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).
60 #ifndef OPENSSL_NO_HMAC
62 # include "cryptlib.h"
63 # include <openssl/crypto.h>
64 # include <openssl/hmac.h>
65 # include <openssl/rand.h>
66 # include <openssl/pkcs12.h>
69 int PKCS12_gen_mac(PKCS12
*p12
, const char *pass
, int passlen
,
70 unsigned char *mac
, unsigned int *maclen
)
72 const EVP_MD
*md_type
;
74 unsigned char key
[EVP_MAX_MD_SIZE
], *salt
;
78 if (!PKCS7_type_is_data(p12
->authsafes
)) {
79 PKCS12err(PKCS12_F_PKCS12_GEN_MAC
, PKCS12_R_CONTENT_TYPE_NOT_DATA
);
83 salt
= p12
->mac
->salt
->data
;
84 saltlen
= p12
->mac
->salt
->length
;
88 iter
= ASN1_INTEGER_get(p12
->mac
->iter
);
89 if (!(md_type
= EVP_get_digestbyobj(p12
->mac
->dinfo
->algor
->algorithm
))) {
90 PKCS12err(PKCS12_F_PKCS12_GEN_MAC
, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM
);
93 md_size
= EVP_MD_size(md_type
);
96 if (!PKCS12_key_gen(pass
, passlen
, salt
, saltlen
, PKCS12_MAC_ID
, iter
,
97 md_size
, key
, md_type
)) {
98 PKCS12err(PKCS12_F_PKCS12_GEN_MAC
, PKCS12_R_KEY_GEN_ERROR
);
101 HMAC_CTX_init(&hmac
);
102 if (!HMAC_Init_ex(&hmac
, key
, md_size
, md_type
, NULL
)
103 || !HMAC_Update(&hmac
, p12
->authsafes
->d
.data
->data
,
104 p12
->authsafes
->d
.data
->length
)
105 || !HMAC_Final(&hmac
, mac
, maclen
)) {
106 HMAC_CTX_cleanup(&hmac
);
109 HMAC_CTX_cleanup(&hmac
);
114 int PKCS12_verify_mac(PKCS12
*p12
, const char *pass
, int passlen
)
116 unsigned char mac
[EVP_MAX_MD_SIZE
];
118 if (p12
->mac
== NULL
) {
119 PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC
, PKCS12_R_MAC_ABSENT
);
122 if (!PKCS12_gen_mac(p12
, pass
, passlen
, mac
, &maclen
)) {
123 PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC
, PKCS12_R_MAC_GENERATION_ERROR
);
126 if ((maclen
!= (unsigned int)p12
->mac
->dinfo
->digest
->length
)
127 || CRYPTO_memcmp(mac
, p12
->mac
->dinfo
->digest
->data
, maclen
))
134 int PKCS12_set_mac(PKCS12
*p12
, const char *pass
, int passlen
,
135 unsigned char *salt
, int saltlen
, int iter
,
136 const EVP_MD
*md_type
)
138 unsigned char mac
[EVP_MAX_MD_SIZE
];
142 md_type
= EVP_sha1();
143 if (PKCS12_setup_mac(p12
, iter
, salt
, saltlen
, md_type
) == PKCS12_ERROR
) {
144 PKCS12err(PKCS12_F_PKCS12_SET_MAC
, PKCS12_R_MAC_SETUP_ERROR
);
147 if (!PKCS12_gen_mac(p12
, pass
, passlen
, mac
, &maclen
)) {
148 PKCS12err(PKCS12_F_PKCS12_SET_MAC
, PKCS12_R_MAC_GENERATION_ERROR
);
151 if (!(M_ASN1_OCTET_STRING_set(p12
->mac
->dinfo
->digest
, mac
, maclen
))) {
152 PKCS12err(PKCS12_F_PKCS12_SET_MAC
, PKCS12_R_MAC_STRING_SET_ERROR
);
158 /* Set up a mac structure */
159 int PKCS12_setup_mac(PKCS12
*p12
, int iter
, unsigned char *salt
, int saltlen
,
160 const EVP_MD
*md_type
)
162 if (!(p12
->mac
= PKCS12_MAC_DATA_new()))
165 if (!(p12
->mac
->iter
= M_ASN1_INTEGER_new())) {
166 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC
, ERR_R_MALLOC_FAILURE
);
169 if (!ASN1_INTEGER_set(p12
->mac
->iter
, iter
)) {
170 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC
, ERR_R_MALLOC_FAILURE
);
175 saltlen
= PKCS12_SALT_LEN
;
176 p12
->mac
->salt
->length
= saltlen
;
177 if (!(p12
->mac
->salt
->data
= OPENSSL_malloc(saltlen
))) {
178 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC
, ERR_R_MALLOC_FAILURE
);
182 if (RAND_pseudo_bytes(p12
->mac
->salt
->data
, saltlen
) < 0)
185 memcpy(p12
->mac
->salt
->data
, salt
, saltlen
);
186 p12
->mac
->dinfo
->algor
->algorithm
= OBJ_nid2obj(EVP_MD_type(md_type
));
187 if (!(p12
->mac
->dinfo
->algor
->parameter
= ASN1_TYPE_new())) {
188 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC
, ERR_R_MALLOC_FAILURE
);
191 p12
->mac
->dinfo
->algor
->parameter
->type
= V_ASN1_NULL
;