (GetLength(input, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- if (b == (ASN_CONTEXT_SPECIFIC | GENERALNAME_URI) &&
- oid == AIA_OCSP_OID)
- {
- cert->extAuthInfoSz = length;
- cert->extAuthInfo = input + idx;
- break;
- }
- idx += length;
- }
- return 0;
- }
- static int DecodeAuthKeyId(byte* input, int sz, DecodedCert* cert)
- {
- word32 idx = 0;
- int length = 0, ret = 0;
- WOLFSSL_ENTER("DecodeAuthKeyId");
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE\n");
- return ASN_PARSE_E;
- }
- if (input[idx++] != (ASN_CONTEXT_SPECIFIC | 0)) {
- WOLFSSL_MSG("\tinfo: OPTIONAL item 0, not available\n");
- return 0;
- }
- if (GetLength(input, &idx, &length, sz) <= 0) {
- WOLFSSL_MSG("\tfail: extension data length");
- return ASN_PARSE_E;
- }
- #ifdef OPENSSL_EXTRA
- cert->extAuthKeyIdSrc = &input[idx];
- cert->extAuthKeyIdSz = length;
- #endif /* OPENSSL_EXTRA */
- if (length == KEYID_SIZE) {
- XMEMCPY(cert->extAuthKeyId, input + idx, length);
- }
- else {
- #ifdef NO_SHA
- ret = wc_Sha256Hash(input + idx, length, cert->extAuthKeyId);
- #else
- ret = wc_ShaHash(input + idx, length, cert->extAuthKeyId);
- #endif
- }
- return ret;
- }
- static int DecodeSubjKeyId(byte* input, int sz, DecodedCert* cert)
- {
- word32 idx = 0;
- int length = 0, ret = 0;
- WOLFSSL_ENTER("DecodeSubjKeyId");
- if (sz <= 0)
- return ASN_PARSE_E;
- ret = GetOctetString(input, &idx, &length, sz);
- if (ret < 0)
- return ret;
- #ifdef OPENSSL_EXTRA
- cert->extSubjKeyIdSrc = &input[idx];
- cert->extSubjKeyIdSz = length;
- #endif /* OPENSSL_EXTRA */
- if (length == SIGNER_DIGEST_SIZE) {
- XMEMCPY(cert->extSubjKeyId, input + idx, length);
- }
- else {
- #ifdef NO_SHA
- ret = wc_Sha256Hash(input + idx, length, cert->extSubjKeyId);
- #else
- ret = wc_ShaHash(input + idx, length, cert->extSubjKeyId);
- #endif
- }
- return ret;
- }
- static int DecodeKeyUsage(byte* input, int sz, DecodedCert* cert)
- {
- word32 idx = 0;
- int length;
- int ret;
- WOLFSSL_ENTER("DecodeKeyUsage");
- ret = CheckBitString(input, &idx, &length, sz, 0, NULL);
- if (ret != 0)
- return ret;
- cert->extKeyUsage = (word16)(input[idx]);
- if (length == 2)
- cert->extKeyUsage |= (word16)(input[idx+1] << 8);
- return 0;
- }
- static int DecodeExtKeyUsage(byte* input, int sz, DecodedCert* cert)
- {
- word32 idx = 0, oid;
- int length;
- WOLFSSL_ENTER("DecodeExtKeyUsage");
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE");
- return ASN_PARSE_E;
- }
- #ifdef OPENSSL_EXTRA
- cert->extExtKeyUsageSrc = input + idx;
- cert->extExtKeyUsageSz = length;
- #endif
- while (idx < (word32)sz) {
- if (GetObjectId(input, &idx, &oid, oidCertKeyUseType, sz) < 0)
- return ASN_PARSE_E;
- switch (oid) {
- case EKU_ANY_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_ANY;
- break;
- case EKU_SERVER_AUTH_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_SERVER_AUTH;
- break;
- case EKU_CLIENT_AUTH_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_CLIENT_AUTH;
- break;
- case EKU_CODESIGNING_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_CODESIGN;
- break;
- case EKU_EMAILPROTECT_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_EMAILPROT;
- break;
- case EKU_TIMESTAMP_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_TIMESTAMP;
- break;
- case EKU_OCSP_SIGN_OID:
- cert->extExtKeyUsage |= EXTKEYUSE_OCSP_SIGN;
- break;
- }
- #ifdef OPENSSL_EXTRA
- cert->extExtKeyUsageCount++;
- #endif
- }
- return 0;
- }
- #ifndef IGNORE_NAME_CONSTRAINTS
- #define ASN_TYPE_MASK 0xF
- static int DecodeSubtree(byte* input, int sz, Base_entry** head, void* heap)
- {
- word32 idx = 0;
- (void)heap;
- while (idx < (word32)sz) {
- int seqLength, strLength;
- word32 nameIdx;
- byte b, bType;
- if (GetSequence(input, &idx, &seqLength, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE");
- return ASN_PARSE_E;
- }
- nameIdx = idx;
- b = input[nameIdx++];
- if (GetLength(input, &nameIdx, &strLength, sz) <= 0) {
- WOLFSSL_MSG("\tinvalid length");
- return ASN_PARSE_E;
- }
- /* Get type, LSB 4-bits */
- bType = (b & ASN_TYPE_MASK);
- if (bType == ASN_DNS_TYPE || bType == ASN_RFC822_TYPE ||
- bType == ASN_DIR_TYPE) {
- Base_entry* entry;
- /* if constructed has leading sequence */
- if (b & ASN_CONSTRUCTED) {
- if (GetSequence(input, &nameIdx, &strLength, sz) < 0) {
- WOLFSSL_MSG("\tfail: constructed be a SEQUENCE");
- return ASN_PARSE_E;
- }
- }
- entry = (Base_entry*)XMALLOC(sizeof(Base_entry), heap,
- DYNAMIC_TYPE_ALTNAME);
- if (entry == NULL) {
- WOLFSSL_MSG("allocate error");
- return MEMORY_E;
- }
- entry->name = (char*)XMALLOC(strLength, heap, DYNAMIC_TYPE_ALTNAME);
- if (entry->name == NULL) {
- WOLFSSL_MSG("allocate error");
- XFREE(entry, heap, DYNAMIC_TYPE_ALTNAME);
- return MEMORY_E;
- }
- XMEMCPY(entry->name, &input[nameIdx], strLength);
- entry->nameSz = strLength;
- entry->type = bType;
- entry->next = *head;
- *head = entry;
- }
- idx += seqLength;
- }
- return 0;
- }
- static int DecodeNameConstraints(byte* input, int sz, DecodedCert* cert)
- {
- word32 idx = 0;
- int length = 0;
- WOLFSSL_ENTER("DecodeNameConstraints");
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE");
- return ASN_PARSE_E;
- }
- while (idx < (word32)sz) {
- byte b = input[idx++];
- Base_entry** subtree = NULL;
- if (GetLength(input, &idx, &length, sz) <= 0) {
- WOLFSSL_MSG("\tinvalid length");
- return ASN_PARSE_E;
- }
- if (b == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 0))
- subtree = &cert->permittedNames;
- else if (b == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 1))
- subtree = &cert->excludedNames;
- else {
- WOLFSSL_MSG("\tinvalid subtree");
- return ASN_PARSE_E;
- }
- DecodeSubtree(input + idx, length, subtree, cert->heap);
- idx += length;
- }
- return 0;
- }
- #endif /* IGNORE_NAME_CONSTRAINTS */
- #if (defined(WOLFSSL_CERT_EXT) && !defined(WOLFSSL_SEP)) || defined(OPENSSL_EXTRA)
- static int Word32ToString(char* d, word32 number)
- {
- int i = 0;
- if (d != NULL) {
- word32 order = 1000000000;
- word32 digit;
- if (number == 0) {
- d[i++] = '0';
- }
- else {
- while (order) {
- digit = number / order;
- if (i > 0 || digit != 0) {
- d[i++] = (char)digit + '0';
- }
- if (digit != 0)
- number %= digit * order;
- if (order > 1)
- order /= 10;
- else
- order = 0;
- }
- }
- d[i] = 0;
- }
- return i;
- }
- /* Decode ITU-T X.690 OID format to a string representation
- * return string length */
- int DecodePolicyOID(char *out, word32 outSz, byte *in, word32 inSz)
- {
- word32 val, idx = 0, nb_bytes;
- size_t w_bytes = 0;
- if (out == NULL || in == NULL || outSz < 4 || inSz < 2)
- return BAD_FUNC_ARG;
- /* first two byte must be interpreted as : 40 * int1 + int2 */
- val = (word16)in[idx++];
- w_bytes = Word32ToString(out, val / 40);
- out[w_bytes++] = '.';
- w_bytes += Word32ToString(out+w_bytes, val % 40);
- while (idx < inSz) {
- /* init value */
- val = 0;
- nb_bytes = 0;
- /* check that output size is ok */
- if (w_bytes > (outSz - 3))
- return BUFFER_E;
- /* first bit is used to set if value is coded on 1 or multiple bytes */
- while ((in[idx+nb_bytes] & 0x80))
- nb_bytes++;
- if (!nb_bytes)
- val = (word32)(in[idx++] & 0x7f);
- else {
- word32 base = 1, tmp = nb_bytes;
- while (tmp != 0) {
- val += (word32)(in[idx+tmp] & 0x7f) * base;
- base *= 128;
- tmp--;
- }
- val += (word32)(in[idx++] & 0x7f) * base;
- idx += nb_bytes;
- }
- out[w_bytes++] = '.';
- w_bytes += Word32ToString(out+w_bytes, val);
- }
- return (int)w_bytes;
- }
- #endif /* WOLFSSL_CERT_EXT && !WOLFSSL_SEP */
- #if defined(WOLFSSL_SEP) || defined(WOLFSSL_CERT_EXT)
- /* Reference: https://tools.ietf.org/html/rfc5280#section-4.2.1.4 */
- static int DecodeCertPolicy(byte* input, int sz, DecodedCert* cert)
- {
- word32 idx = 0;
- word32 oldIdx;
- int ret;
- int total_length = 0, policy_length = 0, length = 0;
- #if !defined(WOLFSSL_SEP) && defined(WOLFSSL_CERT_EXT) && \
- !defined(WOLFSSL_DUP_CERTPOL)
- int i;
- #endif
- WOLFSSL_ENTER("DecodeCertPolicy");
- if (GetSequence(input, &idx, &total_length, sz) < 0) {
- WOLFSSL_MSG("\tGet CertPolicy total seq failed");
- return ASN_PARSE_E;
- }
- /* Validate total length */
- if (total_length > (sz - (int)idx)) {
- WOLFSSL_MSG("\tCertPolicy length mismatch");
- return ASN_PARSE_E;
- }
- /* Unwrap certificatePolicies */
- do {
- if (GetSequence(input, &idx, &policy_length, sz) < 0) {
- WOLFSSL_MSG("\tGet CertPolicy seq failed");
- return ASN_PARSE_E;
- }
- oldIdx = idx;
- ret = GetASNObjectId(input, &idx, &length, sz);
- if (ret != 0)
- return ret;
- policy_length -= idx - oldIdx;
- if (length > 0) {
- /* Verify length won't overrun buffer */
- if (length > (sz - (int)idx)) {
- WOLFSSL_MSG("\tCertPolicy length exceeds input buffer");
- return ASN_PARSE_E;
- }
- #if defined(WOLFSSL_SEP)
- cert->deviceType = (byte*)XMALLOC(length, cert->heap,
- DYNAMIC_TYPE_X509_EXT);
- if (cert->deviceType == NULL) {
- WOLFSSL_MSG("\tCouldn't alloc memory for deviceType");
- return MEMORY_E;
- }
- cert->deviceTypeSz = length;
- XMEMCPY(cert->deviceType, input + idx, length);
- break;
- #elif defined(WOLFSSL_CERT_EXT)
- /* decode cert policy */
- if (DecodePolicyOID(cert->extCertPolicies[cert->extCertPoliciesNb], MAX_CERTPOL_SZ,
- input + idx, length) <= 0) {
- WOLFSSL_MSG("\tCouldn't decode CertPolicy");
- return ASN_PARSE_E;
- }
- #ifndef WOLFSSL_DUP_CERTPOL
- /* From RFC 5280 section 4.2.1.3 "A certificate policy OID MUST
- * NOT appear more than once in a certificate policies
- * extension". This is a sanity check for duplicates.
- * extCertPolicies should only have OID values, additional
- * qualifiers need to be stored in a seperate array. */
- for (i = 0; i < cert->extCertPoliciesNb; i++) {
- if (XMEMCMP(cert->extCertPolicies[i],
- cert->extCertPolicies[cert->extCertPoliciesNb],
- MAX_CERTPOL_SZ) == 0) {
- WOLFSSL_MSG("Duplicate policy OIDs not allowed");
- WOLFSSL_MSG("Use WOLFSSL_DUP_CERTPOL if wanted");
- return CERTPOLICIES_E;
- }
- }
- #endif /* !WOLFSSL_DUP_CERTPOL */
- cert->extCertPoliciesNb++;
- #else
- WOLFSSL_LEAVE("DecodeCertPolicy : unsupported mode", 0);
- return 0;
- #endif
- }
- idx += policy_length;
- } while((int)idx < total_length
- #if defined(WOLFSSL_CERT_EXT)
- && cert->extCertPoliciesNb < MAX_CERTPOL_NB
- #endif
- );
- WOLFSSL_LEAVE("DecodeCertPolicy", 0);
- return 0;
- }
- #endif /* WOLFSSL_SEP */
- static int DecodeCertExtensions(DecodedCert* cert)
- /*
- * Processing the Certificate Extensions. This does not modify the current
- * index. It is works starting with the recorded extensions pointer.
- */
- {
- int ret;
- word32 idx = 0;
- int sz = cert->extensionsSz;
- byte* input = cert->extensions;
- int length;
- word32 oid;
- byte critical = 0;
- byte criticalFail = 0;
- WOLFSSL_ENTER("DecodeCertExtensions");
- if (input == NULL || sz == 0)
- return BAD_FUNC_ARG;
- if (input[idx++] != ASN_EXTENSIONS) {
- WOLFSSL_MSG("\tfail: should be an EXTENSIONS");
- return ASN_PARSE_E;
- }
- if (GetLength(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: invalid length");
- return ASN_PARSE_E;
- }
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE (1)");
- return ASN_PARSE_E;
- }
- while (idx < (word32)sz) {
- if (GetSequence(input, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE");
- return ASN_PARSE_E;
- }
- oid = 0;
- if ((ret = GetObjectId(input, &idx, &oid, oidCertExtType, sz)) < 0) {
- WOLFSSL_MSG("\tfail: OBJECT ID");
- return ret;
- }
- /* check for critical flag */
- critical = 0;
- if (input[idx] == ASN_BOOLEAN) {
- ret = GetBoolean(input, &idx, sz);
- if (ret < 0) {
- WOLFSSL_MSG("\tfail: critical boolean");
- return ret;
- }
- critical = (byte)ret;
- }
- /* process the extension based on the OID */
- ret = GetOctetString(input, &idx, &length, sz);
- if (ret < 0) {
- WOLFSSL_MSG("\tfail: bad OCTET STRING");
- return ret;
- }
- switch (oid) {
- case BASIC_CA_OID:
- #ifdef OPENSSL_EXTRA
- cert->extBasicConstSet = 1;
- cert->extBasicConstCrit = critical;
- #endif
- if (DecodeBasicCaConstraint(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
- case CRL_DIST_OID:
- #ifdef OPENSSL_EXTRA
- cert->extCRLdistSet = 1;
- cert->extCRLdistCrit = critical;
- #endif
- if (DecodeCrlDist(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
- case AUTH_INFO_OID:
- #ifdef OPENSSL_EXTRA
- cert->extAuthInfoSet = 1;
- cert->extAuthInfoCrit = critical;
- #endif
- if (DecodeAuthInfo(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
- case ALT_NAMES_OID:
- #ifdef OPENSSL_EXTRA
- cert->extSubjAltNameSet = 1;
- cert->extSubjAltNameCrit = critical;
- #endif
- if (DecodeAltNames(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
- case AUTH_KEY_OID:
- cert->extAuthKeyIdSet = 1;
- #ifdef OPENSSL_EXTRA
- cert->extAuthKeyIdCrit = critical;
- #endif
- if (DecodeAuthKeyId(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
- case SUBJ_KEY_OID:
- cert->extSubjKeyIdSet = 1;
- #ifdef OPENSSL_EXTRA
- cert->extSubjKeyIdCrit = critical;
- #endif
- #ifndef WOLFSSL_ALLOW_CRIT_SKID
- /* This check is added due to RFC 5280 section 4.2.1.2
- * stating that conforming CA's must mark this extension
- * as non-critical. When parsing extensions check that
- * certificate was made in compliance with this. */
- if (critical) {
- WOLFSSL_MSG("Critical Subject Key ID is not allowed");
- WOLFSSL_MSG("Use macro WOLFSSL_ALLOW_CRIT_SKID if wanted");
- return ASN_CRIT_EXT_E;
- }
- #endif
- if (DecodeSubjKeyId(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
- case CERT_POLICY_OID:
- #ifdef WOLFSSL_SEP
- #ifdef OPENSSL_EXTRA
- cert->extCertPolicySet = 1;
- cert->extCertPolicyCrit = critical;
- #endif
- #endif
- #if defined(WOLFSSL_SEP) || defined(WOLFSSL_CERT_EXT)
- if (DecodeCertPolicy(&input[idx], length, cert) < 0) {
- return ASN_PARSE_E;
- }
- #else
- WOLFSSL_MSG("Certificate Policy extension not supported yet.");
- #endif
- break;
- case KEY_USAGE_OID:
- cert->extKeyUsageSet = 1;
- #ifdef OPENSSL_EXTRA
- cert->extKeyUsageCrit = critical;
- #endif
- if (DecodeKeyUsage(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
- case EXT_KEY_USAGE_OID:
- cert->extExtKeyUsageSet = 1;
- #ifdef OPENSSL_EXTRA
- cert->extExtKeyUsageCrit = critical;
- #endif
- if (DecodeExtKeyUsage(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
- #ifndef IGNORE_NAME_CONSTRAINTS
- case NAME_CONS_OID:
- cert->extNameConstraintSet = 1;
- #ifdef OPENSSL_EXTRA
- cert->extNameConstraintCrit = critical;
- #endif
- if (DecodeNameConstraints(&input[idx], length, cert) < 0)
- return ASN_PARSE_E;
- break;
- #endif /* IGNORE_NAME_CONSTRAINTS */
- case INHIBIT_ANY_OID:
- WOLFSSL_MSG("Inhibit anyPolicy extension not supported yet.");
- break;
- default:
- /* While it is a failure to not support critical extensions,
- * still parse the certificate ignoring the unsupported
- * extension to allow caller to accept it with the verify
- * callback. */
- if (critical)
- criticalFail = 1;
- break;
- }
- idx += length;
- }
- return criticalFail ? ASN_CRIT_EXT_E : 0;
- }
- int ParseCert(DecodedCert* cert, int type, int verify, void* cm)
- {
- int ret;
- char* ptr;
- ret = ParseCertRelative(cert, type, verify, cm);
- if (ret < 0)
- return ret;
- if (cert->subjectCNLen > 0) {
- ptr = (char*) XMALLOC(cert->subjectCNLen + 1, cert->heap,
- DYNAMIC_TYPE_SUBJECT_CN);
- if (ptr == NULL)
- return MEMORY_E;
- XMEMCPY(ptr, cert->subjectCN, cert->subjectCNLen);
- ptr[cert->subjectCNLen] = '\0';
- cert->subjectCN = ptr;
- cert->subjectCNStored = 1;
- }
- if (cert->keyOID == RSAk &&
- cert->publicKey != NULL && cert->pubKeySize > 0) {
- ptr = (char*) XMALLOC(cert->pubKeySize, cert->heap,
- DYNAMIC_TYPE_PUBLIC_KEY);
- if (ptr == NULL)
- return MEMORY_E;
- XMEMCPY(ptr, cert->publicKey, cert->pubKeySize);
- cert->publicKey = (byte *)ptr;
- cert->pubKeyStored = 1;
- }
- return ret;
- }
- /* from SSL proper, for locking can't do find here anymore */
- #ifdef __cplusplus
- extern "C" {
- #endif
- WOLFSSL_LOCAL Signer* GetCA(void* signers, byte* hash);
- #ifndef NO_SKID
- WOLFSSL_LOCAL Signer* GetCAByName(void* signers, byte* hash);
- #endif
- #ifdef __cplusplus
- }
- #endif
- #if defined(WOLFCRYPT_ONLY) || defined(NO_CERTS)
- /* dummy functions, not using wolfSSL so don't need actual ones */
- Signer* GetCA(void* signers, byte* hash)
- {
- (void)hash;
- return (Signer*)signers;
- }
- #ifndef NO_SKID
- Signer* GetCAByName(void* signers, byte* hash)
- {
- (void)hash;
- return (Signer*)signers;
- }
- #endif /* NO_SKID */
- #endif /* WOLFCRYPT_ONLY || NO_CERTS */
- #if (defined(WOLFSSL_ALT_CERT_CHAINS) || \
- defined(WOLFSSL_NO_TRUSTED_CERTS_VERIFY)) && !defined(NO_SKID)
- static Signer* GetCABySubjectAndPubKey(DecodedCert* cert, void* cm)
- {
- Signer* ca = NULL;
- if (cert->extSubjKeyIdSet)
- ca = GetCA(cm, cert->extSubjKeyId);
- if (ca == NULL)
- ca = GetCAByName(cm, cert->subjectHash);
- if (ca) {
- if ((ca->pubKeySize == cert->pubKeySize) &&
- (XMEMCMP(ca->publicKey, cert->publicKey, ca->pubKeySize) == 0)) {
- return ca;
- }
- }
- return NULL;
- }
- #endif
- int ParseCertRelative(DecodedCert* cert, int type, int verify, void* cm)
- {
- int ret = 0;
- int badDate = 0;
- int criticalExt = 0;
- word32 confirmOID;
- if (cert == NULL) {
- return BAD_FUNC_ARG;
- }
- if (cert->sigCtx.state == SIG_STATE_BEGIN) {
- if ((ret = DecodeToKey(cert, verify)) < 0) {
- if (ret == ASN_BEFORE_DATE_E || ret == ASN_AFTER_DATE_E)
- badDate = ret;
- else
- return ret;
- }
- WOLFSSL_MSG("Parsed Past Key");
- if (cert->srcIdx < cert->sigIndex) {
- #ifndef ALLOW_V1_EXTENSIONS
- if (cert->version < 2) {
- WOLFSSL_MSG("\tv1 and v2 certs not allowed extensions");
- return ASN_VERSION_E;
- }
- #endif
- /* save extensions */
- cert->extensions = &cert->source[cert->srcIdx];
- cert->extensionsSz = cert->sigIndex - cert->srcIdx;
- cert->extensionsIdx = cert->srcIdx; /* for potential later use */
- if ((ret = DecodeCertExtensions(cert)) < 0) {
- if (ret == ASN_CRIT_EXT_E)
- criticalExt = ret;
- else
- return ret;
- }
- /* advance past extensions */
- cert->srcIdx = cert->sigIndex;
- }
- if ((ret = GetAlgoId(cert->source, &cert->srcIdx, &confirmOID,
- oidSigType, cert->maxIdx)) < 0)
- return ret;
- if ((ret = GetSignature(cert)) < 0)
- return ret;
- if (confirmOID != cert->signatureOID)
- return ASN_SIG_OID_E;
- #ifndef NO_SKID
- if (cert->extSubjKeyIdSet == 0 && cert->publicKey != NULL &&
- cert->pubKeySize > 0) {
- #ifdef NO_SHA
- ret = wc_Sha256Hash(cert->publicKey, cert->pubKeySize,
- cert->extSubjKeyId);
- #else
- ret = wc_ShaHash(cert->publicKey, cert->pubKeySize,
- cert->extSubjKeyId);
- #endif /* NO_SHA */
- if (ret != 0)
- return ret;
- }
- #endif /* !NO_SKID */
- if (verify != NO_VERIFY && type != CA_TYPE && type != TRUSTED_PEER_TYPE) {
- cert->ca = NULL;
- #ifndef NO_SKID
- if (cert->extAuthKeyIdSet)
- cert->ca = GetCA(cm, cert->extAuthKeyId);
- if (cert->ca == NULL)
- cert->ca = GetCAByName(cm, cert->issuerHash);
- /* OCSP Only: alt lookup using subject and pub key w/o sig check */
- #ifdef WOLFSSL_NO_TRUSTED_CERTS_VERIFY
- if (cert->ca == NULL && verify == VERIFY_OCSP) {
- cert->ca = GetCABySubjectAndPubKey(cert, cm);
- if (cert->ca) {
- ret = 0; /* success */
- goto exit_pcr;
- }
- }
- #endif /* WOLFSSL_NO_TRUSTED_CERTS_VERIFY */
- /* alt lookup using subject and public key */
- #ifdef WOLFSSL_ALT_CERT_CHAINS
- if (cert->ca == NULL)
- cert->ca = GetCABySubjectAndPubKey(cert, cm);
- #endif
- #else
- cert->ca = GetCA(cm, cert->issuerHash);
- #endif /* !NO_SKID */
- WOLFSSL_MSG("About to verify certificate signature");
- if (cert->ca) {
- if (cert->isCA) {
- if (cert->ca->pathLengthSet) {
- if (cert->ca->pathLength == 0) {
- WOLFSSL_MSG("CA with path length 0 signing a CA");
- return ASN_PATHLEN_INV_E;
- }
- if (cert->pathLengthSet &&
- cert->pathLength >= cert->ca->pathLength) {
- WOLFSSL_MSG("CA signing CA with longer path length");
- return ASN_PATHLEN_INV_E;
- }
- }
- }
- #ifdef HAVE_OCSP
- /* Need the CA's public key hash for OCSP */
- #ifdef NO_SHA
- ret = wc_Sha256Hash(cert->ca->publicKey, cert->ca->pubKeySize,
- cert->issuerKeyHash);
- #else
- ret = wc_ShaHash(cert->ca->publicKey, cert->ca->pubKeySize,
- cert->issuerKeyHash);
- #endif /* NO_SHA */
- if (ret != 0)
- return ret;
- #endif /* HAVE_OCSP */
- }
- }
- }
- if (verify != NO_VERIFY && type != CA_TYPE && type != TRUSTED_PEER_TYPE) {
- if (cert->ca) {
- if (verify == VERIFY || verify == VERIFY_OCSP) {
- /* try to confirm/verify signature */
- if ((ret = ConfirmSignature(&cert->sigCtx,
- cert->source + cert->certBegin,
- cert->sigIndex - cert->certBegin,
- cert->ca->publicKey, cert->ca->pubKeySize,
- cert->ca->keyOID, cert->signature,
- cert->sigLength, cert->signatureOID)) != 0) {
- if (ret != WC_PENDING_E) {
- WOLFSSL_MSG("Confirm signature failed");
- }
- return ret;
- }
- #ifndef IGNORE_NAME_CONSTRAINTS
- /* check that this cert's name is permitted by the signer's
- * name constraints */
- if (!ConfirmNameConstraints(cert->ca, cert)) {
- WOLFSSL_MSG("Confirm name constraint failed");
- return ASN_NAME_INVALID_E;
- }
- #endif /* IGNORE_NAME_CONSTRAINTS */
- }
- }
- else {
- /* no signer */
- WOLFSSL_MSG("No CA signer to verify with");
- return ASN_NO_SIGNER_E;
- }
- }
- #if defined(WOLFSSL_NO_TRUSTED_CERTS_VERIFY) && !defined(NO_SKID)
- exit_pcr:
- #endif
- if (badDate != 0)
- return badDate;
- if (criticalExt != 0)
- return criticalExt;
- return ret;
- }
- /* Create and init an new signer */
- Signer* MakeSigner(void* heap)
- {
- Signer* signer = (Signer*) XMALLOC(sizeof(Signer), heap,
- DYNAMIC_TYPE_SIGNER);
- if (signer) {
- signer->pubKeySize = 0;
- signer->keyOID = 0;
- signer->publicKey = NULL;
- signer->nameLen = 0;
- signer->name = NULL;
- #ifndef IGNORE_NAME_CONSTRAINTS
- signer->permittedNames = NULL;
- signer->excludedNames = NULL;
- #endif /* IGNORE_NAME_CONSTRAINTS */
- signer->pathLengthSet = 0;
- signer->pathLength = 0;
- signer->next = NULL;
- }
- (void)heap;
- return signer;
- }
- /* Free an individual signer */
- void FreeSigner(Signer* signer, void* heap)
- {
- XFREE(signer->name, heap, DYNAMIC_TYPE_SUBJECT_CN);
- XFREE(signer->publicKey, heap, DYNAMIC_TYPE_PUBLIC_KEY);
- #ifndef IGNORE_NAME_CONSTRAINTS
- if (signer->permittedNames)
- FreeNameSubtrees(signer->permittedNames, heap);
- if (signer->excludedNames)
- FreeNameSubtrees(signer->excludedNames, heap);
- #endif
- XFREE(signer, heap, DYNAMIC_TYPE_SIGNER);
- (void)heap;
- }
- /* Free the whole singer table with number of rows */
- void FreeSignerTable(Signer** table, int rows, void* heap)
- {
- int i;
- for (i = 0; i < rows; i++) {
- Signer* signer = table[i];
- while (signer) {
- Signer* next = signer->next;
- FreeSigner(signer, heap);
- signer = next;
- }
- table[i] = NULL;
- }
- }
- #ifdef WOLFSSL_TRUST_PEER_CERT
- /* Free an individual trusted peer cert */
- void FreeTrustedPeer(TrustedPeerCert* tp, void* heap)
- {
- if (tp == NULL) {
- return;
- }
- if (tp->name) {
- XFREE(tp->name, heap, DYNAMIC_TYPE_SUBJECT_CN);
- }
- if (tp->sig) {
- XFREE(tp->sig, heap, DYNAMIC_TYPE_SIGNATURE);
- }
- #ifndef IGNORE_NAME_CONSTRAINTS
- if (tp->permittedNames)
- FreeNameSubtrees(tp->permittedNames, heap);
- if (tp->excludedNames)
- FreeNameSubtrees(tp->excludedNames, heap);
- #endif
- XFREE(tp, heap, DYNAMIC_TYPE_CERT);
- (void)heap;
- }
- /* Free the whole Trusted Peer linked list */
- void FreeTrustedPeerTable(TrustedPeerCert** table, int rows, void* heap)
- {
- int i;
- for (i = 0; i < rows; i++) {
- TrustedPeerCert* tp = table[i];
- while (tp) {
- TrustedPeerCert* next = tp->next;
- FreeTrustedPeer(tp, heap);
- tp = next;
- }
- table[i] = NULL;
- }
- }
- #endif /* WOLFSSL_TRUST_PEER_CERT */
- WOLFSSL_LOCAL int SetMyVersion(word32 version, byte* output, int header)
- {
- int i = 0;
- if (output == NULL)
- return BAD_FUNC_ARG;
- if (header) {
- output[i++] = ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED;
- output[i++] = 3;
- }
- output[i++] = ASN_INTEGER;
- output[i++] = 0x01;
- output[i++] = (byte)version;
- return i;
- }
- WOLFSSL_LOCAL int SetSerialNumber(const byte* sn, word32 snSz, byte* output,
- int maxSnSz)
- {
- int i = 0;
- int snSzInt = (int)snSz;
- if (sn == NULL || output == NULL || snSzInt < 0)
- return BAD_FUNC_ARG;
- /* remove leading zeros */
- while (snSzInt > 0 && sn[0] == 0) {
- snSzInt--;
- sn++;
- }
- /* truncate if input is too long */
- if (snSzInt > maxSnSz)
- snSzInt = maxSnSz;
- /* encode ASN Integer, with length and value */
- output[i++] = ASN_INTEGER;
- /* handle MSB, to make sure value is positive */
- if (sn[0] & 0x80) {
- /* make room for zero pad */
- if (snSzInt > maxSnSz-1)
- snSzInt = maxSnSz-1;
- /* add zero pad */
- i += SetLength(snSzInt+1, &output[i]);
- output[i++] = 0x00;
- XMEMCPY(&output[i], sn, snSzInt);
- }
- else {
- i += SetLength(snSzInt, &output[i]);
- XMEMCPY(&output[i], sn, snSzInt);
- }
- /* compute final length */
- i += snSzInt;
- return i;
- }
- WOLFSSL_LOCAL int GetSerialNumber(const byte* input, word32* inOutIdx,
- byte* serial, int* serialSz, word32 maxIdx)
- {
- int result = 0;
- int ret;
- WOLFSSL_ENTER("GetSerialNumber");
- if (serial == NULL || input == NULL || serialSz == NULL) {
- return BAD_FUNC_ARG;
- }
- /* First byte is ASN type */
- if ((*inOutIdx+1) > maxIdx) {
- WOLFSSL_MSG("Bad idx first");
- return BUFFER_E;
- }
- ret = GetASNInt(input, inOutIdx, serialSz, maxIdx);
- if (ret != 0)
- return ret;
- if (*serialSz > EXTERNAL_SERIAL_SIZE) {
- WOLFSSL_MSG("Serial size bad");
- return ASN_PARSE_E;
- }
- /* return serial */
- XMEMCPY(serial, &input[*inOutIdx], *serialSz);
- *inOutIdx += *serialSz;
- return result;
- }
- const char* BEGIN_CERT = "-----BEGIN CERTIFICATE-----";
- const char* END_CERT = "-----END CERTIFICATE-----";
- const char* BEGIN_CERT_REQ = "-----BEGIN CERTIFICATE REQUEST-----";
- const char* END_CERT_REQ = "-----END CERTIFICATE REQUEST-----";
- const char* BEGIN_DH_PARAM = "-----BEGIN DH PARAMETERS-----";
- const char* END_DH_PARAM = "-----END DH PARAMETERS-----";
- const char* BEGIN_DSA_PARAM = "-----BEGIN DSA PARAMETERS-----";
- const char* END_DSA_PARAM = "-----END DSA PARAMETERS-----";
- const char* BEGIN_X509_CRL = "-----BEGIN X509 CRL-----";
- const char* END_X509_CRL = "-----END X509 CRL-----";
- const char* BEGIN_RSA_PRIV = "-----BEGIN RSA PRIVATE KEY-----";
- const char* END_RSA_PRIV = "-----END RSA PRIVATE KEY-----";
- const char* BEGIN_PRIV_KEY = "-----BEGIN PRIVATE KEY-----";
- const char* END_PRIV_KEY = "-----END PRIVATE KEY-----";
- const char* BEGIN_ENC_PRIV_KEY = "-----BEGIN ENCRYPTED PRIVATE KEY-----";
- const char* END_ENC_PRIV_KEY = "-----END ENCRYPTED PRIVATE KEY-----";
- const char* BEGIN_EC_PRIV = "-----BEGIN EC PRIVATE KEY-----";
- const char* END_EC_PRIV = "-----END EC PRIVATE KEY-----";
- const char* BEGIN_DSA_PRIV = "-----BEGIN DSA PRIVATE KEY-----";
- const char* END_DSA_PRIV = "-----END DSA PRIVATE KEY-----";
- const char* BEGIN_PUB_KEY = "-----BEGIN PUBLIC KEY-----";
- const char* END_PUB_KEY = "-----END PUBLIC KEY-----";
- const char* BEGIN_EDDSA_PRIV = "-----BEGIN EDDSA PRIVATE KEY-----";
- const char* END_EDDSA_PRIV = "-----END EDDSA PRIVATE KEY-----";
- #if defined(WOLFSSL_KEY_GEN) || defined(WOLFSSL_CERT_GEN) || defined(OPENSSL_EXTRA)
- /* Used for compatibility API */
- int wc_DerToPem(const byte* der, word32 derSz,
- byte* output, word32 outSz, int type)
- {
- return wc_DerToPemEx(der, derSz, output, outSz, NULL, type);
- }
- /* convert der buffer to pem into output, can't do inplace, der and output
- need to be different */
- int wc_DerToPemEx(const byte* der, word32 derSz, byte* output, word32 outSz,
- byte *cipher_info, int type)
- {
- #ifdef WOLFSSL_SMALL_STACK
- char* header = NULL;
- char* footer = NULL;
- #else
- char header[40 + HEADER_ENCRYPTED_KEY_SIZE];
- char footer[40];
- #endif
- int headerLen = 40 + HEADER_ENCRYPTED_KEY_SIZE;
- int footerLen = 40;
- int i;
- int err;
- int outLen; /* return length or error */
- if (der == output) /* no in place conversion */
- return BAD_FUNC_ARG;
- #ifdef WOLFSSL_SMALL_STACK
- header = (char*)XMALLOC(headerLen, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (header == NULL)
- return MEMORY_E;
- footer = (char*)XMALLOC(footerLen, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (footer == NULL) {
- XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
- #endif
- if (type == CERT_TYPE) {
- XSTRNCPY(header, BEGIN_CERT, headerLen);
- XSTRNCAT(header, "\n", 1);
- XSTRNCPY(footer, END_CERT, footerLen);
- XSTRNCAT(footer, "\n", 1);
- }
- else if (type == PRIVATEKEY_TYPE) {
- XSTRNCPY(header, BEGIN_RSA_PRIV, headerLen);
- XSTRNCAT(header, "\n", 1);
- XSTRNCPY(footer, END_RSA_PRIV, footerLen);
- XSTRNCAT(footer, "\n", 1);
- }
- else if (type == PUBLICKEY_TYPE) {
- XSTRNCPY(header, BEGIN_PUB_KEY, headerLen);
- XSTRNCAT(header, "\n", 1);
- XSTRNCPY(footer, END_PUB_KEY, footerLen);
- XSTRNCAT(footer, "\n", 1);
- }
- #ifndef NO_DSA
- else if (type == DSA_PRIVATEKEY_TYPE) {
- XSTRNCPY(header, BEGIN_DSA_PRIV, headerLen);
- XSTRNCAT(header, "\n", 1);
- XSTRNCPY(footer, END_DSA_PRIV, footerLen);
- XSTRNCAT(footer, "\n", 1);
- }
- #endif
- #ifdef HAVE_ECC
- else if (type == ECC_PRIVATEKEY_TYPE) {
- XSTRNCPY(header, BEGIN_EC_PRIV, headerLen);
- XSTRNCAT(header, "\n", 1);
- XSTRNCPY(footer, END_EC_PRIV, footerLen);
- XSTRNCAT(footer, "\n", 1);
- }
- #endif
- #ifdef HAVE_ED25519
- else if (type == EDDSA_PRIVATEKEY_TYPE) {
- XSTRNCPY(header, BEGIN_EDDSA_PRIV, headerLen);
- XSTRNCAT(header, "\n", 1);
- XSTRNCPY(footer, END_EDDSA_PRIV, footerLen);
- XSTRNCAT(footer, "\n", 1);
- }
- #endif
- #ifdef WOLFSSL_CERT_REQ
- else if (type == CERTREQ_TYPE)
- {
- XSTRNCPY(header, BEGIN_CERT_REQ, headerLen);
- XSTRNCAT(header, "\n", 1);
- XSTRNCPY(footer, END_CERT_REQ, footerLen);
- XSTRNCAT(footer, "\n", 1);
- }
- #endif
- #ifdef HAVE_CRL
- else if (type == CRL_TYPE)
- {
- XSTRNCPY(header, BEGIN_X509_CRL, headerLen);
- XSTRNCAT(header, "\n", 1);
- XSTRNCPY(footer, END_X509_CRL, footerLen);
- XSTRNCAT(footer, "\n", 1);
- }
- #endif
- else {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BAD_FUNC_ARG;
- }
- /* extra header information for encrypted key */
- if (cipher_info != NULL) {
- size_t cipherInfoStrLen = XSTRLEN((char*)cipher_info);
- if (cipherInfoStrLen > HEADER_ENCRYPTED_KEY_SIZE - (23+10+2))
- cipherInfoStrLen = HEADER_ENCRYPTED_KEY_SIZE - (23+10+2);
- XSTRNCAT(header, "Proc-Type: 4,ENCRYPTED\n", 23);
- XSTRNCAT(header, "DEK-Info: ", 10);
- XSTRNCAT(header, (char*)cipher_info, cipherInfoStrLen);
- XSTRNCAT(header, "\n\n", 2);
- }
- headerLen = (int)XSTRLEN(header);
- footerLen = (int)XSTRLEN(footer);
- /* if null output and 0 size passed in then return size needed */
- if (!output && outSz == 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- outLen = 0;
- if ((err = Base64_Encode(der, derSz, NULL, (word32*)&outLen))
- != LENGTH_ONLY_E) {
- return err;
- }
- return headerLen + footerLen + outLen;
- }
- if (!der || !output) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BAD_FUNC_ARG;
- }
- /* don't even try if outSz too short */
- if (outSz < headerLen + footerLen + derSz) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BAD_FUNC_ARG;
- }
- /* header */
- XMEMCPY(output, header, headerLen);
- i = headerLen;
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(header, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- /* body */
- outLen = outSz - (headerLen + footerLen); /* input to Base64_Encode */
- if ( (err = Base64_Encode(der, derSz, output + i, (word32*)&outLen)) < 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return err;
- }
- i += outLen;
- /* footer */
- if ( (i + footerLen) > (int)outSz) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BAD_FUNC_ARG;
- }
- XMEMCPY(output + i, footer, footerLen);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(footer, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return outLen + headerLen + footerLen;
- }
- #endif /* WOLFSSL_KEY_GEN || WOLFSSL_CERT_GEN || OPENSSL_EXTRA */
- #if !defined(NO_RSA) && (defined(WOLFSSL_CERT_GEN) || \
- (defined(WOLFSSL_KEY_GEN) && !defined(HAVE_USER_RSA)))
- /* USER RSA ifdef portions used instead of refactor in consideration for
- possible fips build */
- /* Write a public RSA key to output */
- static int SetRsaPublicKey(byte* output, RsaKey* key,
- int outLen, int with_header)
- {
- #ifdef WOLFSSL_SMALL_STACK
- byte* n = NULL;
- byte* e = NULL;
- #else
- byte n[MAX_RSA_INT_SZ];
- byte e[MAX_RSA_E_SZ];
- #endif
- byte seq[MAX_SEQ_SZ];
- byte bitString[1 + MAX_LENGTH_SZ + 1];
- int nSz;
- int eSz;
- int seqSz;
- int bitStringSz;
- int idx;
- if (output == NULL || key == NULL || outLen < MAX_SEQ_SZ)
- return BAD_FUNC_ARG;
- /* n */
- #ifdef WOLFSSL_SMALL_STACK
- n = (byte*)XMALLOC(MAX_RSA_INT_SZ, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (n == NULL)
- return MEMORY_E;
- #endif
- #ifdef HAVE_USER_RSA
- nSz = SetASNIntRSA(key->n, n);
- #else
- nSz = SetASNIntMP(&key->n, MAX_RSA_INT_SZ, n);
- #endif
- if (nSz < 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(n, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return nSz;
- }
- /* e */
- #ifdef WOLFSSL_SMALL_STACK
- e = (byte*)XMALLOC(MAX_RSA_E_SZ, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (e == NULL) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(n, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return MEMORY_E;
- }
- #endif
- #ifdef HAVE_USER_RSA
- eSz = SetASNIntRSA(key->e, e);
- #else
- eSz = SetASNIntMP(&key->e, MAX_RSA_INT_SZ, e);
- #endif
- if (eSz < 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(n, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(e, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return eSz;
- }
- seqSz = SetSequence(nSz + eSz, seq);
- /* check output size */
- if ( (seqSz + nSz + eSz) > outLen) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(n, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(e, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BUFFER_E;
- }
- /* headers */
- if (with_header) {
- int algoSz;
- #ifdef WOLFSSL_SMALL_STACK
- byte* algo = NULL;
- algo = (byte*)XMALLOC(MAX_ALGO_SZ, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (algo == NULL) {
- XFREE(n, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(e, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
- #else
- byte algo[MAX_ALGO_SZ];
- #endif
- algoSz = SetAlgoID(RSAk, algo, oidKeyType, 0);
- bitStringSz = SetBitString(seqSz + nSz + eSz, 0, bitString);
- idx = SetSequence(nSz + eSz + seqSz + bitStringSz + algoSz, output);
- /* check output size */
- if ( (idx + algoSz + bitStringSz + seqSz + nSz + eSz) > outLen) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(n, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(e, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(algo, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BUFFER_E;
- }
- /* algo */
- XMEMCPY(output + idx, algo, algoSz);
- idx += algoSz;
- /* bit string */
- XMEMCPY(output + idx, bitString, bitStringSz);
- idx += bitStringSz;
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(algo, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- }
- else
- idx = 0;
- /* seq */
- XMEMCPY(output + idx, seq, seqSz);
- idx += seqSz;
- /* n */
- XMEMCPY(output + idx, n, nSz);
- idx += nSz;
- /* e */
- XMEMCPY(output + idx, e, eSz);
- idx += eSz;
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(n, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(e, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return idx;
- }
- #endif /* !NO_RSA && (WOLFSSL_CERT_GEN || (WOLFSSL_KEY_GEN &&
- !HAVE_USER_RSA))) */
- #if defined(WOLFSSL_KEY_GEN) && !defined(NO_RSA) && !defined(HAVE_USER_RSA)
- static mp_int* GetRsaInt(RsaKey* key, int idx)
- {
- if (idx == 0)
- return &key->n;
- if (idx == 1)
- return &key->e;
- if (idx == 2)
- return &key->d;
- if (idx == 3)
- return &key->p;
- if (idx == 4)
- return &key->q;
- if (idx == 5)
- return &key->dP;
- if (idx == 6)
- return &key->dQ;
- if (idx == 7)
- return &key->u;
- return NULL;
- }
- /* Release Tmp RSA resources */
- static INLINE void FreeTmpRsas(byte** tmps, void* heap)
- {
- int i;
- (void)heap;
- for (i = 0; i < RSA_INTS; i++)
- XFREE(tmps[i], heap, DYNAMIC_TYPE_RSA);
- }
- /* Convert RsaKey key to DER format, write to output (inLen), return bytes
- written */
- int wc_RsaKeyToDer(RsaKey* key, byte* output, word32 inLen)
- {
- word32 seqSz, verSz, rawLen, intTotalLen = 0;
- word32 sizes[RSA_INTS];
- int i, j, outLen, ret = 0, mpSz;
- byte seq[MAX_SEQ_SZ];
- byte ver[MAX_VERSION_SZ];
- byte* tmps[RSA_INTS];
- if (!key || !output)
- return BAD_FUNC_ARG;
- if (key->type != RSA_PRIVATE)
- return BAD_FUNC_ARG;
- for (i = 0; i < RSA_INTS; i++)
- tmps[i] = NULL;
- /* write all big ints from key to DER tmps */
- for (i = 0; i < RSA_INTS; i++) {
- mp_int* keyInt = GetRsaInt(key, i);
- rawLen = mp_unsigned_bin_size(keyInt) + 1;
- tmps[i] = (byte*)XMALLOC(rawLen + MAX_SEQ_SZ, key->heap,
- DYNAMIC_TYPE_RSA);
- if (tmps[i] == NULL) {
- ret = MEMORY_E;
- break;
- }
- mpSz = SetASNIntMP(keyInt, MAX_RSA_INT_SZ, tmps[i]);
- if (mpSz < 0) {
- ret = mpSz;
- break;
- }
- intTotalLen += (sizes[i] = mpSz);
- }
- if (ret != 0) {
- FreeTmpRsas(tmps, key->heap);
- return ret;
- }
- /* make headers */
- verSz = SetMyVersion(0, ver, FALSE);
- seqSz = SetSequence(verSz + intTotalLen, seq);
- outLen = seqSz + verSz + intTotalLen;
- if (outLen > (int)inLen)
- return BAD_FUNC_ARG;
- /* write to output */
- XMEMCPY(output, seq, seqSz);
- j = seqSz;
- XMEMCPY(output + j, ver, verSz);
- j += verSz;
- for (i = 0; i < RSA_INTS; i++) {
- XMEMCPY(output + j, tmps[i], sizes[i]);
- j += sizes[i];
- }
- FreeTmpRsas(tmps, key->heap);
- return outLen;
- }
- /* Convert Rsa Public key to DER format, write to output (inLen), return bytes
- written */
- int wc_RsaKeyToPublicDer(RsaKey* key, byte* output, word32 inLen)
- {
- return SetRsaPublicKey(output, key, inLen, 1);
- }
- #endif /* WOLFSSL_KEY_GEN && !NO_RSA && !HAVE_USER_RSA */
- #ifdef WOLFSSL_CERT_GEN
- /* Initialize and Set Certificate defaults:
- version = 3 (0x2)
- serial = 0
- sigType = SHA_WITH_RSA
- issuer = blank
- daysValid = 500
- selfSigned = 1 (true) use subject as issuer
- subject = blank
- */
- int wc_InitCert(Cert* cert)
- {
- if (cert == NULL) {
- return BAD_FUNC_ARG;
- }
- cert->version = 2; /* version 3 is hex 2 */
- cert->sigType = CTC_SHAwRSA;
- cert->daysValid = 500;
- cert->selfSigned = 1;
- cert->isCA = 0;
- cert->bodySz = 0;
- #ifdef WOLFSSL_ALT_NAMES
- cert->altNamesSz = 0;
- cert->beforeDateSz = 0;
- cert->afterDateSz = 0;
- #endif
- #ifdef WOLFSSL_CERT_EXT
- cert->skidSz = 0;
- cert->akidSz = 0;
- cert->keyUsage = 0;
- cert->extKeyUsage = 0;
- cert->certPoliciesNb = 0;
- XMEMSET(cert->akid, 0, CTC_MAX_AKID_SIZE);
- XMEMSET(cert->skid, 0, CTC_MAX_SKID_SIZE);
- XMEMSET(cert->certPolicies, 0, CTC_MAX_CERTPOL_NB*CTC_MAX_CERTPOL_SZ);
- #endif
- cert->keyType = RSA_KEY;
- XMEMSET(cert->serial, 0, CTC_SERIAL_SIZE);
- cert->serialSz = 0;
- cert->issuer.country[0] = '\0';
- cert->issuer.countryEnc = CTC_PRINTABLE;
- cert->issuer.state[0] = '\0';
- cert->issuer.stateEnc = CTC_UTF8;
- cert->issuer.locality[0] = '\0';
- cert->issuer.localityEnc = CTC_UTF8;
- cert->issuer.sur[0] = '\0';
- cert->issuer.surEnc = CTC_UTF8;
- cert->issuer.org[0] = '\0';
- cert->issuer.orgEnc = CTC_UTF8;
- cert->issuer.unit[0] = '\0';
- cert->issuer.unitEnc = CTC_UTF8;
- cert->issuer.commonName[0] = '\0';
- cert->issuer.commonNameEnc = CTC_UTF8;
- cert->issuer.email[0] = '\0';
- cert->subject.country[0] = '\0';
- cert->subject.countryEnc = CTC_PRINTABLE;
- cert->subject.state[0] = '\0';
- cert->subject.stateEnc = CTC_UTF8;
- cert->subject.locality[0] = '\0';
- cert->subject.localityEnc = CTC_UTF8;
- cert->subject.sur[0] = '\0';
- cert->subject.surEnc = CTC_UTF8;
- cert->subject.org[0] = '\0';
- cert->subject.orgEnc = CTC_UTF8;
- cert->subject.unit[0] = '\0';
- cert->subject.unitEnc = CTC_UTF8;
- cert->subject.commonName[0] = '\0';
- cert->subject.commonNameEnc = CTC_UTF8;
- cert->subject.email[0] = '\0';
- #ifdef WOLFSSL_CERT_REQ
- cert->challengePw[0] ='\0';
- #endif
- #ifdef WOLFSSL_HEAP_TEST
- cert->heap = (void*)WOLFSSL_HEAP_TEST;
- #else
- cert->heap = NULL;
- #endif
- return 0;
- }
- /* DER encoded x509 Certificate */
- typedef struct DerCert {
- byte size[MAX_LENGTH_SZ]; /* length encoded */
- byte version[MAX_VERSION_SZ]; /* version encoded */
- byte serial[CTC_SERIAL_SIZE + MAX_LENGTH_SZ]; /* serial number encoded */
- byte sigAlgo[MAX_ALGO_SZ]; /* signature algo encoded */
- byte issuer[ASN_NAME_MAX]; /* issuer encoded */
- byte subject[ASN_NAME_MAX]; /* subject encoded */
- byte validity[MAX_DATE_SIZE*2 + MAX_SEQ_SZ*2]; /* before and after dates */
- byte publicKey[MAX_PUBLIC_KEY_SZ]; /* rsa / ntru public key encoded */
- byte ca[MAX_CA_SZ]; /* basic constraint CA true size */
- byte extensions[MAX_EXTENSIONS_SZ]; /* all extensions */
- #ifdef WOLFSSL_CERT_EXT
- byte skid[MAX_KID_SZ]; /* Subject Key Identifier extension */
- byte akid[MAX_KID_SZ]; /* Authority Key Identifier extension */
- byte keyUsage[MAX_KEYUSAGE_SZ]; /* Key Usage extension */
- byte extKeyUsage[MAX_EXTKEYUSAGE_SZ]; /* Extended Key Usage extension */
- byte certPolicies[MAX_CERTPOL_NB*MAX_CERTPOL_SZ]; /* Certificate Policies */
- #endif
- #ifdef WOLFSSL_CERT_REQ
- byte attrib[MAX_ATTRIB_SZ]; /* Cert req attributes encoded */
- #endif
- #ifdef WOLFSSL_ALT_NAMES
- byte altNames[CTC_MAX_ALT_SIZE]; /* Alternative Names encoded */
- #endif
- int sizeSz; /* encoded size length */
- int versionSz; /* encoded version length */
- int serialSz; /* encoded serial length */
- int sigAlgoSz; /* encoded sig alog length */
- int issuerSz; /* encoded issuer length */
- int subjectSz; /* encoded subject length */
- int validitySz; /* encoded validity length */
- int publicKeySz; /* encoded public key length */
- int caSz; /* encoded CA extension length */
- #ifdef WOLFSSL_CERT_EXT
- int skidSz; /* encoded SKID extension length */
- int akidSz; /* encoded SKID extension length */
- int keyUsageSz; /* encoded KeyUsage extension length */
- int extKeyUsageSz; /* encoded ExtendedKeyUsage extension length */
- int certPoliciesSz; /* encoded CertPolicies extension length*/
- #endif
- #ifdef WOLFSSL_ALT_NAMES
- int altNamesSz; /* encoded AltNames extension length */
- #endif
- int extensionsSz; /* encoded extensions total length */
- int total; /* total encoded lengths */
- #ifdef WOLFSSL_CERT_REQ
- int attribSz;
- #endif
- } DerCert;
- #ifdef WOLFSSL_CERT_REQ
- /* Write a set header to output */
- static word32 SetUTF8String(word32 len, byte* output)
- {
- output[0] = ASN_UTF8STRING;
- return SetLength(len, output + 1) + 1;
- }
- #endif /* WOLFSSL_CERT_REQ */
- #endif /*WOLFSSL_CERT_GEN */
- #if defined(HAVE_ECC)
- /* Write a public ECC key to output */
- static int SetEccPublicKey(byte* output, ecc_key* key, int with_header)
- {
- byte bitString[1 + MAX_LENGTH_SZ + 1];
- int algoSz;
- int curveSz;
- int bitStringSz;
- int idx;
- word32 pubSz = ECC_BUFSIZE;
- #ifdef WOLFSSL_SMALL_STACK
- byte* algo = NULL;
- byte* curve = NULL;
- byte* pub = NULL;
- #else
- byte algo[MAX_ALGO_SZ];
- byte curve[MAX_ALGO_SZ];
- byte pub[ECC_BUFSIZE];
- #endif
- #ifdef WOLFSSL_SMALL_STACK
- pub = (byte*)XMALLOC(ECC_BUFSIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (pub == NULL)
- return MEMORY_E;
- #endif
- int ret = wc_ecc_export_x963(key, pub, &pubSz);
- if (ret != 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- /* headers */
- if (with_header) {
- #ifdef WOLFSSL_SMALL_STACK
- curve = (byte*)XMALLOC(MAX_ALGO_SZ, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (curve == NULL) {
- XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
- #endif
- curveSz = SetCurve(key, curve);
- if (curveSz <= 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(curve, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return curveSz;
- }
- #ifdef WOLFSSL_SMALL_STACK
- algo = (byte*)XMALLOC(MAX_ALGO_SZ, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (algo == NULL) {
- XFREE(curve, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
- #endif
- algoSz = SetAlgoID(ECDSAk, algo, oidKeyType, curveSz);
- bitStringSz = SetBitString(pubSz, 0, bitString);
- idx = SetSequence(pubSz + curveSz + bitStringSz + algoSz, output);
- /* algo */
- XMEMCPY(output + idx, algo, algoSz);
- idx += algoSz;
- /* curve */
- XMEMCPY(output + idx, curve, curveSz);
- idx += curveSz;
- /* bit string */
- XMEMCPY(output + idx, bitString, bitStringSz);
- idx += bitStringSz;
- }
- else
- idx = 0;
- /* pub */
- XMEMCPY(output + idx, pub, pubSz);
- idx += pubSz;
- #ifdef WOLFSSL_SMALL_STACK
- if (with_header) {
- XFREE(algo, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(curve, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- }
- XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return idx;
- }
- /* returns the size of buffer used, the public ECC key in DER format is stored
- in output buffer
- with_AlgCurve is a flag for when to include a header that has the Algorithm
- and Curve infromation */
- int wc_EccPublicKeyToDer(ecc_key* key, byte* output, word32 inLen,
- int with_AlgCurve)
- {
- word32 infoSz = 0;
- word32 keySz = 0;
- int ret;
- if (output == NULL || key == NULL) {
- return BAD_FUNC_ARG;
- }
- if (with_AlgCurve) {
- /* buffer space for algorithm/curve */
- infoSz += MAX_SEQ_SZ;
- infoSz += 2 * MAX_ALGO_SZ;
- /* buffer space for public key sequence */
- infoSz += MAX_SEQ_SZ;
- infoSz += TRAILING_ZERO;
- }
- if ((ret = wc_ecc_export_x963(key, NULL, &keySz)) != LENGTH_ONLY_E) {
- WOLFSSL_MSG("Error in getting ECC public key size");
- return ret;
- }
- if (inLen < keySz + infoSz) {
- return BUFFER_E;
- }
- return SetEccPublicKey(output, key, with_AlgCurve);
- }
- #endif /* HAVE_ECC */
- #if defined(HAVE_ED25519) && (defined(WOLFSSL_CERT_GEN) || \
- defined(WOLFSSL_KEY_GEN))
- /* Write a public ECC key to output */
- static int SetEd25519PublicKey(byte* output, ed25519_key* key, int with_header)
- {
- byte bitString[1 + MAX_LENGTH_SZ + 1];
- int algoSz;
- int bitStringSz;
- int idx;
- word32 pubSz = ED25519_PUB_KEY_SIZE;
- #ifdef WOLFSSL_SMALL_STACK
- byte* algo = NULL;
- byte* pub = NULL;
- #else
- byte algo[MAX_ALGO_SZ];
- byte pub[ED25519_PUB_KEY_SIZE];
- #endif
- #ifdef WOLFSSL_SMALL_STACK
- pub = (byte*)XMALLOC(ECC_BUFSIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (pub == NULL)
- return MEMORY_E;
- #endif
- int ret = wc_ed25519_export_public(key, pub, &pubSz);
- if (ret != 0) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- /* headers */
- if (with_header) {
- #ifdef WOLFSSL_SMALL_STACK
- algo = (byte*)XMALLOC(MAX_ALGO_SZ, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (algo == NULL) {
- XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
- #endif
- algoSz = SetAlgoID(ED25519k, algo, oidKeyType, 0);
- bitStringSz = SetBitString(pubSz, 0, bitString);
- idx = SetSequence(pubSz + bitStringSz + algoSz, output);
- /* algo */
- XMEMCPY(output + idx, algo, algoSz);
- idx += algoSz;
- /* bit string */
- XMEMCPY(output + idx, bitString, bitStringSz);
- idx += bitStringSz;
- }
- else
- idx = 0;
- /* pub */
- XMEMCPY(output + idx, pub, pubSz);
- idx += pubSz;
- #ifdef WOLFSSL_SMALL_STACK
- if (with_header) {
- XFREE(algo, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- }
- XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return idx;
- }
- int wc_Ed25519PublicKeyToDer(ed25519_key* key, byte* output, word32 inLen,
- int withAlg)
- {
- word32 infoSz = 0;
- word32 keySz = 0;
- int ret;
- if (output == NULL || key == NULL) {
- return BAD_FUNC_ARG;
- }
- if (withAlg) {
- /* buffer space for algorithm */
- infoSz += MAX_SEQ_SZ;
- infoSz += MAX_ALGO_SZ;
- /* buffer space for public key sequence */
- infoSz += MAX_SEQ_SZ;
- infoSz += TRAILING_ZERO;
- }
- if ((ret = wc_ed25519_export_public(key, output, &keySz)) != BUFFER_E) {
- WOLFSSL_MSG("Error in getting ECC public key size");
- return ret;
- }
- if (inLen < keySz + infoSz) {
- return BUFFER_E;
- }
- return SetEd25519PublicKey(output, key, withAlg);
- }
- #endif /* HAVE_ED25519 && (WOLFSSL_CERT_GEN || WOLFSSL_KEY_GEN) */
- #ifdef WOLFSSL_CERT_GEN
- static INLINE byte itob(int number)
- {
- return (byte)number + 0x30;
- }
- /* write time to output, format */
- static void SetTime(struct tm* date, byte* output)
- {
- int i = 0;
- output[i++] = itob((date->tm_year % 10000) / 1000);
- output[i++] = itob((date->tm_year % 1000) / 100);
- output[i++] = itob((date->tm_year % 100) / 10);
- output[i++] = itob( date->tm_year % 10);
- output[i++] = itob(date->tm_mon / 10);
- output[i++] = itob(date->tm_mon % 10);
- output[i++] = itob(date->tm_mday / 10);
- output[i++] = itob(date->tm_mday % 10);
- output[i++] = itob(date->tm_hour / 10);
- output[i++] = itob(date->tm_hour % 10);
- output[i++] = itob(date->tm_min / 10);
- output[i++] = itob(date->tm_min % 10);
- output[i++] = itob(date->tm_sec / 10);
- output[i++] = itob(date->tm_sec % 10);
- output[i] = 'Z'; /* Zulu profile */
- }
- #ifdef WOLFSSL_ALT_NAMES
- /* Copy Dates from cert, return bytes written */
- static int CopyValidity(byte* output, Cert* cert)
- {
- int seqSz;
- WOLFSSL_ENTER("CopyValidity");
- /* headers and output */
- seqSz = SetSequence(cert->beforeDateSz + cert->afterDateSz, output);
- XMEMCPY(output + seqSz, cert->beforeDate, cert->beforeDateSz);
- XMEMCPY(output + seqSz + cert->beforeDateSz, cert->afterDate,
- cert->afterDateSz);
- return seqSz + cert->beforeDateSz + cert->afterDateSz;
- }
- #endif
- /* for systems where mktime() doesn't normalize fully */
- static void RebuildTime(time_t* in, struct tm* out)
- {
- #if defined(FREESCALE_MQX) || defined(FREESCALE_KSDK_MQX)
- out = localtime_r(in, out);
- #else
- (void)in;
- (void)out;
- #endif
- }
- /* Set Date validity from now until now + daysValid
- * return size in bytes written to output, 0 on error */
- static int SetValidity(byte* output, int daysValid)
- {
- byte before[MAX_DATE_SIZE];
- byte after[MAX_DATE_SIZE];
- int beforeSz;
- int afterSz;
- int seqSz;
- time_t ticks;
- time_t normalTime;
- struct tm* now;
- struct tm* tmpTime = NULL;
- struct tm local;
- #if defined(NEED_TMP_TIME)
- /* for use with gmtime_r */
- struct tm tmpTimeStorage;
- tmpTime = &tmpTimeStorage;
- #else
- (void)tmpTime;
- #endif
- ticks = XTIME(0);
- now = XGMTIME(&ticks, tmpTime);
- if (now == NULL) {
- WOLFSSL_MSG("XGMTIME failed");
- return 0; /* error */
- }
- /* before now */
- local = *now;
- before[0] = ASN_GENERALIZED_TIME;
- beforeSz = SetLength(ASN_GEN_TIME_SZ, before + 1) + 1; /* gen tag */
- /* subtract 1 day for more compliance */
- local.tm_mday -= 1;
- normalTime = mktime(&local);
- RebuildTime(&normalTime, &local);
- /* adjust */
- local.tm_year += 1900;
- local.tm_mon += 1;
- SetTime(&local, before + beforeSz);
- beforeSz += ASN_GEN_TIME_SZ;
- /* after now + daysValid */
- local = *now;
- after[0] = ASN_GENERALIZED_TIME;
- afterSz = SetLength(ASN_GEN_TIME_SZ, after + 1) + 1; /* gen tag */
- /* add daysValid */
- local.tm_mday += daysValid;
- normalTime = mktime(&local);
- RebuildTime(&normalTime, &local);
- /* adjust */
- local.tm_year += 1900;
- local.tm_mon += 1;
- SetTime(&local, after + afterSz);
- afterSz += ASN_GEN_TIME_SZ;
- /* headers and output */
- seqSz = SetSequence(beforeSz + afterSz, output);
- XMEMCPY(output + seqSz, before, beforeSz);
- XMEMCPY(output + seqSz + beforeSz, after, afterSz);
- return seqSz + beforeSz + afterSz;
- }
- /* ASN Encoded Name field */
- typedef struct EncodedName {
- int nameLen; /* actual string value length */
- int totalLen; /* total encoded length */
- int type; /* type of name */
- int used; /* are we actually using this one */
- byte encoded[CTC_NAME_SIZE * 2]; /* encoding */
- } EncodedName;
- /* Get Which Name from index */
- static const char* GetOneName(CertName* name, int idx)
- {
- switch (idx) {
- case 0:
- return name->country;
- case 1:
- return name->state;
- case 2:
- return name->locality;
- case 3:
- return name->sur;
- case 4:
- return name->org;
- case 5:
- return name->unit;
- case 6:
- return name->commonName;
- case 7:
- return name->email;
- default:
- return 0;
- }
- }
- /* Get Which Name Encoding from index */
- static char GetNameType(CertName* name, int idx)
- {
- switch (idx) {
- case 0:
- return name->countryEnc;
- case 1:
- return name->stateEnc;
- case 2:
- return name->localityEnc;
- case 3:
- return name->surEnc;
- case 4:
- return name->orgEnc;
- case 5:
- return name->unitEnc;
- case 6:
- return name->commonNameEnc;
- default:
- return 0;
- }
- }
- /* Get ASN Name from index */
- static byte GetNameId(int idx)
- {
- switch (idx) {
- case 0:
- return ASN_COUNTRY_NAME;
- case 1:
- return ASN_STATE_NAME;
- case 2:
- return ASN_LOCALITY_NAME;
- case 3:
- return ASN_SUR_NAME;
- case 4:
- return ASN_ORG_NAME;
- case 5:
- return ASN_ORGUNIT_NAME;
- case 6:
- return ASN_COMMON_NAME;
- case 7:
- /* email uses different id type */
- return 0;
- default:
- return 0;
- }
- }
- /*
- Extensions ::= SEQUENCE OF Extension
- Extension ::= SEQUENCE {
- extnId OBJECT IDENTIFIER,
- critical BOOLEAN DEFAULT FALSE,
- extnValue OCTET STRING }
- */
- /* encode all extensions, return total bytes written */
- static int SetExtensions(byte* out, word32 outSz, int *IdxInOut,
- const byte* ext, int extSz)
- {
- if (out == NULL || IdxInOut == NULL || ext == NULL)
- return BAD_FUNC_ARG;
- if (outSz < (word32)(*IdxInOut+extSz))
- return BUFFER_E;
- XMEMCPY(&out[*IdxInOut], ext, extSz); /* extensions */
- *IdxInOut += extSz;
- return *IdxInOut;
- }
- /* encode extensions header, return total bytes written */
- static int SetExtensionsHeader(byte* out, word32 outSz, int extSz)
- {
- byte sequence[MAX_SEQ_SZ];
- byte len[MAX_LENGTH_SZ];
- int seqSz, lenSz, idx = 0;
- if (out == NULL)
- return BAD_FUNC_ARG;
- if (outSz < 3)
- return BUFFER_E;
- seqSz = SetSequence(extSz, sequence);
- /* encode extensions length provided */
- lenSz = SetLength(extSz+seqSz, len);
- if (outSz < (word32)(lenSz+seqSz+1))
- return BUFFER_E;
- out[idx++] = ASN_EXTENSIONS; /* extensions id */
- XMEMCPY(&out[idx], len, lenSz); /* length */
- idx += lenSz;
- XMEMCPY(&out[idx], sequence, seqSz); /* sequence */
- idx += seqSz;
- return idx;
- }
- /* encode CA basic constraint true, return total bytes written */
- static int SetCa(byte* out, word32 outSz)
- {
- static const byte ca[] = { 0x30, 0x0c, 0x06, 0x03, 0x55, 0x1d, 0x13, 0x04,
- 0x05, 0x30, 0x03, 0x01, 0x01, 0xff };
- if (out == NULL)
- return BAD_FUNC_ARG;
- if (outSz < sizeof(ca))
- return BUFFER_E;
- XMEMCPY(out, ca, sizeof(ca));
- return (int)sizeof(ca);
- }
- #ifdef WOLFSSL_CERT_EXT
- /* encode OID and associated value, return total bytes written */
- static int SetOidValue(byte* out, word32 outSz, const byte *oid, word32 oidSz,
- byte *in, word32 inSz)
- {
- int idx = 0;
- if (out == NULL || oid == NULL || in == NULL)
- return BAD_FUNC_ARG;
- if (outSz < 3)
- return BUFFER_E;
- /* sequence, + 1 => byte to put value size */
- idx = SetSequence(inSz + oidSz + 1, out);
- if ((idx + inSz + oidSz + 1) > outSz)
- return BUFFER_E;
- XMEMCPY(out+idx, oid, oidSz);
- idx += oidSz;
- out[idx++] = (byte)inSz;
- XMEMCPY(out+idx, in, inSz);
- return (idx+inSz);
- }
- /* encode Subject Key Identifier, return total bytes written
- * RFC5280 : non-critical */
- static int SetSKID(byte* output, word32 outSz, const byte *input, word32 length)
- {
- byte skid_len[1 + MAX_LENGTH_SZ];
- byte skid_enc_len[MAX_LENGTH_SZ];
- int idx = 0, skid_lenSz, skid_enc_lenSz;
- static const byte skid_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x0e, 0x04 };
- if (output == NULL || input == NULL)
- return BAD_FUNC_ARG;
- /* Octet String header */
- skid_lenSz = SetOctetString(length, skid_len);
- /* length of encoded value */
- skid_enc_lenSz = SetLength(length + skid_lenSz, skid_enc_len);
- if (outSz < 3)
- return BUFFER_E;
- idx = SetSequence(length + sizeof(skid_oid) + skid_lenSz + skid_enc_lenSz,
- output);
- if ((length + sizeof(skid_oid) + skid_lenSz + skid_enc_lenSz) > outSz)
- return BUFFER_E;
- /* put oid */
- XMEMCPY(output+idx, skid_oid, sizeof(skid_oid));
- idx += sizeof(skid_oid);
- /* put encoded len */
- XMEMCPY(output+idx, skid_enc_len, skid_enc_lenSz);
- idx += skid_enc_lenSz;
- /* put octet header */
- XMEMCPY(output+idx, skid_len, skid_lenSz);
- idx += skid_lenSz;
- /* put value */
- XMEMCPY(output+idx, input, length);
- idx += length;
- return idx;
- }
- /* encode Authority Key Identifier, return total bytes written
- * RFC5280 : non-critical */
- static int SetAKID(byte* output, word32 outSz,
- byte *input, word32 length, void* heap)
- {
- byte *enc_val;
- int ret, enc_valSz;
- static const byte akid_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04 };
- static const byte akid_cs[] = { 0x80 };
- if (output == NULL || input == NULL)
- return BAD_FUNC_ARG;
- enc_valSz = length + 3 + sizeof(akid_cs);
- enc_val = (byte *)XMALLOC(enc_valSz, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (enc_val == NULL)
- return MEMORY_E;
- /* sequence for ContentSpec & value */
- ret = SetOidValue(enc_val, enc_valSz, akid_cs, sizeof(akid_cs),
- input, length);
- if (ret > 0) {
- enc_valSz = ret;
- ret = SetOidValue(output, outSz, akid_oid, sizeof(akid_oid),
- enc_val, enc_valSz);
- }
- XFREE(enc_val, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- /* encode Key Usage, return total bytes written
- * RFC5280 : critical */
- static int SetKeyUsage(byte* output, word32 outSz, word16 input)
- {
- byte ku[5];
- int idx;
- static const byte keyusage_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x0f,
- 0x01, 0x01, 0xff, 0x04};
- if (output == NULL)
- return BAD_FUNC_ARG;
- idx = SetBitString16Bit(input, ku);
- return SetOidValue(output, outSz, keyusage_oid, sizeof(keyusage_oid),
- ku, idx);
- }
- static int SetOjectIdValue(byte* output, word32 outSz, int* idx,
- const byte* oid, word32 oidSz)
- {
- /* verify room */
- if (*idx + 2 + oidSz >= outSz)
- return ASN_PARSE_E;
- *idx += SetObjectId(oidSz, &output[*idx]);
- XMEMCPY(&output[*idx], oid, oidSz);
- *idx += oidSz;
- return 0;
- }
- /* encode Extended Key Usage (RFC 5280 4.2.1.12), return total bytes written */
- static int SetExtKeyUsage(byte* output, word32 outSz, byte input)
- {
- int idx = 0, oidListSz = 0, totalSz, ret = 0;
- static const byte extkeyusage_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x25 };
- if (output == NULL)
- return BAD_FUNC_ARG;
- /* Skip to OID List */
- totalSz = 2 + sizeof(extkeyusage_oid) + 4;
- idx = totalSz;
- /* Build OID List */
- /* If any set, then just use it */
- if (input & EXTKEYUSE_ANY) {
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageAnyOid, sizeof(extExtKeyUsageAnyOid));
- }
- else {
- if (input & EXTKEYUSE_SERVER_AUTH)
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageServerAuthOid, sizeof(extExtKeyUsageServerAuthOid));
- if (input & EXTKEYUSE_CLIENT_AUTH)
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageClientAuthOid, sizeof(extExtKeyUsageClientAuthOid));
- if (input & EXTKEYUSE_CODESIGN)
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageCodeSigningOid, sizeof(extExtKeyUsageCodeSigningOid));
- if (input & EXTKEYUSE_EMAILPROT)
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageEmailProtectOid, sizeof(extExtKeyUsageEmailProtectOid));
- if (input & EXTKEYUSE_TIMESTAMP)
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageTimestampOid, sizeof(extExtKeyUsageTimestampOid));
- if (input & EXTKEYUSE_OCSP_SIGN)
- ret |= SetOjectIdValue(output, outSz, &idx,
- extExtKeyUsageOcspSignOid, sizeof(extExtKeyUsageOcspSignOid));
- }
- if (ret != 0)
- return ASN_PARSE_E;
- /* Calculate Sizes */
- oidListSz = idx - totalSz;
- totalSz = idx - 2; /* exclude first seq/len (2) */
- /* 1. Seq + Total Len (2) */
- idx = SetSequence(totalSz, output);
- /* 2. Object ID (2) */
- XMEMCPY(&output[idx], extkeyusage_oid, sizeof(extkeyusage_oid));
- idx += sizeof(extkeyusage_oid);
- /* 3. Octect String (2) */
- idx += SetOctetString(totalSz - idx, &output[idx]);
- /* 4. Seq + OidListLen (2) */
- idx += SetSequence(oidListSz, &output[idx]);
- /* 5. Oid List (already set in-place above) */
- idx += oidListSz;
- return idx;
- }
- /* Encode OID string representation to ITU-T X.690 format */
- static int EncodePolicyOID(byte *out, word32 *outSz, const char *in, void* heap)
- {
- word32 val, idx = 0, nb_val;
- char *token, *str, *ptr;
- word32 len;
- if (out == NULL || outSz == NULL || *outSz < 2 || in == NULL)
- return BAD_FUNC_ARG;
- len = (word32)XSTRLEN(in);
- str = (char *)XMALLOC(len+1, heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (str == NULL)
- return MEMORY_E;
- XSTRNCPY(str, in, len);
- str[len] = 0x00;
- nb_val = 0;
- /* parse value, and set corresponding Policy OID value */
- token = XSTRTOK(str, ".", &ptr);
- while (token != NULL)
- {
- val = (word32)atoi(token);
- if (nb_val == 0) {
- if (val > 2) {
- XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ASN_OBJECT_ID_E;
- }
- out[idx] = (byte)(40 * val);
- }
- else if (nb_val == 1) {
- if (val > 127) {
- XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ASN_OBJECT_ID_E;
- }
- if (idx > *outSz) {
- XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return BUFFER_E;
- }
- out[idx++] += (byte)val;
- }
- else {
- word32 tb = 0, x;
- int i = 0;
- byte oid[MAX_OID_SZ];
- while (val >= 128) {
- x = val % 128;
- val /= 128;
- oid[i++] = (byte) (((tb++) ? 0x80 : 0) | x);
- }
- if ((idx+(word32)i) > *outSz) {
- XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return BUFFER_E;
- }
- oid[i] = (byte) (((tb++) ? 0x80 : 0) | val);
- /* push value in the right order */
- while (i >= 0)
- out[idx++] = oid[i--];
- }
- token = XSTRTOK(NULL, ".", &ptr);
- nb_val++;
- }
- *outSz = idx;
- XFREE(str, heap, DYNAMIC_TYPE_TMP_BUFFER);
- return 0;
- }
- /* encode Certificate Policies, return total bytes written
- * each input value must be ITU-T X.690 formatted : a.b.c...
- * input must be an array of values with a NULL terminated for the latest
- * RFC5280 : non-critical */
- static int SetCertificatePolicies(byte *output,
- word32 outputSz,
- char input[MAX_CERTPOL_NB][MAX_CERTPOL_SZ],
- word16 nb_certpol,
- void* heap)
- {
- byte oid[MAX_OID_SZ],
- der_oid[MAX_CERTPOL_NB][MAX_OID_SZ],
- out[MAX_CERTPOL_SZ];
- word32 oidSz;
- word32 outSz, i = 0, der_oidSz[MAX_CERTPOL_NB];
- int ret;
- static const byte certpol_oid[] = { 0x06, 0x03, 0x55, 0x1d, 0x20, 0x04 };
- static const byte oid_oid[] = { 0x06 };
- if (output == NULL || input == NULL || nb_certpol > MAX_CERTPOL_NB)
- return BAD_FUNC_ARG;
- for (i = 0; i < nb_certpol; i++) {
- oidSz = sizeof(oid);
- XMEMSET(oid, 0, oidSz);
- ret = EncodePolicyOID(oid, &oidSz, input[i], heap);
- if (ret != 0)
- return ret;
- /* compute sequence value for the oid */
- ret = SetOidValue(der_oid[i], MAX_OID_SZ, oid_oid,
- sizeof(oid_oid), oid, oidSz);
- if (ret <= 0)
- return ret;
- else
- der_oidSz[i] = (word32)ret;
- }
- /* concatenate oid, keep two byte for sequence/size of the created value */
- for (i = 0, outSz = 2; i < nb_certpol; i++) {
- XMEMCPY(out+outSz, der_oid[i], der_oidSz[i]);
- outSz += der_oidSz[i];
- }
- /* add sequence */
- ret = SetSequence(outSz-2, out);
- if (ret <= 0)
- return ret;
- /* add Policy OID to compute final value */
- return SetOidValue(output, outputSz, certpol_oid, sizeof(certpol_oid),
- out, outSz);
- }
- #endif /* WOLFSSL_CERT_EXT */
- #ifdef WOLFSSL_ALT_NAMES
- /* encode Alternative Names, return total bytes written */
- static int SetAltNames(byte *out, word32 outSz, byte *input, word32 length)
- {
- if (out == NULL || input == NULL)
- return BAD_FUNC_ARG;
- if (outSz < length)
- return BUFFER_E;
- /* Alternative Names come from certificate or computed by
- * external function, so already encoded. Just copy value */
- XMEMCPY(out, input, length);
- return length;
- }
- #endif /* WOLFSL_ALT_NAMES */
- /* encode CertName into output, return total bytes written */
- int SetName(byte* output, word32 outputSz, CertName* name)
- {
- int totalBytes = 0, i, idx;
- #ifdef WOLFSSL_SMALL_STACK
- EncodedName* names = NULL;
- #else
- EncodedName names[NAME_ENTRIES];
- #endif
- if (output == NULL || name == NULL)
- return BAD_FUNC_ARG;
- if (outputSz < 3)
- return BUFFER_E;
- #ifdef WOLFSSL_SMALL_STACK
- names = (EncodedName*)XMALLOC(sizeof(EncodedName) * NAME_ENTRIES, NULL,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (names == NULL)
- return MEMORY_E;
- #endif
- for (i = 0; i < NAME_ENTRIES; i++) {
- const char* nameStr = GetOneName(name, i);
- if (nameStr) {
- /* bottom up */
- byte firstLen[1 + MAX_LENGTH_SZ];
- byte secondLen[MAX_LENGTH_SZ];
- byte sequence[MAX_SEQ_SZ];
- byte set[MAX_SET_SZ];
- int email = i == (NAME_ENTRIES - 1) ? 1 : 0;
- int strLen = (int)XSTRLEN(nameStr);
- int thisLen = strLen;
- int firstSz, secondSz, seqSz, setSz;
- if (strLen == 0) { /* no user data for this item */
- names[i].used = 0;
- continue;
- }
- /* Restrict country code size */
- if (i == 0 && strLen != CTC_COUNTRY_SIZE) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ASN_COUNTRY_SIZE_E;
- }
- secondSz = SetLength(strLen, secondLen);
- thisLen += secondSz;
- if (email) {
- thisLen += EMAIL_JOINT_LEN;
- thisLen ++; /* id type */
- firstSz = SetObjectId(EMAIL_JOINT_LEN, firstLen);
- }
- else {
- thisLen++; /* str type */
- thisLen++; /* id type */
- thisLen += JOINT_LEN;
- firstSz = SetObjectId(JOINT_LEN + 1, firstLen);
- }
- thisLen += firstSz;
- seqSz = SetSequence(thisLen, sequence);
- thisLen += seqSz;
- setSz = SetSet(thisLen, set);
- thisLen += setSz;
- if (thisLen > (int)sizeof(names[i].encoded)) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BUFFER_E;
- }
- /* store it */
- idx = 0;
- /* set */
- XMEMCPY(names[i].encoded, set, setSz);
- idx += setSz;
- /* seq */
- XMEMCPY(names[i].encoded + idx, sequence, seqSz);
- idx += seqSz;
- /* asn object id */
- XMEMCPY(names[i].encoded + idx, firstLen, firstSz);
- idx += firstSz;
- if (email) {
- const byte EMAIL_OID[] = { 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d,
- 0x01, 0x09, 0x01, 0x16 };
- /* email joint id */
- XMEMCPY(names[i].encoded + idx, EMAIL_OID, sizeof(EMAIL_OID));
- idx += (int)sizeof(EMAIL_OID);
- }
- else {
- /* joint id */
- byte bType = GetNameId(i);
- names[i].encoded[idx++] = 0x55;
- names[i].encoded[idx++] = 0x04;
- /* id type */
- names[i].encoded[idx++] = bType;
- /* str type */
- names[i].encoded[idx++] = GetNameType(name, i);
- }
- /* second length */
- XMEMCPY(names[i].encoded + idx, secondLen, secondSz);
- idx += secondSz;
- /* str value */
- XMEMCPY(names[i].encoded + idx, nameStr, strLen);
- idx += strLen;
- totalBytes += idx;
- names[i].totalLen = idx;
- names[i].used = 1;
- }
- else
- names[i].used = 0;
- }
- /* header */
- idx = SetSequence(totalBytes, output);
- totalBytes += idx;
- if (totalBytes > ASN_NAME_MAX) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BUFFER_E;
- }
- for (i = 0; i < NAME_ENTRIES; i++) {
- if (names[i].used) {
- if (outputSz < (word32)(idx+names[i].totalLen)) {
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return BUFFER_E;
- }
- XMEMCPY(output + idx, names[i].encoded, names[i].totalLen);
- idx += names[i].totalLen;
- }
- }
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(names, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return totalBytes;
- }
- /* encode info from cert into DER encoded format */
- static int EncodeCert(Cert* cert, DerCert* der, RsaKey* rsaKey, ecc_key* eccKey,
- WC_RNG* rng, const byte* ntruKey, word16 ntruSz,
- ed25519_key* ed25519Key)
- {
- int ret;
- if (cert == NULL || der == NULL || rng == NULL)
- return BAD_FUNC_ARG;
- /* make sure at least one key type is provided */
- if (rsaKey == NULL && eccKey == NULL && ed25519Key == NULL && ntruKey == NULL)
- return PUBLIC_KEY_E;
- /* init */
- XMEMSET(der, 0, sizeof(DerCert));
- /* version */
- der->versionSz = SetMyVersion(cert->version, der->version, TRUE);
- /* serial number (must be positive) */
- if (cert->serialSz == 0) {
- /* generate random serial */
- cert->serialSz = CTC_SERIAL_SIZE;
- ret = wc_RNG_GenerateBlock(rng, cert->serial, cert->serialSz);
- if (ret != 0)
- return ret;
- }
- der->serialSz = SetSerialNumber(cert->serial, cert->serialSz, der->serial,
- CTC_SERIAL_SIZE);
- if (der->serialSz < 0)
- return der->serialSz;
- /* signature algo */
- der->sigAlgoSz = SetAlgoID(cert->sigType, der->sigAlgo, oidSigType, 0);
- if (der->sigAlgoSz <= 0)
- return ALGO_ID_E;
- /* public key */
- #ifndef NO_RSA
- if (cert->keyType == RSA_KEY) {
- if (rsaKey == NULL)
- return PUBLIC_KEY_E;
- der->publicKeySz = SetRsaPublicKey(der->publicKey, rsaKey,
- sizeof(der->publicKey), 1);
- }
- #endif
- #ifdef HAVE_ECC
- if (cert->keyType == ECC_KEY) {
- if (eccKey == NULL)
- return PUBLIC_KEY_E;
- der->publicKeySz = SetEccPublicKey(der->publicKey, eccKey, 1);
- }
- #endif
- #ifdef HAVE_ED25519
- if (cert->keyType == ED25519_KEY) {
- if (ed25519Key == NULL)
- return PUBLIC_KEY_E;
- der->publicKeySz = SetEd25519PublicKey(der->publicKey, ed25519Key, 1);
- }
- #endif
- #ifdef HAVE_NTRU
- if (cert->keyType == NTRU_KEY) {
- word32 rc;
- word16 encodedSz;
- if (ntruKey == NULL)
- return PUBLIC_KEY_E;
- rc = ntru_crypto_ntru_encrypt_publicKey2SubjectPublicKeyInfo(ntruSz,
- ntruKey, &encodedSz, NULL);
- if (rc != NTRU_OK)
- return PUBLIC_KEY_E;
- if (encodedSz > MAX_PUBLIC_KEY_SZ)
- return PUBLIC_KEY_E;
- rc = ntru_crypto_ntru_encrypt_publicKey2SubjectPublicKeyInfo(ntruSz,
- ntruKey, &encodedSz, der->publicKey);
- if (rc != NTRU_OK)
- return PUBLIC_KEY_E;
- der->publicKeySz = encodedSz;
- }
- #else
- (void)ntruSz;
- #endif /* HAVE_NTRU */
- if (der->publicKeySz <= 0)
- return PUBLIC_KEY_E;
- der->validitySz = 0;
- #ifdef WOLFSSL_ALT_NAMES
- /* date validity copy ? */
- if (cert->beforeDateSz && cert->afterDateSz) {
- der->validitySz = CopyValidity(der->validity, cert);
- if (der->validitySz <= 0)
- return DATE_E;
- }
- #endif
- /* date validity */
- if (der->validitySz == 0) {
- der->validitySz = SetValidity(der->validity, cert->daysValid);
- if (der->validitySz <= 0)
- return DATE_E;
- }
- /* subject name */
- der->subjectSz = SetName(der->subject, sizeof(der->subject), &cert->subject);
- if (der->subjectSz <= 0)
- return SUBJECT_E;
- /* issuer name */
- der->issuerSz = SetName(der->issuer, sizeof(der->issuer), cert->selfSigned ?
- &cert->subject : &cert->issuer);
- if (der->issuerSz <= 0)
- return ISSUER_E;
- /* set the extensions */
- der->extensionsSz = 0;
- /* CA */
- if (cert->isCA) {
- der->caSz = SetCa(der->ca, sizeof(der->ca));
- if (der->caSz <= 0)
- return CA_TRUE_E;
- der->extensionsSz += der->caSz;
- }
- else
- der->caSz = 0;
- #ifdef WOLFSSL_ALT_NAMES
- /* Alternative Name */
- if (cert->altNamesSz) {
- der->altNamesSz = SetAltNames(der->altNames, sizeof(der->altNames),
- cert->altNames, cert->altNamesSz);
- if (der->altNamesSz <= 0)
- return ALT_NAME_E;
- der->extensionsSz += der->altNamesSz;
- }
- else
- der->altNamesSz = 0;
- #endif
- #ifdef WOLFSSL_CERT_EXT
- /* SKID */
- if (cert->skidSz) {
- /* check the provided SKID size */
- if (cert->skidSz > (int)sizeof(der->skid))
- return SKID_E;
- /* Note: different skid buffers sizes for der (MAX_KID_SZ) and
- cert (CTC_MAX_SKID_SIZE). */
- der->skidSz = SetSKID(der->skid, sizeof(der->skid),
- cert->skid, cert->skidSz);
- if (der->skidSz <= 0)
- return SKID_E;
- der->extensionsSz += der->skidSz;
- }
- else
- der->skidSz = 0;
- /* AKID */
- if (cert->akidSz) {
- /* check the provided AKID size */
- if (cert->akidSz > (int)sizeof(der->akid))
- return AKID_E;
- der->akidSz = SetAKID(der->akid, sizeof(der->akid),
- cert->akid, cert->akidSz, cert->heap);
- if (der->akidSz <= 0)
- return AKID_E;
- der->extensionsSz += der->akidSz;
- }
- else
- der->akidSz = 0;
- /* Key Usage */
- if (cert->keyUsage != 0){
- der->keyUsageSz = SetKeyUsage(der->keyUsage, sizeof(der->keyUsage),
- cert->keyUsage);
- if (der->keyUsageSz <= 0)
- return KEYUSAGE_E;
- der->extensionsSz += der->keyUsageSz;
- }
- else
- der->keyUsageSz = 0;
- /* Extended Key Usage */
- if (cert->extKeyUsage != 0){
- der->extKeyUsageSz = SetExtKeyUsage(der->extKeyUsage,
- sizeof(der->extKeyUsage), cert->extKeyUsage);
- if (der->extKeyUsageSz <= 0)
- return EXTKEYUSAGE_E;
- der->extensionsSz += der->extKeyUsageSz;
- }
- else
- der->extKeyUsageSz = 0;
- /* Certificate Policies */
- if (cert->certPoliciesNb != 0) {
- der->certPoliciesSz = SetCertificatePolicies(der->certPolicies,
- sizeof(der->certPolicies),
- cert->certPolicies,
- cert->certPoliciesNb,
- cert->heap);
- if (der->certPoliciesSz <= 0)
- return CERTPOLICIES_E;
- der->extensionsSz += der->certPoliciesSz;
- }
- else
- der->certPoliciesSz = 0;
- #endif /* WOLFSSL_CERT_EXT */
- /* put extensions */
- if (der->extensionsSz > 0) {
- /* put the start of extensions sequence (ID, Size) */
- der->extensionsSz = SetExtensionsHeader(der->extensions,
- sizeof(der->extensions),
- der->extensionsSz);
- if (der->extensionsSz <= 0)
- return EXTENSIONS_E;
- /* put CA */
- if (der->caSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->ca, der->caSz);
- if (ret == 0)
- return EXTENSIONS_E;
- }
- #ifdef WOLFSSL_ALT_NAMES
- /* put Alternative Names */
- if (der->altNamesSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->altNames, der->altNamesSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
- #endif
- #ifdef WOLFSSL_CERT_EXT
- /* put SKID */
- if (der->skidSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->skid, der->skidSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
- /* put AKID */
- if (der->akidSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->akid, der->akidSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
- /* put KeyUsage */
- if (der->keyUsageSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->keyUsage, der->keyUsageSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
- /* put ExtendedKeyUsage */
- if (der->extKeyUsageSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->extKeyUsage, der->extKeyUsageSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
- /* put Certificate Policies */
- if (der->certPoliciesSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->certPolicies, der->certPoliciesSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
- #endif /* WOLFSSL_CERT_EXT */
- }
- der->total = der->versionSz + der->serialSz + der->sigAlgoSz +
- der->publicKeySz + der->validitySz + der->subjectSz + der->issuerSz +
- der->extensionsSz;
- return 0;
- }
- /* write DER encoded cert to buffer, size already checked */
- static int WriteCertBody(DerCert* der, byte* buffer)
- {
- int idx;
- /* signed part header */
- idx = SetSequence(der->total, buffer);
- /* version */
- XMEMCPY(buffer + idx, der->version, der->versionSz);
- idx += der->versionSz;
- /* serial */
- XMEMCPY(buffer + idx, der->serial, der->serialSz);
- idx += der->serialSz;
- /* sig algo */
- XMEMCPY(buffer + idx, der->sigAlgo, der->sigAlgoSz);
- idx += der->sigAlgoSz;
- /* issuer */
- XMEMCPY(buffer + idx, der->issuer, der->issuerSz);
- idx += der->issuerSz;
- /* validity */
- XMEMCPY(buffer + idx, der->validity, der->validitySz);
- idx += der->validitySz;
- /* subject */
- XMEMCPY(buffer + idx, der->subject, der->subjectSz);
- idx += der->subjectSz;
- /* public key */
- XMEMCPY(buffer + idx, der->publicKey, der->publicKeySz);
- idx += der->publicKeySz;
- if (der->extensionsSz) {
- /* extensions */
- XMEMCPY(buffer + idx, der->extensions, min(der->extensionsSz,
- (int)sizeof(der->extensions)));
- idx += der->extensionsSz;
- }
- return idx;
- }
- /* Make RSA signature from buffer (sz), write to sig (sigSz) */
- static int MakeSignature(CertSignCtx* certSignCtx, const byte* buffer, int sz,
- byte* sig, int sigSz, RsaKey* rsaKey, ecc_key* eccKey,
- ed25519_key* ed25519Key, WC_RNG* rng, int sigAlgoType, void* heap)
- {
- int digestSz = 0, typeH = 0, ret = 0;
- (void)digestSz;
- (void)typeH;
- (void)buffer;
- (void)sz;
- (void)sig;
- (void)sigSz;
- (void)rsaKey;
- (void)eccKey;
- (void)ed25519Key;
- (void)rng;
- switch (certSignCtx->state) {
- case CERTSIGN_STATE_BEGIN:
- case CERTSIGN_STATE_DIGEST:
- certSignCtx->state = CERTSIGN_STATE_DIGEST;
- certSignCtx->digest = (byte*)XMALLOC(WC_MAX_DIGEST_SIZE, heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (certSignCtx->digest == NULL) {
- ret = MEMORY_E; goto exit_ms;
- }
- ret = HashForSignature(buffer, sz, sigAlgoType, certSignCtx->digest,
- &typeH, &digestSz, 0);
- /* set next state, since WC_PENDING rentry for these are not "call again" */
- certSignCtx->state = CERTSIGN_STATE_ENCODE;
- if (ret != 0) {
- goto exit_ms;
- }
- FALL_THROUGH;
- case CERTSIGN_STATE_ENCODE:
- #ifndef NO_RSA
- if (rsaKey) {
- certSignCtx->encSig = (byte*)XMALLOC(MAX_DER_DIGEST_SZ, heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (certSignCtx->encSig == NULL) {
- ret = MEMORY_E; goto exit_ms;
- }
- /* signature */
- certSignCtx->encSigSz = wc_EncodeSignature(certSignCtx->encSig,
- certSignCtx->digest, digestSz, typeH);
- }
- #endif /* !NO_RSA */
- FALL_THROUGH;
- case CERTSIGN_STATE_DO:
- certSignCtx->state = CERTSIGN_STATE_DO;
- ret = ALGO_ID_E; /* default to error */
- #ifndef NO_RSA
- if (rsaKey) {
- /* signature */
- ret = wc_RsaSSL_Sign(certSignCtx->encSig, certSignCtx->encSigSz,
- sig, sigSz, rsaKey, rng);
- }
- #endif /* !NO_RSA */
- #ifdef HAVE_ECC
- if (!rsaKey && eccKey) {
- word32 outSz = sigSz;
- ret = wc_ecc_sign_hash(certSignCtx->digest, digestSz,
- sig, &outSz, rng, eccKey);
- if (ret == 0)
- ret = outSz;
- }
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- if (!rsaKey && !eccKey && ed25519Key) {
- word32 outSz = sigSz;
- ret = wc_ed25519_sign_msg(buffer, sz, sig, &outSz, ed25519Key);
- if (ret == 0)
- ret = outSz;
- }
- #endif /* HAVE_ECC */
- break;
- }
- exit_ms:
- if (ret == WC_PENDING_E) {
- return ret;
- }
- #ifndef NO_RSA
- if (rsaKey) {
- XFREE(certSignCtx->encSig, heap, DYNAMIC_TYPE_TMP_BUFFER);
- }
- #endif /* !NO_RSA */
- XFREE(certSignCtx->digest, heap, DYNAMIC_TYPE_TMP_BUFFER);
- certSignCtx->digest = NULL;
- /* reset state */
- certSignCtx->state = CERTSIGN_STATE_BEGIN;
- return ret;
- }
- /* add signature to end of buffer, size of buffer assumed checked, return
- new length */
- static int AddSignature(byte* buffer, int bodySz, const byte* sig, int sigSz,
- int sigAlgoType)
- {
- byte seq[MAX_SEQ_SZ];
- int idx = bodySz, seqSz;
- /* algo */
- idx += SetAlgoID(sigAlgoType, buffer + idx, oidSigType, 0);
- /* bit string */
- idx += SetBitString(sigSz, 0, buffer + idx);
- /* signature */
- XMEMCPY(buffer + idx, sig, sigSz);
- idx += sigSz;
- /* make room for overall header */
- seqSz = SetSequence(idx, seq);
- XMEMMOVE(buffer + seqSz, buffer, idx);
- XMEMCPY(buffer, seq, seqSz);
- return idx + seqSz;
- }
- /* Make an x509 Certificate v3 any key type from cert input, write to buffer */
- static int MakeAnyCert(Cert* cert, byte* derBuffer, word32 derSz,
- RsaKey* rsaKey, ecc_key* eccKey, WC_RNG* rng,
- const byte* ntruKey, word16 ntruSz,
- ed25519_key* ed25519Key)
- {
- int ret;
- #ifdef WOLFSSL_SMALL_STACK
- DerCert* der;
- #else
- DerCert der[1];
- #endif
- cert->keyType = eccKey ? ECC_KEY : (rsaKey ? RSA_KEY :
- (ed25519Key ? ED25519_KEY : NTRU_KEY));
- #ifdef WOLFSSL_SMALL_STACK
- der = (DerCert*)XMALLOC(sizeof(DerCert), NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (der == NULL)
- return MEMORY_E;
- #endif
- ret = EncodeCert(cert, der, rsaKey, eccKey, rng, ntruKey, ntruSz,
- ed25519Key);
- if (ret == 0) {
- if (der->total + MAX_SEQ_SZ * 2 > (int)derSz)
- ret = BUFFER_E;
- else
- ret = cert->bodySz = WriteCertBody(der, derBuffer);
- }
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(der, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- /* Make an x509 Certificate v3 RSA or ECC from cert input, write to buffer */
- int wc_MakeCert_ex(Cert* cert, byte* derBuffer, word32 derSz, int keyType,
- void* key, WC_RNG* rng)
- {
- RsaKey* rsaKey = NULL;
- ecc_key* eccKey = NULL;
- ed25519_key* ed25519Key = NULL;
- if (keyType == RSA_TYPE)
- rsaKey = (RsaKey*)key;
- else if (keyType == ECC_TYPE)
- eccKey = (ecc_key*)key;
- else if (keyType == ED25519_TYPE)
- ed25519Key = (ed25519_key*)key;
- return MakeAnyCert(cert, derBuffer, derSz, rsaKey, eccKey, rng, NULL, 0,
- ed25519Key);
- }
- /* Make an x509 Certificate v3 RSA or ECC from cert input, write to buffer */
- int wc_MakeCert(Cert* cert, byte* derBuffer, word32 derSz, RsaKey* rsaKey,
- ecc_key* eccKey, WC_RNG* rng)
- {
- return MakeAnyCert(cert, derBuffer, derSz, rsaKey, eccKey, rng, NULL, 0,
- NULL);
- }
- #ifdef HAVE_NTRU
- int wc_MakeNtruCert(Cert* cert, byte* derBuffer, word32 derSz,
- const byte* ntruKey, word16 keySz, WC_RNG* rng)
- {
- return MakeAnyCert(cert, derBuffer, derSz, NULL, NULL, rng, ntruKey, keySz);
- }
- #endif /* HAVE_NTRU */
- #ifdef WOLFSSL_CERT_REQ
- static int SetReqAttrib(byte* output, char* pw, int extSz)
- {
- static const byte cpOid[] =
- { ASN_OBJECT_ID, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01,
- 0x09, 0x07 };
- static const byte erOid[] =
- { ASN_OBJECT_ID, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01,
- 0x09, 0x0e };
- int sz = 0; /* overall size */
- int cpSz = 0; /* Challenge Password section size */
- int cpSeqSz = 0;
- int cpSetSz = 0;
- int cpStrSz = 0;
- int pwSz = 0;
- int erSz = 0; /* Extension Request section size */
- int erSeqSz = 0;
- int erSetSz = 0;
- byte cpSeq[MAX_SEQ_SZ];
- byte cpSet[MAX_SET_SZ];
- byte cpStr[MAX_PRSTR_SZ];
- byte erSeq[MAX_SEQ_SZ];
- byte erSet[MAX_SET_SZ];
- output[0] = 0xa0;
- sz++;
- if (pw && pw[0]) {
- pwSz = (int)XSTRLEN(pw);
- cpStrSz = SetUTF8String(pwSz, cpStr);
- cpSetSz = SetSet(cpStrSz + pwSz, cpSet);
- cpSeqSz = SetSequence(sizeof(cpOid) + cpSetSz + cpStrSz + pwSz, cpSeq);
- cpSz = cpSeqSz + sizeof(cpOid) + cpSetSz + cpStrSz + pwSz;
- }
- if (extSz) {
- erSetSz = SetSet(extSz, erSet);
- erSeqSz = SetSequence(erSetSz + sizeof(erOid) + extSz, erSeq);
- erSz = extSz + erSetSz + erSeqSz + sizeof(erOid);
- }
- /* Put the pieces together. */
- sz += SetLength(cpSz + erSz, &output[sz]);
- if (cpSz) {
- XMEMCPY(&output[sz], cpSeq, cpSeqSz);
- sz += cpSeqSz;
- XMEMCPY(&output[sz], cpOid, sizeof(cpOid));
- sz += sizeof(cpOid);
- XMEMCPY(&output[sz], cpSet, cpSetSz);
- sz += cpSetSz;
- XMEMCPY(&output[sz], cpStr, cpStrSz);
- sz += cpStrSz;
- XMEMCPY(&output[sz], pw, pwSz);
- sz += pwSz;
- }
- if (erSz) {
- XMEMCPY(&output[sz], erSeq, erSeqSz);
- sz += erSeqSz;
- XMEMCPY(&output[sz], erOid, sizeof(erOid));
- sz += sizeof(erOid);
- XMEMCPY(&output[sz], erSet, erSetSz);
- sz += erSetSz;
- /* The actual extension data will be tacked onto the output later. */
- }
- return sz;
- }
- /* encode info from cert into DER encoded format */
- static int EncodeCertReq(Cert* cert, DerCert* der, RsaKey* rsaKey,
- ecc_key* eccKey, ed25519_key* ed25519Key)
- {
- (void)eccKey;
- (void)ed25519Key;
- if (cert == NULL || der == NULL)
- return BAD_FUNC_ARG;
- if (rsaKey == NULL && eccKey == NULL && ed25519Key == NULL)
- return PUBLIC_KEY_E;
- /* init */
- XMEMSET(der, 0, sizeof(DerCert));
- /* version */
- der->versionSz = SetMyVersion(cert->version, der->version, FALSE);
- /* subject name */
- der->subjectSz = SetName(der->subject, sizeof(der->subject), &cert->subject);
- if (der->subjectSz <= 0)
- return SUBJECT_E;
- /* public key */
- #ifndef NO_RSA
- if (cert->keyType == RSA_KEY) {
- if (rsaKey == NULL)
- return PUBLIC_KEY_E;
- der->publicKeySz = SetRsaPublicKey(der->publicKey, rsaKey,
- sizeof(der->publicKey), 1);
- }
- #endif
- #ifdef HAVE_ECC
- if (cert->keyType == ECC_KEY) {
- der->publicKeySz = SetEccPublicKey(der->publicKey, eccKey, 1);
- }
- #endif
- #ifdef HAVE_ED25519
- if (cert->keyType == ED25519_KEY) {
- if (ed25519Key == NULL)
- return PUBLIC_KEY_E;
- der->publicKeySz = SetEd25519PublicKey(der->publicKey, ed25519Key, 1);
- }
- #endif
- if (der->publicKeySz <= 0)
- return PUBLIC_KEY_E;
- /* set the extensions */
- der->extensionsSz = 0;
- /* CA */
- if (cert->isCA) {
- der->caSz = SetCa(der->ca, sizeof(der->ca));
- if (der->caSz <= 0)
- return CA_TRUE_E;
- der->extensionsSz += der->caSz;
- }
- else
- der->caSz = 0;
- #ifdef WOLFSSL_CERT_EXT
- /* SKID */
- if (cert->skidSz) {
- /* check the provided SKID size */
- if (cert->skidSz > (int)sizeof(der->skid))
- return SKID_E;
- der->skidSz = SetSKID(der->skid, sizeof(der->skid),
- cert->skid, cert->skidSz);
- if (der->skidSz <= 0)
- return SKID_E;
- der->extensionsSz += der->skidSz;
- }
- else
- der->skidSz = 0;
- /* Key Usage */
- if (cert->keyUsage != 0){
- der->keyUsageSz = SetKeyUsage(der->keyUsage, sizeof(der->keyUsage),
- cert->keyUsage);
- if (der->keyUsageSz <= 0)
- return KEYUSAGE_E;
- der->extensionsSz += der->keyUsageSz;
- }
- else
- der->keyUsageSz = 0;
- /* Extended Key Usage */
- if (cert->extKeyUsage != 0){
- der->extKeyUsageSz = SetExtKeyUsage(der->extKeyUsage,
- sizeof(der->extKeyUsage), cert->extKeyUsage);
- if (der->extKeyUsageSz <= 0)
- return EXTKEYUSAGE_E;
- der->extensionsSz += der->extKeyUsageSz;
- }
- else
- der->extKeyUsageSz = 0;
- #endif /* WOLFSSL_CERT_EXT */
- /* put extensions */
- if (der->extensionsSz > 0) {
- int ret;
- /* put the start of sequence (ID, Size) */
- der->extensionsSz = SetSequence(der->extensionsSz, der->extensions);
- if (der->extensionsSz <= 0)
- return EXTENSIONS_E;
- /* put CA */
- if (der->caSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->ca, der->caSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
- #ifdef WOLFSSL_CERT_EXT
- /* put SKID */
- if (der->skidSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->skid, der->skidSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
- /* put AKID */
- if (der->akidSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->akid, der->akidSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
- /* put KeyUsage */
- if (der->keyUsageSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->keyUsage, der->keyUsageSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
- /* put ExtendedKeyUsage */
- if (der->extKeyUsageSz) {
- ret = SetExtensions(der->extensions, sizeof(der->extensions),
- &der->extensionsSz,
- der->extKeyUsage, der->extKeyUsageSz);
- if (ret <= 0)
- return EXTENSIONS_E;
- }
- #endif /* WOLFSSL_CERT_EXT */
- }
- der->attribSz = SetReqAttrib(der->attrib,
- cert->challengePw, der->extensionsSz);
- if (der->attribSz <= 0)
- return REQ_ATTRIBUTE_E;
- der->total = der->versionSz + der->subjectSz + der->publicKeySz +
- der->extensionsSz + der->attribSz;
- return 0;
- }
- /* write DER encoded cert req to buffer, size already checked */
- static int WriteCertReqBody(DerCert* der, byte* buffer)
- {
- int idx;
- /* signed part header */
- idx = SetSequence(der->total, buffer);
- /* version */
- XMEMCPY(buffer + idx, der->version, der->versionSz);
- idx += der->versionSz;
- /* subject */
- XMEMCPY(buffer + idx, der->subject, der->subjectSz);
- idx += der->subjectSz;
- /* public key */
- XMEMCPY(buffer + idx, der->publicKey, der->publicKeySz);
- idx += der->publicKeySz;
- /* attributes */
- XMEMCPY(buffer + idx, der->attrib, der->attribSz);
- idx += der->attribSz;
- /* extensions */
- if (der->extensionsSz) {
- XMEMCPY(buffer + idx, der->extensions, min(der->extensionsSz,
- (int)sizeof(der->extensions)));
- idx += der->extensionsSz;
- }
- return idx;
- }
- static int MakeCertReq(Cert* cert, byte* derBuffer, word32 derSz,
- RsaKey* rsaKey, ecc_key* eccKey, ed25519_key* ed25519Key)
- {
- int ret;
- #ifdef WOLFSSL_SMALL_STACK
- DerCert* der;
- #else
- DerCert der[1];
- #endif
- cert->keyType = eccKey ? ECC_KEY : (ed25519Key ? ED25519_KEY : RSA_KEY);
- #ifdef WOLFSSL_SMALL_STACK
- der = (DerCert*)XMALLOC(sizeof(DerCert), NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (der == NULL)
- return MEMORY_E;
- #endif
- ret = EncodeCertReq(cert, der, rsaKey, eccKey, ed25519Key);
- if (ret == 0) {
- if (der->total + MAX_SEQ_SZ * 2 > (int)derSz)
- ret = BUFFER_E;
- else
- ret = cert->bodySz = WriteCertReqBody(der, derBuffer);
- }
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(der, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- int wc_MakeCertReq_ex(Cert* cert, byte* derBuffer, word32 derSz, int keyType,
- void* key)
- {
- RsaKey* rsaKey = NULL;
- ecc_key* eccKey = NULL;
- ed25519_key* ed25519Key = NULL;
- if (keyType == RSA_TYPE)
- rsaKey = (RsaKey*)key;
- else if (keyType == ECC_TYPE)
- eccKey = (ecc_key*)key;
- else if (keyType == ED25519_TYPE)
- ed25519Key = (ed25519_key*)key;
- return MakeCertReq(cert, derBuffer, derSz, rsaKey, eccKey, ed25519Key);
- }
- int wc_MakeCertReq(Cert* cert, byte* derBuffer, word32 derSz,
- RsaKey* rsaKey, ecc_key* eccKey)
- {
- return MakeCertReq(cert, derBuffer, derSz, rsaKey, eccKey, NULL);
- }
- #endif /* WOLFSSL_CERT_REQ */
- static int SignCert(int requestSz, int sType, byte* buffer, word32 buffSz,
- RsaKey* rsaKey, ecc_key* eccKey, ed25519_key* ed25519Key,
- WC_RNG* rng)
- {
- int sigSz = 0;
- void* heap = NULL;
- CertSignCtx* certSignCtx = NULL;
- #ifndef WOLFSSL_ASYNC_CRYPT
- CertSignCtx certSignCtx_lcl;
- certSignCtx = &certSignCtx_lcl;
- XMEMSET(certSignCtx, 0, sizeof(CertSignCtx));
- #endif
- if (requestSz < 0)
- return requestSz;
- /* locate ctx */
- if (rsaKey) {
- #ifndef NO_RSA
- #ifdef WOLFSSL_ASYNC_CRYPT
- certSignCtx = &rsaKey->certSignCtx;
- #endif
- heap = rsaKey->heap;
- #else
- return NOT_COMPILED_IN;
- #endif /* NO_RSA */
- }
- else if (eccKey) {
- #ifdef HAVE_ECC
- #ifdef WOLFSSL_ASYNC_CRYPT
- certSignCtx = &eccKey->certSignCtx;
- #endif
- heap = eccKey->heap;
- #else
- return NOT_COMPILED_IN;
- #endif /* HAVE_ECC */
- }
- #ifdef WOLFSSL_ASYNC_CRYPT
- if (certSignCtx == NULL) {
- return BAD_FUNC_ARG;
- }
- #endif
- if (certSignCtx->sig == NULL) {
- certSignCtx->sig = (byte*)XMALLOC(MAX_ENCODED_SIG_SZ, heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (certSignCtx->sig == NULL)
- return MEMORY_E;
- }
- sigSz = MakeSignature(certSignCtx, buffer, requestSz, certSignCtx->sig,
- MAX_ENCODED_SIG_SZ, rsaKey, eccKey, ed25519Key, rng, sType, heap);
- if (sigSz == WC_PENDING_E)
- return sigSz;
- if (sigSz >= 0) {
- if (requestSz + MAX_SEQ_SZ * 2 + sigSz > (int)buffSz)
- sigSz = BUFFER_E;
- else
- sigSz = AddSignature(buffer, requestSz, certSignCtx->sig, sigSz, sType);
- }
- XFREE(certSignCtx->sig, heap, DYNAMIC_TYPE_TMP_BUFFER);
- certSignCtx->sig = NULL;
- return sigSz;
- }
- int wc_SignCert_ex(int requestSz, int sType, byte* buffer, word32 buffSz,
- int keyType, void* key, WC_RNG* rng)
- {
- RsaKey* rsaKey = NULL;
- ecc_key* eccKey = NULL;
- ed25519_key* ed25519Key = NULL;
- if (keyType == RSA_TYPE)
- rsaKey = (RsaKey*)key;
- else if (keyType == ECC_TYPE)
- eccKey = (ecc_key*)key;
- else if (keyType == ED25519_TYPE)
- ed25519Key = (ed25519_key*)key;
- return SignCert(requestSz, sType, buffer, buffSz, rsaKey, eccKey,
- ed25519Key, rng);
- }
- int wc_SignCert(int requestSz, int sType, byte* buffer, word32 buffSz,
- RsaKey* rsaKey, ecc_key* eccKey, WC_RNG* rng)
- {
- return SignCert(requestSz, sType, buffer, buffSz, rsaKey, eccKey, NULL,
- rng);
- }
- int wc_MakeSelfCert(Cert* cert, byte* buffer, word32 buffSz,
- RsaKey* key, WC_RNG* rng)
- {
- int ret;
- ret = wc_MakeCert(cert, buffer, buffSz, key, NULL, rng);
- if (ret < 0)
- return ret;
- return wc_SignCert(cert->bodySz, cert->sigType,
- buffer, buffSz, key, NULL, rng);
- }
- #ifdef WOLFSSL_CERT_EXT
- /* Set KID from public key */
- static int SetKeyIdFromPublicKey(Cert *cert, RsaKey *rsakey, ecc_key *eckey,
- byte *ntruKey, word16 ntruKeySz,
- ed25519_key* ed25519Key, int kid_type)
- {
- byte *buffer;
- int bufferSz, ret;
- if (cert == NULL ||
- (rsakey == NULL && eckey == NULL && ntruKey == NULL &&
- ed25519Key == NULL) ||
- (kid_type != SKID_TYPE && kid_type != AKID_TYPE))
- return BAD_FUNC_ARG;
- buffer = (byte *)XMALLOC(MAX_PUBLIC_KEY_SZ, cert->heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (buffer == NULL)
- return MEMORY_E;
- /* Public Key */
- bufferSz = -1;
- #ifndef NO_RSA
- /* RSA public key */
- if (rsakey != NULL)
- bufferSz = SetRsaPublicKey(buffer, rsakey, MAX_PUBLIC_KEY_SZ, 0);
- #endif
- #ifdef HAVE_ECC
- /* ECC public key */
- if (eckey != NULL)
- bufferSz = SetEccPublicKey(buffer, eckey, 0);
- #endif
- #ifdef HAVE_NTRU
- /* NTRU public key */
- if (ntruKey != NULL) {
- bufferSz = MAX_PUBLIC_KEY_SZ;
- ret = ntru_crypto_ntru_encrypt_publicKey2SubjectPublicKeyInfo(
- ntruKeySz, ntruKey, (word16 *)(&bufferSz), buffer);
- if (ret != NTRU_OK)
- bufferSz = -1;
- }
- #else
- (void)ntruKeySz;
- #endif
- #ifdef HAVE_ED25519
- /* ED25519 public key */
- if (ed25519Key != NULL)
- bufferSz = SetEd25519PublicKey(buffer, ed25519Key, 0);
- #endif
- if (bufferSz <= 0) {
- XFREE(buffer, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return PUBLIC_KEY_E;
- }
- /* Compute SKID by hashing public key */
- #ifdef NO_SHA
- if (kid_type == SKID_TYPE) {
- ret = wc_Sha256Hash(buffer, bufferSz, cert->skid);
- cert->skidSz = WC_SHA256_DIGEST_SIZE;
- }
- else if (kid_type == AKID_TYPE) {
- ret = wc_Sha256Hash(buffer, bufferSz, cert->akid);
- cert->akidSz = WC_SHA256_DIGEST_SIZE;
- }
- else
- ret = BAD_FUNC_ARG;
- #else /* NO_SHA */
- if (kid_type == SKID_TYPE) {
- ret = wc_ShaHash(buffer, bufferSz, cert->skid);
- cert->skidSz = WC_SHA_DIGEST_SIZE;
- }
- else if (kid_type == AKID_TYPE) {
- ret = wc_ShaHash(buffer, bufferSz, cert->akid);
- cert->akidSz = WC_SHA_DIGEST_SIZE;
- }
- else
- ret = BAD_FUNC_ARG;
- #endif /* NO_SHA */
- XFREE(buffer, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- int wc_SetSubjectKeyIdFromPublicKey_ex(Cert *cert, int keyType, void* key)
- {
- RsaKey* rsaKey = NULL;
- ecc_key* eccKey = NULL;
- ed25519_key* ed25519Key = NULL;
- if (keyType == RSA_TYPE)
- rsaKey = (RsaKey*)key;
- else if (keyType == ECC_TYPE)
- eccKey = (ecc_key*)key;
- else if (keyType == ED25519_TYPE)
- ed25519Key = (ed25519_key*)key;
- return SetKeyIdFromPublicKey(cert, rsaKey, eccKey, NULL, 0, ed25519Key,
- SKID_TYPE);
- }
- /* Set SKID from RSA or ECC public key */
- int wc_SetSubjectKeyIdFromPublicKey(Cert *cert, RsaKey *rsakey, ecc_key *eckey)
- {
- return SetKeyIdFromPublicKey(cert, rsakey, eckey, NULL, 0, NULL, SKID_TYPE);
- }
- #ifdef HAVE_NTRU
- /* Set SKID from NTRU public key */
- int wc_SetSubjectKeyIdFromNtruPublicKey(Cert *cert,
- byte *ntruKey, word16 ntruKeySz)
- {
- return SetKeyIdFromPublicKey(cert, NULL,NULL,ntruKey, ntruKeySz, NULL,
- SKID_TYPE);
- }
- #endif
- int wc_SetAuthKeyIdFromPublicKey_ex(Cert *cert, int keyType, void* key)
- {
- RsaKey* rsaKey = NULL;
- ecc_key* eccKey = NULL;
- ed25519_key* ed25519Key = NULL;
- if (keyType == RSA_TYPE)
- rsaKey = (RsaKey*)key;
- else if (keyType == ECC_TYPE)
- eccKey = (ecc_key*)key;
- else if (keyType == ED25519_TYPE)
- ed25519Key = (ed25519_key*)key;
- return SetKeyIdFromPublicKey(cert, rsaKey, eccKey, NULL, 0, ed25519Key,
- AKID_TYPE);
- }
- /* Set SKID from RSA or ECC public key */
- int wc_SetAuthKeyIdFromPublicKey(Cert *cert, RsaKey *rsakey, ecc_key *eckey)
- {
- return SetKeyIdFromPublicKey(cert, rsakey, eckey, NULL, 0, NULL, AKID_TYPE);
- }
- #ifndef NO_FILESYSTEM
- /* Set SKID from public key file in PEM */
- int wc_SetSubjectKeyId(Cert *cert, const char* file)
- {
- int ret, derSz;
- byte* der;
- word32 idx;
- RsaKey *rsakey = NULL;
- ecc_key *eckey = NULL;
- if (cert == NULL || file == NULL)
- return BAD_FUNC_ARG;
- der = (byte*)XMALLOC(MAX_PUBLIC_KEY_SZ, cert->heap, DYNAMIC_TYPE_CERT);
- if (der == NULL) {
- WOLFSSL_MSG("wc_SetSubjectKeyId memory Problem");
- return MEMORY_E;
- }
- derSz = wolfSSL_PemPubKeyToDer(file, der, MAX_PUBLIC_KEY_SZ);
- if (derSz <= 0)
- {
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return derSz;
- }
- /* Load PubKey in internal structure */
- #ifndef NO_RSA
- rsakey = (RsaKey*) XMALLOC(sizeof(RsaKey), cert->heap, DYNAMIC_TYPE_RSA);
- if (rsakey == NULL) {
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return MEMORY_E;
- }
- if (wc_InitRsaKey(rsakey, cert->heap) != 0) {
- WOLFSSL_MSG("wc_InitRsaKey failure");
- XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return MEMORY_E;
- }
- idx = 0;
- ret = wc_RsaPublicKeyDecode(der, &idx, rsakey, derSz);
- if (ret != 0)
- #endif
- {
- #ifndef NO_RSA
- WOLFSSL_MSG("wc_RsaPublicKeyDecode failed");
- wc_FreeRsaKey(rsakey);
- XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
- rsakey = NULL;
- #endif
- #ifdef HAVE_ECC
- /* Check to load ecc public key */
- eckey = (ecc_key*) XMALLOC(sizeof(ecc_key), cert->heap,
- DYNAMIC_TYPE_ECC);
- if (eckey == NULL) {
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return MEMORY_E;
- }
- if (wc_ecc_init(eckey) != 0) {
- WOLFSSL_MSG("wc_ecc_init failure");
- wc_ecc_free(eckey);
- XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return MEMORY_E;
- }
- idx = 0;
- ret = wc_EccPublicKeyDecode(der, &idx, eckey, derSz);
- if (ret != 0) {
- WOLFSSL_MSG("wc_EccPublicKeyDecode failed");
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- wc_ecc_free(eckey);
- return PUBLIC_KEY_E;
- }
- #else
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return PUBLIC_KEY_E;
- #endif /* HAVE_ECC */
- }
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- ret = wc_SetSubjectKeyIdFromPublicKey(cert, rsakey, eckey);
- #ifndef NO_RSA
- wc_FreeRsaKey(rsakey);
- XFREE(rsakey, cert->heap, DYNAMIC_TYPE_RSA);
- #endif
- #ifdef HAVE_ECC
- wc_ecc_free(eckey);
- XFREE(eckey, cert->heap, DYNAMIC_TYPE_ECC);
- #endif
- return ret;
- }
- #endif /* NO_FILESYSTEM */
- /* Set AKID from certificate contains in buffer (DER encoded) */
- int wc_SetAuthKeyIdFromCert(Cert *cert, const byte *der, int derSz)
- {
- int ret;
- #ifdef WOLFSSL_SMALL_STACK
- DecodedCert* decoded;
- #else
- DecodedCert decoded[1];
- #endif
- if (cert == NULL || der == NULL || derSz <= 0)
- return BAD_FUNC_ARG;
- #ifdef WOLFSSL_SMALL_STACK
- decoded = (DecodedCert*)XMALLOC(sizeof(DecodedCert),
- NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (decoded == NULL)
- return MEMORY_E;
- #endif
- /* decode certificate and get SKID that will be AKID of current cert */
- InitDecodedCert(decoded, (byte*)der, derSz, NULL);
- ret = ParseCert(decoded, CERT_TYPE, NO_VERIFY, 0);
- if (ret != 0) {
- FreeDecodedCert(decoded);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- /* Subject Key Id not found !! */
- if (decoded->extSubjKeyIdSet == 0) {
- FreeDecodedCert(decoded);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ASN_NO_SKID;
- }
- /* SKID invalid size */
- if (sizeof(cert->akid) < sizeof(decoded->extSubjKeyId)) {
- FreeDecodedCert(decoded);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return MEMORY_E;
- }
- /* Put the SKID of CA to AKID of certificate */
- XMEMCPY(cert->akid, decoded->extSubjKeyId, KEYID_SIZE);
- cert->akidSz = KEYID_SIZE;
- FreeDecodedCert(decoded);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return 0;
- }
- #ifndef NO_FILESYSTEM
- /* Set AKID from certificate file in PEM */
- int wc_SetAuthKeyId(Cert *cert, const char* file)
- {
- int ret;
- int derSz;
- byte* der;
- if (cert == NULL || file == NULL)
- return BAD_FUNC_ARG;
- der = (byte*)XMALLOC(EIGHTK_BUF, cert->heap, DYNAMIC_TYPE_CERT);
- if (der == NULL) {
- WOLFSSL_MSG("wc_SetAuthKeyId OOF Problem");
- return MEMORY_E;
- }
- derSz = wolfSSL_PemCertToDer(file, der, EIGHTK_BUF);
- if (derSz <= 0)
- {
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return derSz;
- }
- ret = wc_SetAuthKeyIdFromCert(cert, der, derSz);
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return ret;
- }
- #endif /* NO_FILESYSTEM */
- /* Set KeyUsage from human readable string */
- int wc_SetKeyUsage(Cert *cert, const char *value)
- {
- int ret = 0;
- char *token, *str, *ptr;
- word32 len;
- if (cert == NULL || value == NULL)
- return BAD_FUNC_ARG;
- cert->keyUsage = 0;
- str = (char*)XMALLOC(XSTRLEN(value)+1, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (str == NULL)
- return MEMORY_E;
- XMEMSET(str, 0, XSTRLEN(value)+1);
- XSTRNCPY(str, value, XSTRLEN(value));
- /* parse value, and set corresponding Key Usage value */
- if ((token = XSTRTOK(str, ",", &ptr)) == NULL) {
- XFREE(str, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return KEYUSAGE_E;
- }
- while (token != NULL)
- {
- len = (word32)XSTRLEN(token);
- if (!XSTRNCASECMP(token, "digitalSignature", len))
- cert->keyUsage |= KEYUSE_DIGITAL_SIG;
- else if (!XSTRNCASECMP(token, "nonRepudiation", len) ||
- !XSTRNCASECMP(token, "contentCommitment", len))
- cert->keyUsage |= KEYUSE_CONTENT_COMMIT;
- else if (!XSTRNCASECMP(token, "keyEncipherment", len))
- cert->keyUsage |= KEYUSE_KEY_ENCIPHER;
- else if (!XSTRNCASECMP(token, "dataEncipherment", len))
- cert->keyUsage |= KEYUSE_DATA_ENCIPHER;
- else if (!XSTRNCASECMP(token, "keyAgreement", len))
- cert->keyUsage |= KEYUSE_KEY_AGREE;
- else if (!XSTRNCASECMP(token, "keyCertSign", len))
- cert->keyUsage |= KEYUSE_KEY_CERT_SIGN;
- else if (!XSTRNCASECMP(token, "cRLSign", len))
- cert->keyUsage |= KEYUSE_CRL_SIGN;
- else if (!XSTRNCASECMP(token, "encipherOnly", len))
- cert->keyUsage |= KEYUSE_ENCIPHER_ONLY;
- else if (!XSTRNCASECMP(token, "decipherOnly", len))
- cert->keyUsage |= KEYUSE_DECIPHER_ONLY;
- else {
- ret = KEYUSAGE_E;
- break;
- }
- token = XSTRTOK(NULL, ",", &ptr);
- }
- XFREE(str, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- /* Set ExtendedKeyUsage from human readable string */
- int wc_SetExtKeyUsage(Cert *cert, const char *value)
- {
- int ret = 0;
- char *token, *str, *ptr;
- word32 len;
- if (cert == NULL || value == NULL)
- return BAD_FUNC_ARG;
- cert->extKeyUsage = 0;
- str = (char*)XMALLOC(XSTRLEN(value)+1, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (str == NULL)
- return MEMORY_E;
- XMEMSET(str, 0, XSTRLEN(value)+1);
- XSTRNCPY(str, value, XSTRLEN(value));
- /* parse value, and set corresponding Key Usage value */
- if ((token = XSTRTOK(str, ",", &ptr)) == NULL) {
- XFREE(str, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return EXTKEYUSAGE_E;
- }
- while (token != NULL)
- {
- len = (word32)XSTRLEN(token);
- if (!XSTRNCASECMP(token, "any", len))
- cert->extKeyUsage |= EXTKEYUSE_ANY;
- else if (!XSTRNCASECMP(token, "serverAuth", len))
- cert->extKeyUsage |= EXTKEYUSE_SERVER_AUTH;
- else if (!XSTRNCASECMP(token, "clientAuth", len))
- cert->extKeyUsage |= EXTKEYUSE_CLIENT_AUTH;
- else if (!XSTRNCASECMP(token, "codeSigning", len))
- cert->extKeyUsage |= EXTKEYUSE_CODESIGN;
- else if (!XSTRNCASECMP(token, "emailProtection", len))
- cert->extKeyUsage |= EXTKEYUSE_EMAILPROT;
- else if (!XSTRNCASECMP(token, "timeStamping", len))
- cert->extKeyUsage |= EXTKEYUSE_TIMESTAMP;
- else if (!XSTRNCASECMP(token, "OCSPSigning", len))
- cert->extKeyUsage |= EXTKEYUSE_OCSP_SIGN;
- else {
- ret = EXTKEYUSAGE_E;
- break;
- }
- token = XSTRTOK(NULL, ",", &ptr);
- }
- XFREE(str, cert->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- #endif /* WOLFSSL_CERT_EXT */
- #ifdef WOLFSSL_ALT_NAMES
- /* Set Alt Names from der cert, return 0 on success */
- static int SetAltNamesFromCert(Cert* cert, const byte* der, int derSz)
- {
- int ret;
- #ifdef WOLFSSL_SMALL_STACK
- DecodedCert* decoded;
- #else
- DecodedCert decoded[1];
- #endif
- if (derSz < 0)
- return derSz;
- #ifdef WOLFSSL_SMALL_STACK
- decoded = (DecodedCert*)XMALLOC(sizeof(DecodedCert), NULL,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (decoded == NULL)
- return MEMORY_E;
- #endif
- InitDecodedCert(decoded, (byte*)der, derSz, NULL);
- ret = ParseCertRelative(decoded, CA_TYPE, NO_VERIFY, 0);
- if (ret < 0) {
- WOLFSSL_MSG("ParseCertRelative error");
- }
- else if (decoded->extensions) {
- byte b;
- int length;
- word32 maxExtensionsIdx;
- decoded->srcIdx = decoded->extensionsIdx;
- b = decoded->source[decoded->srcIdx++];
- if (b != ASN_EXTENSIONS) {
- ret = ASN_PARSE_E;
- }
- else if (GetLength(decoded->source, &decoded->srcIdx, &length,
- decoded->maxIdx) < 0) {
- ret = ASN_PARSE_E;
- }
- else if (GetSequence(decoded->source, &decoded->srcIdx, &length,
- decoded->maxIdx) < 0) {
- ret = ASN_PARSE_E;
- }
- else {
- maxExtensionsIdx = decoded->srcIdx + length;
- while (decoded->srcIdx < maxExtensionsIdx) {
- word32 oid;
- word32 startIdx = decoded->srcIdx;
- word32 tmpIdx;
- if (GetSequence(decoded->source, &decoded->srcIdx, &length,
- decoded->maxIdx) < 0) {
- ret = ASN_PARSE_E;
- break;
- }
- tmpIdx = decoded->srcIdx;
- decoded->srcIdx = startIdx;
- if (GetAlgoId(decoded->source, &decoded->srcIdx, &oid,
- oidCertExtType, decoded->maxIdx) < 0) {
- ret = ASN_PARSE_E;
- break;
- }
- if (oid == ALT_NAMES_OID) {
- cert->altNamesSz = length + (tmpIdx - startIdx);
- if (cert->altNamesSz < (int)sizeof(cert->altNames))
- XMEMCPY(cert->altNames, &decoded->source[startIdx],
- cert->altNamesSz);
- else {
- cert->altNamesSz = 0;
- WOLFSSL_MSG("AltNames extensions too big");
- ret = ALT_NAME_E;
- break;
- }
- }
- decoded->srcIdx = tmpIdx + length;
- }
- }
- }
- FreeDecodedCert(decoded);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret < 0 ? ret : 0;
- }
- /* Set Dates from der cert, return 0 on success */
- static int SetDatesFromCert(Cert* cert, const byte* der, int derSz)
- {
- int ret;
- #ifdef WOLFSSL_SMALL_STACK
- DecodedCert* decoded;
- #else
- DecodedCert decoded[1];
- #endif
- WOLFSSL_ENTER("SetDatesFromCert");
- if (derSz < 0)
- return derSz;
- #ifdef WOLFSSL_SMALL_STACK
- decoded = (DecodedCert*)XMALLOC(sizeof(DecodedCert), NULL,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (decoded == NULL)
- return MEMORY_E;
- #endif
- InitDecodedCert(decoded, (byte*)der, derSz, NULL);
- ret = ParseCertRelative(decoded, CA_TYPE, NO_VERIFY, 0);
- if (ret < 0) {
- WOLFSSL_MSG("ParseCertRelative error");
- }
- else if (decoded->beforeDate == NULL || decoded->afterDate == NULL) {
- WOLFSSL_MSG("Couldn't extract dates");
- ret = -1;
- }
- else if (decoded->beforeDateLen > MAX_DATE_SIZE ||
- decoded->afterDateLen > MAX_DATE_SIZE) {
- WOLFSSL_MSG("Bad date size");
- ret = -1;
- }
- else {
- XMEMCPY(cert->beforeDate, decoded->beforeDate, decoded->beforeDateLen);
- XMEMCPY(cert->afterDate, decoded->afterDate, decoded->afterDateLen);
- cert->beforeDateSz = decoded->beforeDateLen;
- cert->afterDateSz = decoded->afterDateLen;
- }
- FreeDecodedCert(decoded);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret < 0 ? ret : 0;
- }
- #endif /* WOLFSSL_ALT_NAMES */
- /* Set cn name from der buffer, return 0 on success */
- static int SetNameFromCert(CertName* cn, const byte* der, int derSz)
- {
- int ret, sz;
- #ifdef WOLFSSL_SMALL_STACK
- DecodedCert* decoded;
- #else
- DecodedCert decoded[1];
- #endif
- if (derSz < 0)
- return derSz;
- #ifdef WOLFSSL_SMALL_STACK
- decoded = (DecodedCert*)XMALLOC(sizeof(DecodedCert), NULL,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (decoded == NULL)
- return MEMORY_E;
- #endif
- InitDecodedCert(decoded, (byte*)der, derSz, NULL);
- ret = ParseCertRelative(decoded, CA_TYPE, NO_VERIFY, 0);
- if (ret < 0) {
- WOLFSSL_MSG("ParseCertRelative error");
- }
- else {
- if (decoded->subjectCN) {
- sz = (decoded->subjectCNLen < CTC_NAME_SIZE) ? decoded->subjectCNLen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->commonName, decoded->subjectCN, CTC_NAME_SIZE);
- cn->commonName[sz] = 0;
- cn->commonNameEnc = decoded->subjectCNEnc;
- }
- if (decoded->subjectC) {
- sz = (decoded->subjectCLen < CTC_NAME_SIZE) ? decoded->subjectCLen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->country, decoded->subjectC, CTC_NAME_SIZE);
- cn->country[sz] = 0;
- cn->countryEnc = decoded->subjectCEnc;
- }
- if (decoded->subjectST) {
- sz = (decoded->subjectSTLen < CTC_NAME_SIZE) ? decoded->subjectSTLen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->state, decoded->subjectST, CTC_NAME_SIZE);
- cn->state[sz] = 0;
- cn->stateEnc = decoded->subjectSTEnc;
- }
- if (decoded->subjectL) {
- sz = (decoded->subjectLLen < CTC_NAME_SIZE) ? decoded->subjectLLen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->locality, decoded->subjectL, CTC_NAME_SIZE);
- cn->locality[sz] = 0;
- cn->localityEnc = decoded->subjectLEnc;
- }
- if (decoded->subjectO) {
- sz = (decoded->subjectOLen < CTC_NAME_SIZE) ? decoded->subjectOLen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->org, decoded->subjectO, CTC_NAME_SIZE);
- cn->org[sz] = 0;
- cn->orgEnc = decoded->subjectOEnc;
- }
- if (decoded->subjectOU) {
- sz = (decoded->subjectOULen < CTC_NAME_SIZE) ? decoded->subjectOULen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->unit, decoded->subjectOU, CTC_NAME_SIZE);
- cn->unit[sz] = 0;
- cn->unitEnc = decoded->subjectOUEnc;
- }
- if (decoded->subjectSN) {
- sz = (decoded->subjectSNLen < CTC_NAME_SIZE) ? decoded->subjectSNLen
- : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->sur, decoded->subjectSN, CTC_NAME_SIZE);
- cn->sur[sz] = 0;
- cn->surEnc = decoded->subjectSNEnc;
- }
- if (decoded->subjectEmail) {
- sz = (decoded->subjectEmailLen < CTC_NAME_SIZE)
- ? decoded->subjectEmailLen : CTC_NAME_SIZE - 1;
- XSTRNCPY(cn->email, decoded->subjectEmail, CTC_NAME_SIZE);
- cn->email[sz] = 0;
- }
- }
- FreeDecodedCert(decoded);
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(decoded, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret < 0 ? ret : 0;
- }
- #ifndef NO_FILESYSTEM
- /* Set cert issuer from issuerFile in PEM */
- int wc_SetIssuer(Cert* cert, const char* issuerFile)
- {
- int ret;
- int derSz;
- byte* der = (byte*)XMALLOC(EIGHTK_BUF, cert->heap, DYNAMIC_TYPE_CERT);
- if (der == NULL) {
- WOLFSSL_MSG("wc_SetIssuer OOF Problem");
- return MEMORY_E;
- }
- derSz = wolfSSL_PemCertToDer(issuerFile, der, EIGHTK_BUF);
- cert->selfSigned = 0;
- ret = SetNameFromCert(&cert->issuer, der, derSz);
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return ret;
- }
- /* Set cert subject from subjectFile in PEM */
- int wc_SetSubject(Cert* cert, const char* subjectFile)
- {
- int ret;
- int derSz;
- byte* der = (byte*)XMALLOC(EIGHTK_BUF, cert->heap, DYNAMIC_TYPE_CERT);
- if (der == NULL) {
- WOLFSSL_MSG("wc_SetSubject OOF Problem");
- return MEMORY_E;
- }
- derSz = wolfSSL_PemCertToDer(subjectFile, der, EIGHTK_BUF);
- ret = SetNameFromCert(&cert->subject, der, derSz);
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return ret;
- }
- #ifdef WOLFSSL_ALT_NAMES
- /* Set atl names from file in PEM */
- int wc_SetAltNames(Cert* cert, const char* file)
- {
- int ret;
- int derSz;
- byte* der = (byte*)XMALLOC(EIGHTK_BUF, cert->heap, DYNAMIC_TYPE_CERT);
- if (der == NULL) {
- WOLFSSL_MSG("wc_SetAltNames OOF Problem");
- return MEMORY_E;
- }
- derSz = wolfSSL_PemCertToDer(file, der, EIGHTK_BUF);
- ret = SetAltNamesFromCert(cert, der, derSz);
- XFREE(der, cert->heap, DYNAMIC_TYPE_CERT);
- return ret;
- }
- #endif /* WOLFSSL_ALT_NAMES */
- #endif /* NO_FILESYSTEM */
- /* Set cert issuer from DER buffer */
- int wc_SetIssuerBuffer(Cert* cert, const byte* der, int derSz)
- {
- cert->selfSigned = 0;
- return SetNameFromCert(&cert->issuer, der, derSz);
- }
- /* Set cert subject from DER buffer */
- int wc_SetSubjectBuffer(Cert* cert, const byte* der, int derSz)
- {
- return SetNameFromCert(&cert->subject, der, derSz);
- }
- #ifdef WOLFSSL_ALT_NAMES
- /* Set cert alt names from DER buffer */
- int wc_SetAltNamesBuffer(Cert* cert, const byte* der, int derSz)
- {
- return SetAltNamesFromCert(cert, der, derSz);
- }
- /* Set cert dates from DER buffer */
- int wc_SetDatesBuffer(Cert* cert, const byte* der, int derSz)
- {
- return SetDatesFromCert(cert, der, derSz);
- }
- #endif /* WOLFSSL_ALT_NAMES */
- #endif /* WOLFSSL_CERT_GEN */
- #ifdef HAVE_ECC
- /* Der Encode r & s ints into out, outLen is (in/out) size */
- int StoreECC_DSA_Sig(byte* out, word32* outLen, mp_int* r, mp_int* s)
- {
- word32 idx = 0;
- int rSz; /* encoding size */
- int sSz;
- word32 headerSz = 4; /* 2*ASN_TAG + 2*LEN(ENUM) */
- /* If the leading bit on the INTEGER is a 1, add a leading zero */
- int rLeadingZero = mp_leading_bit(r);
- int sLeadingZero = mp_leading_bit(s);
- int rLen = mp_unsigned_bin_size(r); /* big int size */
- int sLen = mp_unsigned_bin_size(s);
- if (*outLen < (rLen + rLeadingZero + sLen + sLeadingZero +
- headerSz + 2)) /* SEQ_TAG + LEN(ENUM) */
- return BUFFER_E;
- idx = SetSequence(rLen + rLeadingZero + sLen+sLeadingZero + headerSz, out);
- /* store r */
- rSz = SetASNIntMP(r, -1, &out[idx]);
- if (rSz < 0)
- return rSz;
- idx += rSz;
- /* store s */
- sSz = SetASNIntMP(s, -1, &out[idx]);
- if (sSz < 0)
- return sSz;
- idx += sSz;
- *outLen = idx;
- return 0;
- }
- /* Der Decode ECC-DSA Signature, r & s stored as big ints */
- int DecodeECC_DSA_Sig(const byte* sig, word32 sigLen, mp_int* r, mp_int* s)
- {
- word32 idx = 0;
- int len = 0;
- if (GetSequence(sig, &idx, &len, sigLen) < 0) {
- return ASN_ECC_KEY_E;
- }
- if ((word32)len > (sigLen - idx)) {
- return ASN_ECC_KEY_E;
- }
- if (GetInt(r, sig, &idx, sigLen) < 0) {
- return ASN_ECC_KEY_E;
- }
- if (GetInt(s, sig, &idx, sigLen) < 0) {
- return ASN_ECC_KEY_E;
- }
- return 0;
- }
- int wc_EccPrivateKeyDecode(const byte* input, word32* inOutIdx, ecc_key* key,
- word32 inSz)
- {
- word32 oidSum;
- int version, length;
- int privSz, pubSz = 0;
- byte b;
- int ret = 0;
- int curve_id = ECC_CURVE_DEF;
- #ifdef WOLFSSL_SMALL_STACK
- byte* priv;
- byte* pub;
- #else
- byte priv[ECC_MAXSIZE+1];
- byte pub[2*(ECC_MAXSIZE+1)]; /* public key has two parts plus header */
- #endif
- byte* pubData = NULL;
- if (input == NULL || inOutIdx == NULL || key == NULL || inSz == 0)
- return BAD_FUNC_ARG;
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- if (GetMyVersion(input, inOutIdx, &version, inSz) < 0)
- return ASN_PARSE_E;
- b = input[*inOutIdx];
- *inOutIdx += 1;
- /* priv type */
- if (b != 4 && b != 6 && b != 7)
- return ASN_PARSE_E;
- if (GetLength(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- if (length > ECC_MAXSIZE)
- return BUFFER_E;
- #ifdef WOLFSSL_SMALL_STACK
- priv = (byte*)XMALLOC(ECC_MAXSIZE+1, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (priv == NULL)
- return MEMORY_E;
- pub = (byte*)XMALLOC(2*(ECC_MAXSIZE+1), NULL, DYNAMIC_TYPE_TMP_BUFFER);
- if (pub == NULL) {
- XFREE(priv, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
- #endif
- /* priv key */
- privSz = length;
- XMEMCPY(priv, &input[*inOutIdx], privSz);
- *inOutIdx += length;
- if (ret == 0 && (*inOutIdx + 1) < inSz) {
- /* prefix 0, may have */
- b = input[*inOutIdx];
- if (b == ECC_PREFIX_0) {
- *inOutIdx += 1;
- if (GetLength(input, inOutIdx, &length, inSz) <= 0)
- ret = ASN_PARSE_E;
- else {
- ret = GetObjectId(input, inOutIdx, &oidSum, oidIgnoreType,
- inSz);
- if (ret == 0) {
- if ((ret = CheckCurve(oidSum)) < 0)
- ret = ECC_CURVE_OID_E;
- else {
- curve_id = ret;
- ret = 0;
- }
- }
- }
- }
- }
- if (ret == 0 && (*inOutIdx + 1) < inSz) {
- /* prefix 1 */
- b = input[*inOutIdx];
- *inOutIdx += 1;
- if (b != ECC_PREFIX_1) {
- ret = ASN_ECC_KEY_E;
- }
- else if (GetLength(input, inOutIdx, &length, inSz) <= 0) {
- ret = ASN_PARSE_E;
- }
- else {
- /* key header */
- ret = CheckBitString(input, inOutIdx, &length, inSz, 0, NULL);
- if (ret == 0) {
- /* pub key */
- pubSz = length;
- if (pubSz < 2*(ECC_MAXSIZE+1)) {
- XMEMCPY(pub, &input[*inOutIdx], pubSz);
- *inOutIdx += length;
- pubData = pub;
- }
- else
- ret = BUFFER_E;
- }
- }
- }
- if (ret == 0) {
- ret = wc_ecc_import_private_key_ex(priv, privSz, pubData, pubSz, key,
- curve_id);
- }
- #ifdef WOLFSSL_SMALL_STACK
- XFREE(priv, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(pub, NULL, DYNAMIC_TYPE_TMP_BUFFER);
- #endif
- return ret;
- }
- int wc_EccPublicKeyDecode(const byte* input, word32* inOutIdx,
- ecc_key* key, word32 inSz)
- {
- int length;
- int ret;
- #ifdef ECC_CHECK_PUBLIC_KEY_OID
- word32 oidSum;
- #endif
- if (input == NULL || inOutIdx == NULL || key == NULL || inSz == 0)
- return BAD_FUNC_ARG;
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- ret = SkipObjectId(input, inOutIdx, inSz);
- if (ret != 0)
- return ret;
- /* ecc params information */
- #ifdef ECC_CHECK_PUBLIC_KEY_OID
- ret = GetObjectId(input, inOutIdx, &oidSum, oidIgnoreType, inSz);
- if (ret != 0)
- return ret;
- if (CheckCurve(oidSum) < 0)
- return ECC_CURVE_OID_E;
- #else
- ret = SkipObjectId(input, inOutIdx, inSz);
- if (ret != 0)
- return ret;
- #endif
- /* key header */
- ret = CheckBitString(input, inOutIdx, NULL, inSz, 1, NULL);
- if (ret != 0)
- return ret;
- /* This is the raw point data compressed or uncompressed. */
- if (wc_ecc_import_x963(input + *inOutIdx, inSz - *inOutIdx, key) != 0)
- return ASN_ECC_KEY_E;
- return 0;
- }
- /* build DER formatted ECC key, include optional public key if requested,
- * return length on success, negative on error */
- static int wc_BuildEccKeyDer(ecc_key* key, byte* output, word32 inLen,
- int pubIn)
- {
- byte curve[MAX_ALGO_SZ+2];
- byte ver[MAX_VERSION_SZ];
- byte seq[MAX_SEQ_SZ];
- byte *prv = NULL, *pub = NULL;
- int ret, totalSz, curveSz, verSz;
- int privHdrSz = ASN_ECC_HEADER_SZ;
- int pubHdrSz = ASN_ECC_CONTEXT_SZ + ASN_ECC_HEADER_SZ;
- word32 idx = 0, prvidx = 0, pubidx = 0, curveidx = 0;
- word32 seqSz, privSz, pubSz = ECC_BUFSIZE;
- if (key == NULL || output == NULL || inLen == 0)
- return BAD_FUNC_ARG;
- /* curve */
- curve[curveidx++] = ECC_PREFIX_0;
- curveidx++ /* to put the size after computation */;
- curveSz = SetCurve(key, curve+curveidx);
- if (curveSz < 0)
- return curveSz;
- /* set computed size */
- curve[1] = (byte)curveSz;
- curveidx += curveSz;
- /* private */
- privSz = key->dp->size;
- prv = (byte*)XMALLOC(privSz + privHdrSz + MAX_SEQ_SZ,
- key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (prv == NULL) {
- return MEMORY_E;
- }
- prvidx += SetOctetString8Bit(key->dp->size, &prv[prvidx]);
- ret = wc_ecc_export_private_only(key, prv + prvidx, &privSz);
- if (ret < 0) {
- XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- prvidx += privSz;
- /* pubIn */
- if (pubIn) {
- ret = wc_ecc_export_x963(key, NULL, &pubSz);
- if (ret != LENGTH_ONLY_E) {
- XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- pub = (byte*)XMALLOC(pubSz + pubHdrSz + MAX_SEQ_SZ,
- key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (pub == NULL) {
- XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return MEMORY_E;
- }
- pub[pubidx++] = ECC_PREFIX_1;
- if (pubSz > 128) /* leading zero + extra size byte */
- pubidx += SetLength(pubSz + ASN_ECC_CONTEXT_SZ + 2, pub+pubidx);
- else /* leading zero */
- pubidx += SetLength(pubSz + ASN_ECC_CONTEXT_SZ + 1, pub+pubidx);
- /* SetBitString adds leading zero */
- pubidx += SetBitString(pubSz, 0, pub + pubidx);
- ret = wc_ecc_export_x963(key, pub + pubidx, &pubSz);
- if (ret != 0) {
- XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- pubidx += pubSz;
- }
- /* make headers */
- verSz = SetMyVersion(1, ver, FALSE);
- seqSz = SetSequence(verSz + prvidx + pubidx + curveidx, seq);
- totalSz = prvidx + pubidx + curveidx + verSz + seqSz;
- if (totalSz > (int)inLen) {
- XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (pubIn) {
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- }
- return BAD_FUNC_ARG;
- }
- /* write out */
- /* seq */
- XMEMCPY(output + idx, seq, seqSz);
- idx = seqSz;
- /* ver */
- XMEMCPY(output + idx, ver, verSz);
- idx += verSz;
- /* private */
- XMEMCPY(output + idx, prv, prvidx);
- idx += prvidx;
- XFREE(prv, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- /* curve */
- XMEMCPY(output + idx, curve, curveidx);
- idx += curveidx;
- /* pubIn */
- if (pubIn) {
- XMEMCPY(output + idx, pub, pubidx);
- /* idx += pubidx; not used after write, if more data remove comment */
- XFREE(pub, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- }
- return totalSz;
- }
- /* Write a Private ecc key, including public to DER format,
- * length on success else < 0 */
- int wc_EccKeyToDer(ecc_key* key, byte* output, word32 inLen)
- {
- return wc_BuildEccKeyDer(key, output, inLen, 1);
- }
- /* Write only private ecc key to DER format,
- * length on success else < 0 */
- int wc_EccPrivateKeyToDer(ecc_key* key, byte* output, word32 inLen)
- {
- return wc_BuildEccKeyDer(key, output, inLen, 0);
- }
- /* Write only private ecc key to unencrypted PKCS#8 format.
- *
- * If output is NULL, places required PKCS#8 buffer size in outLen and
- * returns LENGTH_ONLY_E.
- *
- * return length on success else < 0 */
- int wc_EccPrivateKeyToPKCS8(ecc_key* key, byte* output, word32* outLen)
- {
- int ret, tmpDerSz;
- int algoID = 0;
- word32 oidSz = 0;
- word32 pkcs8Sz = 0;
- const byte* curveOID = NULL;
- byte* tmpDer = NULL;
- if (key == NULL || outLen == NULL)
- return BAD_FUNC_ARG;
- /* set algoID, get curve OID */
- algoID = ECDSAk;
- ret = wc_ecc_get_oid(key->dp->oidSum, &curveOID, &oidSz);
- if (ret < 0)
- return ret;
- /* temp buffer for plain DER key */
- tmpDer = (byte*)XMALLOC(ECC_BUFSIZE, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (tmpDer == NULL)
- return MEMORY_E;
- XMEMSET(tmpDer, 0, ECC_BUFSIZE);
- tmpDerSz = wc_BuildEccKeyDer(key, tmpDer, ECC_BUFSIZE, 0);
- if (tmpDerSz < 0) {
- XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return tmpDerSz;
- }
- /* get pkcs8 expected output size */
- ret = wc_CreatePKCS8Key(NULL, &pkcs8Sz, tmpDer, tmpDerSz, algoID,
- curveOID, oidSz);
- if (ret != LENGTH_ONLY_E) {
- XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- if (output == NULL) {
- XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- *outLen = pkcs8Sz;
- return LENGTH_ONLY_E;
- } else if (*outLen < pkcs8Sz) {
- XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- WOLFSSL_MSG("Input buffer too small for ECC PKCS#8 key");
- return BUFFER_E;
- }
- ret = wc_CreatePKCS8Key(output, &pkcs8Sz, tmpDer, tmpDerSz,
- algoID, curveOID, oidSz);
- if (ret < 0) {
- XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- XFREE(tmpDer, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- *outLen = ret;
- return ret;
- }
- #endif /* HAVE_ECC */
- #ifdef HAVE_ED25519
- int wc_Ed25519PrivateKeyDecode(const byte* input, word32* inOutIdx,
- ed25519_key* key, word32 inSz)
- {
- word32 oid;
- int ret, version, length, endKeyIdx, privSz, pubSz;
- const byte* priv;
- const byte* pub;
- if (input == NULL || inOutIdx == NULL || key == NULL || inSz == 0)
- return BAD_FUNC_ARG;
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- endKeyIdx = *inOutIdx + length;
- if (GetMyVersion(input, inOutIdx, &version, inSz) < 0)
- return ASN_PARSE_E;
- if (version != 0) {
- WOLFSSL_MSG("Unrecognized version of ED25519 private key");
- return ASN_PARSE_E;
- }
- if (GetAlgoId(input, inOutIdx, &oid, oidKeyType, inSz) < 0)
- return ASN_PARSE_E;
- if (oid != ED25519k)
- return ASN_PARSE_E;
- if (GetOctetString(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- if (GetOctetString(input, inOutIdx, &privSz, inSz) < 0)
- return ASN_PARSE_E;
- priv = input + *inOutIdx;
- *inOutIdx += privSz;
- if (endKeyIdx == (int)*inOutIdx) {
- ret = wc_ed25519_import_private_only(priv, privSz, key);
- }
- else {
- if (GetASNHeader(input, ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 1,
- inOutIdx, &length, inSz) < 0) {
- return ASN_PARSE_E;
- }
- if (GetOctetString(input, inOutIdx, &pubSz, inSz) < 0)
- return ASN_PARSE_E;
- pub = input + *inOutIdx;
- *inOutIdx += pubSz;
- ret = wc_ed25519_import_private_key(priv, privSz, pub, pubSz, key);
- }
- if (ret == 0 && endKeyIdx != (int)*inOutIdx)
- return ASN_PARSE_E;
- return ret;
- }
- int wc_Ed25519PublicKeyDecode(const byte* input, word32* inOutIdx,
- ed25519_key* key, word32 inSz)
- {
- int length;
- int ret;
- #ifdef ECC_CHECK_PUBLIC_KEY_OID
- word32 oidSum;
- #endif
- if (input == NULL || inOutIdx == NULL || key == NULL || inSz == 0)
- return BAD_FUNC_ARG;
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- if (GetSequence(input, inOutIdx, &length, inSz) < 0)
- return ASN_PARSE_E;
- ret = SkipObjectId(input, inOutIdx, inSz);
- if (ret != 0)
- return ret;
- /* key header */
- ret = CheckBitString(input, inOutIdx, NULL, inSz, 1, NULL);
- if (ret != 0)
- return ret;
- /* This is the raw point data compressed or uncompressed. */
- if (wc_ed25519_import_public(input + *inOutIdx, inSz - *inOutIdx, key) != 0)
- return ASN_ECC_KEY_E;
- return 0;
- }
- #ifdef WOLFSSL_KEY_GEN
- /* build DER formatted ED25519 key,
- * return length on success, negative on error */
- static int wc_BuildEd25519KeyDer(ed25519_key* key, byte* output, word32 inLen,
- int pubOut)
- {
- byte algoArray[MAX_ALGO_SZ];
- byte ver[MAX_VERSION_SZ];
- byte seq[MAX_SEQ_SZ];
- int ret;
- word32 idx = 0, seqSz, verSz, algoSz, privSz, pubSz = 0;
- if (key == NULL || output == NULL || inLen == 0)
- return BAD_FUNC_ARG;
- if (pubOut)
- pubSz = 2 + 2 + ED25519_PUB_KEY_SIZE;
- privSz = 2 + 2 + ED25519_KEY_SIZE;
- algoSz = SetAlgoID(ED25519k, algoArray, oidKeyType, 0);
- verSz = SetMyVersion(0, ver, FALSE);
- seqSz = SetSequence(verSz + algoSz + privSz + pubSz, seq);
- if (seqSz + verSz + algoSz + privSz + pubSz > inLen)
- return BAD_FUNC_ARG;
- /* write out */
- /* seq */
- XMEMCPY(output + idx, seq, seqSz);
- idx = seqSz;
- /* ver */
- XMEMCPY(output + idx, ver, verSz);
- idx += verSz;
- /* algo */
- XMEMCPY(output + idx, algoArray, algoSz);
- idx += algoSz;
- /* privKey */
- idx += SetOctetString(2 + ED25519_KEY_SIZE, output + idx);
- idx += SetOctetString(ED25519_KEY_SIZE, output + idx);
- ret = wc_ed25519_export_private_only(key, output + idx, &privSz);
- if (ret != 0)
- return ret;
- idx += privSz;
- /* pubKey */
- if (pubOut) {
- idx += SetExplicit(1, 2 + ED25519_PUB_KEY_SIZE, output + idx);
- idx += SetOctetString(ED25519_KEY_SIZE, output + idx);
- ret = wc_ed25519_export_public(key, output + idx, &pubSz);
- if (ret != 0)
- return ret;
- idx += pubSz;
- }
- return idx;
- }
- /* Write a Private ecc key, including public to DER format,
- * length on success else < 0 */
- int wc_Ed25519KeyToDer(ed25519_key* key, byte* output, word32 inLen)
- {
- return wc_BuildEd25519KeyDer(key, output, inLen, 1);
- }
- /* Write only private ecc key to DER format,
- * length on success else < 0 */
- int wc_Ed25519PrivateKeyToDer(ed25519_key* key, byte* output, word32 inLen)
- {
- return wc_BuildEd25519KeyDer(key, output, inLen, 0);
- }
- #endif /* WOLFSSL_KEY_GEN */
- #endif /* HAVE_ED25519 */
- #if defined(HAVE_OCSP) || defined(HAVE_CRL)
- /* Get raw Date only, no processing, 0 on success */
- static int GetBasicDate(const byte* source, word32* idx, byte* date,
- byte* format, int maxIdx)
- {
- int length;
- WOLFSSL_ENTER("GetBasicDate");
- *format = source[*idx];
- *idx += 1;
- if (*format != ASN_UTC_TIME && *format != ASN_GENERALIZED_TIME)
- return ASN_TIME_E;
- if (GetLength(source, idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
- if (length > MAX_DATE_SIZE || length < MIN_DATE_SIZE)
- return ASN_DATE_SZ_E;
- XMEMCPY(date, &source[*idx], length);
- *idx += length;
- return 0;
- }
- #endif
- #ifdef HAVE_OCSP
- static int GetEnumerated(const byte* input, word32* inOutIdx, int *value)
- {
- word32 idx = *inOutIdx;
- word32 len;
- WOLFSSL_ENTER("GetEnumerated");
- *value = 0;
- if (input[idx++] != ASN_ENUMERATED)
- return ASN_PARSE_E;
- len = input[idx++];
- if (len > 4)
- return ASN_PARSE_E;
- while (len--) {
- *value = *value << 8 | input[idx++];
- }
- *inOutIdx = idx;
- return *value;
- }
- static int DecodeSingleResponse(byte* source,
- word32* ioIndex, OcspResponse* resp, word32 size)
- {
- word32 idx = *ioIndex, prevIndex, oid;
- int length, wrapperSz;
- CertStatus* cs = resp->status;
- int ret;
- WOLFSSL_ENTER("DecodeSingleResponse");
- /* Outer wrapper of the SEQUENCE OF Single Responses. */
- if (GetSequence(source, &idx, &wrapperSz, size) < 0)
- return ASN_PARSE_E;
- prevIndex = idx;
- /* When making a request, we only request one status on one certificate
- * at a time. There should only be one SingleResponse */
- /* Wrapper around the Single Response */
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- /* Wrapper around the CertID */
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- /* Skip the hash algorithm */
- if (GetAlgoId(source, &idx, &oid, oidIgnoreType, size) < 0)
- return ASN_PARSE_E;
- /* Save reference to the hash of CN */
- ret = GetOctetString(source, &idx, &length, size);
- if (ret < 0)
- return ret;
- resp->issuerHash = source + idx;
- idx += length;
- /* Save reference to the hash of the issuer public key */
- ret = GetOctetString(source, &idx, &length, size);
- if (ret < 0)
- return ret;
- resp->issuerKeyHash = source + idx;
- idx += length;
- /* Get serial number */
- if (GetSerialNumber(source, &idx, cs->serial, &cs->serialSz, size) < 0)
- return ASN_PARSE_E;
- /* CertStatus */
- switch (source[idx++])
- {
- case (ASN_CONTEXT_SPECIFIC | CERT_GOOD):
- cs->status = CERT_GOOD;
- idx++;
- break;
- case (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | CERT_REVOKED):
- cs->status = CERT_REVOKED;
- if (GetLength(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- idx += length;
- break;
- case (ASN_CONTEXT_SPECIFIC | CERT_UNKNOWN):
- cs->status = CERT_UNKNOWN;
- idx++;
- break;
- default:
- return ASN_PARSE_E;
- }
- #if defined(WOLFSSL_NGINX) || defined(WOLFSSL_HAPROXY)
- cs->thisDateAsn = source + idx;
- #endif
- if (GetBasicDate(source, &idx, cs->thisDate,
- &cs->thisDateFormat, size) < 0)
- return ASN_PARSE_E;
- #ifndef NO_ASN_TIME
- if (!XVALIDATE_DATE(cs->thisDate, cs->thisDateFormat, BEFORE))
- return ASN_BEFORE_DATE_E;
- #endif
- /* The following items are optional. Only check for them if there is more
- * unprocessed data in the singleResponse wrapper. */
- if (((int)(idx - prevIndex) < wrapperSz) &&
- (source[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 0)))
- {
- idx++;
- if (GetLength(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- #if defined(WOLFSSL_NGINX) || defined(WOLFSSL_HAPROXY)
- cs->nextDateAsn = source + idx;
- #endif
- if (GetBasicDate(source, &idx, cs->nextDate,
- &cs->nextDateFormat, size) < 0)
- return ASN_PARSE_E;
- #ifndef NO_ASN_TIME
- if (!XVALIDATE_DATE(cs->nextDate, cs->nextDateFormat, AFTER))
- return ASN_AFTER_DATE_E;
- #endif
- }
- if (((int)(idx - prevIndex) < wrapperSz) &&
- (source[idx] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 1)))
- {
- idx++;
- if (GetLength(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- idx += length;
- }
- *ioIndex = idx;
- return 0;
- }
- static int DecodeOcspRespExtensions(byte* source,
- word32* ioIndex, OcspResponse* resp, word32 sz)
- {
- word32 idx = *ioIndex;
- int length;
- int ext_bound; /* boundary index for the sequence of extensions */
- word32 oid;
- int ret;
- WOLFSSL_ENTER("DecodeOcspRespExtensions");
- if ((idx + 1) > sz)
- return BUFFER_E;
- if (source[idx++] != (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC | 1))
- return ASN_PARSE_E;
- if (GetLength(source, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- if (GetSequence(source, &idx, &length, sz) < 0)
- return ASN_PARSE_E;
- ext_bound = idx + length;
- while (idx < (word32)ext_bound) {
- if (GetSequence(source, &idx, &length, sz) < 0) {
- WOLFSSL_MSG("\tfail: should be a SEQUENCE");
- return ASN_PARSE_E;
- }
- oid = 0;
- if (GetObjectId(source, &idx, &oid, oidOcspType, sz) < 0) {
- WOLFSSL_MSG("\tfail: OBJECT ID");
- return ASN_PARSE_E;
- }
- /* check for critical flag */
- if (source[idx] == ASN_BOOLEAN) {
- WOLFSSL_MSG("\tfound optional critical flag, moving past");
- ret = GetBoolean(source, &idx, sz);
- if (ret < 0)
- return ret;
- }
- ret = GetOctetString(source, &idx, &length, sz);
- if (ret < 0)
- return ret;
- if (oid == OCSP_NONCE_OID) {
- /* get data inside extra OCTET_STRING */
- ret = GetOctetString(source, &idx, &length, sz);
- if (ret < 0)
- return ret;
- resp->nonce = source + idx;
- resp->nonceSz = length;
- }
- idx += length;
- }
- *ioIndex = idx;
- return 0;
- }
- static int DecodeResponseData(byte* source,
- word32* ioIndex, OcspResponse* resp, word32 size)
- {
- word32 idx = *ioIndex, prev_idx;
- int length;
- int version;
- word32 responderId = 0;
- WOLFSSL_ENTER("DecodeResponseData");
- resp->response = source + idx;
- prev_idx = idx;
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- resp->responseSz = length + idx - prev_idx;
- /* Get version. It is an EXPLICIT[0] DEFAULT(0) value. If this
- * item isn't an EXPLICIT[0], then set version to zero and move
- * onto the next item.
- */
- if (source[idx] == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED))
- {
- idx += 2; /* Eat the value and length */
- if (GetMyVersion(source, &idx, &version, size) < 0)
- return ASN_PARSE_E;
- } else
- version = 0;
- responderId = source[idx++];
- if ((responderId == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 1)) ||
- (responderId == (ASN_CONTEXT_SPECIFIC | ASN_CONSTRUCTED | 2)))
- {
- if (GetLength(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- idx += length;
- }
- else
- return ASN_PARSE_E;
- /* save pointer to the producedAt time */
- if (GetBasicDate(source, &idx, resp->producedDate,
- &resp->producedDateFormat, size) < 0)
- return ASN_PARSE_E;
- if (DecodeSingleResponse(source, &idx, resp, size) < 0)
- return ASN_PARSE_E;
- /*
- * Check the length of the ResponseData against the current index to
- * see if there are extensions, they are optional.
- */
- if (idx - prev_idx < resp->responseSz)
- if (DecodeOcspRespExtensions(source, &idx, resp, size) < 0)
- return ASN_PARSE_E;
- *ioIndex = idx;
- return 0;
- }
- #ifndef WOLFSSL_NO_OCSP_OPTIONAL_CERTS
- static int DecodeCerts(byte* source,
- word32* ioIndex, OcspResponse* resp, word32 size)
- {
- word32 idx = *ioIndex;
- WOLFSSL_ENTER("DecodeCerts");
- if (source[idx++] == (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC))
- {
- int length;
- if (GetLength(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- resp->cert = source + idx;
- resp->certSz = length;
- idx += length;
- }
- *ioIndex = idx;
- return 0;
- }
- #endif /* WOLFSSL_NO_OCSP_OPTIONAL_CERTS */
- static int DecodeBasicOcspResponse(byte* source, word32* ioIndex,
- OcspResponse* resp, word32 size, void* cm, void* heap, int noVerify)
- {
- int length;
- word32 idx = *ioIndex;
- word32 end_index;
- int ret;
- int sigLength;
- WOLFSSL_ENTER("DecodeBasicOcspResponse");
- (void)heap;
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- if (idx + length > size)
- return ASN_INPUT_E;
- end_index = idx + length;
- if (DecodeResponseData(source, &idx, resp, size) < 0)
- return ASN_PARSE_E;
- /* Get the signature algorithm */
- if (GetAlgoId(source, &idx, &resp->sigOID, oidSigType, size) < 0)
- return ASN_PARSE_E;
- ret = CheckBitString(source, &idx, &sigLength, size, 1, NULL);
- if (ret != 0)
- return ret;
- resp->sigSz = sigLength;
- resp->sig = source + idx;
- idx += sigLength;
- /*
- * Check the length of the BasicOcspResponse against the current index to
- * see if there are certificates, they are optional.
- */
- #ifndef WOLFSSL_NO_OCSP_OPTIONAL_CERTS
- if (idx < end_index)
- {
- DecodedCert cert;
- if (DecodeCerts(source, &idx, resp, size) < 0)
- return ASN_PARSE_E;
- InitDecodedCert(&cert, resp->cert, resp->certSz, heap);
- /* Don't verify if we don't have access to Cert Manager. */
- ret = ParseCertRelative(&cert, CERT_TYPE,
- noVerify ? NO_VERIFY : VERIFY_OCSP, cm);
- if (ret < 0) {
- WOLFSSL_MSG("\tOCSP Responder certificate parsing failed");
- FreeDecodedCert(&cert);
- return ret;
- }
- #ifndef WOLFSSL_NO_OCSP_ISSUER_CHECK
- if ((cert.extExtKeyUsage & EXTKEYUSE_OCSP_SIGN) == 0) {
- if (XMEMCMP(cert.subjectHash,
- resp->issuerHash, KEYID_SIZE) == 0) {
- WOLFSSL_MSG("\tOCSP Response signed by issuer");
- }
- else {
- WOLFSSL_MSG("\tOCSP Responder key usage check failed");
- FreeDecodedCert(&cert);
- return BAD_OCSP_RESPONDER;
- }
- }
- #endif
- /* ConfirmSignature is blocking here */
- ret = ConfirmSignature(&cert.sigCtx,
- resp->response, resp->responseSz,
- cert.publicKey, cert.pubKeySize, cert.keyOID,
- resp->sig, resp->sigSz, resp->sigOID);
- FreeDecodedCert(&cert);
- if (ret != 0) {
- WOLFSSL_MSG("\tOCSP Confirm signature failed");
- return ASN_OCSP_CONFIRM_E;
- }
- }
- else
- #endif /* WOLFSSL_NO_OCSP_OPTIONAL_CERTS */
- {
- Signer* ca = NULL;
- int sigValid = -1;
- #ifndef NO_SKID
- ca = GetCA(cm, resp->issuerKeyHash);
- #else
- ca = GetCA(cm, resp->issuerHash);
- #endif
- if (ca) {
- SignatureCtx sigCtx;
- InitSignatureCtx(&sigCtx, heap, INVALID_DEVID);
- /* ConfirmSignature is blocking here */
- sigValid = ConfirmSignature(&sigCtx, resp->response,
- resp->responseSz, ca->publicKey, ca->pubKeySize, ca->keyOID,
- resp->sig, resp->sigSz, resp->sigOID);
- }
- if (ca == NULL || sigValid != 0) {
- WOLFSSL_MSG("\tOCSP Confirm signature failed");
- return ASN_OCSP_CONFIRM_E;
- }
- (void)noVerify;
- }
- *ioIndex = idx;
- return 0;
- }
- void InitOcspResponse(OcspResponse* resp, CertStatus* status,
- byte* source, word32 inSz)
- {
- WOLFSSL_ENTER("InitOcspResponse");
- XMEMSET(status, 0, sizeof(CertStatus));
- XMEMSET(resp, 0, sizeof(OcspResponse));
- resp->responseStatus = -1;
- resp->status = status;
- resp->source = source;
- resp->maxIdx = inSz;
- }
- int OcspResponseDecode(OcspResponse* resp, void* cm, void* heap, int noVerify)
- {
- int ret;
- int length = 0;
- word32 idx = 0;
- byte* source = resp->source;
- word32 size = resp->maxIdx;
- word32 oid;
- WOLFSSL_ENTER("OcspResponseDecode");
- /* peel the outer SEQUENCE wrapper */
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- /* First get the responseStatus, an ENUMERATED */
- if (GetEnumerated(source, &idx, &resp->responseStatus) < 0)
- return ASN_PARSE_E;
- if (resp->responseStatus != OCSP_SUCCESSFUL)
- return 0;
- /* Next is an EXPLICIT record called ResponseBytes, OPTIONAL */
- if (idx >= size)
- return ASN_INPUT_E;
- if (source[idx++] != (ASN_CONSTRUCTED | ASN_CONTEXT_SPECIFIC))
- return ASN_PARSE_E;
- if (GetLength(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- /* Get the responseBytes SEQUENCE */
- if (GetSequence(source, &idx, &length, size) < 0)
- return ASN_PARSE_E;
- /* Check ObjectID for the resposeBytes */
- if (GetObjectId(source, &idx, &oid, oidOcspType, size) < 0)
- return ASN_PARSE_E;
- if (oid != OCSP_BASIC_OID)
- return ASN_PARSE_E;
- ret = GetOctetString(source, &idx, &length, size);
- if (ret < 0)
- return ret;
- ret = DecodeBasicOcspResponse(source, &idx, resp, size, cm, heap, noVerify);
- if (ret < 0)
- return ret;
- return 0;
- }
- word32 EncodeOcspRequestExtensions(OcspRequest* req, byte* output, word32 size)
- {
- static const byte NonceObjId[] = { 0x2b, 0x06, 0x01, 0x05, 0x05, 0x07,
- 0x30, 0x01, 0x02 };
- byte seqArray[5][MAX_SEQ_SZ];
- word32 seqSz[5], totalSz = (word32)sizeof(NonceObjId);
- WOLFSSL_ENTER("SetOcspReqExtensions");
- if (!req || !output || !req->nonceSz)
- return 0;
- totalSz += req->nonceSz;
- totalSz += seqSz[0] = SetOctetString(req->nonceSz, seqArray[0]);
- totalSz += seqSz[1] = SetOctetString(req->nonceSz + seqSz[0], seqArray[1]);
- totalSz += seqSz[2] = SetObjectId(sizeof(NonceObjId), seqArray[2]);
- totalSz += seqSz[3] = SetSequence(totalSz, seqArray[3]);
- totalSz += seqSz[4] = SetSequence(totalSz, seqArray[4]);
- if (totalSz > size)
- return 0;
- totalSz = 0;
- XMEMCPY(output + totalSz, seqArray[4], seqSz[4]);
- totalSz += seqSz[4];
- XMEMCPY(output + totalSz, seqArray[3], seqSz[3]);
- totalSz += seqSz[3];
- XMEMCPY(output + totalSz, seqArray[2], seqSz[2]);
- totalSz += seqSz[2];
- XMEMCPY(output + totalSz, NonceObjId, sizeof(NonceObjId));
- totalSz += (word32)sizeof(NonceObjId);
- XMEMCPY(output + totalSz, seqArray[1], seqSz[1]);
- totalSz += seqSz[1];
- XMEMCPY(output + totalSz, seqArray[0], seqSz[0]);
- totalSz += seqSz[0];
- XMEMCPY(output + totalSz, req->nonce, req->nonceSz);
- totalSz += req->nonceSz;
- return totalSz;
- }
- int EncodeOcspRequest(OcspRequest* req, byte* output, word32 size)
- {
- byte seqArray[5][MAX_SEQ_SZ];
- /* The ASN.1 of the OCSP Request is an onion of sequences */
- byte algoArray[MAX_ALGO_SZ];
- byte issuerArray[MAX_ENCODED_DIG_SZ];
- byte issuerKeyArray[MAX_ENCODED_DIG_SZ];
- byte snArray[MAX_SN_SZ];
- byte extArray[MAX_OCSP_EXT_SZ];
- word32 seqSz[5], algoSz, issuerSz, issuerKeySz, extSz, totalSz;
- int i, snSz;
- WOLFSSL_ENTER("EncodeOcspRequest");
- #ifdef NO_SHA
- algoSz = SetAlgoID(SHA256h, algoArray, oidHashType, 0);
- #else
- algoSz = SetAlgoID(SHAh, algoArray, oidHashType, 0);
- #endif
- issuerSz = SetDigest(req->issuerHash, KEYID_SIZE, issuerArray);
- issuerKeySz = SetDigest(req->issuerKeyHash, KEYID_SIZE, issuerKeyArray);
- snSz = SetSerialNumber(req->serial, req->serialSz, snArray, MAX_SN_SZ);
- extSz = 0;
- if (snSz < 0)
- return snSz;
- if (req->nonceSz) {
- /* TLS Extensions use this function too - put extensions after
- * ASN.1: Context Specific [2].
- */
- extSz = EncodeOcspRequestExtensions(req, extArray + 2,
- OCSP_NONCE_EXT_SZ);
- extSz += SetExplicit(2, extSz, extArray);
- }
- totalSz = algoSz + issuerSz + issuerKeySz + snSz;
- for (i = 4; i >= 0; i--) {
- seqSz[i] = SetSequence(totalSz, seqArray[i]);
- totalSz += seqSz[i];
- if (i == 2) totalSz += extSz;
- }
- if (output == NULL)
- return totalSz;
- if (totalSz > size)
- return BUFFER_E;
- totalSz = 0;
- for (i = 0; i < 5; i++) {
- XMEMCPY(output + totalSz, seqArray[i], seqSz[i]);
- totalSz += seqSz[i];
- }
- XMEMCPY(output + totalSz, algoArray, algoSz);
- totalSz += algoSz;
- XMEMCPY(output + totalSz, issuerArray, issuerSz);
- totalSz += issuerSz;
- XMEMCPY(output + totalSz, issuerKeyArray, issuerKeySz);
- totalSz += issuerKeySz;
- XMEMCPY(output + totalSz, snArray, snSz);
- totalSz += snSz;
- if (extSz != 0) {
- XMEMCPY(output + totalSz, extArray, extSz);
- totalSz += extSz;
- }
- return totalSz;
- }
- int InitOcspRequest(OcspRequest* req, DecodedCert* cert, byte useNonce,
- void* heap)
- {
- int ret;
- WOLFSSL_ENTER("InitOcspRequest");
- if (req == NULL)
- return BAD_FUNC_ARG;
- ForceZero(req, sizeof(OcspRequest));
- req->heap = heap;
- if (cert) {
- XMEMCPY(req->issuerHash, cert->issuerHash, KEYID_SIZE);
- XMEMCPY(req->issuerKeyHash, cert->issuerKeyHash, KEYID_SIZE);
- req->serial = (byte*)XMALLOC(cert->serialSz, req->heap,
- DYNAMIC_TYPE_OCSP_REQUEST);
- if (req->serial == NULL)
- return MEMORY_E;
- XMEMCPY(req->serial, cert->serial, cert->serialSz);
- req->serialSz = cert->serialSz;
- if (cert->extAuthInfoSz != 0 && cert->extAuthInfo != NULL) {
- req->url = (byte*)XMALLOC(cert->extAuthInfoSz, req->heap,
- DYNAMIC_TYPE_OCSP_REQUEST);
- if (req->url == NULL) {
- XFREE(req->serial, req->heap, DYNAMIC_TYPE_OCSP);
- return MEMORY_E;
- }
- XMEMCPY(req->url, cert->extAuthInfo, cert->extAuthInfoSz);
- req->urlSz = cert->extAuthInfoSz;
- }
- }
- if (useNonce) {
- WC_RNG rng;
- #ifndef HAVE_FIPS
- ret = wc_InitRng_ex(&rng, req->heap, INVALID_DEVID);
- #else
- ret = wc_InitRng(&rng);
- #endif
- if (ret != 0) {
- WOLFSSL_MSG("\tCannot initialize RNG. Skipping the OSCP Nonce.");
- } else {
- if (wc_RNG_GenerateBlock(&rng, req->nonce, MAX_OCSP_NONCE_SZ) != 0)
- WOLFSSL_MSG("\tCannot run RNG. Skipping the OSCP Nonce.");
- else
- req->nonceSz = MAX_OCSP_NONCE_SZ;
- wc_FreeRng(&rng);
- }
- }
- return 0;
- }
- void FreeOcspRequest(OcspRequest* req)
- {
- WOLFSSL_ENTER("FreeOcspRequest");
- if (req) {
- if (req->serial)
- XFREE(req->serial, req->heap, DYNAMIC_TYPE_OCSP_REQUEST);
- if (req->url)
- XFREE(req->url, req->heap, DYNAMIC_TYPE_OCSP_REQUEST);
- }
- }
- int CompareOcspReqResp(OcspRequest* req, OcspResponse* resp)
- {
- int cmp;
- WOLFSSL_ENTER("CompareOcspReqResp");
- if (req == NULL)
- {
- WOLFSSL_MSG("\tReq missing");
- return -1;
- }
- if (resp == NULL)
- {
- WOLFSSL_MSG("\tResp missing");
- return 1;
- }
- /* Nonces are not critical. The responder may not necessarily add
- * the nonce to the response. */
- if (resp->nonceSz != 0) {
- cmp = req->nonceSz - resp->nonceSz;
- if (cmp != 0)
- {
- WOLFSSL_MSG("\tnonceSz mismatch");
- return cmp;
- }
- cmp = XMEMCMP(req->nonce, resp->nonce, req->nonceSz);
- if (cmp != 0)
- {
- WOLFSSL_MSG("\tnonce mismatch");
- return cmp;
- }
- }
- cmp = XMEMCMP(req->issuerHash, resp->issuerHash, KEYID_SIZE);
- if (cmp != 0)
- {
- WOLFSSL_MSG("\tissuerHash mismatch");
- return cmp;
- }
- cmp = XMEMCMP(req->issuerKeyHash, resp->issuerKeyHash, KEYID_SIZE);
- if (cmp != 0)
- {
- WOLFSSL_MSG("\tissuerKeyHash mismatch");
- return cmp;
- }
- cmp = req->serialSz - resp->status->serialSz;
- if (cmp != 0)
- {
- WOLFSSL_MSG("\tserialSz mismatch");
- return cmp;
- }
- cmp = XMEMCMP(req->serial, resp->status->serial, req->serialSz);
- if (cmp != 0)
- {
- WOLFSSL_MSG("\tserial mismatch");
- return cmp;
- }
- return 0;
- }
- #endif
- /* store WC_SHA hash of NAME */
- WOLFSSL_LOCAL int GetNameHash(const byte* source, word32* idx, byte* hash,
- int maxIdx)
- {
- int length; /* length of all distinguished names */
- int ret;
- word32 dummy;
- WOLFSSL_ENTER("GetNameHash");
- if (source[*idx] == ASN_OBJECT_ID) {
- WOLFSSL_MSG("Trying optional prefix...");
- if (GetLength(source, idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
- *idx += length;
- WOLFSSL_MSG("Got optional prefix");
- }
- /* For OCSP, RFC2560 section 4.1.1 states the issuer hash should be
- * calculated over the entire DER encoding of the Name field, including
- * the tag and length. */
- dummy = *idx;
- if (GetSequence(source, idx, &length, maxIdx) < 0)
- return ASN_PARSE_E;
- #ifdef NO_SHA
- ret = wc_Sha256Hash(source + dummy, length + *idx - dummy, hash);
- #else
- ret = wc_ShaHash(source + dummy, length + *idx - dummy, hash);
- #endif
- *idx += length;
- return ret;
- }
- #ifdef HAVE_CRL
- /* initialize decoded CRL */
- void InitDecodedCRL(DecodedCRL* dcrl, void* heap)
- {
- WOLFSSL_MSG("InitDecodedCRL");
- dcrl->certBegin = 0;
- dcrl->sigIndex = 0;
- dcrl->sigLength = 0;
- dcrl->signatureOID = 0;
- dcrl->certs = NULL;
- dcrl->totalCerts = 0;
- dcrl->heap = heap;
- #ifdef WOLFSSL_HEAP_TEST
- dcrl->heap = (void*)WOLFSSL_HEAP_TEST;
- #endif
- }
- /* free decoded CRL resources */
- void FreeDecodedCRL(DecodedCRL* dcrl)
- {
- RevokedCert* tmp = dcrl->certs;
- WOLFSSL_MSG("FreeDecodedCRL");
- while(tmp) {
- RevokedCert* next = tmp->next;
- XFREE(tmp, dcrl->heap, DYNAMIC_TYPE_REVOKED);
- tmp = next;
- }
- }
- /* Get Revoked Cert list, 0 on success */
- static int GetRevoked(const byte* buff, word32* idx, DecodedCRL* dcrl,
- int maxIdx)
- {
- int len;
- word32 end;
- byte b;
- RevokedCert* rc;
- WOLFSSL_ENTER("GetRevoked");
- if (GetSequence(buff, idx, &len, maxIdx) < 0)
- return ASN_PARSE_E;
- end = *idx + len;
- rc = (RevokedCert*)XMALLOC(sizeof(RevokedCert), dcrl->heap,
- DYNAMIC_TYPE_REVOKED);
- if (rc == NULL) {
- WOLFSSL_MSG("Alloc Revoked Cert failed");
- return MEMORY_E;
- }
- if (GetSerialNumber(buff, idx, rc->serialNumber, &rc->serialSz,
- maxIdx) < 0) {
- XFREE(rc, dcrl->heap, DYNAMIC_TYPE_REVOKED);
- return ASN_PARSE_E;
- }
- /* add to list */
- rc->next = dcrl->certs;
- dcrl->certs = rc;
- dcrl->totalCerts++;
- /* get date */
- b = buff[*idx];
- *idx += 1;
- if (b != ASN_UTC_TIME && b != ASN_GENERALIZED_TIME) {
- WOLFSSL_MSG("Expecting Date");
- return ASN_PARSE_E;
- }
- if (GetLength(buff, idx, &len, maxIdx) < 0)
- return ASN_PARSE_E;
- /* skip for now */
- *idx += len;
- if (*idx != end) /* skip extensions */
- *idx = end;
- return 0;
- }
- /* Get CRL Signature, 0 on success */
- static int GetCRL_Signature(const byte* source, word32* idx, DecodedCRL* dcrl,
- int maxIdx)
- {
- int length;
- int ret;
- WOLFSSL_ENTER("GetCRL_Signature");
- ret = CheckBitString(source, idx, &length, maxIdx, 1, NULL);
- if (ret != 0)
- return ret;
- dcrl->sigLength = length;
- dcrl->signature = (byte*)&source[*idx];
- *idx += dcrl->sigLength;
- return 0;
- }
- int VerifyCRL_Signature(SignatureCtx* sigCtx, const byte* toBeSigned,
- word32 tbsSz, const byte* signature, word32 sigSz,
- word32 signatureOID, Signer *ca, void* heap)
- {
- /* try to confirm/verify signature */
- #ifndef IGNORE_KEY_EXTENSIONS
- if ((ca->keyUsage & KEYUSE_CRL_SIGN) == 0) {
- WOLFSSL_MSG("CA cannot sign CRLs");
- return ASN_CRL_NO_SIGNER_E;
- }
- #endif /* IGNORE_KEY_EXTENSIONS */
- InitSignatureCtx(sigCtx, heap, INVALID_DEVID);
- if (ConfirmSignature(sigCtx, toBeSigned, tbsSz, ca->publicKey,
- ca->pubKeySize, ca->keyOID, signature, sigSz,
- signatureOID) != 0) {
- WOLFSSL_MSG("CRL Confirm signature failed");
- return ASN_CRL_CONFIRM_E;
- }
- return 0;
- }
- /* prase crl buffer into decoded state, 0 on success */
- int ParseCRL(DecodedCRL* dcrl, const byte* buff, word32 sz, void* cm)
- {
- int version, len, doNextDate = 1;
- word32 oid, idx = 0, dateIdx;
- Signer* ca = NULL;
- SignatureCtx sigCtx;
- WOLFSSL_MSG("ParseCRL");
- /* raw crl hash */
- /* hash here if needed for optimized comparisons
- * wc_Sha sha;
- * wc_InitSha(&sha);
- * wc_ShaUpdate(&sha, buff, sz);
- * wc_ShaFinal(&sha, dcrl->crlHash); */
- if (GetSequence(buff, &idx, &len, sz) < 0)
- return ASN_PARSE_E;
- dcrl->certBegin = idx;
- if (GetSequence(buff, &idx, &len, sz) < 0)
- return ASN_PARSE_E;
- dcrl->sigIndex = len + idx;
- /* may have version */
- if (buff[idx] == ASN_INTEGER) {
- if (GetMyVersion(buff, &idx, &version, sz) < 0)
- return ASN_PARSE_E;
- }
- if (GetAlgoId(buff, &idx, &oid, oidIgnoreType, sz) < 0)
- return ASN_PARSE_E;
- if (GetNameHash(buff, &idx, dcrl->issuerHash, sz) < 0)
- return ASN_PARSE_E;
- if (GetBasicDate(buff, &idx, dcrl->lastDate, &dcrl->lastDateFormat, sz) < 0)
- return ASN_PARSE_E;
- dateIdx = idx;
- if (GetBasicDate(buff, &idx, dcrl->nextDate, &dcrl->nextDateFormat, sz) < 0)
- {
- #ifndef WOLFSSL_NO_CRL_NEXT_DATE
- (void)dateIdx;
- return ASN_PARSE_E;
- #else
- dcrl->nextDateFormat = ASN_OTHER_TYPE; /* skip flag */
- doNextDate = 0;
- idx = dateIdx;
- #endif
- }
- if (doNextDate) {
- #ifndef NO_ASN_TIME
- if (!XVALIDATE_DATE(dcrl->nextDate, dcrl->nextDateFormat, AFTER)) {
- WOLFSSL_MSG("CRL after date is no longer valid");
- return ASN_AFTER_DATE_E;
- }
- #endif
- }
- if (idx != dcrl->sigIndex && buff[idx] != CRL_EXTENSIONS) {
- if (GetSequence(buff, &idx, &len, sz) < 0)
- return ASN_PARSE_E;
- len += idx;
- while (idx < (word32)len) {
- if (GetRevoked(buff, &idx, dcrl, sz) < 0)
- return ASN_PARSE_E;
- }
- }
- if (idx != dcrl->sigIndex)
- idx = dcrl->sigIndex; /* skip extensions */
- if (GetAlgoId(buff, &idx, &dcrl->signatureOID, oidSigType, sz) < 0)
- return ASN_PARSE_E;
- if (GetCRL_Signature(buff, &idx, dcrl, sz) < 0)
- return ASN_PARSE_E;
- /* openssl doesn't add skid by default for CRLs cause firefox chokes
- we're not assuming it's available yet */
- #if !defined(NO_SKID) && defined(CRL_SKID_READY)
- if (dcrl->extAuthKeyIdSet)
- ca = GetCA(cm, dcrl->extAuthKeyId);
- if (ca == NULL)
- ca = GetCAByName(cm, dcrl->issuerHash);
- #else
- ca = GetCA(cm, dcrl->issuerHash);
- #endif /* !NO_SKID && CRL_SKID_READY */
- WOLFSSL_MSG("About to verify CRL signature");
- if (ca == NULL) {
- WOLFSSL_MSG("Did NOT find CRL issuer CA");
- return ASN_CRL_NO_SIGNER_E;
- }
- WOLFSSL_MSG("Found CRL issuer CA");
- return VerifyCRL_Signature(&sigCtx, buff + dcrl->certBegin,
- dcrl->sigIndex - dcrl->certBegin, dcrl->signature, dcrl->sigLength,
- dcrl->signatureOID, ca, dcrl->heap);
- }
- #endif /* HAVE_CRL */
- #undef ERROR_OUT
- #endif /* !NO_ASN */
- #ifdef WOLFSSL_SEP
- #endif /* WOLFSSL_SEP */
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