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- /* wc_pkcs11.c
- *
- * Copyright (C) 2006-2020 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>
- #ifdef HAVE_PKCS11
- #include <dlfcn.h>
- #include <wolfssl/wolfcrypt/wc_pkcs11.h>
- #include <wolfssl/wolfcrypt/error-crypt.h>
- #include <wolfssl/wolfcrypt/asn.h>
- #include <wolfssl/wolfcrypt/logging.h>
- #ifndef NO_RSA
- #include <wolfssl/wolfcrypt/rsa.h>
- #endif
- #ifdef NO_INLINE
- #include <wolfssl/wolfcrypt/misc.h>
- #else
- #define WOLFSSL_MISC_INCLUDED
- #include <wolfcrypt/src/misc.c>
- #endif
- #if defined(NO_PKCS11_RSA) && !defined(NO_RSA)
- #define NO_RSA
- #endif
- #if defined(NO_PKCS11_ECC) && defined(HAVE_ECC)
- #undef HAVE_ECC
- #endif
- #if defined(NO_PKCS11_AES) && !defined(NO_AES)
- #define NO_AES
- #endif
- #if defined(NO_PKCS11_AESGCM) && defined(HAVE_AESGCM)
- #undef HAVE_AESGCM
- #endif
- #if defined(NO_PKCS11_AESCBC) && defined(HAVE_AES_CBC)
- #undef HAVE_AES_CBC
- #endif
- #if defined(NO_PKCS11_HMAC) && !defined(NO_HMAC)
- #define NO_HMAC
- #endif
- #if defined(NO_PKCS11_RNG) && !defined(WC_NO_RNG)
- #define WC_NO_RNG
- #endif
- /* Maximim length of the EC parameter string. */
- #define MAX_EC_PARAM_LEN 16
- #if defined(HAVE_ECC) && !defined(NO_PKCS11_ECDH)
- /* Pointer to false required for templates. */
- static CK_BBOOL ckFalse = CK_FALSE;
- #endif
- #if !defined(NO_RSA) || defined(HAVE_ECC) || (!defined(NO_AES) && \
- (defined(HAVE_AESGCM) || defined(HAVE_AES_CBC))) || !defined(NO_HMAC)
- /* Pointer to true required for templates. */
- static CK_BBOOL ckTrue = CK_TRUE;
- #endif
- #ifndef NO_RSA
- /* Pointer to RSA key type required for templates. */
- static CK_KEY_TYPE rsaKeyType = CKK_RSA;
- #endif
- #ifdef HAVE_ECC
- /* Pointer to EC key type required for templates. */
- static CK_KEY_TYPE ecKeyType = CKK_EC;
- #endif
- #if !defined(NO_RSA) || defined(HAVE_ECC)
- /* Pointer to public key class required for templates. */
- static CK_OBJECT_CLASS pubKeyClass = CKO_PUBLIC_KEY;
- /* Pointer to private key class required for templates. */
- static CK_OBJECT_CLASS privKeyClass = CKO_PRIVATE_KEY;
- #endif
- #if (!defined(NO_AES) && (defined(HAVE_AESGCM) || defined(HAVE_AES_CBC))) || \
- !defined(NO_HMAC) || (defined(HAVE_ECC) && !defined(NO_PKCS11_ECDH))
- /* Pointer to secret key class required for templates. */
- static CK_OBJECT_CLASS secretKeyClass = CKO_SECRET_KEY;
- #endif
- #ifdef WOLFSSL_DEBUG_PKCS11
- /* Formats of template items - used to instruct how to log information. */
- enum PKCS11_TYPE_FORMATS {
- PKCS11_FMT_BOOLEAN,
- PKCS11_FMT_CLASS,
- PKCS11_FMT_KEY_TYPE,
- PKCS11_FMT_STRING,
- PKCS11_FMT_NUMBER,
- PKCS11_FMT_DATA,
- PKCS11_FMT_POINTER
- };
- /* Information for logging a template item. */
- static struct PKCS11_TYPE_STR {
- /** Attribute type in template. */
- CK_ATTRIBUTE_TYPE type;
- /** String to log corresponding to attribute type. */
- const char* str;
- /** Format of data associated with template item. */
- int format;
- } typeStr[] = {
- { CKA_CLASS, "CKA_CLASS", PKCS11_FMT_CLASS },
- { CKA_TOKEN, "CKA_TOKEN", PKCS11_FMT_POINTER },
- { CKA_PRIVATE, "CKA_PRIVATE", PKCS11_FMT_BOOLEAN },
- { CKA_LABEL, "CKA_LABEL", PKCS11_FMT_STRING },
- { CKA_VALUE, "CKA_VALUE", PKCS11_FMT_DATA },
- { CKA_OBJECT_ID, "CKA_OBJECT_ID", PKCS11_FMT_POINTER },
- { CKA_KEY_TYPE, "CKA_KEY_TYPE", PKCS11_FMT_KEY_TYPE },
- { CKA_ID, "CKA_ID", PKCS11_FMT_DATA },
- { CKA_SENSITIVE, "CKA_SENSITIVE", PKCS11_FMT_BOOLEAN },
- { CKA_ENCRYPT, "CKA_ENCRYPT", PKCS11_FMT_BOOLEAN },
- { CKA_DECRYPT, "CKA_DECRYPT", PKCS11_FMT_BOOLEAN },
- { CKA_SIGN, "CKA_SIGN", PKCS11_FMT_BOOLEAN },
- { CKA_VERIFY, "CKA_VERIFY", PKCS11_FMT_BOOLEAN },
- { CKA_DERIVE, "CKA_DERIVE", PKCS11_FMT_BOOLEAN },
- { CKA_MODULUS_BITS, "CKA_MODULUS_BITS", PKCS11_FMT_NUMBER },
- { CKA_MODULUS, "CKA_MODULUS", PKCS11_FMT_DATA },
- { CKA_PUBLIC_EXPONENT, "CKA_PUBLIC_EXPONENT", PKCS11_FMT_DATA },
- { CKA_PRIVATE_EXPONENT, "CKA_PRIVATE_EXPONENT", PKCS11_FMT_DATA },
- { CKA_PRIME_1, "CKA_PRIME_1", PKCS11_FMT_DATA },
- { CKA_PRIME_2, "CKA_PRIME_2", PKCS11_FMT_DATA },
- { CKA_EXPONENT_1, "CKA_EXPONENT_1", PKCS11_FMT_DATA },
- { CKA_EXPONENT_2, "CKA_EXPONENT_2", PKCS11_FMT_DATA },
- { CKA_VALUE_LEN, "CKA_VALUE_LEN", PKCS11_FMT_NUMBER },
- { CKA_COEFFICIENT, "CKA_COEFFICIENT", PKCS11_FMT_DATA },
- { CKA_EXTRACTABLE, "CKA_EXTRACTABLE", PKCS11_FMT_BOOLEAN },
- { CKA_EC_PARAMS, "CKA_EC_PARAMS", PKCS11_FMT_DATA },
- { CKA_EC_POINT, "CKA_EC_POINT", PKCS11_FMT_DATA },
- };
- /* Count of known attribute types for logging. */
- #define PKCS11_TYPE_STR_CNT ((int)(sizeof(typeStr) / sizeof(*typeStr)))
- /*
- * Dump/log the PKCS #11 template.
- *
- * This is only for debugging purposes. Only the values needed are recognised.
- *
- * @param [in] templ PKCS #11 template to dump.
- * @param [in] cnt Count of template entries.
- */
- static void pkcs11_dump_template(CK_ATTRIBUTE* templ, CK_ULONG cnt)
- {
- CK_ULONG i;
- int j;
- char line[80];
- char type[25];
- int format;
- CK_KEY_TYPE keyType;
- CK_OBJECT_CLASS keyClass;
- for (i = 0; i < cnt; i++) {
- format = PKCS11_FMT_POINTER;
- for (j = 0; j < PKCS11_TYPE_STR_CNT; j++) {
- if (templ[i].type == typeStr[j].type) {
- XSNPRINTF(type, sizeof(type), "%s", typeStr[j].str);
- format = typeStr[j].format;
- break;
- }
- }
- if (j == PKCS11_TYPE_STR_CNT) {
- XSNPRINTF(type, sizeof(type), "%08lxUL", templ[i].type);
- }
- switch (format) {
- case PKCS11_FMT_BOOLEAN:
- #if !defined(NO_RSA) || defined(HAVE_ECC) || (!defined(NO_AES) && \
- (defined(HAVE_AESGCM) || defined(HAVE_AES_CBC))) || !defined(NO_HMAC)
- if (templ[i].pValue == &ckTrue) {
- XSNPRINTF(line, sizeof(line), "%25s: TRUE", type);
- WOLFSSL_MSG(line);
- }
- else
- #endif
- #if defined(HAVE_ECC) && !defined(NO_PKCS11_ECDH)
- if (templ[i].pValue == &ckFalse) {
- XSNPRINTF(line, sizeof(line), "%25s: FALSE", type);
- WOLFSSL_MSG(line);
- }
- else
- #endif
- {
- XSNPRINTF(line, sizeof(line), "%25s: INVALID (%p)", type,
- templ[i].pValue);
- WOLFSSL_MSG(line);
- }
- break;
- case PKCS11_FMT_CLASS:
- keyClass = *(CK_OBJECT_CLASS*)templ[i].pValue;
- if (keyClass == CKO_PUBLIC_KEY) {
- XSNPRINTF(line, sizeof(line), "%25s: PUBLIC", type);
- WOLFSSL_MSG(line);
- }
- else if (keyClass == CKO_PRIVATE_KEY) {
- XSNPRINTF(line, sizeof(line), "%25s: PRIVATE", type);
- WOLFSSL_MSG(line);
- }
- else if (keyClass == CKO_SECRET_KEY) {
- XSNPRINTF(line, sizeof(line), "%25s: SECRET", type);
- WOLFSSL_MSG(line);
- }
- else
- {
- XSNPRINTF(line, sizeof(line), "%25s: UNKNOWN (%p)", type,
- templ[i].pValue);
- WOLFSSL_MSG(line);
- }
- break;
- case PKCS11_FMT_KEY_TYPE:
- keyType = *(CK_KEY_TYPE*)templ[i].pValue;
- switch (keyType) {
- case CKK_RSA:
- XSNPRINTF(line, sizeof(line), "%25s: RSA", type);
- break;
- case CKK_DH:
- XSNPRINTF(line, sizeof(line), "%25s: DH", type);
- break;
- case CKK_EC:
- XSNPRINTF(line, sizeof(line), "%25s: EC", type);
- break;
- case CKK_GENERIC_SECRET:
- XSNPRINTF(line, sizeof(line), "%25s: GENERIC_SECRET", type);
- break;
- case CKK_AES:
- XSNPRINTF(line, sizeof(line), "%25s: AES", type);
- break;
- case CKK_MD5_HMAC:
- XSNPRINTF(line, sizeof(line), "%25s: MD5_HMAC", type);
- break;
- case CKK_SHA_1_HMAC:
- XSNPRINTF(line, sizeof(line), "%25s: SHA_1_HMAC", type);
- break;
- case CKK_SHA256_HMAC:
- XSNPRINTF(line, sizeof(line), "%25s: SHA256_HMAC", type);
- break;
- case CKK_SHA384_HMAC:
- XSNPRINTF(line, sizeof(line), "%25s: SHA384_HMAC", type);
- break;
- case CKK_SHA512_HMAC:
- XSNPRINTF(line, sizeof(line), "%25s: SHA512_HMAC", type);
- break;
- case CKK_SHA224_HMAC:
- XSNPRINTF(line, sizeof(line), "%25s: SHA224_HMAC", type);
- break;
- default:
- XSNPRINTF(line, sizeof(line), "%25s: UNKNOWN (%08lx)", type,
- keyType);
- break;
- }
- WOLFSSL_MSG(line);
- break;
- case PKCS11_FMT_STRING:
- XSNPRINTF(line, sizeof(line), "%25s: %s", type,
- (char*)templ[i].pValue);
- WOLFSSL_MSG(line);
- break;
- case PKCS11_FMT_NUMBER:
- if (templ[i].ulValueLen <= 1) {
- XSNPRINTF(line, sizeof(line), "%25s: 0x%02x (%d)", type,
- *(byte*)templ[i].pValue, *(byte*)templ[i].pValue);
- }
- else if (templ[i].ulValueLen <= 2) {
- XSNPRINTF(line, sizeof(line), "%25s: 0x%04x (%d)", type,
- *(word16*)templ[i].pValue, *(word16*)templ[i].pValue);
- }
- else if (templ[i].ulValueLen <= 4) {
- XSNPRINTF(line, sizeof(line), "%25s: 0x%08x (%d)", type,
- *(word32*)templ[i].pValue, *(word32*)templ[i].pValue);
- }
- else if (templ[i].ulValueLen <= 8) {
- XSNPRINTF(line, sizeof(line), "%25s: 0x%016lx (%ld)", type,
- *(word64*)templ[i].pValue, *(word64*)templ[i].pValue);
- }
- else {
- XSNPRINTF(line, sizeof(line), "%25s: INVALID (%ld)", type,
- templ[i].ulValueLen);
- }
- WOLFSSL_MSG(line);
- break;
- case PKCS11_FMT_DATA:
- XSNPRINTF(line, sizeof(line), "%25s: %ld", type,
- templ[i].ulValueLen);
- WOLFSSL_MSG(line);
- if (templ[i].pValue == NULL) {
- XSNPRINTF(line, sizeof(line), "%27s(nil)", "");
- WOLFSSL_MSG(line);
- break;
- }
- XSNPRINTF(line, sizeof(line), "%27s", "");
- for (j = 0; j < (int)templ[i].ulValueLen && j < 80; j++) {
- char hex[6];
- XSNPRINTF(hex, sizeof(hex), "0x%02x,",
- ((byte*)templ[i].pValue)[j]);
- XSTRNCAT(line, hex, 5);
- if ((j % 8) == 7) {
- WOLFSSL_MSG(line);
- XSNPRINTF(line, sizeof(line), "%27s", "");
- }
- }
- if (j == (int)templ[i].ulValueLen) {
- if ((j % 8) != 0) {
- WOLFSSL_MSG(line);
- }
- }
- else if (j < (int)templ[i].ulValueLen) {
- XSNPRINTF(line, sizeof(line), "%27s...", "");
- WOLFSSL_MSG(line);
- }
- break;
- case PKCS11_FMT_POINTER:
- XSNPRINTF(line, sizeof(line), "%25s: %p %ld", type, templ[i].pValue,
- templ[i].ulValueLen);
- WOLFSSL_MSG(line);
- break;
- }
- }
- }
- /*
- * Log a PKCS #11 return value with the name of function called.
- *
- * This is only for debugging purposes. Only the values needed are recognised.
- *
- * @param [in] op PKCS #11 operation that was attempted.
- * @param [in] rv PKCS #11 return value.
- */
- static void pkcs11_rv(const char* op, CK_RV rv)
- {
- char line[80];
- if (rv == CKR_OK) {
- XSNPRINTF(line, 80, "%s: OK", op);
- }
- else if (rv == CKR_MECHANISM_INVALID) {
- XSNPRINTF(line, 80, "%s: MECHANISM_INVALID", op);
- }
- else if (rv == CKR_SIGNATURE_INVALID) {
- XSNPRINTF(line, 80, "%s: SIGNATURE_INVALID", op);
- }
- else {
- XSNPRINTF(line, 80, "%s: %08lxUL (FAILED)", op, rv);
- }
- WOLFSSL_MSG(line);
- }
- /*
- * Log a value from a PKCS #11 operation.
- *
- * This is only for debugging purposes.
- *
- * @param [in] op PKCS #11 operation that was attempted.
- * @param [in] val Value to log.
- */
- static void pkcs11_val(const char* op, CK_ULONG val)
- {
- char line[80];
- XSNPRINTF(line, 80, "%s: %ld", op, val);
- WOLFSSL_MSG(line);
- }
- #endif
- /**
- * Load library, get function list and initialize PKCS#11.
- *
- * @param [in] dev Device object.
- * @param [in] library Library name including path.
- * @return BAD_FUNC_ARG when dev or library are NULL pointers.
- * @return BAD_PATH_ERROR when dynamic library cannot be opened.
- * @return WC_INIT_E when the initialization PKCS#11 fails.
- * @return WC_HW_E when unable to get PKCS#11 function list.
- * @return 0 on success.
- */
- int wc_Pkcs11_Initialize(Pkcs11Dev* dev, const char* library, void* heap)
- {
- int ret = 0;
- void* func;
- CK_C_INITIALIZE_ARGS args;
- if (dev == NULL || library == NULL)
- ret = BAD_FUNC_ARG;
- if (ret == 0) {
- dev->heap = heap;
- dev->dlHandle = dlopen(library, RTLD_NOW | RTLD_LOCAL);
- if (dev->dlHandle == NULL) {
- WOLFSSL_MSG(dlerror());
- ret = BAD_PATH_ERROR;
- }
- }
- if (ret == 0) {
- dev->func = NULL;
- func = dlsym(dev->dlHandle, "C_GetFunctionList");
- if (func == NULL)
- ret = WC_HW_E;
- }
- if (ret == 0) {
- if (((CK_C_GetFunctionList)func)(&dev->func) != CKR_OK)
- ret = WC_HW_E;
- }
- if (ret == 0) {
- XMEMSET(&args, 0x00, sizeof(args));
- args.flags = CKF_OS_LOCKING_OK;
- if (dev->func->C_Initialize(&args) != CKR_OK)
- ret = WC_INIT_E;
- }
- if (ret != 0)
- wc_Pkcs11_Finalize(dev);
- return ret;
- }
- /**
- * Close the Pkcs#11 library.
- *
- * @param [in] dev Device object.
- */
- void wc_Pkcs11_Finalize(Pkcs11Dev* dev)
- {
- if (dev != NULL && dev->dlHandle != NULL) {
- if (dev->func != NULL) {
- dev->func->C_Finalize(NULL);
- dev->func = NULL;
- }
- dlclose(dev->dlHandle);
- dev->dlHandle = NULL;
- }
- }
- /**
- * Set up a token for use.
- *
- * @param [in] token Token object.
- * @param [in] dev PKCS#11 device object.
- * @param [in] slotId Slot number of the token.<br>
- * Passing -1 uses the first available slot.
- * @param [in] tokenName Name of token to initialize.
- * @param [in] userPin PIN to use to login as user.
- * @param [in] userPinSz Number of bytes in PIN.
- * @return BAD_FUNC_ARG when token, dev and/or tokenName is NULL.
- * @return WC_INIT_E when initializing token fails.
- * @return WC_HW_E when another PKCS#11 library call fails.
- * @return -1 when no slot available.
- * 0 on success.
- */
- int wc_Pkcs11Token_Init(Pkcs11Token* token, Pkcs11Dev* dev, int slotId,
- const char* tokenName, const unsigned char* userPin, int userPinSz)
- {
- int ret = 0;
- CK_RV rv;
- CK_SLOT_ID* slot = NULL;
- CK_ULONG slotCnt = 0;
- if (token == NULL || dev == NULL || tokenName == NULL)
- ret = BAD_FUNC_ARG;
- if (ret == 0) {
- if (slotId < 0) {
- /* Use first available slot with a token. */
- rv = dev->func->C_GetSlotList(CK_TRUE, NULL, &slotCnt);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetSlotList", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- if (ret == 0) {
- slot = (CK_SLOT_ID*)XMALLOC(slotCnt * sizeof(*slot), dev->heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (slot == NULL)
- ret = MEMORY_E;
- }
- if (ret == 0) {
- rv = dev->func->C_GetSlotList(CK_TRUE, slot, &slotCnt);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetSlotList", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- if (slotCnt > 0)
- slotId = (int)slot[0];
- else
- ret = WC_HW_E;
- }
- }
- }
- if (ret == 0) {
- token->func = dev->func;
- token->slotId = (CK_SLOT_ID)slotId;
- token->handle = NULL_PTR;
- token->userPin = (CK_UTF8CHAR_PTR)userPin;
- token->userPinSz = (CK_ULONG)userPinSz;
- }
- if (slot != NULL)
- XFREE(slot, dev->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- /**
- * Finalize token.
- * Closes all sessions on token.
- *
- * @param [in] token Token object.
- */
- void wc_Pkcs11Token_Final(Pkcs11Token* token)
- {
- if (token != NULL && token->func != NULL) {
- token->func->C_CloseAllSessions(token->slotId);
- token->handle = NULL_PTR;
- ForceZero(token->userPin, (word32)token->userPinSz);
- }
- }
- /**
- * Open a session on a token.
- *
- * @param [in] token Token object.
- * @param [in] session Session object.
- * @param [in] readWrite Boolean indicating to open session for Read/Write.
- * @return BAD_FUNC_ARG when token or session is NULL.
- * @return WC_HW_E when opening the session fails.
- * @return 0 on success.
- */
- static int Pkcs11OpenSession(Pkcs11Token* token, Pkcs11Session* session,
- int readWrite)
- {
- int ret = 0;
- CK_RV rv;
- if (token == NULL || session == NULL)
- ret = BAD_FUNC_ARG;
- if (ret == 0) {
- if (token->handle != NULL_PTR)
- session->handle = token->handle;
- else {
- /* Create a new session. */
- CK_FLAGS flags = CKF_SERIAL_SESSION;
- if (readWrite)
- flags |= CKF_RW_SESSION;
- rv = token->func->C_OpenSession(token->slotId, flags,
- (CK_VOID_PTR)NULL, (CK_NOTIFY)NULL,
- &session->handle);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_OpenSession", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- if (ret == 0 && token->userPin != NULL) {
- rv = token->func->C_Login(session->handle, CKU_USER,
- token->userPin, token->userPinSz);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_Login", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- }
- }
- if (ret == 0) {
- session->func = token->func;
- session->slotId = token->slotId;
- }
- return ret;
- }
- /**
- * Close a session on a token.
- * Won't close a session created externally.
- *
- * @param [in] token Token object.
- * @param [in] session Session object.
- */
- static void Pkcs11CloseSession(Pkcs11Token* token, Pkcs11Session* session)
- {
- if (token != NULL && session != NULL && token->handle != session->handle) {
- if (token->userPin != NULL)
- session->func->C_Logout(session->handle);
- session->func->C_CloseSession(session->handle);
- }
- }
- /**
- * Open a session on the token to be used for all operations.
- *
- * @param [in] token Token object.
- * @param [in] readWrite Boolean indicating to open session for Read/Write.
- * @return BAD_FUNC_ARG when token is NULL.
- * @return WC_HW_E when opening the session fails.
- * @return 0 on success.
- */
- int wc_Pkcs11Token_Open(Pkcs11Token* token, int readWrite)
- {
- int ret = 0;
- Pkcs11Session session;
- if (token == NULL)
- ret = BAD_FUNC_ARG;
- if (ret == 0) {
- ret = Pkcs11OpenSession(token, &session, readWrite);
- token->handle = session.handle;
- }
- return ret;
- }
- /**
- * Close the token's session.
- * All object, like keys, will be destroyed.
- *
- * @param [in] token Token object.
- */
- void wc_Pkcs11Token_Close(Pkcs11Token* token)
- {
- Pkcs11Session session;
- if (token != NULL) {
- session.func = token->func;
- session.handle = token->handle;
- token->handle = NULL_PTR;
- Pkcs11CloseSession(token, &session);
- }
- }
- #if (!defined(NO_AES) && (defined(HAVE_AESGCM) || defined(HAVE_AES_CBC))) || \
- !defined(NO_HMAC)
- /*
- * Create a secret key.
- *
- * @param [out] key Handle to key object.
- * @param [in] session Session object.
- * @param [in] keyType Type of secret key to create.
- * @param [in] data Data of the secret key.
- * @param [in] len Length of data in bytes.
- * @param [in] id Identifier to set against key.
- * @param [in] idLen Length of identifier.
- * @param [in] label Label to set against key.
- * @param [in] labelLen Length of label.
- * @param [in] op Operation to support with key.
- * @return WC_HW_E when another PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11CreateSecretKey(CK_OBJECT_HANDLE* key, Pkcs11Session* session,
- CK_KEY_TYPE keyType, unsigned char* data,
- int len, unsigned char* id, int idLen,
- char* label, int labelLen, int op)
- {
- int ret = 0;
- CK_RV rv;
- /* Empty entries for optional label/ID. */
- CK_ATTRIBUTE keyTemplateEncDec[] = {
- { CKA_CLASS, &secretKeyClass, sizeof(secretKeyClass) },
- { CKA_KEY_TYPE, &keyType, sizeof(keyType) },
- { CKA_ENCRYPT, &ckTrue, sizeof(ckTrue) },
- { CKA_DECRYPT, &ckTrue, sizeof(ckTrue) },
- { CKA_VALUE, NULL, 0 },
- { 0, NULL, 0 },
- { 0, NULL, 0 }
- };
- /* Empty entries for optional label/ID. */
- CK_ATTRIBUTE keyTemplateSignVfy[] = {
- { CKA_CLASS, &secretKeyClass, sizeof(secretKeyClass) },
- { CKA_KEY_TYPE, &keyType, sizeof(keyType) },
- { CKA_SIGN, &ckTrue, sizeof(ckTrue) },
- { CKA_VERIFY, &ckTrue, sizeof(ckTrue) },
- { CKA_VALUE, NULL, 0 },
- { 0, NULL, 0 },
- { 0, NULL, 0 }
- };
- CK_ATTRIBUTE* keyTemplate = NULL;
- /* 5 mandatory entries + 2 optional. */
- int keyTmplCnt = 5;
- WOLFSSL_MSG("PKCS#11: Create Secret Key");
- if (op == CKA_ENCRYPT || op == CKA_DECRYPT) {
- keyTemplate = keyTemplateEncDec;
- }
- else if (op == CKA_SIGN) {
- keyTemplate = keyTemplateSignVfy;
- }
- else {
- WOLFSSL_MSG("PKCS#11: Invalid operation type");
- ret = WC_HW_E;
- }
- if (ret == 0) {
- /* Set the secret to store. */
- keyTemplate[keyTmplCnt-1].pValue = data;
- keyTemplate[keyTmplCnt-1].ulValueLen = (CK_ULONG)len;
- if (labelLen > 0) {
- keyTemplate[keyTmplCnt].type = CKA_LABEL;
- keyTemplate[keyTmplCnt].pValue = label;
- keyTemplate[keyTmplCnt].ulValueLen = labelLen;
- keyTmplCnt++;
- }
- if (idLen > 0) {
- keyTemplate[keyTmplCnt].type = CKA_ID;
- keyTemplate[keyTmplCnt].pValue = id;
- keyTemplate[keyTmplCnt].ulValueLen = idLen;
- keyTmplCnt++;
- }
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Secret Key");
- pkcs11_dump_template(keyTemplate, keyTmplCnt);
- #endif
- /* Create an object containing key data for device to use. */
- rv = session->func->C_CreateObject(session->handle, keyTemplate,
- keyTmplCnt, key);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_CreateObject", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- return ret;
- }
- #endif
- #ifndef NO_RSA
- /**
- * Create a PKCS#11 object containing the RSA private key data.
- *
- * @param [out] privateKey Handle to private key object.
- * @param [in] session Session object.
- * @param [in] rsaKey RSA key with private key data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11CreateRsaPrivateKey(CK_OBJECT_HANDLE* privateKey,
- Pkcs11Session* session,
- RsaKey* rsaKey, int permanent)
- {
- int ret = 0;
- CK_RV rv;
- /* Empty entries for optional label/ID. */
- CK_ATTRIBUTE keyTemplate[] = {
- { CKA_CLASS, &privKeyClass, sizeof(privKeyClass) },
- { CKA_KEY_TYPE, &rsaKeyType, sizeof(rsaKeyType) },
- { CKA_DECRYPT, &ckTrue, sizeof(ckTrue) },
- { CKA_SIGN, &ckTrue, sizeof(ckTrue) },
- { CKA_MODULUS, NULL, 0 },
- { CKA_PRIVATE_EXPONENT, NULL, 0 },
- { CKA_PRIME_1, NULL, 0 },
- { CKA_PRIME_2, NULL, 0 },
- { CKA_EXPONENT_1, NULL, 0 },
- { CKA_EXPONENT_2, NULL, 0 },
- { CKA_COEFFICIENT, NULL, 0 },
- { CKA_PUBLIC_EXPONENT, NULL, 0 },
- { 0, NULL, 0 },
- { 0, NULL, 0 }
- };
- /* Mandatory entries + 2 optional. */
- CK_ULONG keyTmplCnt = sizeof(keyTemplate) / sizeof(*keyTemplate) - 2;
- /* Set the modulus and private key data. */
- keyTemplate[ 4].pValue = rsaKey->n.raw.buf;
- keyTemplate[ 4].ulValueLen = rsaKey->n.raw.len;
- keyTemplate[ 5].pValue = rsaKey->d.raw.buf;
- keyTemplate[ 5].ulValueLen = rsaKey->d.raw.len;
- keyTemplate[ 6].pValue = rsaKey->p.raw.buf;
- keyTemplate[ 6].ulValueLen = rsaKey->p.raw.len;
- keyTemplate[ 7].pValue = rsaKey->q.raw.buf;
- keyTemplate[ 7].ulValueLen = rsaKey->q.raw.len;
- keyTemplate[ 8].pValue = rsaKey->dP.raw.buf;
- keyTemplate[ 8].ulValueLen = rsaKey->dP.raw.len;
- keyTemplate[ 9].pValue = rsaKey->dQ.raw.buf;
- keyTemplate[ 9].ulValueLen = rsaKey->dQ.raw.len;
- keyTemplate[10].pValue = rsaKey->u.raw.buf;
- keyTemplate[10].ulValueLen = rsaKey->u.raw.len;
- keyTemplate[11].pValue = rsaKey->e.raw.buf;
- keyTemplate[11].ulValueLen = rsaKey->e.raw.len;
- if (permanent && rsaKey->labelLen > 0) {
- keyTemplate[keyTmplCnt].type = CKA_LABEL;
- keyTemplate[keyTmplCnt].pValue = rsaKey->label;
- keyTemplate[keyTmplCnt].ulValueLen = rsaKey->labelLen;
- keyTmplCnt++;
- }
- if (permanent && rsaKey->idLen > 0) {
- keyTemplate[keyTmplCnt].type = CKA_ID;
- keyTemplate[keyTmplCnt].pValue = rsaKey->id;
- keyTemplate[keyTmplCnt].ulValueLen = rsaKey->idLen;
- keyTmplCnt++;
- }
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("RSA Private Key");
- pkcs11_dump_template(keyTemplate, keyTmplCnt);
- #endif
- rv = session->func->C_CreateObject(session->handle, keyTemplate, keyTmplCnt,
- privateKey);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_CreateObject", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- return ret;
- }
- #endif
- #ifdef HAVE_ECC
- /**
- * Set the ECC parameters into the template.
- *
- * @param [in] key ECC key.
- * @param [in] tmpl PKCS#11 template.
- * @param [in] idx Index of template to put parameters into.
- * @return NOT_COMPILED_IN when the EC parameters are not known.
- * @return 0 on success.
- */
- static int Pkcs11EccSetParams(ecc_key* key, CK_ATTRIBUTE* tmpl, int idx)
- {
- int ret = 0;
- if (key->dp != NULL && key->dp->oid != NULL) {
- unsigned char* derParams = tmpl[idx].pValue;
- /* ASN.1 encoding: OBJ + ecc parameters OID */
- tmpl[idx].ulValueLen = key->dp->oidSz + 2;
- derParams[0] = ASN_OBJECT_ID;
- derParams[1] = key->dp->oidSz;
- XMEMCPY(derParams + 2, key->dp->oid, key->dp->oidSz);
- }
- else
- ret = NOT_COMPILED_IN;
- return ret;
- }
- /**
- * Create a PKCS#11 object containing the ECC public key data.
- * Encode the public key as an OCTET_STRING of the encoded point.
- *
- * @param [out] publicKey Handle to public key object.
- * @param [in] session Session object.
- * @param [in] public_key ECC public key.
- * @param [in] operation Cryptographic operation key is to be used for.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return MEMORY_E when a memory allocation fails.
- * @return 0 on success.
- */
- static int Pkcs11CreateEccPublicKey(CK_OBJECT_HANDLE* publicKey,
- Pkcs11Session* session,
- ecc_key* public_key,
- CK_ATTRIBUTE_TYPE operation)
- {
- int ret = 0;
- int i;
- unsigned char* ecPoint = NULL;
- word32 len;
- CK_RV rv;
- CK_UTF8CHAR params[MAX_EC_PARAM_LEN];
- /* Empty entries for optional label/ID. */
- CK_ATTRIBUTE keyTemplate[] = {
- { CKA_CLASS, &pubKeyClass, sizeof(pubKeyClass) },
- { CKA_KEY_TYPE, &ecKeyType, sizeof(ecKeyType) },
- { operation, &ckTrue, sizeof(ckTrue) },
- { CKA_EC_PARAMS, params, 0 },
- { CKA_EC_POINT, NULL, 0 },
- { 0, NULL, 0 },
- { 0, NULL, 0 }
- };
- /* Mandatory entries + 2 optional. */
- CK_ULONG keyTmplCnt = sizeof(keyTemplate) / sizeof(*keyTemplate) - 2;
- if (public_key->labelLen > 0) {
- keyTemplate[keyTmplCnt].type = CKA_LABEL;
- keyTemplate[keyTmplCnt].pValue = public_key->label;
- keyTemplate[keyTmplCnt].ulValueLen = public_key->labelLen;
- keyTmplCnt++;
- }
- if (public_key->idLen > 0) {
- keyTemplate[keyTmplCnt].type = CKA_ID;
- keyTemplate[keyTmplCnt].pValue = public_key->id;
- keyTemplate[keyTmplCnt].ulValueLen = public_key->idLen;
- keyTmplCnt++;
- }
- ret = Pkcs11EccSetParams(public_key, keyTemplate, 3);
- if (ret == 0) {
- /* ASN1 encoded: OCT + uncompressed point */
- len = 3 + 1 + 2 * public_key->dp->size;
- ecPoint = (unsigned char*)XMALLOC(len, public_key->heap,
- DYNAMIC_TYPE_ECC);
- if (ecPoint == NULL)
- ret = MEMORY_E;
- }
- if (ret == 0) {
- len -= 3;
- i = 0;
- ecPoint[i++] = ASN_OCTET_STRING;
- if (len >= ASN_LONG_LENGTH)
- ecPoint[i++] = ASN_LONG_LENGTH | 1;
- ecPoint[i++] = len;
- if (public_key->type == 0)
- public_key->type = ECC_PUBLICKEY;
- ret = wc_ecc_export_x963(public_key, ecPoint + i, &len);
- }
- if (ret == 0) {
- keyTemplate[4].pValue = ecPoint;
- keyTemplate[4].ulValueLen = len + i;
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Ec Public Key");
- pkcs11_dump_template(keyTemplate, keyTmplCnt);
- #endif
- rv = session->func->C_CreateObject(session->handle, keyTemplate,
- keyTmplCnt, publicKey);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_CreateObject", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ecPoint != NULL)
- XFREE(ecPoint, public_key->heap, DYNAMIC_TYPE_ECC);
- return ret;
- }
- /**
- * Create a PKCS#11 object containing the ECC private key data.
- *
- * @param privateKey [out] Handle to private key object.
- * @param session [in] Session object.
- * @param private_key [in] ECC private key.
- * @param operation [in] Cryptographic operation key is to be used for.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11CreateEccPrivateKey(CK_OBJECT_HANDLE* privateKey,
- Pkcs11Session* session,
- ecc_key* private_key,
- CK_ATTRIBUTE_TYPE operation)
- {
- int ret = 0;
- CK_RV rv;
- CK_UTF8CHAR params[MAX_EC_PARAM_LEN];
- /* Empty entries for optional label/ID. */
- CK_ATTRIBUTE keyTemplate[] = {
- { CKA_CLASS, &privKeyClass, sizeof(privKeyClass) },
- { CKA_KEY_TYPE, &ecKeyType, sizeof(ecKeyType) },
- { operation, &ckTrue, sizeof(ckTrue) },
- { CKA_EC_PARAMS, params, 0 },
- { CKA_VALUE, NULL, 0 },
- { 0, NULL, 0 },
- { 0, NULL, 0 }
- };
- /* Mandatory entries + 2 optional. */
- CK_ULONG keyTmplCnt = sizeof(keyTemplate) / sizeof(*keyTemplate) - 2;
- if (private_key->labelLen > 0) {
- keyTemplate[keyTmplCnt].type = CKA_LABEL;
- keyTemplate[keyTmplCnt].pValue = private_key->label;
- keyTemplate[keyTmplCnt].ulValueLen = private_key->labelLen;
- keyTmplCnt++;
- }
- if (private_key->idLen > 0) {
- keyTemplate[keyTmplCnt].type = CKA_ID;
- keyTemplate[keyTmplCnt].pValue = private_key->id;
- keyTemplate[keyTmplCnt].ulValueLen = private_key->idLen;
- keyTmplCnt++;
- }
- ret = Pkcs11EccSetParams(private_key, keyTemplate, 3);
- if (ret == 0) {
- keyTemplate[4].pValue = private_key->k.raw.buf;
- keyTemplate[4].ulValueLen = private_key->k.raw.len;
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Ec Private Key");
- pkcs11_dump_template(keyTemplate, keyTmplCnt);
- #endif
- rv = session->func->C_CreateObject(session->handle, keyTemplate,
- keyTmplCnt, privateKey);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_CreateObject", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- return ret;
- }
- #endif
- #if !defined(NO_RSA) || defined(HAVE_ECC) || (!defined(NO_AES) && \
- (defined(HAVE_AESGCM) || defined(HAVE_AES_CBC))) || !defined(NO_HMAC)
- /**
- * Check if mechanism is available in session on token.
- *
- * @param [in] session Session object.
- * @param [in] mech Mechanism to look for.
- * @return NOT_COMPILED_IN when mechanism not available.
- * @return 0 when mechanism is available.
- */
- static int Pkcs11MechAvail(Pkcs11Session* session, CK_MECHANISM_TYPE mech)
- {
- int ret = 0;
- CK_RV rv;
- CK_MECHANISM_INFO mechInfo;
- rv = session->func->C_GetMechanismInfo(session->slotId, mech, &mechInfo);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetMechanismInfo", rv);
- #endif
- if (rv != CKR_OK) {
- ret = NOT_COMPILED_IN;
- }
- return ret;
- }
- #endif
- #ifndef NO_HMAC
- /**
- * Return the mechanism type and key type for the digest type when using HMAC.
- *
- * @param [in] macType Digest type - e.g. WC_SHA256.
- * @param [in] mechType Mechanism type - e.g. CKM_SHA256_HMAC.
- * @param [in] keyType Key type - e.g. CKK_SHA256_HMAC.
- * @return NOT_COMPILED_IN if the digest algorithm isn't recognised.
- * @return 0 otherwise.
- */
- static int Pkcs11HmacTypes(int macType, int* mechType, int* keyType)
- {
- int ret = 0;
- switch (macType)
- {
- #ifndef NO_MD5
- case WC_MD5:
- *mechType = CKM_MD5_HMAC;
- *keyType = CKK_MD5_HMAC;
- break;
- #endif
- #ifndef NO_SHA
- case WC_SHA:
- *mechType = CKM_SHA_1_HMAC;
- *keyType = CKK_SHA_1_HMAC;
- break;
- #endif
- #ifdef WOLFSSL_SHA224
- case WC_SHA224:
- *mechType = CKM_SHA224_HMAC;
- *keyType = CKK_SHA224_HMAC;
- break;
- #endif
- #ifndef NO_SHA256
- case WC_SHA256:
- *mechType = CKM_SHA256_HMAC;
- *keyType = CKK_SHA256_HMAC;
- break;
- #endif
- #ifdef WOLFSSL_SHA384
- case WC_SHA384:
- *mechType = CKM_SHA384_HMAC;
- *keyType = CKK_SHA384_HMAC;
- break;
- #endif
- #ifdef WOLFSSL_SHA512
- case WC_SHA512:
- *mechType = CKM_SHA512_HMAC;
- *keyType = CKK_SHA512_HMAC;
- break;
- #endif
- default:
- ret = NOT_COMPILED_IN;
- break;
- }
- return ret;
- }
- #endif
- /**
- * Store the private key on the token in the session.
- *
- * @param [in] token Token to store private key on.
- * @param [in] type Key type.
- * @param [in] clear Clear out the private data from software key.
- * @param [in] key Key type specific object.
- * @return NOT_COMPILED_IN when mechanism not available.
- * @return 0 on success.
- */
- int wc_Pkcs11StoreKey(Pkcs11Token* token, int type, int clear, void* key)
- {
- int ret = 0;
- Pkcs11Session session;
- CK_OBJECT_HANDLE privKey = NULL_PTR;
- ret = Pkcs11OpenSession(token, &session, 1);
- if (ret == 0) {
- switch (type) {
- #if !defined(NO_AES) && defined(HAVE_AESGCM)
- case PKCS11_KEY_TYPE_AES_GCM: {
- Aes* aes = (Aes*)key;
- ret = Pkcs11MechAvail(&session, CKM_AES_GCM);
- if (ret == 0) {
- ret = Pkcs11CreateSecretKey(&privKey, &session, CKK_AES,
- (unsigned char*)aes->devKey,
- aes->keylen,
- (unsigned char*)aes->id,
- aes->idLen, aes->label,
- aes->labelLen, CKA_ENCRYPT);
- }
- if (ret == 0 && clear)
- ForceZero(aes->devKey, aes->keylen);
- break;
- }
- #endif
- #if !defined(NO_AES) && defined(HAVE_AES_CBC)
- case PKCS11_KEY_TYPE_AES_CBC: {
- Aes* aes = (Aes*)key;
- ret = Pkcs11MechAvail(&session, CKM_AES_CBC);
- if (ret == 0) {
- ret = Pkcs11CreateSecretKey(&privKey, &session, CKK_AES,
- (unsigned char*)aes->devKey,
- aes->keylen,
- (unsigned char*)aes->id,
- aes->idLen, aes->label,
- aes->labelLen, CKA_ENCRYPT);
- }
- if (ret == 0 && clear)
- ForceZero(aes->devKey, aes->keylen);
- break;
- }
- #endif
- #ifndef NO_HMAC
- case PKCS11_KEY_TYPE_HMAC: {
- Hmac* hmac = (Hmac*)key;
- int mechType;
- int keyType;
- ret = Pkcs11HmacTypes(hmac->macType, &mechType, &keyType);
- if (ret == NOT_COMPILED_IN)
- break;
- if (ret == 0)
- ret = Pkcs11MechAvail(&session, mechType);
- if (ret == 0) {
- ret = Pkcs11CreateSecretKey(&privKey, &session, keyType,
- (unsigned char*)hmac->keyRaw,
- hmac->keyLen,
- (unsigned char*)hmac->id,
- hmac->idLen, hmac->label,
- hmac->labelLen, CKA_SIGN);
- if (ret == WC_HW_E) {
- ret = Pkcs11CreateSecretKey(&privKey, &session,
- CKK_GENERIC_SECRET,
- (unsigned char*)hmac->keyRaw,
- hmac->keyLen,
- (unsigned char*)hmac->id,
- hmac->idLen, hmac->label,
- hmac->labelLen, CKA_SIGN);
- }
- }
- break;
- }
- #endif
- #ifndef NO_RSA
- case PKCS11_KEY_TYPE_RSA: {
- RsaKey* rsaKey = (RsaKey*)key;
- ret = Pkcs11MechAvail(&session, CKM_RSA_X_509);
- if (ret == 0)
- ret = Pkcs11CreateRsaPrivateKey(&privKey, &session, rsaKey,
- 1);
- if (ret == 0 && clear) {
- mp_forcezero(&rsaKey->u);
- mp_forcezero(&rsaKey->dQ);
- mp_forcezero(&rsaKey->dP);
- mp_forcezero(&rsaKey->q);
- mp_forcezero(&rsaKey->p);
- mp_forcezero(&rsaKey->d);
- }
- break;
- }
- #endif
- #ifdef HAVE_ECC
- case PKCS11_KEY_TYPE_EC: {
- ecc_key* eccKey = (ecc_key*)key;
- int ret2 = NOT_COMPILED_IN;
- #ifndef NO_PKCS11_ECDH
- if ((eccKey->flags & WC_ECC_FLAG_DEC_SIGN) == 0) {
- /* Try ECDH mechanism first. */
- ret = Pkcs11MechAvail(&session, CKM_ECDH1_DERIVE);
- if (ret == 0) {
- ret = Pkcs11CreateEccPrivateKey(&privKey, &session,
- eccKey, CKA_DERIVE);
- }
- }
- #endif
- if (ret == 0 || ret == NOT_COMPILED_IN) {
- /* Try ECDSA mechanism next. */
- ret2 = Pkcs11MechAvail(&session, CKM_ECDSA);
- if (ret2 == 0) {
- ret2 = Pkcs11CreateEccPrivateKey(&privKey, &session,
- eccKey, CKA_SIGN);
- if (ret2 == 0) {
- CK_OBJECT_HANDLE pubKey = NULL_PTR;
- /* Store public key for validation with cert. */
- ret2 = Pkcs11CreateEccPublicKey(&pubKey, &session,
- eccKey, CKA_VERIFY);
- }
- }
- /* OK for this to fail if set for ECDH. */
- if (ret == NOT_COMPILED_IN)
- ret = ret2;
- }
- if (ret == 0 && clear)
- mp_forcezero(&eccKey->k);
- break;
- }
- #endif
- default:
- ret = NOT_COMPILED_IN;
- break;
- }
- Pkcs11CloseSession(token, &session);
- }
- (void)privKey;
- (void)clear;
- (void)key;
- return ret;
- }
- #if !defined(NO_RSA) || defined(HAVE_ECC) || (!defined(NO_AES) && \
- (defined(HAVE_AESGCM) || defined(HAVE_AES_CBC))) || !defined(NO_HMAC)
- /**
- * Find the PKCS#11 object containing key data using template.
- *
- * @param [out] key Handle to key object.
- * @param [in] session Session object.
- * @param [in] keyTemplate PKCS #11 template to use in search.
- * @param [in] keyTmplCnt Count of entries in PKCS #11 template.
- * @param [out] count Number of keys matching template.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11FindKeyByTemplate(CK_OBJECT_HANDLE* key,
- Pkcs11Session* session,
- CK_ATTRIBUTE *keyTemplate,
- CK_ULONG keyTmplCnt,
- CK_ULONG *count)
- {
- int ret = 0;
- CK_RV rv;
- WOLFSSL_MSG("PKCS#11: Find Key By Template");
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Find Key");
- pkcs11_dump_template(keyTemplate, keyTmplCnt);
- #endif
- rv = session->func->C_FindObjectsInit(session->handle, keyTemplate,
- keyTmplCnt);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_FindObjectsInit", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- if (ret == 0) {
- rv = session->func->C_FindObjects(session->handle, key, 1, count);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_FindObjects", rv);
- pkcs11_val("C_FindObjects Count", *count);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- rv = session->func->C_FindObjectsFinal(session->handle);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_FindObjectsFinal", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- return ret;
- }
- /**
- * Find the PKCS#11 object containing the private key data by label.
- *
- * @param [out] key Handle to key object.
- * @param [in] keyClass Public or private key class.
- * @param [in] keyType Type of key.
- * @param [in] session Session object.
- * @param [in] id Identifier set against a key.
- * @param [in] idLen Length of identifier.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11FindKeyByLabel(CK_OBJECT_HANDLE* key, CK_OBJECT_CLASS keyClass,
- CK_KEY_TYPE keyType, Pkcs11Session* session,
- char* label, int labelLen)
- {
- int ret = 0;
- CK_ULONG count;
- CK_ATTRIBUTE keyTemplate[] = {
- { CKA_CLASS, &keyClass, sizeof(keyClass) },
- { CKA_KEY_TYPE, &keyType, sizeof(keyType) },
- { CKA_LABEL, label, (CK_ULONG)labelLen }
- };
- CK_ULONG keyTmplCnt = sizeof(keyTemplate) / sizeof(*keyTemplate);
- WOLFSSL_MSG("PKCS#11: Find Key By Label");
- ret = Pkcs11FindKeyByTemplate(key, session, keyTemplate, keyTmplCnt,
- &count);
- if (ret == 0 && count == 0)
- ret = WC_HW_E;
- return ret;
- }
- /**
- * Find the PKCS#11 object containing the private key data by ID.
- *
- * @param [out] key Handle to key object.
- * @param [in] keyClass Public or private key class.
- * @param [in] keyType Type of key.
- * @param [in] session Session object.
- * @param [in] id Identifier set against a key.
- * @param [in] idLen Length of identifier.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11FindKeyById(CK_OBJECT_HANDLE* key, CK_OBJECT_CLASS keyClass,
- CK_KEY_TYPE keyType, Pkcs11Session* session,
- byte* id, int idLen)
- {
- int ret = 0;
- CK_ULONG count;
- CK_ATTRIBUTE keyTemplate[] = {
- { CKA_CLASS, &keyClass, sizeof(keyClass) },
- { CKA_KEY_TYPE, &keyType, sizeof(keyType) },
- { CKA_ID, id, (CK_ULONG)idLen }
- };
- CK_ULONG keyTmplCnt = sizeof(keyTemplate) / sizeof(*keyTemplate);
- WOLFSSL_MSG("PKCS#11: Find Key By Id");
- ret = Pkcs11FindKeyByTemplate(key, session, keyTemplate, keyTmplCnt,
- &count);
- if (ret == 0 && count == 0)
- ret = WC_HW_E;
- return ret;
- }
- #endif
- #ifndef NO_RSA
- /**
- * Find the PKCS#11 object containing the RSA public or private key data with
- * the modulus specified.
- *
- * @param [out] key Handle to key object.
- * @param [in] keyClass Public or private key class.
- * @param [in] session Session object.
- * @param [in] rsaKey RSA key with modulus to search on.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11FindRsaKey(CK_OBJECT_HANDLE* key, CK_OBJECT_CLASS keyClass,
- Pkcs11Session* session, RsaKey* rsaKey)
- {
- CK_ULONG count;
- CK_ATTRIBUTE keyTemplate[] = {
- { CKA_CLASS, &keyClass, sizeof(keyClass) },
- { CKA_KEY_TYPE, &rsaKeyType, sizeof(rsaKeyType) },
- { CKA_MODULUS, NULL, 0 },
- };
- CK_ULONG keyTmplCnt = sizeof(keyTemplate) / sizeof(*keyTemplate);
- /* Set the modulus. */
- keyTemplate[2].pValue = rsaKey->n.raw.buf;
- keyTemplate[2].ulValueLen = rsaKey->n.raw.len;
- return Pkcs11FindKeyByTemplate(key, session, keyTemplate, keyTmplCnt,
- &count);
- }
- /**
- * Exponentiate the input with the public part of the RSA key.
- * Used in public encrypt and decrypt.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * 0 on success.
- */
- static int Pkcs11RsaPublic(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- CK_RV rv;
- CK_MECHANISM mech;
- CK_ULONG outLen;
- CK_OBJECT_HANDLE publicKey = NULL_PTR;
- int sessionKey = 0;
- RsaKey* rsaKey = info->pk.rsa.key;
- CK_ATTRIBUTE keyTemplate[] = {
- { CKA_CLASS, &pubKeyClass, sizeof(pubKeyClass) },
- { CKA_KEY_TYPE, &rsaKeyType, sizeof(rsaKeyType) },
- { CKA_ENCRYPT, &ckTrue, sizeof(ckTrue) },
- { CKA_MODULUS, NULL, 0 },
- { CKA_PUBLIC_EXPONENT, NULL, 0 }
- };
- CK_ULONG keyTmplCnt = sizeof(keyTemplate) / sizeof(*keyTemplate);
- WOLFSSL_MSG("PKCS#11: RSA Public Key Operation");
- if (info->pk.rsa.outLen == NULL) {
- ret = BAD_FUNC_ARG;
- }
- if (ret == 0) {
- if ((sessionKey = !mp_iszero(&rsaKey->e))) {
- /* Set the modulus and public exponent data. */
- keyTemplate[3].pValue = rsaKey->n.raw.buf;
- keyTemplate[3].ulValueLen = rsaKey->n.raw.len;
- keyTemplate[4].pValue = rsaKey->e.raw.buf;
- keyTemplate[4].ulValueLen = rsaKey->e.raw.len;
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("RSA Public Key");
- pkcs11_dump_template(keyTemplate, keyTmplCnt);
- #endif
- /* Create an object containing public key data for device to use. */
- rv = session->func->C_CreateObject(session->handle, keyTemplate,
- keyTmplCnt, &publicKey);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_CreateObject", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- else if (info->pk.rsa.key->labelLen > 0) {
- ret = Pkcs11FindKeyByLabel(&publicKey, CKO_PUBLIC_KEY, CKK_RSA,
- session, info->pk.rsa.key->label,
- info->pk.rsa.key->labelLen);
- }
- else {
- ret = Pkcs11FindKeyById(&publicKey, CKO_PUBLIC_KEY, CKK_RSA,
- session, rsaKey->id, rsaKey->idLen);
- }
- }
- if (ret == 0) {
- /* Raw RSA encrypt/decrypt operation. */
- mech.mechanism = CKM_RSA_X_509;
- mech.ulParameterLen = 0;
- mech.pParameter = NULL;
- rv = session->func->C_EncryptInit(session->handle, &mech, publicKey);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_EncryptInit", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- outLen = (CK_ULONG)*info->pk.rsa.outLen;
- rv = session->func->C_Encrypt(session->handle,
- (CK_BYTE_PTR)info->pk.rsa.in, info->pk.rsa.inLen,
- info->pk.rsa.out, &outLen);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_Encrypt", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0)
- *info->pk.rsa.outLen = (word32)outLen;
- if (sessionKey)
- session->func->C_DestroyObject(session->handle, publicKey);
- return ret;
- }
- /**
- * Get the RSA public key data from the PKCS#11 object.
- *
- * @param [in] key RSA key to put the data into.
- * @param [in] session Session object.
- * @param [in] pubkey Public key object.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return MEMORY_E when a memory allocation fails.
- * @return 0 on success.
- */
- static int Pkcs11GetRsaPublicKey(RsaKey* key, Pkcs11Session* session,
- CK_OBJECT_HANDLE pubKey)
- {
- int ret = 0;
- unsigned char* mod = NULL;
- unsigned char* exp = NULL;
- int modSz, expSz;
- CK_ATTRIBUTE tmpl[] = {
- { CKA_MODULUS, NULL_PTR, 0 },
- { CKA_PUBLIC_EXPONENT, NULL_PTR, 0 }
- };
- CK_ULONG tmplCnt = sizeof(tmpl) / sizeof(*tmpl);
- CK_RV rv;
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Get RSA Public Key Length");
- pkcs11_dump_template(tmpl, tmplCnt);
- #endif
- rv = session->func->C_GetAttributeValue(session->handle, pubKey, tmpl,
- tmplCnt);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetAttributeValue", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("RSA Public Key Length");
- pkcs11_dump_template(tmpl, tmplCnt);
- #endif
- if (ret == 0) {
- modSz = (int)tmpl[0].ulValueLen;
- expSz = (int)tmpl[1].ulValueLen;
- mod = (unsigned char*)XMALLOC(modSz, key->heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (mod == NULL)
- ret = MEMORY_E;
- }
- if (ret == 0) {
- exp = (unsigned char*)XMALLOC(expSz, key->heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (exp == NULL)
- ret = MEMORY_E;
- }
- if (ret == 0) {
- tmpl[0].pValue = mod;
- tmpl[1].pValue = exp;
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Get RSA Public Key");
- pkcs11_dump_template(tmpl, tmplCnt);
- #endif
- rv = session->func->C_GetAttributeValue(session->handle, pubKey,
- tmpl, tmplCnt);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetAttributeValue", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("RSA Public Key");
- pkcs11_dump_template(tmpl, tmplCnt);
- #endif
- }
- if (ret == 0)
- ret = wc_RsaPublicKeyDecodeRaw(mod, modSz, exp, expSz, key);
- if (exp != NULL)
- XFREE(exp, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- if (mod != NULL)
- XFREE(mod, key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- /**
- * Exponentiate the input with the private part of the RSA key.
- * Used in private encrypt and decrypt.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @param [in] func Function to perform - decrypt or sign.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11RsaPrivate(Pkcs11Session* session, wc_CryptoInfo* info,
- int func)
- {
- int ret = 0;
- CK_RV rv;
- CK_MECHANISM mech;
- CK_ULONG outLen;
- CK_OBJECT_HANDLE privateKey = NULL_PTR;
- int sessionKey = 0;
- WOLFSSL_MSG("PKCS#11: RSA Private Key Operation");
- if (info->pk.rsa.outLen == NULL) {
- ret = BAD_FUNC_ARG;
- }
- if (ret == 0) {
- if ((sessionKey = !mp_iszero(&info->pk.rsa.key->d))) {
- ret = Pkcs11CreateRsaPrivateKey(&privateKey, session,
- info->pk.rsa.key, 0);
- }
- else if (info->pk.rsa.key->labelLen > 0) {
- ret = Pkcs11FindKeyByLabel(&privateKey, CKO_PRIVATE_KEY, CKK_RSA,
- session, info->pk.rsa.key->label,
- info->pk.rsa.key->labelLen);
- }
- else if (info->pk.rsa.key->idLen > 0) {
- ret = Pkcs11FindKeyById(&privateKey, CKO_PRIVATE_KEY, CKK_RSA,
- session, info->pk.rsa.key->id,
- info->pk.rsa.key->idLen);
- }
- else {
- ret = Pkcs11FindRsaKey(&privateKey, CKO_PRIVATE_KEY, session,
- info->pk.rsa.key);
- }
- }
- if ((ret == 0) && (!sessionKey)) {
- ret = Pkcs11GetRsaPublicKey(info->pk.rsa.key, session, privateKey);
- }
- if (ret == 0) {
- /* Raw RSA encrypt/decrypt operation. */
- mech.mechanism = CKM_RSA_X_509;
- mech.ulParameterLen = 0;
- mech.pParameter = NULL;
- if (func == CKF_DECRYPT) {
- rv = session->func->C_DecryptInit(session->handle, &mech,
- privateKey);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_DecryptInit", rv);
- #endif
- }
- else {
- rv = session->func->C_SignInit(session->handle, &mech, privateKey);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_SignInit", rv);
- #endif
- }
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- if (func == CKF_DECRYPT) {
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_val("C_Decrypt inLen", info->pk.rsa.inLen);
- pkcs11_val("C_Decrypt outLen", *info->pk.rsa.outLen);
- #endif
- outLen = (CK_ULONG)*info->pk.rsa.outLen;
- rv = session->func->C_Decrypt(session->handle,
- (CK_BYTE_PTR)info->pk.rsa.in, info->pk.rsa.inLen,
- info->pk.rsa.out, &outLen);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_Decrypt", rv);
- #endif
- }
- else {
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_val("C_Sign inLen", info->pk.rsa.inLen);
- pkcs11_val("C_Sign outLen", *info->pk.rsa.outLen);
- #endif
- outLen = (CK_ULONG)*info->pk.rsa.outLen;
- rv = session->func->C_Sign(session->handle,
- (CK_BYTE_PTR)info->pk.rsa.in, info->pk.rsa.inLen,
- info->pk.rsa.out, &outLen);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_Sign", rv);
- #endif
- }
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0)
- *info->pk.rsa.outLen = (word32)outLen;
- if (sessionKey)
- session->func->C_DestroyObject(session->handle, privateKey);
- return ret;
- }
- /**
- * Perform an RSA operation.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11Rsa(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- CK_RV rv;
- CK_MECHANISM_INFO mechInfo;
- /* Check operation is supported. */
- rv = session->func->C_GetMechanismInfo(session->slotId, CKM_RSA_X_509,
- &mechInfo);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetMechanismInfo", rv);
- #endif
- if (rv != CKR_OK) {
- ret = NOT_COMPILED_IN;
- }
- if (ret == 0) {
- if (info->pk.rsa.type == RSA_PUBLIC_ENCRYPT ||
- info->pk.rsa.type == RSA_PUBLIC_DECRYPT) {
- if ((mechInfo.flags & CKF_ENCRYPT) == 0)
- ret = NOT_COMPILED_IN;
- else
- ret = Pkcs11RsaPublic(session, info);
- }
- else if (info->pk.rsa.type == RSA_PRIVATE_ENCRYPT ||
- info->pk.rsa.type == RSA_PRIVATE_DECRYPT) {
- if ((mechInfo.flags & CKF_DECRYPT) == 0 &&
- (mechInfo.flags & CKF_SIGN) == 0) {
- ret = NOT_COMPILED_IN;
- }
- else if ((info->pk.rsa.type == RSA_PRIVATE_ENCRYPT &&
- (mechInfo.flags & CKF_SIGN) != 0) ||
- (info->pk.rsa.type == RSA_PRIVATE_DECRYPT &&
- (mechInfo.flags & CKF_DECRYPT) == 0)) {
- ret = Pkcs11RsaPrivate(session, info, CKF_SIGN);
- }
- else
- ret = Pkcs11RsaPrivate(session, info, CKF_DECRYPT);
- }
- else
- ret = NOT_COMPILED_IN;
- }
- return ret;
- }
- #ifdef WOLFSSL_KEY_GEN
- /**
- * Perform an RSA key generation operation.
- * The private key data stays on the device.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11RsaKeyGen(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- RsaKey* key = info->pk.rsakg.key;
- CK_RV rv;
- CK_ULONG bits = info->pk.rsakg.size;
- CK_OBJECT_HANDLE pubKey = NULL_PTR, privKey = NULL_PTR;
- CK_MECHANISM mech;
- static CK_BYTE pub_exp[] = { 0x01, 0x00, 0x01, 0x00 };
- CK_ATTRIBUTE pubKeyTmpl[] = {
- { CKA_MODULUS_BITS, &bits, sizeof(bits) },
- { CKA_ENCRYPT, &ckTrue, sizeof(ckTrue) },
- { CKA_VERIFY, &ckTrue, sizeof(ckTrue) },
- { CKA_PUBLIC_EXPONENT, &pub_exp, sizeof(pub_exp) }
- };
- CK_ULONG pubTmplCnt = sizeof(pubKeyTmpl)/sizeof(*pubKeyTmpl);
- /* Empty entries for optional label/ID. */
- CK_ATTRIBUTE privKeyTmpl[] = {
- { CKA_DECRYPT, &ckTrue, sizeof(ckTrue) },
- { CKA_SIGN, &ckTrue, sizeof(ckTrue) },
- { 0, NULL, 0 },
- { 0, NULL, 0 }
- };
- /* 2 mandatory entries + 2 optional. */
- int privTmplCnt = 2;
- int i;
- ret = Pkcs11MechAvail(session, CKM_RSA_PKCS_KEY_PAIR_GEN);
- if (ret == 0) {
- WOLFSSL_MSG("PKCS#11: RSA Key Generation Operation");
- /* Most commonly used public exponent value (array initialized). */
- if (info->pk.rsakg.e != WC_RSA_EXPONENT) {
- for (i = 0; i < (int)sizeof(pub_exp); i++)
- pub_exp[i] = (info->pk.rsakg.e >> (8 * i)) & 0xff;
- }
- for (i = (int)sizeof(pub_exp) - 1; pub_exp[i] == 0; i--) {
- }
- pubKeyTmpl[3].ulValueLen = i + 1;
- if (key->labelLen != 0) {
- privKeyTmpl[privTmplCnt].type = CKA_LABEL;
- privKeyTmpl[privTmplCnt].pValue = key->label;
- privKeyTmpl[privTmplCnt].ulValueLen = key->labelLen;
- privTmplCnt++;
- }
- if (key->idLen != 0) {
- privKeyTmpl[privTmplCnt].type = CKA_ID;
- privKeyTmpl[privTmplCnt].pValue = key->id;
- privKeyTmpl[privTmplCnt].ulValueLen = key->idLen;
- privTmplCnt++;
- }
- mech.mechanism = CKM_RSA_PKCS_KEY_PAIR_GEN;
- mech.ulParameterLen = 0;
- mech.pParameter = NULL;
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Public Key");
- pkcs11_dump_template(pubKeyTmpl, pubTmplCnt);
- WOLFSSL_MSG("Private Key");
- pkcs11_dump_template(privKeyTmpl, privTmplCnt);
- #endif
- rv = session->func->C_GenerateKeyPair(session->handle, &mech,
- pubKeyTmpl, pubTmplCnt,
- privKeyTmpl, privTmplCnt,
- &pubKey, &privKey);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GenerateKeyPair", rv);
- #endif
- if (rv != CKR_OK) {
- ret = -1;
- }
- }
- if (ret == 0)
- ret = Pkcs11GetRsaPublicKey(key, session, pubKey);
- if (pubKey != NULL_PTR)
- ret = (int)session->func->C_DestroyObject(session->handle, pubKey);
- if (ret != 0 && privKey != NULL_PTR)
- ret = (int)session->func->C_DestroyObject(session->handle, privKey);
- return ret;
- }
- #endif /* WOLFSSL_KEY_GEN */
- #endif /* !NO_RSA */
- #ifdef HAVE_ECC
- /**
- * Find the PKCS#11 object containing the ECC public or private key data.
- * Search for public key by public point.
- *
- * @param [out] key Handle to key object.
- * @param [in] keyClass Public or private key class.
- * @param [in] session Session object.
- * @param [in] eccKey ECC key with parameters.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return MEMORY_E when a memory allocation fails.
- * @return 0 on success.
- */
- static int Pkcs11FindEccKey(CK_OBJECT_HANDLE* key, CK_OBJECT_CLASS keyClass,
- Pkcs11Session* session, ecc_key* eccKey,
- int op)
- {
- int ret = 0;
- int i;
- unsigned char* ecPoint = NULL;
- word32 len = 0;
- CK_RV rv;
- CK_ULONG count;
- CK_UTF8CHAR params[MAX_EC_PARAM_LEN];
- CK_ATTRIBUTE keyTemplate[] = {
- { CKA_CLASS, &keyClass, sizeof(keyClass) },
- { CKA_KEY_TYPE, &ecKeyType, sizeof(ecKeyType) },
- { CKA_EC_PARAMS, params, 0 },
- { op, &ckTrue, sizeof(ckTrue) },
- { CKA_EC_POINT, NULL, 0 },
- };
- CK_ULONG attrCnt = 4;
- ret = Pkcs11EccSetParams(eccKey, keyTemplate, 2);
- if (ret == 0 && keyClass == CKO_PUBLIC_KEY) {
- /* ASN1 encoded: OCT + uncompressed point */
- len = 3 + 1 + 2 * eccKey->dp->size;
- ecPoint = (unsigned char*)XMALLOC(len, eccKey->heap, DYNAMIC_TYPE_ECC);
- if (ecPoint == NULL)
- ret = MEMORY_E;
- }
- if (ret == 0 && keyClass == CKO_PUBLIC_KEY) {
- len -= 3;
- i = 0;
- ecPoint[i++] = ASN_OCTET_STRING;
- if (len >= ASN_LONG_LENGTH)
- ecPoint[i++] = (ASN_LONG_LENGTH | 1);
- ecPoint[i++] = len;
- if (eccKey->type == 0)
- eccKey->type = ECC_PUBLICKEY;
- ret = wc_ecc_export_x963(eccKey, ecPoint + i, &len);
- }
- if (ret == 0 && keyClass == CKO_PUBLIC_KEY) {
- keyTemplate[attrCnt].pValue = ecPoint;
- keyTemplate[attrCnt].ulValueLen = len + i;
- attrCnt++;
- }
- if (ret == 0) {
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Find Ec Key");
- pkcs11_dump_template(keyTemplate, attrCnt);
- #endif
- rv = session->func->C_FindObjectsInit(session->handle, keyTemplate,
- attrCnt);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_FindObjectsInit", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- rv = session->func->C_FindObjects(session->handle, key, 1, &count);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_FindObjects", rv);
- pkcs11_val("C_FindObjects Count", count);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- rv = session->func->C_FindObjectsFinal(session->handle);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_FindObjectsFinal", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ecPoint != NULL)
- XFREE(ecPoint, eccKey->heap, DYNAMIC_TYPE_ECC);
- return ret;
- }
- /**
- * Gets the public key data from the PKCS#11 object and puts into the ECC key.
- *
- * @param [in] key ECC public key.
- * @param [in] session Session object.
- * @param [in] pubKey ECC public key PKCS#11 object.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return MEMORY_E when a memory allocation fails.
- * @return 0 on success.
- */
- static int Pkcs11GetEccPublicKey(ecc_key* key, Pkcs11Session* session,
- CK_OBJECT_HANDLE pubKey)
- {
- int ret = 0;
- word32 i = 0;
- int curveIdx;
- unsigned char* point = NULL;
- int pointSz;
- byte tag;
- CK_RV rv;
- CK_ATTRIBUTE tmpl[] = {
- { CKA_EC_POINT, NULL_PTR, 0 },
- };
- CK_ULONG tmplCnt = sizeof(tmpl) / sizeof(*tmpl);
- rv = session->func->C_GetAttributeValue(session->handle, pubKey, tmpl,
- tmplCnt);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetAttributeValue", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- if (ret == 0) {
- pointSz = (int)tmpl[0].ulValueLen;
- point = (unsigned char*)XMALLOC(pointSz, key->heap, DYNAMIC_TYPE_ECC);
- if (point == NULL)
- ret = MEMORY_E;
- }
- if (ret == 0) {
- tmpl[0].pValue = point;
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Get Ec Public Key");
- pkcs11_dump_template(tmpl, tmplCnt);
- #endif
- rv = session->func->C_GetAttributeValue(session->handle, pubKey,
- tmpl, tmplCnt);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetAttributeValue", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Ec Public Key");
- pkcs11_dump_template(tmpl, tmplCnt);
- #endif
- }
- /* Make sure the data is big enough for ASN.1: OCT + uncompressed point */
- if (ret == 0 && pointSz < key->dp->size * 2 + 1 + 2)
- ret = ASN_PARSE_E;
- /* Step over the OCTET_STRING wrapper. */
- if (ret == 0 && GetASNTag(point, &i, &tag, pointSz) != 0)
- ret = ASN_PARSE_E;
- if (ret == 0 && tag != ASN_OCTET_STRING)
- ret = ASN_PARSE_E;
- if (ret == 0 && point[i] >= ASN_LONG_LENGTH) {
- if (point[i++] != (ASN_LONG_LENGTH | 1))
- ret = ASN_PARSE_E;
- else if (pointSz < key->dp->size * 2 + 1 + 3)
- ret = ASN_PARSE_E;
- }
- if (ret == 0 && point[i++] != key->dp->size * 2 + 1)
- ret = ASN_PARSE_E;
- if (ret == 0) {
- curveIdx = wc_ecc_get_curve_idx(key->dp->id);
- ret = wc_ecc_import_point_der(point + i, pointSz - i, curveIdx,
- &key->pubkey);
- }
- /* make sure the ecc_key type has been set */
- if (ret == 0 && key->type == 0) {
- key->type = ECC_PUBLICKEY;
- }
- if (point != NULL)
- XFREE(point, key->heap, DYNAMIC_TYPE_ECC);
- return ret;
- }
- #ifndef NO_PKCS11_EC_KEYGEN
- /**
- * Perform an ECC key generation operation.
- * The private key data stays on the device.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11EcKeyGen(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- ecc_key* key = info->pk.eckg.key;
- CK_RV rv;
- CK_OBJECT_HANDLE pubKey = NULL_PTR, privKey = NULL_PTR;
- CK_MECHANISM mech;
- CK_UTF8CHAR params[MAX_EC_PARAM_LEN];
- CK_ATTRIBUTE pubKeyTmpl[] = {
- { CKA_EC_PARAMS, params, 0 },
- { CKA_VERIFY, &ckTrue, sizeof(ckTrue) },
- { CKA_ENCRYPT, &ckTrue, sizeof(ckTrue) },
- };
- int pubTmplCnt = 1;
- /* Empty entries for optional label/ID. */
- CK_ATTRIBUTE privKeyTmplDerive[] = {
- { CKA_DERIVE, &ckTrue, sizeof(ckTrue) },
- { 0, NULL, 0 },
- { 0, NULL, 0 },
- };
- /* Empty entries for optional label/ID. */
- CK_ATTRIBUTE privKeyTmplEncSign[] = {
- { CKA_SIGN, &ckTrue, sizeof(ckTrue) },
- { CKA_DECRYPT, &ckTrue, sizeof(ckTrue) },
- { 0, NULL, 0 },
- { 0, NULL, 0 },
- };
- CK_ATTRIBUTE* privKeyTmpl = privKeyTmplDerive;
- /* Mandatory entries + 2 optional. */
- int privTmplCnt = 1;
- ret = Pkcs11MechAvail(session, CKM_EC_KEY_PAIR_GEN);
- if (ret == 0) {
- WOLFSSL_MSG("PKCS#11: EC Key Generation Operation");
- ret = Pkcs11EccSetParams(key, pubKeyTmpl, 0);
- }
- if (ret == 0) {
- /* Default is to use for derivation. */
- if ((key->flags & WC_ECC_FLAG_DEC_SIGN) == WC_ECC_FLAG_DEC_SIGN) {
- privKeyTmpl = privKeyTmplEncSign;
- privTmplCnt = 2;
- pubTmplCnt = 2;
- }
- if (key->labelLen != 0) {
- privKeyTmpl[privTmplCnt].type = CKA_LABEL;
- privKeyTmpl[privTmplCnt].pValue = key->label;
- privKeyTmpl[privTmplCnt].ulValueLen = key->labelLen;
- privTmplCnt++;
- }
- if (key->idLen != 0) {
- privKeyTmpl[privTmplCnt].type = CKA_ID;
- privKeyTmpl[privTmplCnt].pValue = key->id;
- privKeyTmpl[privTmplCnt].ulValueLen = key->idLen;
- privTmplCnt++;
- }
- mech.mechanism = CKM_EC_KEY_PAIR_GEN;
- mech.ulParameterLen = 0;
- mech.pParameter = NULL;
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Ec Private");
- pkcs11_dump_template(privKeyTmpl, privTmplCnt);
- WOLFSSL_MSG("Ec Public");
- pkcs11_dump_template(pubKeyTmpl, pubTmplCnt);
- #endif
- rv = session->func->C_GenerateKeyPair(session->handle, &mech,
- pubKeyTmpl, pubTmplCnt,
- privKeyTmpl, privTmplCnt,
- &pubKey, &privKey);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GenerateKeyPair", rv);
- #endif
- if (rv != CKR_OK) {
- ret = -1;
- }
- }
- if (ret == 0)
- ret = Pkcs11GetEccPublicKey(key, session, pubKey);
- if (pubKey != NULL_PTR)
- session->func->C_DestroyObject(session->handle, pubKey);
- if (ret != 0 && privKey != NULL_PTR)
- session->func->C_DestroyObject(session->handle, privKey);
- return ret;
- }
- #endif
- #ifndef NO_PKCS11_ECDH
- /**
- * Extracts the secret key data from the PKCS#11 object.
- *
- * @param [in] session Session object.
- * @param [in] secret PKCS#11 object with the secret key data.
- * @param [in] out Buffer to hold secret data.
- * @param [in,out] outLen On in, length of buffer.
- * On out, the length of data in buffer.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11ExtractSecret(Pkcs11Session* session, CK_OBJECT_HANDLE secret,
- byte* out, word32* outLen)
- {
- int ret = 0;
- CK_ATTRIBUTE tmpl[] = {
- {CKA_VALUE, NULL_PTR, 0}
- };
- CK_ULONG tmplCnt = sizeof(tmpl) / sizeof(*tmpl);
- CK_RV rv;
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Get Secret Length");
- pkcs11_dump_template(tmpl, tmplCnt);
- #endif
- rv = session->func->C_GetAttributeValue(session->handle, secret, tmpl,
- tmplCnt);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetAttributeValue", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Secret Length");
- pkcs11_dump_template(tmpl, tmplCnt);
- #endif
- if (ret == 0) {
- if (tmpl[0].ulValueLen > *outLen)
- ret = BUFFER_E;
- }
- if (ret == 0) {
- tmpl[0].pValue = out;
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Get Secret");
- pkcs11_dump_template(tmpl, tmplCnt);
- #endif
- rv = session->func->C_GetAttributeValue(session->handle, secret,
- tmpl, tmplCnt);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetAttributeValue", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Secret");
- pkcs11_dump_template(tmpl, tmplCnt);
- #endif
- *outLen = (word32)tmpl[0].ulValueLen;
- }
- return ret;
- }
- /**
- * Performs the ECDH secret generation operation.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * 0 on success.
- */
- static int Pkcs11ECDH(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- int sessionKey = 0;
- unsigned char* point = NULL;
- word32 pointLen;
- CK_RV rv;
- CK_KEY_TYPE keyType = CKK_GENERIC_SECRET;
- CK_MECHANISM mech;
- CK_ECDH1_DERIVE_PARAMS params;
- CK_OBJECT_HANDLE privateKey = NULL_PTR;
- CK_OBJECT_HANDLE secret = CK_INVALID_HANDLE;
- CK_ULONG secSz;
- CK_ATTRIBUTE tmpl[] = {
- { CKA_CLASS, &secretKeyClass, sizeof(secretKeyClass) },
- { CKA_KEY_TYPE, &keyType, sizeof(keyType) },
- { CKA_PRIVATE, &ckFalse, sizeof(ckFalse) },
- { CKA_SENSITIVE, &ckFalse, sizeof(ckFalse) },
- { CKA_EXTRACTABLE, &ckTrue, sizeof(ckTrue) },
- { CKA_VALUE_LEN, &secSz, sizeof(secSz) }
- };
- CK_ULONG tmplCnt = sizeof(tmpl) / sizeof(*tmpl);
- ret = Pkcs11MechAvail(session, CKM_ECDH1_DERIVE);
- if (ret == 0 && info->pk.ecdh.outlen == NULL) {
- ret = BAD_FUNC_ARG;
- }
- if (ret == 0) {
- WOLFSSL_MSG("PKCS#11: EC Key Derivation Operation");
- if ((sessionKey = !mp_iszero(&info->pk.ecdh.private_key->k)))
- ret = Pkcs11CreateEccPrivateKey(&privateKey, session,
- info->pk.ecdh.private_key, CKA_DERIVE);
- else if (info->pk.ecdh.private_key->labelLen > 0) {
- ret = Pkcs11FindKeyByLabel(&privateKey, CKO_PRIVATE_KEY, CKK_EC,
- session,
- info->pk.ecdh.private_key->label,
- info->pk.ecdh.private_key->labelLen);
- }
- else if (info->pk.ecdh.private_key->idLen > 0) {
- ret = Pkcs11FindKeyById(&privateKey, CKO_PRIVATE_KEY, CKK_EC,
- session, info->pk.ecdh.private_key->id,
- info->pk.ecdh.private_key->idLen);
- }
- else {
- ret = Pkcs11FindEccKey(&privateKey, CKO_PRIVATE_KEY, session,
- info->pk.ecdh.public_key, CKA_DERIVE);
- }
- }
- if (ret == 0) {
- ret = wc_ecc_export_x963(info->pk.ecdh.public_key, NULL, &pointLen);
- if (ret == LENGTH_ONLY_E) {
- point = (unsigned char*)XMALLOC(pointLen,
- info->pk.ecdh.public_key->heap,
- DYNAMIC_TYPE_ECC_BUFFER);
- ret = wc_ecc_export_x963(info->pk.ecdh.public_key, point,
- &pointLen);
- }
- }
- if (ret == 0) {
- secSz = *info->pk.ecdh.outlen;
- if (secSz > (CK_ULONG)info->pk.ecdh.private_key->dp->size)
- secSz = info->pk.ecdh.private_key->dp->size;
- params.kdf = CKD_NULL;
- params.pSharedData = NULL;
- params.ulSharedDataLen = 0;
- params.pPublicData = point;
- params.ulPublicDataLen = pointLen;
- mech.mechanism = CKM_ECDH1_DERIVE;
- mech.ulParameterLen = sizeof(params);
- mech.pParameter = ¶ms;
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("ECDH key");
- pkcs11_dump_template(tmpl, tmplCnt);
- #endif
- rv = session->func->C_DeriveKey(session->handle, &mech, privateKey,
- tmpl, tmplCnt, &secret);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_DeriveKey", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- ret = Pkcs11ExtractSecret(session, secret, info->pk.ecdh.out,
- info->pk.ecdh.outlen);
- }
- if (sessionKey)
- session->func->C_DestroyObject(session->handle, privateKey);
- if (point != NULL)
- XFREE(point, info->pk.ecdh.public_key->heap, DYNAMIC_TYPE_ECC_BUFFER);
- return ret;
- }
- #endif
- /**
- * Encode, in place, the ECDSA signature.
- * Two fixed width values into ASN.1 DER encoded SEQ { INT, INT }
- *
- * @param [in,out] sig Signature data.
- * @param [in] sz Size of original signature data.
- * @return Length of the ASN.1 DER encoded signature.
- */
- static word32 Pkcs11ECDSASig_Encode(byte* sig, word32 sz)
- {
- word32 rHigh, sHigh, seqLen;
- word32 rStart = 0, sStart = 0;
- word32 sigSz, rSz, rLen, sSz, sLen;
- word32 i;
- /* Find first byte of data in r and s. */
- while (rStart < sz - 1 && sig[rStart] == 0x00)
- rStart++;
- while (sStart < sz - 1 && sig[sz + sStart] == 0x00)
- sStart++;
- /* Check if 0 needs to be prepended to make integer a positive number. */
- rHigh = sig[rStart] >> 7;
- sHigh = sig[sz + sStart] >> 7;
- /* Calculate length of integer to put into ASN.1 encoding. */
- rLen = sz - rStart;
- sLen = sz - sStart;
- /* r and s: INT (2 bytes) + [ 0x00 ] + integer */
- rSz = 2 + rHigh + rLen;
- sSz = 2 + sHigh + sLen;
- /* Calculate the complete ASN.1 DER encoded size. */
- sigSz = rSz + sSz;
- if (sigSz >= ASN_LONG_LENGTH)
- seqLen = 3;
- else
- seqLen = 2;
- /* Move s and then r integers into their final places. */
- XMEMMOVE(sig + seqLen + rSz + (sSz - sLen), sig + sz + sStart, sLen);
- XMEMMOVE(sig + seqLen + (rSz - rLen), sig + rStart, rLen);
- /* Put the ASN.1 DER encoding around data. */
- i = 0;
- sig[i++] = ASN_CONSTRUCTED | ASN_SEQUENCE;
- if (seqLen == 3)
- sig[i++] = ASN_LONG_LENGTH | 0x01;
- sig[i++] = sigSz;
- sig[i++] = ASN_INTEGER;
- sig[i++] = rHigh + (sz - rStart);
- if (rHigh)
- sig[i++] = 0x00;
- i += sz - rStart;
- sig[i++] = ASN_INTEGER;
- sig[i++] = sHigh + (sz - sStart);
- if (sHigh)
- sig[i] = 0x00;
- return seqLen + sigSz;
- }
- /**
- * Decode the ECDSA signature.
- * ASN.1 DER encode SEQ { INT, INT } converted to two fixed with values.
- *
- * @param [in] in ASN.1 DER encoded signature.
- * @param [in] inSz Size of ASN.1 signature.
- * @param [in] sig Output buffer.
- * @param [in] sz Size of output buffer.
- * @return ASN_PARSE_E when the ASN.1 encoding is invalid.
- * @return 0 on success.
- */
- static int Pkcs11ECDSASig_Decode(const byte* in, word32 inSz, byte* sig,
- word32 sz)
- {
- int ret = 0;
- word32 i = 0;
- byte tag;
- int len, seqLen = 2;
- /* Make sure zeros in place when decoding short integers. */
- XMEMSET(sig, 0, sz * 2);
- /* Check min data for: SEQ + INT. */
- if (inSz < 5)
- ret = ASN_PARSE_E;
- /* Check SEQ */
- if (ret == 0 && in[i++] != (ASN_CONSTRUCTED | ASN_SEQUENCE))
- ret = ASN_PARSE_E;
- if (ret == 0 && in[i] >= ASN_LONG_LENGTH) {
- if (in[i] != (ASN_LONG_LENGTH | 0x01))
- ret = ASN_PARSE_E;
- else {
- i++;
- seqLen++;
- }
- }
- if (ret == 0 && in[i++] != inSz - seqLen)
- ret = ASN_PARSE_E;
- /* Check INT */
- if (ret == 0 && GetASNTag(in, &i, &tag, inSz) != 0)
- ret = ASN_PARSE_E;
- if (ret == 0 && tag != ASN_INTEGER)
- ret = ASN_PARSE_E;
- if (ret == 0 && (len = in[i++]) > sz + 1)
- ret = ASN_PARSE_E;
- /* Check there is space for INT data */
- if (ret == 0 && i + len > inSz)
- ret = ASN_PARSE_E;
- if (ret == 0) {
- /* Skip leading zero */
- if (in[i] == 0x00) {
- i++;
- len--;
- }
- /* Copy r into sig. */
- XMEMCPY(sig + sz - len, in + i, len);
- i += len;
- }
- /* Check min data for: INT. */
- if (ret == 0 && i + 2 > inSz)
- ret = ASN_PARSE_E;
- /* Check INT */
- if (ret == 0 && GetASNTag(in, &i, &tag, inSz) != 0)
- ret = ASN_PARSE_E;
- if (ret == 0 && tag != ASN_INTEGER)
- ret = ASN_PARSE_E;
- if (ret == 0 && (len = in[i++]) > sz + 1)
- ret = ASN_PARSE_E;
- /* Check there is space for INT data */
- if (ret == 0 && i + len > inSz)
- ret = ASN_PARSE_E;
- if (ret == 0) {
- /* Skip leading zero */
- if (in[i] == 0x00) {
- i++;
- len--;
- }
- /* Copy s into sig. */
- XMEMCPY(sig + sz + sz - len, in + i, len);
- }
- return ret;
- }
- /**
- * Get the parameters from the private key on the device.
- *
- * @param [in] session Session object.
- * @param [in] privKey PKCS #11 object handle of private key..
- * @param [in] key Ecc key to set parameters against.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11GetEccParams(Pkcs11Session* session, CK_OBJECT_HANDLE privKey,
- ecc_key* key)
- {
- int ret = 0;
- int curveId;
- CK_RV rv;
- byte oid[16];
- CK_ATTRIBUTE template[] = {
- { CKA_EC_PARAMS, (CK_VOID_PTR)oid, sizeof(oid) }
- };
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Get Ec Params");
- pkcs11_dump_template(template, 1);
- #endif
- rv = session->func->C_GetAttributeValue(session->handle, privKey, template,
- 1);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetAttributeValue", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- #ifdef WOLFSSL_DEBUG_PKCS11
- WOLFSSL_MSG("Ec Params");
- pkcs11_dump_template(template, 1);
- #endif
- if (ret == 0) {
- /* PKCS #11 wraps the OID in ASN.1 */
- curveId = wc_ecc_get_curve_id_from_oid(oid + 2,
- (word32)template[0].ulValueLen - 2);
- if (curveId == ECC_CURVE_INVALID)
- ret = WC_HW_E;
- }
- if (ret == 0)
- ret = wc_ecc_set_curve(key, 0, curveId);
- return ret;
- }
- /**
- * Performs the ECDSA signing operation.
- *
- * @param session [in] Session object.
- * @param info [in] Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11ECDSA_Sign(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- int sessionKey = 0;
- word32 sz;
- CK_RV rv;
- CK_ULONG outLen;
- CK_MECHANISM mech;
- CK_MECHANISM_INFO mechInfo;
- CK_OBJECT_HANDLE privateKey = NULL_PTR;
- /* Check operation is supported. */
- rv = session->func->C_GetMechanismInfo(session->slotId, CKM_ECDSA,
- &mechInfo);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetMechanismInfo", rv);
- #endif
- if (rv != CKR_OK || (mechInfo.flags & CKF_SIGN) == 0)
- ret = NOT_COMPILED_IN;
- if (ret == 0 && info->pk.eccsign.outlen == NULL) {
- ret = BAD_FUNC_ARG;
- }
- if (ret == 0) {
- WOLFSSL_MSG("PKCS#11: EC Signing Operation");
- if ((sessionKey = !mp_iszero(&info->pk.eccsign.key->k)))
- ret = Pkcs11CreateEccPrivateKey(&privateKey, session,
- info->pk.eccsign.key, CKA_SIGN);
- else if (info->pk.eccsign.key->labelLen > 0) {
- ret = Pkcs11FindKeyByLabel(&privateKey, CKO_PRIVATE_KEY, CKK_EC,
- session, info->pk.eccsign.key->label,
- info->pk.eccsign.key->labelLen);
- if (ret == 0 && info->pk.eccsign.key->dp == NULL) {
- ret = Pkcs11GetEccParams(session, privateKey,
- info->pk.eccsign.key);
- }
- }
- else if (info->pk.eccsign.key->idLen > 0) {
- ret = Pkcs11FindKeyById(&privateKey, CKO_PRIVATE_KEY, CKK_EC,
- session, info->pk.eccsign.key->id,
- info->pk.eccsign.key->idLen);
- if (ret == 0 && info->pk.eccsign.key->dp == NULL) {
- ret = Pkcs11GetEccParams(session, privateKey,
- info->pk.eccsign.key);
- }
- }
- else {
- ret = Pkcs11FindEccKey(&privateKey, CKO_PRIVATE_KEY, session,
- info->pk.eccsign.key, CKA_SIGN);
- }
- }
- if (ret == 0) {
- sz = info->pk.eccsign.key->dp->size;
- /* Maximum encoded size is two ordinates + 8 bytes of ASN.1. */
- if (*info->pk.eccsign.outlen < (word32)wc_ecc_sig_size_calc(sz))
- ret = BUFFER_E;
- }
- if (ret == 0) {
- mech.mechanism = CKM_ECDSA;
- mech.ulParameterLen = 0;
- mech.pParameter = NULL;
- rv = session->func->C_SignInit(session->handle, &mech, privateKey);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_SignInit", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- outLen = *info->pk.eccsign.outlen;
- rv = session->func->C_Sign(session->handle,
- (CK_BYTE_PTR)info->pk.eccsign.in,
- info->pk.eccsign.inlen, info->pk.eccsign.out,
- &outLen);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_Sign", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- *info->pk.eccsign.outlen = Pkcs11ECDSASig_Encode(info->pk.eccsign.out,
- sz);
- }
- if (sessionKey)
- session->func->C_DestroyObject(session->handle, privateKey);
- return ret;
- }
- /**
- * Performs the ECDSA verification operation.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return MEMORY_E when a memory allocation fails.
- * @return 0 on success.
- */
- static int Pkcs11ECDSA_Verify(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- CK_RV rv;
- CK_MECHANISM mech;
- CK_MECHANISM_INFO mechInfo;
- CK_OBJECT_HANDLE publicKey = NULL_PTR;
- unsigned char* sig = NULL;
- word32 sz = info->pk.eccverify.key->dp->size;
- /* Check operation is supported. */
- rv = session->func->C_GetMechanismInfo(session->slotId, CKM_ECDSA,
- &mechInfo);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetMechanismInfo", rv);
- #endif
- if (rv != CKR_OK || (mechInfo.flags & CKF_VERIFY) == 0)
- ret = NOT_COMPILED_IN;
- if (ret == 0 && info->pk.eccverify.res == NULL) {
- ret = BAD_FUNC_ARG;
- }
- if (ret == 0) {
- WOLFSSL_MSG("PKCS#11: EC Verification Operation");
- ret = Pkcs11CreateEccPublicKey(&publicKey, session,
- info->pk.eccverify.key, CKA_VERIFY);
- }
- if (ret == 0) {
- sig = (unsigned char *)XMALLOC(sz * 2, info->pk.eccverify.key->heap,
- DYNAMIC_TYPE_TMP_BUFFER);
- if (sig == NULL)
- ret = MEMORY_E;
- }
- if (ret == 0) {
- ret = Pkcs11ECDSASig_Decode(info->pk.eccverify.sig,
- info->pk.eccverify.siglen, sig, sz);
- }
- if (ret == 0) {
- mech.mechanism = CKM_ECDSA;
- mech.ulParameterLen = 0;
- mech.pParameter = NULL;
- rv = session->func->C_VerifyInit(session->handle, &mech, publicKey);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_VerifyInit", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- *info->pk.eccverify.res = 0;
- rv = session->func->C_Verify(session->handle,
- (CK_BYTE_PTR)info->pk.eccverify.hash,
- info->pk.eccverify.hashlen,
- (CK_BYTE_PTR)sig, sz * 2);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_Verify", rv);
- #endif
- if (rv == CKR_SIGNATURE_INVALID) {
- }
- else if (rv != CKR_OK)
- ret = WC_HW_E;
- else
- *info->pk.eccverify.res = 1;
- }
- if (publicKey != NULL_PTR)
- session->func->C_DestroyObject(session->handle, publicKey);
- if (sig != NULL)
- XFREE(sig, info->pk.eccverify.key->heap, DYNAMIC_TYPE_TMP_BUFFER);
- return ret;
- }
- #endif
- #ifndef NO_RSA
- /**
- * Check the private RSA key matches the public key.
- *
- * @param [in] priv RSA private key.
- * @param [in] publicKey Encoded RSA public key.
- * @param [in] pubKeySize Length of encoded RSA public key.
- * @return MEMORY_E when a memory allocation fails.
- * @return MP_CMP_E when the public parts are different.
- * @return 0 on success.
- */
- static int wc_Pkcs11CheckPrivKey_Rsa(RsaKey* priv,
- const unsigned char* publicKey, word32 pubKeySize)
- {
- int ret = 0;
- #ifdef WOLFSSL_SMALL_STACK
- RsaKey* pub = NULL;
- #else
- RsaKey pub[1];
- #endif
- word32 keyIdx = 0;
- #ifdef WOLFSSL_SMALL_STACK
- pub = (RsaKey*)XMALLOC(sizeof(RsaKey), NULL, DYNAMIC_TYPE_RSA);
- if (pub == NULL) {
- ret = MEMORY_E;
- }
- #endif
- if ((ret == 0) && (ret = wc_InitRsaKey(pub, NULL)) == 0) {
- if (ret == 0) {
- ret = wc_RsaPublicKeyDecode(publicKey, &keyIdx, pub, pubKeySize);
- }
- if (ret == 0) {
- /* both keys extracted successfully now check n and e
- * values are the same. This is dereferencing RsaKey */
- if (mp_cmp(&(priv->n), &(pub->n)) != MP_EQ ||
- mp_cmp(&(priv->e), &(pub->e)) != MP_EQ) {
- ret = MP_CMP_E;
- }
- else
- ret = 0;
- }
- wc_FreeRsaKey(pub);
- }
- #ifdef WOLFSSL_SMALL_STACK
- if (pub != NULL) {
- XFREE(pub, NULL, DYNAMIC_TYPE_RSA);
- }
- #endif
- return ret;
- }
- /**
- * Checks the RSA private key matches the RSA public key.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return MEMORY_E when a memory allocation fails.
- * @return MEMORY_E when a memory allocation fails.
- * @return MP_CMP_E when the public parts are different.
- * @return 0 on success.
- */
- static int Pkcs11RsaCheckPrivKey(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- CK_OBJECT_HANDLE privateKey;
- RsaKey* priv = info->pk.rsa_check.key;
- if (mp_iszero(&priv->n) || mp_iszero(&priv->e)) {
- /* Get the RSA private key object. */
- if (priv->labelLen > 0) {
- ret = Pkcs11FindKeyByLabel(&privateKey, CKO_PRIVATE_KEY,
- CKK_RSA, session, priv->label,
- priv->labelLen);
- }
- else if (info->pk.rsa.key->idLen > 0) {
- ret = Pkcs11FindKeyById(&privateKey, CKO_PRIVATE_KEY, CKK_RSA,
- session, priv->id, priv->idLen);
- }
- else {
- ret = Pkcs11FindRsaKey(&privateKey, CKO_PRIVATE_KEY, session, priv);
- }
- if (ret == 0) {
- /* Extract the public key components. */
- ret = Pkcs11GetRsaPublicKey(priv, session, privateKey);
- }
- }
- if (ret == 0) {
- /* Compare the extracted public parts with the public key. */
- ret = wc_Pkcs11CheckPrivKey_Rsa(priv, info->pk.rsa_check.pubKey,
- info->pk.rsa_check.pubKeySz);
- }
- return ret;
- }
- #endif
- #ifdef HAVE_ECC
- /**
- * Check the private ECC key matches the public key.
- * Do this by looking up the public key data from the associated public key.
- * The public key object handle is passed in for the private key.
- *
- * @param [in] privateKey Handle to private key object.
- * @param [in] publicKey Encoded EC public key.
- * @param [in] pubKeySize Length of encoded EC public key.
- * @return MEMORY_E when a memory allocation fails.
- * @return MP_CMP_E when the public parts are different.
- * @return 0 on success.
- */
- static int wc_Pkcs11CheckPrivKey_Ecc(ecc_key* priv,
- const unsigned char* publicKey, word32 pubKeySize)
- {
- int ret = 0;
- #ifdef WOLFSSL_SMALL_STACK
- ecc_key* pub = NULL;
- #else
- ecc_key pub[1];
- #endif
- word32 keyIdx = 0;
- #ifdef WOLFSSL_SMALL_STACK
- pub = (ecc_key*)XMALLOC(sizeof(ecc_key), NULL, DYNAMIC_TYPE_ECC);
- if (pub == NULL) {
- ret = MEMORY_E;
- }
- #endif
- if ((ret == 0) && (ret = wc_ecc_init(pub)) == 0) {
- ret = wc_EccPublicKeyDecode(publicKey, &keyIdx, pub, pubKeySize);
- if (ret == 0) {
- /* both keys extracted successfully now check curve and
- * pubkey. */
- if ((pub->idx != priv->idx) || (wc_ecc_cmp_point(&priv->pubkey,
- &pub->pubkey) != MP_EQ)) {
- ret = MP_CMP_E;
- }
- else {
- ret = 0;
- }
- }
- wc_ecc_free(pub);
- }
- #ifdef WOLFSSL_SMALL_STACK
- if (pub != NULL) {
- XFREE(pub, NULL, DYNAMIC_TYPE_ECC);
- }
- #endif
- return ret;
- }
- /**
- * Checks the ECC private key matches the ECC public key.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return MEMORY_E when a memory allocation fails.
- * @return MEMORY_E when a memory allocation fails.
- * @return MP_CMP_E when the public parts are different.
- * @return 0 on success.
- */
- static int Pkcs11EccCheckPrivKey(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- ecc_key* priv = info->pk.ecc_check.key;
- CK_OBJECT_HANDLE privateKey;
- if (mp_iszero(priv->pubkey.x) || mp_iszero(priv->pubkey.y)) {
- /* Get the public key object as the private key object doesn't have
- * the public point stored in it.
- */
- if (priv->labelLen > 0) {
- ret = Pkcs11FindKeyByLabel(&privateKey, CKO_PUBLIC_KEY, CKK_EC,
- session, priv->label, priv->labelLen);
- }
- else if (priv->idLen > 0) {
- ret = Pkcs11FindKeyById(&privateKey, CKO_PUBLIC_KEY, CKK_EC,
- session, priv->id, priv->idLen);
- }
- else {
- ret = Pkcs11FindEccKey(&privateKey, CKO_PUBLIC_KEY, session, priv,
- CKA_SIGN);
- }
- if (ret == 0 && priv->dp == NULL) {
- /* Extract the group id. */
- ret = Pkcs11GetEccParams(session, privateKey, priv);
- }
- if (ret == 0) {
- /* Extract the public point. */
- ret = Pkcs11GetEccPublicKey(priv, session, privateKey);
- }
- }
- if (ret == 0) {
- /* Compare the extracted public parts with the public key. */
- ret = wc_Pkcs11CheckPrivKey_Ecc(priv, info->pk.ecc_check.pubKey,
- info->pk.ecc_check.pubKeySz);
- }
- return ret;
- }
- #endif
- #if !defined(NO_AES) && defined(HAVE_AESGCM)
- /**
- * Performs the AES-GCM encryption operation.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return MEMORY_E when a memory allocation fails.
- * @return 0 on success.
- */
- static int Pkcs11AesGcmEncrypt(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- CK_RV rv;
- Aes* aes = info->cipher.aesgcm_enc.aes;
- CK_GCM_PARAMS params;
- CK_MECHANISM_INFO mechInfo;
- CK_OBJECT_HANDLE key = NULL_PTR;
- CK_MECHANISM mech;
- CK_ULONG outLen;
- /* Check operation is supported. */
- rv = session->func->C_GetMechanismInfo(session->slotId, CKM_AES_GCM,
- &mechInfo);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetMechanismInfo", rv);
- #endif
- if (rv != CKR_OK || (mechInfo.flags & CKF_ENCRYPT) == 0)
- ret = NOT_COMPILED_IN;
- if (ret == 0) {
- WOLFSSL_MSG("PKCS#11: AES-GCM Encryption Operation");
- /* Create a private key object or find by label or id. */
- if (aes->idLen == 0 && aes->labelLen == 0) {
- ret = Pkcs11CreateSecretKey(&key, session, CKK_AES,
- (unsigned char*)aes->devKey,
- aes->keylen, NULL, 0, NULL, 0,
- CKA_ENCRYPT);
- }
- else if (aes->labelLen != 0) {
- ret = Pkcs11FindKeyByLabel(&key, CKO_SECRET_KEY, CKK_AES, session,
- aes->label, aes->labelLen);
- }
- else {
- ret = Pkcs11FindKeyById(&key, CKO_SECRET_KEY, CKK_AES, session,
- aes->id, aes->idLen);
- }
- }
- if (ret == 0) {
- params.pIv = (CK_BYTE_PTR)info->cipher.aesgcm_enc.iv;
- params.ulIvLen = info->cipher.aesgcm_enc.ivSz;
- params.pAAD = (CK_BYTE_PTR)info->cipher.aesgcm_enc.authIn;
- params.ulAADLen = info->cipher.aesgcm_enc.authInSz;
- params.ulTagBits = info->cipher.aesgcm_enc.authTagSz * 8;
- mech.mechanism = CKM_AES_GCM;
- mech.ulParameterLen = sizeof(params);
- mech.pParameter = ¶ms;
- rv = session->func->C_EncryptInit(session->handle, &mech, key);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_EncryptInit", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- outLen = info->cipher.aesgcm_enc.sz;
- rv = session->func->C_EncryptUpdate(session->handle,
- (CK_BYTE_PTR)info->cipher.aesgcm_enc.in,
- info->cipher.aesgcm_enc.sz,
- info->cipher.aesgcm_enc.out,
- &outLen);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_EncryptUpdate", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- /* Authentication tag comes out in final block. */
- outLen = info->cipher.aesgcm_enc.authTagSz;
- rv = session->func->C_EncryptFinal(session->handle,
- info->cipher.aesgcm_enc.authTag,
- &outLen);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_EncryptFinal", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (aes->idLen == 0 && aes->labelLen == 0 && key != NULL_PTR)
- session->func->C_DestroyObject(session->handle, key);
- return ret;
- }
- /**
- * Performs the AES-GCM decryption operation.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return MEMORY_E when a memory allocation fails.
- * @return 0 on success.
- */
- static int Pkcs11AesGcmDecrypt(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- CK_RV rv;
- Aes* aes = info->cipher.aesgcm_enc.aes;
- CK_GCM_PARAMS params;
- CK_MECHANISM_INFO mechInfo;
- CK_OBJECT_HANDLE key = NULL_PTR;
- CK_MECHANISM mech;
- CK_ULONG outLen;
- word32 len;
- /* Check operation is supported. */
- rv = session->func->C_GetMechanismInfo(session->slotId, CKM_AES_GCM,
- &mechInfo);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetMechanismInfo", rv);
- #endif
- if (rv != CKR_OK || (mechInfo.flags & CKF_DECRYPT) == 0)
- ret = NOT_COMPILED_IN;
- if (ret == 0) {
- WOLFSSL_MSG("PKCS#11: AES-GCM Decryption Operation");
- /* Create a private key object or find by id. */
- if (aes->idLen == 0 && aes->labelLen == 0) {
- ret = Pkcs11CreateSecretKey(&key, session, CKK_AES,
- (unsigned char*)aes->devKey,
- aes->keylen, NULL, 0, NULL, 0,
- CKA_DECRYPT);
- }
- else if (aes->labelLen != 0) {
- ret = Pkcs11FindKeyByLabel(&key, CKO_SECRET_KEY, CKK_AES, session,
- aes->label, aes->labelLen);
- }
- else {
- ret = Pkcs11FindKeyById(&key, CKO_SECRET_KEY, CKK_AES, session,
- aes->id, aes->idLen);
- }
- }
- if (ret == 0) {
- params.pIv = (CK_BYTE_PTR)info->cipher.aesgcm_dec.iv;
- params.ulIvLen = info->cipher.aesgcm_dec.ivSz;
- params.pAAD = (CK_BYTE_PTR)info->cipher.aesgcm_dec.authIn;
- params.ulAADLen = info->cipher.aesgcm_dec.authInSz;
- params.ulTagBits = info->cipher.aesgcm_dec.authTagSz * 8;
- mech.mechanism = CKM_AES_GCM;
- mech.ulParameterLen = sizeof(params);
- mech.pParameter = ¶ms;
- rv = session->func->C_DecryptInit(session->handle, &mech, key);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_DecryptInit", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- outLen = len = info->cipher.aesgcm_dec.sz;
- rv = session->func->C_DecryptUpdate(session->handle,
- (CK_BYTE_PTR)info->cipher.aesgcm_dec.in,
- info->cipher.aesgcm_dec.sz,
- info->cipher.aesgcm_dec.out,
- &outLen);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_DecryptUpdate", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- /* Put authentication tag in as encrypted data. */
- outLen = len = (len + info->cipher.aesgcm_dec.authTagSz -
- (word32)outLen);
- rv = session->func->C_DecryptUpdate(session->handle,
- (CK_BYTE_PTR)info->cipher.aesgcm_dec.authTag,
- info->cipher.aesgcm_dec.authTagSz,
- info->cipher.aesgcm_dec.out,
- &outLen);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_DecryptUpdate", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- outLen = len = (len - (word32)outLen);
- /* Decrypted data comes out now. */
- rv = session->func->C_DecryptFinal(session->handle,
- info->cipher.aesgcm_dec.out,
- &outLen);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_DecryptFinal", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (aes->idLen == 0 && aes->labelLen == 0 && key != NULL_PTR)
- session->func->C_DestroyObject(session->handle, key);
- return ret;
- }
- #endif
- #if !defined(NO_AES) && defined(HAVE_AES_CBC)
- /**
- * Performs the AES-CBC encryption operation.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return MEMORY_E when a memory allocation fails.
- * @return 0 on success.
- */
- static int Pkcs11AesCbcEncrypt(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- CK_RV rv;
- Aes* aes = info->cipher.aescbc.aes;
- CK_MECHANISM_INFO mechInfo;
- CK_OBJECT_HANDLE key = NULL_PTR;
- CK_MECHANISM mech;
- CK_ULONG outLen;
- /* Check operation is supported. */
- rv = session->func->C_GetMechanismInfo(session->slotId, CKM_AES_CBC,
- &mechInfo);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetMechanismInfo", rv);
- #endif
- if (rv != CKR_OK || (mechInfo.flags & CKF_ENCRYPT) == 0)
- ret = NOT_COMPILED_IN;
- if (ret == 0) {
- WOLFSSL_MSG("PKCS#11: AES-CBC Encryption Operation");
- /* Create a private key object or find by id. */
- if (aes->idLen == 0 && aes->labelLen == 0) {
- ret = Pkcs11CreateSecretKey(&key, session, CKK_AES,
- (unsigned char*)aes->devKey,
- aes->keylen, NULL, 0, NULL, 0,
- CKA_ENCRYPT);
- }
- else if (aes->labelLen != 0) {
- ret = Pkcs11FindKeyByLabel(&key, CKO_SECRET_KEY, CKK_AES, session,
- aes->label, aes->labelLen);
- }
- else {
- ret = Pkcs11FindKeyById(&key, CKO_SECRET_KEY, CKK_AES, session,
- aes->id, aes->idLen);
- }
- }
- if (ret == 0) {
- mech.mechanism = CKM_AES_CBC;
- mech.ulParameterLen = AES_BLOCK_SIZE;
- mech.pParameter = (CK_BYTE_PTR)info->cipher.aescbc.aes->reg;
- rv = session->func->C_EncryptInit(session->handle, &mech, key);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_EncryptInit", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- outLen = info->cipher.aescbc.sz;
- rv = session->func->C_Encrypt(session->handle,
- (CK_BYTE_PTR)info->cipher.aescbc.in,
- info->cipher.aescbc.sz,
- info->cipher.aescbc.out,
- &outLen);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_Encrypt", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (aes->idLen == 0 && aes->labelLen == 0 && key != NULL_PTR)
- session->func->C_DestroyObject(session->handle, key);
- return ret;
- }
- /**
- * Performs the AES-CBC decryption operation.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return MEMORY_E when a memory allocation fails.
- * @return 0 on success.
- */
- static int Pkcs11AesCbcDecrypt(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- CK_RV rv;
- Aes* aes = info->cipher.aescbc.aes;
- CK_MECHANISM_INFO mechInfo;
- CK_OBJECT_HANDLE key = NULL_PTR;
- CK_MECHANISM mech;
- CK_ULONG outLen;
- /* Check operation is supported. */
- rv = session->func->C_GetMechanismInfo(session->slotId, CKM_AES_CBC,
- &mechInfo);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetMechanismInfo", rv);
- #endif
- if (rv != CKR_OK || (mechInfo.flags & CKF_DECRYPT) == 0)
- ret = NOT_COMPILED_IN;
- if (ret == 0) {
- WOLFSSL_MSG("PKCS#11: AES-CBC Decryption Operation");
- /* Create a private key object or find by id. */
- if (aes->idLen == 0 && aes->labelLen == 0) {
- ret = Pkcs11CreateSecretKey(&key, session, CKK_AES,
- (unsigned char*)aes->devKey,
- aes->keylen, NULL, 0, NULL, 0,
- CKA_DECRYPT);
- }
- else if (aes->labelLen != 0) {
- ret = Pkcs11FindKeyByLabel(&key, CKO_SECRET_KEY, CKK_AES, session,
- aes->label, aes->labelLen);
- }
- else {
- ret = Pkcs11FindKeyById(&key, CKO_SECRET_KEY, CKK_AES, session,
- aes->id, aes->idLen);
- }
- }
- if (ret == 0) {
- mech.mechanism = CKM_AES_CBC;
- mech.ulParameterLen = AES_BLOCK_SIZE;
- mech.pParameter = (CK_BYTE_PTR)info->cipher.aescbc.aes->reg;
- rv = session->func->C_DecryptInit(session->handle, &mech, key);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_DecryptInit", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (ret == 0) {
- outLen = info->cipher.aescbc.sz;
- rv = session->func->C_DecryptUpdate(session->handle,
- (CK_BYTE_PTR)info->cipher.aescbc.in,
- info->cipher.aescbc.sz,
- info->cipher.aescbc.out,
- &outLen);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_DecryptUpdate", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- if (aes->idLen == 0 && aes->labelLen == 0 && key != NULL_PTR)
- session->func->C_DestroyObject(session->handle, key);
- return ret;
- }
- #endif
- #ifndef NO_HMAC
- /**
- * Updates or calculates the HMAC of the data.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11Hmac(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- CK_RV rv;
- Hmac* hmac = info->hmac.hmac;
- CK_MECHANISM_INFO mechInfo;
- CK_OBJECT_HANDLE key = NULL_PTR;
- CK_MECHANISM mech;
- CK_ULONG outLen;
- int mechType;
- int keyType;
- if (hmac->innerHashKeyed == WC_HMAC_INNER_HASH_KEYED_SW)
- ret = NOT_COMPILED_IN;
- if (ret == 0)
- ret = Pkcs11HmacTypes(info->hmac.macType, &mechType, &keyType);
- if (ret == 0) {
- /* Check operation is supported. */
- rv = session->func->C_GetMechanismInfo(session->slotId, mechType,
- &mechInfo);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GetMechanismInfo", rv);
- #endif
- if (rv != CKR_OK || (mechInfo.flags & CKF_SIGN) == 0)
- ret = NOT_COMPILED_IN;
- }
- /* Check whether key been used to initialized. */
- if (ret == 0 && !hmac->innerHashKeyed) {
- WOLFSSL_MSG("PKCS#11: HMAC Init");
- /* Check device supports key length. */
- if (mechInfo.ulMaxKeySize > 0 &&
- (hmac->keyLen < mechInfo.ulMinKeySize ||
- hmac->keyLen > mechInfo.ulMaxKeySize)) {
- WOLFSSL_MSG("PKCS#11: Key Length not supported");
- ret = NOT_COMPILED_IN;
- }
- /* Create a private key object or find by id. */
- if (ret == 0 && hmac->idLen == 0 && hmac->labelLen == 0) {
- ret = Pkcs11CreateSecretKey(&key, session, keyType,
- (unsigned char*)hmac->keyRaw, hmac->keyLen,
- NULL, 0, NULL, 0, CKA_SIGN);
- if (ret == WC_HW_E) {
- ret = Pkcs11CreateSecretKey(&key, session, CKK_GENERIC_SECRET,
- (unsigned char*)hmac->keyRaw, hmac->keyLen,
- NULL, 0, NULL, 0, CKA_SIGN);
- }
- }
- else if (ret == 0 && hmac->labelLen != 0) {
- ret = Pkcs11FindKeyByLabel(&key, CKO_SECRET_KEY, keyType, session,
- hmac->label, hmac->labelLen);
- if (ret == WC_HW_E) {
- ret = Pkcs11FindKeyByLabel(&key, CKO_SECRET_KEY,
- CKK_GENERIC_SECRET, session,
- hmac->label, hmac->labelLen);
- }
- }
- else if (ret == 0) {
- ret = Pkcs11FindKeyById(&key, CKO_SECRET_KEY, keyType, session,
- hmac->id, hmac->idLen);
- if (ret == WC_HW_E) {
- ret = Pkcs11FindKeyById(&key, CKO_SECRET_KEY,
- CKK_GENERIC_SECRET, session, hmac->id,
- hmac->idLen);
- }
- }
- /* Initialize HMAC operation */
- if (ret == 0) {
- mech.mechanism = mechType;
- mech.ulParameterLen = 0;
- mech.pParameter = NULL;
- rv = session->func->C_SignInit(session->handle, &mech, key);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_SignInit", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- }
- /* Don't initialize HMAC again if this succeeded */
- if (ret == 0)
- hmac->innerHashKeyed = WC_HMAC_INNER_HASH_KEYED_DEV;
- }
- /* Update the HMAC if input data passed in. */
- if (ret == 0 && info->hmac.inSz > 0) {
- WOLFSSL_MSG("PKCS#11: HMAC Update");
- rv = session->func->C_SignUpdate(session->handle,
- (CK_BYTE_PTR)info->hmac.in,
- info->hmac.inSz);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_SignUpdate", rv);
- #endif
- /* Some algorithm implementations only support C_Sign. */
- if (rv == CKR_MECHANISM_INVALID) {
- WOLFSSL_MSG("PKCS#11: HMAC Update/Final not supported");
- ret = NOT_COMPILED_IN;
- /* Allow software implementation to set key. */
- hmac->innerHashKeyed = 0;
- }
- else if (rv != CKR_OK)
- ret = WC_HW_E;
- }
- /* Calculate the HMAC result if output buffer specified. */
- if (ret == 0 && info->hmac.digest != NULL) {
- WOLFSSL_MSG("PKCS#11: HMAC Final");
- outLen = WC_MAX_DIGEST_SIZE;
- rv = session->func->C_SignFinal(session->handle,
- (CK_BYTE_PTR)info->hmac.digest,
- &outLen);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_SignFinal", rv);
- #endif
- /* Some algorithm implementations only support C_Sign. */
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- else
- hmac->innerHashKeyed = 0;
- }
- if (hmac->idLen == 0 && hmac->labelLen == 0 && key != NULL_PTR)
- session->func->C_DestroyObject(session->handle, key);
- return ret;
- }
- #endif
- #ifndef WC_NO_RNG
- #ifndef HAVE_HASHDRBG
- /**
- * Performs random number generation.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11RandomBlock(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- CK_RV rv;
- rv = session->func->C_GenerateRandom(session->handle, info->rng.out,
- info->rng.sz);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GenerateRandom", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- return ret;
- }
- #endif
- /**
- * Generates entropy (seed) data.
- *
- * @param [in] session Session object.
- * @param [in] info Cryptographic operation data.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- static int Pkcs11RandomSeed(Pkcs11Session* session, wc_CryptoInfo* info)
- {
- int ret = 0;
- CK_RV rv;
- rv = session->func->C_GenerateRandom(session->handle, info->seed.seed,
- info->seed.sz);
- #ifdef WOLFSSL_DEBUG_PKCS11
- pkcs11_rv("C_GenerateRandom", rv);
- #endif
- if (rv != CKR_OK) {
- ret = WC_HW_E;
- }
- return ret;
- }
- #endif
- /**
- * Perform a cryptographic operation using PKCS#11 device.
- *
- * @param [in] devId Device identifier.
- * @param [in] info Cryptographic operation data.
- * @param [in] ctx Context data for device - the token object.
- * @return WC_HW_E when a PKCS#11 library call fails.
- * @return 0 on success.
- */
- int wc_Pkcs11_CryptoDevCb(int devId, wc_CryptoInfo* info, void* ctx)
- {
- int ret = 0;
- Pkcs11Token* token = (Pkcs11Token*)ctx;
- Pkcs11Session session;
- int readWrite = 0;
- if (devId <= INVALID_DEVID || info == NULL || ctx == NULL)
- ret = BAD_FUNC_ARG;
- /* Open and close a session around each operation as the operation may not
- * be compiled in.
- */
- if (ret == 0) {
- if (info->algo_type == WC_ALGO_TYPE_PK) {
- #if !defined(NO_RSA) || defined(HAVE_ECC)
- switch (info->pk.type) {
- #ifndef NO_RSA
- case WC_PK_TYPE_RSA:
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11Rsa(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- break;
- #ifdef WOLFSSL_KEY_GEN
- case WC_PK_TYPE_RSA_KEYGEN:
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11RsaKeyGen(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- break;
- #endif
- case WC_PK_TYPE_RSA_CHECK_PRIV_KEY:
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11RsaCheckPrivKey(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- break;
- #endif
- #ifdef HAVE_ECC
- #ifndef NO_PKCS11_EC_KEYGEN
- case WC_PK_TYPE_EC_KEYGEN:
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11EcKeyGen(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- break;
- #endif
- #ifndef NO_PKCS11_ECDH
- case WC_PK_TYPE_ECDH:
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11ECDH(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- break;
- #endif
- case WC_PK_TYPE_ECDSA_SIGN:
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11ECDSA_Sign(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- break;
- case WC_PK_TYPE_ECDSA_VERIFY:
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11ECDSA_Verify(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- break;
- case WC_PK_TYPE_EC_CHECK_PRIV_KEY:
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11EccCheckPrivKey(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- break;
- #endif
- default:
- ret = NOT_COMPILED_IN;
- break;
- }
- #else
- ret = NOT_COMPILED_IN;
- #endif /* !NO_RSA || HAVE_ECC */
- }
- else if (info->algo_type == WC_ALGO_TYPE_CIPHER) {
- #ifndef NO_AES
- switch (info->cipher.type) {
- #ifdef HAVE_AESGCM
- case WC_CIPHER_AES_GCM:
- if (info->cipher.enc) {
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11AesGcmEncrypt(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- }
- else {
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11AesGcmDecrypt(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- }
- break;
- #endif
- #ifdef HAVE_AES_CBC
- case WC_CIPHER_AES_CBC:
- if (info->cipher.enc) {
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11AesCbcEncrypt(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- }
- else {
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11AesCbcDecrypt(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- }
- break;
- #endif
- }
- #else
- ret = NOT_COMPILED_IN;
- #endif
- }
- else if (info->algo_type == WC_ALGO_TYPE_HMAC) {
- #ifndef NO_HMAC
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11Hmac(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- #else
- ret = NOT_COMPILED_IN;
- #endif
- }
- else if (info->algo_type == WC_ALGO_TYPE_RNG) {
- #if !defined(WC_NO_RNG) && !defined(HAVE_HASHDRBG)
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11RandomBlock(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- #else
- ret = NOT_COMPILED_IN;
- #endif
- }
- else if (info->algo_type == WC_ALGO_TYPE_SEED) {
- #ifndef WC_NO_RNG
- ret = Pkcs11OpenSession(token, &session, readWrite);
- if (ret == 0) {
- ret = Pkcs11RandomSeed(&session, info);
- Pkcs11CloseSession(token, &session);
- }
- #else
- ret = NOT_COMPILED_IN;
- #endif
- }
- else
- ret = NOT_COMPILED_IN;
- }
- return ret;
- }
- #endif /* HAVE_PKCS11 */
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