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/hmac.h>
64 # include <openssl/rand.h>
65 # include <openssl/pkcs12.h>
68 int PKCS12_gen_mac(PKCS12
*p12
, const char *pass
, int passlen
,
69 unsigned char *mac
, unsigned int *maclen
)
71 const EVP_MD
*md_type
;
73 unsigned char key
[EVP_MAX_MD_SIZE
], *salt
;
77 if (!PKCS7_type_is_data(p12
->authsafes
)) {
78 PKCS12err(PKCS12_F_PKCS12_GEN_MAC
, PKCS12_R_CONTENT_TYPE_NOT_DATA
);
82 salt
= p12
->mac
->salt
->data
;
83 saltlen
= p12
->mac
->salt
->length
;
87 iter
= ASN1_INTEGER_get(p12
->mac
->iter
);
88 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 (!(M_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()))
164 if (!(p12
->mac
->iter
= M_ASN1_INTEGER_new())) {
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
))) {
177 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC
, ERR_R_MALLOC_FAILURE
);
181 if (RAND_pseudo_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())) {
187 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC
, ERR_R_MALLOC_FAILURE
);
190 p12
->mac
->dinfo
->algor
->parameter
->type
= V_ASN1_NULL
;