3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
61 # include "internal/cryptlib.h"
62 # include <openssl/hmac.h>
63 # include <openssl/rand.h>
64 # include <openssl/pkcs12.h>
67 int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
68 unsigned char *mac, unsigned int *maclen)
70 const EVP_MD *md_type;
72 unsigned char key[EVP_MAX_MD_SIZE], *salt;
76 if (!PKCS7_type_is_data(p12->authsafes)) {
77 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_CONTENT_TYPE_NOT_DATA);
81 salt = p12->mac->salt->data;
82 saltlen = p12->mac->salt->length;
86 iter = ASN1_INTEGER_get(p12->mac->iter);
87 if ((md_type = EVP_get_digestbyobj(p12->mac->dinfo->algor->algorithm))
89 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
92 md_size = EVP_MD_size(md_type);
95 if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter,
96 md_size, key, md_type)) {
97 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
100 HMAC_CTX_init(&hmac);
101 if (!HMAC_Init_ex(&hmac, key, md_size, md_type, NULL)
102 || !HMAC_Update(&hmac, p12->authsafes->d.data->data,
103 p12->authsafes->d.data->length)
104 || !HMAC_Final(&hmac, mac, maclen)) {
105 HMAC_CTX_cleanup(&hmac);
108 HMAC_CTX_cleanup(&hmac);
113 int PKCS12_verify_mac(PKCS12 *p12, const char *pass, int passlen)
115 unsigned char mac[EVP_MAX_MD_SIZE];
117 if (p12->mac == NULL) {
118 PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_ABSENT);
121 if (!PKCS12_gen_mac(p12, pass, passlen, mac, &maclen)) {
122 PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_GENERATION_ERROR);
125 if ((maclen != (unsigned int)p12->mac->dinfo->digest->length)
126 || memcmp(mac, p12->mac->dinfo->digest->data, maclen))
133 int PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen,
134 unsigned char *salt, int saltlen, int iter,
135 const EVP_MD *md_type)
137 unsigned char mac[EVP_MAX_MD_SIZE];
141 md_type = EVP_sha1();
142 if (PKCS12_setup_mac(p12, iter, salt, saltlen, md_type) == PKCS12_ERROR) {
143 PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_SETUP_ERROR);
146 if (!PKCS12_gen_mac(p12, pass, passlen, mac, &maclen)) {
147 PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_GENERATION_ERROR);
150 if (!(ASN1_OCTET_STRING_set(p12->mac->dinfo->digest, mac, maclen))) {
151 PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_STRING_SET_ERROR);
157 /* Set up a mac structure */
158 int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, int saltlen,
159 const EVP_MD *md_type)
161 if ((p12->mac = PKCS12_MAC_DATA_new()) == NULL)
164 if ((p12->mac->iter = ASN1_INTEGER_new()) == NULL) {
165 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
168 if (!ASN1_INTEGER_set(p12->mac->iter, iter)) {
169 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
174 saltlen = PKCS12_SALT_LEN;
175 p12->mac->salt->length = saltlen;
176 if ((p12->mac->salt->data = OPENSSL_malloc(saltlen)) == NULL) {
177 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
181 if (RAND_bytes(p12->mac->salt->data, saltlen) <= 0)
184 memcpy(p12->mac->salt->data, salt, saltlen);
185 p12->mac->dinfo->algor->algorithm = OBJ_nid2obj(EVP_MD_type(md_type));
186 if ((p12->mac->dinfo->algor->parameter = ASN1_TYPE_new()) == NULL) {
187 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
190 p12->mac->dinfo->algor->parameter->type = V_ASN1_NULL;