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195 lines
6.9 KiB
195 lines
6.9 KiB
/* p12_mutl.c */ |
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/* |
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* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project |
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* 1999. |
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*/ |
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/* ==================================================================== |
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* Copyright (c) 1999 The OpenSSL Project. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. All advertising materials mentioning features or use of this |
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* software must display the following acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
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* |
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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* endorse or promote products derived from this software without |
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* prior written permission. For written permission, please contact |
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* licensing@OpenSSL.org. |
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* |
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* 5. Products derived from this software may not be called "OpenSSL" |
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* nor may "OpenSSL" appear in their names without prior written |
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* permission of the OpenSSL Project. |
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* |
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* 6. Redistributions of any form whatsoever must retain the following |
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* acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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* OF THE POSSIBILITY OF SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This product includes cryptographic software written by Eric Young |
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* (eay@cryptsoft.com). This product includes software written by Tim |
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* Hudson (tjh@cryptsoft.com). |
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* |
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*/ |
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#ifndef OPENSSL_NO_HMAC |
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# include <stdio.h> |
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# include "cryptlib.h" |
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# include <openssl/crypto.h> |
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# include <openssl/hmac.h> |
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# include <openssl/rand.h> |
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# include <openssl/pkcs12.h> |
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/* Generate a MAC */ |
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int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen, |
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unsigned char *mac, unsigned int *maclen) |
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{ |
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const EVP_MD *md_type; |
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HMAC_CTX hmac; |
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unsigned char key[EVP_MAX_MD_SIZE], *salt; |
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int saltlen, iter; |
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int md_size; |
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if (!PKCS7_type_is_data(p12->authsafes)) { |
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PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_CONTENT_TYPE_NOT_DATA); |
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return 0; |
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} |
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salt = p12->mac->salt->data; |
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saltlen = p12->mac->salt->length; |
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if (!p12->mac->iter) |
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iter = 1; |
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else |
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iter = ASN1_INTEGER_get(p12->mac->iter); |
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if (!(md_type = EVP_get_digestbyobj(p12->mac->dinfo->algor->algorithm))) { |
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PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM); |
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return 0; |
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} |
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md_size = EVP_MD_size(md_type); |
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if (md_size < 0) |
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return 0; |
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if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter, |
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md_size, key, md_type)) { |
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PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR); |
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return 0; |
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} |
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HMAC_CTX_init(&hmac); |
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if (!HMAC_Init_ex(&hmac, key, md_size, md_type, NULL) |
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|| !HMAC_Update(&hmac, p12->authsafes->d.data->data, |
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p12->authsafes->d.data->length) |
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|| !HMAC_Final(&hmac, mac, maclen)) { |
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HMAC_CTX_cleanup(&hmac); |
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return 0; |
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} |
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HMAC_CTX_cleanup(&hmac); |
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return 1; |
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} |
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/* Verify the mac */ |
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int PKCS12_verify_mac(PKCS12 *p12, const char *pass, int passlen) |
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{ |
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unsigned char mac[EVP_MAX_MD_SIZE]; |
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unsigned int maclen; |
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if (p12->mac == NULL) { |
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PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_ABSENT); |
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return 0; |
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} |
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if (!PKCS12_gen_mac(p12, pass, passlen, mac, &maclen)) { |
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PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_GENERATION_ERROR); |
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return 0; |
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} |
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if ((maclen != (unsigned int)p12->mac->dinfo->digest->length) |
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|| CRYPTO_memcmp(mac, p12->mac->dinfo->digest->data, maclen)) |
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return 0; |
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return 1; |
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} |
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/* Set a mac */ |
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int PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen, |
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unsigned char *salt, int saltlen, int iter, |
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const EVP_MD *md_type) |
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{ |
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unsigned char mac[EVP_MAX_MD_SIZE]; |
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unsigned int maclen; |
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if (!md_type) |
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md_type = EVP_sha1(); |
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if (PKCS12_setup_mac(p12, iter, salt, saltlen, md_type) == PKCS12_ERROR) { |
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PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_SETUP_ERROR); |
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return 0; |
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} |
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if (!PKCS12_gen_mac(p12, pass, passlen, mac, &maclen)) { |
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PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_GENERATION_ERROR); |
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return 0; |
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} |
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if (!(M_ASN1_OCTET_STRING_set(p12->mac->dinfo->digest, mac, maclen))) { |
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PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_STRING_SET_ERROR); |
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return 0; |
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} |
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return 1; |
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} |
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/* Set up a mac structure */ |
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int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, int saltlen, |
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const EVP_MD *md_type) |
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{ |
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if (!(p12->mac = PKCS12_MAC_DATA_new())) |
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return PKCS12_ERROR; |
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if (iter > 1) { |
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if (!(p12->mac->iter = M_ASN1_INTEGER_new())) { |
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PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); |
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return 0; |
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} |
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if (!ASN1_INTEGER_set(p12->mac->iter, iter)) { |
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PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); |
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return 0; |
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} |
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} |
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if (!saltlen) |
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saltlen = PKCS12_SALT_LEN; |
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if ((p12->mac->salt->data = OPENSSL_malloc(saltlen)) == NULL) { |
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PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); |
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return 0; |
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} |
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p12->mac->salt->length = saltlen; |
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if (!salt) { |
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if (RAND_bytes(p12->mac->salt->data, saltlen) <= 0) |
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return 0; |
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} else |
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memcpy(p12->mac->salt->data, salt, saltlen); |
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p12->mac->dinfo->algor->algorithm = OBJ_nid2obj(EVP_MD_type(md_type)); |
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if (!(p12->mac->dinfo->algor->parameter = ASN1_TYPE_new())) { |
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PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); |
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return 0; |
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} |
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p12->mac->dinfo->algor->parameter->type = V_ASN1_NULL; |
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return 1; |
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} |
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#endif
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