| /* p12_mutl.c */ |
| /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| * project 1999. |
| */ |
| /* ==================================================================== |
| * Copyright (c) 1999 The OpenSSL Project. All rights reserved. |
| * |
| * 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 above 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 acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| * |
| * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. For written permission, please contact |
| * licensing@OpenSSL.org. |
| * |
| * 5. Products derived from this software may not be called "OpenSSL" |
| * nor may "OpenSSL" appear in their names without prior written |
| * permission of the OpenSSL Project. |
| * |
| * 6. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| * EXPRESSED 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 OpenSSL PROJECT OR |
| * ITS 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. |
| * ==================================================================== |
| * |
| * This product includes cryptographic software written by Eric Young |
| * (eay@cryptsoft.com). This product includes software written by Tim |
| * Hudson (tjh@cryptsoft.com). |
| * |
| */ |
| |
| #ifndef OPENSSL_NO_HMAC |
| #include <stdio.h> |
| #include "cryptlib.h" |
| #include <openssl/hmac.h> |
| #include <openssl/rand.h> |
| #include <openssl/pkcs12.h> |
| |
| /* Generate a MAC */ |
| int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen, |
| unsigned char *mac, unsigned int *maclen) |
| { |
| const EVP_MD *md_type; |
| HMAC_CTX hmac; |
| unsigned char key[EVP_MAX_MD_SIZE], *salt; |
| int saltlen, iter; |
| |
| if (!PKCS7_type_is_data(p12->authsafes)) |
| { |
| PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_CONTENT_TYPE_NOT_DATA); |
| return 0; |
| } |
| |
| salt = p12->mac->salt->data; |
| saltlen = p12->mac->salt->length; |
| if (!p12->mac->iter) iter = 1; |
| else iter = ASN1_INTEGER_get (p12->mac->iter); |
| if(!(md_type = |
| EVP_get_digestbyobj (p12->mac->dinfo->algor->algorithm))) { |
| PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_UNKNOWN_DIGEST_ALGORITHM); |
| return 0; |
| } |
| if(!PKCS12_key_gen (pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter, |
| EVP_MD_size(md_type), key, md_type)) { |
| PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_KEY_GEN_ERROR); |
| return 0; |
| } |
| HMAC_CTX_init(&hmac); |
| HMAC_Init_ex(&hmac, key, EVP_MD_size(md_type), md_type, NULL); |
| HMAC_Update(&hmac, p12->authsafes->d.data->data, |
| p12->authsafes->d.data->length); |
| HMAC_Final(&hmac, mac, maclen); |
| HMAC_CTX_cleanup(&hmac); |
| return 1; |
| } |
| |
| /* Verify the mac */ |
| int PKCS12_verify_mac(PKCS12 *p12, const char *pass, int passlen) |
| { |
| unsigned char mac[EVP_MAX_MD_SIZE]; |
| unsigned int maclen; |
| if(p12->mac == NULL) { |
| PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC,PKCS12_R_MAC_ABSENT); |
| return 0; |
| } |
| if (!PKCS12_gen_mac (p12, pass, passlen, mac, &maclen)) { |
| PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC,PKCS12_R_MAC_GENERATION_ERROR); |
| return 0; |
| } |
| if ((maclen != (unsigned int)p12->mac->dinfo->digest->length) |
| || memcmp (mac, p12->mac->dinfo->digest->data, maclen)) return 0; |
| return 1; |
| } |
| |
| /* Set a mac */ |
| |
| int PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen, |
| unsigned char *salt, int saltlen, int iter, const EVP_MD *md_type) |
| { |
| unsigned char mac[EVP_MAX_MD_SIZE]; |
| unsigned int maclen; |
| |
| if (!md_type) md_type = EVP_sha1(); |
| if (PKCS12_setup_mac (p12, iter, salt, saltlen, md_type) == |
| PKCS12_ERROR) { |
| PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_SETUP_ERROR); |
| return 0; |
| } |
| if (!PKCS12_gen_mac (p12, pass, passlen, mac, &maclen)) { |
| PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_GENERATION_ERROR); |
| return 0; |
| } |
| if (!(M_ASN1_OCTET_STRING_set (p12->mac->dinfo->digest, mac, maclen))) { |
| PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_STRING_SET_ERROR); |
| return 0; |
| } |
| return 1; |
| } |
| |
| /* Set up a mac structure */ |
| int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, int saltlen, |
| const EVP_MD *md_type) |
| { |
| if (!(p12->mac = PKCS12_MAC_DATA_new())) return PKCS12_ERROR; |
| if (iter > 1) { |
| if(!(p12->mac->iter = M_ASN1_INTEGER_new())) { |
| PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| if (!ASN1_INTEGER_set(p12->mac->iter, iter)) { |
| PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| } |
| if (!saltlen) saltlen = PKCS12_SALT_LEN; |
| p12->mac->salt->length = saltlen; |
| if (!(p12->mac->salt->data = OPENSSL_malloc (saltlen))) { |
| PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| if (!salt) { |
| if (RAND_pseudo_bytes (p12->mac->salt->data, saltlen) < 0) |
| return 0; |
| } |
| else memcpy (p12->mac->salt->data, salt, saltlen); |
| p12->mac->dinfo->algor->algorithm = OBJ_nid2obj(EVP_MD_type(md_type)); |
| if (!(p12->mac->dinfo->algor->parameter = ASN1_TYPE_new())) { |
| PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| p12->mac->dinfo->algor->parameter->type = V_ASN1_NULL; |
| |
| return 1; |
| } |
| #endif |
