123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335 |
- /* crypto/asn1/n_pkey.c */
- /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
- #include <stdio.h>
- #include "cryptlib.h"
- #ifndef OPENSSL_NO_RSA
- # include <openssl/rsa.h>
- # include <openssl/objects.h>
- # include <openssl/asn1t.h>
- # include <openssl/asn1_mac.h>
- # include <openssl/evp.h>
- # include <openssl/x509.h>
- # ifndef OPENSSL_NO_RC4
- typedef struct netscape_pkey_st {
- long version;
- X509_ALGOR *algor;
- ASN1_OCTET_STRING *private_key;
- } NETSCAPE_PKEY;
- typedef struct netscape_encrypted_pkey_st {
- ASN1_OCTET_STRING *os;
- /*
- * This is the same structure as DigestInfo so use it: although this
- * isn't really anything to do with digests.
- */
- X509_SIG *enckey;
- } NETSCAPE_ENCRYPTED_PKEY;
- ASN1_BROKEN_SEQUENCE(NETSCAPE_ENCRYPTED_PKEY) = {
- ASN1_SIMPLE(NETSCAPE_ENCRYPTED_PKEY, os, ASN1_OCTET_STRING),
- ASN1_SIMPLE(NETSCAPE_ENCRYPTED_PKEY, enckey, X509_SIG)
- } ASN1_BROKEN_SEQUENCE_END(NETSCAPE_ENCRYPTED_PKEY)
- DECLARE_ASN1_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY)
- DECLARE_ASN1_ENCODE_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY,NETSCAPE_ENCRYPTED_PKEY)
- IMPLEMENT_ASN1_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY)
- ASN1_SEQUENCE(NETSCAPE_PKEY) = {
- ASN1_SIMPLE(NETSCAPE_PKEY, version, LONG),
- ASN1_SIMPLE(NETSCAPE_PKEY, algor, X509_ALGOR),
- ASN1_SIMPLE(NETSCAPE_PKEY, private_key, ASN1_OCTET_STRING)
- } ASN1_SEQUENCE_END(NETSCAPE_PKEY)
- DECLARE_ASN1_FUNCTIONS_const(NETSCAPE_PKEY)
- DECLARE_ASN1_ENCODE_FUNCTIONS_const(NETSCAPE_PKEY,NETSCAPE_PKEY)
- IMPLEMENT_ASN1_FUNCTIONS_const(NETSCAPE_PKEY)
- static RSA *d2i_RSA_NET_2(RSA **a, ASN1_OCTET_STRING *os,
- int (*cb) (char *buf, int len, const char *prompt,
- int verify), int sgckey);
- int i2d_Netscape_RSA(const RSA *a, unsigned char **pp,
- int (*cb) (char *buf, int len, const char *prompt,
- int verify))
- {
- return i2d_RSA_NET(a, pp, cb, 0);
- }
- int i2d_RSA_NET(const RSA *a, unsigned char **pp,
- int (*cb) (char *buf, int len, const char *prompt,
- int verify), int sgckey)
- {
- int i, j, ret = 0;
- int rsalen, pkeylen, olen;
- NETSCAPE_PKEY *pkey = NULL;
- NETSCAPE_ENCRYPTED_PKEY *enckey = NULL;
- unsigned char buf[256], *zz;
- unsigned char key[EVP_MAX_KEY_LENGTH];
- EVP_CIPHER_CTX ctx;
- if (a == NULL)
- return (0);
- if ((pkey = NETSCAPE_PKEY_new()) == NULL)
- goto err;
- if ((enckey = NETSCAPE_ENCRYPTED_PKEY_new()) == NULL)
- goto err;
- pkey->version = 0;
- pkey->algor->algorithm = OBJ_nid2obj(NID_rsaEncryption);
- if ((pkey->algor->parameter = ASN1_TYPE_new()) == NULL)
- goto err;
- pkey->algor->parameter->type = V_ASN1_NULL;
- rsalen = i2d_RSAPrivateKey(a, NULL);
- /*
- * Fake some octet strings just for the initial length calculation.
- */
- pkey->private_key->length = rsalen;
- pkeylen = i2d_NETSCAPE_PKEY(pkey, NULL);
- enckey->enckey->digest->length = pkeylen;
- enckey->os->length = 11; /* "private-key" */
- enckey->enckey->algor->algorithm = OBJ_nid2obj(NID_rc4);
- if ((enckey->enckey->algor->parameter = ASN1_TYPE_new()) == NULL)
- goto err;
- enckey->enckey->algor->parameter->type = V_ASN1_NULL;
- if (pp == NULL) {
- olen = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, NULL);
- NETSCAPE_PKEY_free(pkey);
- NETSCAPE_ENCRYPTED_PKEY_free(enckey);
- return olen;
- }
- /* Since its RC4 encrypted length is actual length */
- if ((zz = (unsigned char *)OPENSSL_malloc(rsalen)) == NULL) {
- ASN1err(ASN1_F_I2D_RSA_NET, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- pkey->private_key->data = zz;
- /* Write out private key encoding */
- i2d_RSAPrivateKey(a, &zz);
- if ((zz = OPENSSL_malloc(pkeylen)) == NULL) {
- ASN1err(ASN1_F_I2D_RSA_NET, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if (!ASN1_STRING_set(enckey->os, "private-key", -1)) {
- ASN1err(ASN1_F_I2D_RSA_NET, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- enckey->enckey->digest->data = zz;
- i2d_NETSCAPE_PKEY(pkey, &zz);
- /* Wipe the private key encoding */
- OPENSSL_cleanse(pkey->private_key->data, rsalen);
- if (cb == NULL)
- cb = EVP_read_pw_string;
- i = cb((char *)buf, 256, "Enter Private Key password:", 1);
- if (i != 0) {
- ASN1err(ASN1_F_I2D_RSA_NET, ASN1_R_BAD_PASSWORD_READ);
- goto err;
- }
- i = strlen((char *)buf);
- /* If the key is used for SGC the algorithm is modified a little. */
- if (sgckey) {
- EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL);
- memcpy(buf + 16, "SGCKEYSALT", 10);
- i = 26;
- }
- EVP_BytesToKey(EVP_rc4(), EVP_md5(), NULL, buf, i, 1, key, NULL);
- OPENSSL_cleanse(buf, 256);
- /* Encrypt private key in place */
- zz = enckey->enckey->digest->data;
- EVP_CIPHER_CTX_init(&ctx);
- EVP_EncryptInit_ex(&ctx, EVP_rc4(), NULL, key, NULL);
- EVP_EncryptUpdate(&ctx, zz, &i, zz, pkeylen);
- EVP_EncryptFinal_ex(&ctx, zz + i, &j);
- EVP_CIPHER_CTX_cleanup(&ctx);
- ret = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, pp);
- err:
- NETSCAPE_ENCRYPTED_PKEY_free(enckey);
- NETSCAPE_PKEY_free(pkey);
- return (ret);
- }
- RSA *d2i_Netscape_RSA(RSA **a, const unsigned char **pp, long length,
- int (*cb) (char *buf, int len, const char *prompt,
- int verify))
- {
- return d2i_RSA_NET(a, pp, length, cb, 0);
- }
- RSA *d2i_RSA_NET(RSA **a, const unsigned char **pp, long length,
- int (*cb) (char *buf, int len, const char *prompt,
- int verify), int sgckey)
- {
- RSA *ret = NULL;
- const unsigned char *p;
- NETSCAPE_ENCRYPTED_PKEY *enckey = NULL;
- p = *pp;
- enckey = d2i_NETSCAPE_ENCRYPTED_PKEY(NULL, &p, length);
- if (!enckey) {
- ASN1err(ASN1_F_D2I_RSA_NET, ASN1_R_DECODING_ERROR);
- return NULL;
- }
- if ((enckey->os->length != 11) || (strncmp("private-key",
- (char *)enckey->os->data,
- 11) != 0)) {
- ASN1err(ASN1_F_D2I_RSA_NET, ASN1_R_PRIVATE_KEY_HEADER_MISSING);
- NETSCAPE_ENCRYPTED_PKEY_free(enckey);
- return NULL;
- }
- if (OBJ_obj2nid(enckey->enckey->algor->algorithm) != NID_rc4) {
- ASN1err(ASN1_F_D2I_RSA_NET, ASN1_R_UNSUPPORTED_ENCRYPTION_ALGORITHM);
- goto err;
- }
- if (cb == NULL)
- cb = EVP_read_pw_string;
- if ((ret = d2i_RSA_NET_2(a, enckey->enckey->digest, cb, sgckey)) == NULL)
- goto err;
- *pp = p;
- err:
- NETSCAPE_ENCRYPTED_PKEY_free(enckey);
- return ret;
- }
- static RSA *d2i_RSA_NET_2(RSA **a, ASN1_OCTET_STRING *os,
- int (*cb) (char *buf, int len, const char *prompt,
- int verify), int sgckey)
- {
- NETSCAPE_PKEY *pkey = NULL;
- RSA *ret = NULL;
- int i, j;
- unsigned char buf[256];
- const unsigned char *zz;
- unsigned char key[EVP_MAX_KEY_LENGTH];
- EVP_CIPHER_CTX ctx;
- i = cb((char *)buf, 256, "Enter Private Key password:", 0);
- if (i != 0) {
- ASN1err(ASN1_F_D2I_RSA_NET_2, ASN1_R_BAD_PASSWORD_READ);
- goto err;
- }
- i = strlen((char *)buf);
- if (sgckey) {
- EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL);
- memcpy(buf + 16, "SGCKEYSALT", 10);
- i = 26;
- }
- EVP_BytesToKey(EVP_rc4(), EVP_md5(), NULL, buf, i, 1, key, NULL);
- OPENSSL_cleanse(buf, 256);
- EVP_CIPHER_CTX_init(&ctx);
- EVP_DecryptInit_ex(&ctx, EVP_rc4(), NULL, key, NULL);
- EVP_DecryptUpdate(&ctx, os->data, &i, os->data, os->length);
- EVP_DecryptFinal_ex(&ctx, &(os->data[i]), &j);
- EVP_CIPHER_CTX_cleanup(&ctx);
- os->length = i + j;
- zz = os->data;
- if ((pkey = d2i_NETSCAPE_PKEY(NULL, &zz, os->length)) == NULL) {
- ASN1err(ASN1_F_D2I_RSA_NET_2,
- ASN1_R_UNABLE_TO_DECODE_RSA_PRIVATE_KEY);
- goto err;
- }
- zz = pkey->private_key->data;
- if ((ret = d2i_RSAPrivateKey(a, &zz, pkey->private_key->length)) == NULL) {
- ASN1err(ASN1_F_D2I_RSA_NET_2, ASN1_R_UNABLE_TO_DECODE_RSA_KEY);
- goto err;
- }
- err:
- NETSCAPE_PKEY_free(pkey);
- return (ret);
- }
- # endif /* OPENSSL_NO_RC4 */
- #else /* !OPENSSL_NO_RSA */
- # if PEDANTIC
- static void *dummy = &dummy;
- # endif
- #endif
|