1 /* $OpenBSD: p12_mutl.c,v 1.23 2017/01/29 17:49:23 beck Exp $ */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
63 #include <openssl/opensslconf.h>
65 #ifndef OPENSSL_NO_HMAC
67 #include <openssl/err.h>
68 #include <openssl/hmac.h>
69 #include <openssl/pkcs12.h>
73 PKCS12_gen_mac(PKCS12
*p12
, const char *pass
, int passlen
,
74 unsigned char *mac
, unsigned int *maclen
)
76 const EVP_MD
*md_type
;
78 unsigned char key
[EVP_MAX_MD_SIZE
], *salt
;
82 if (!PKCS7_type_is_data(p12
->authsafes
)) {
83 PKCS12error(PKCS12_R_CONTENT_TYPE_NOT_DATA
);
87 salt
= p12
->mac
->salt
->data
;
88 saltlen
= p12
->mac
->salt
->length
;
91 else if ((iter
= ASN1_INTEGER_get(p12
->mac
->iter
)) <= 0) {
92 PKCS12error(PKCS12_R_DECODE_ERROR
);
95 if (!(md_type
= EVP_get_digestbyobj(
96 p12
->mac
->dinfo
->algor
->algorithm
))) {
97 PKCS12error(PKCS12_R_UNKNOWN_DIGEST_ALGORITHM
);
100 md_size
= EVP_MD_size(md_type
);
103 if (!PKCS12_key_gen(pass
, passlen
, salt
, saltlen
, PKCS12_MAC_ID
, iter
,
104 md_size
, key
, md_type
)) {
105 PKCS12error(PKCS12_R_KEY_GEN_ERROR
);
108 HMAC_CTX_init(&hmac
);
109 if (!HMAC_Init_ex(&hmac
, key
, md_size
, md_type
, NULL
) ||
110 !HMAC_Update(&hmac
, p12
->authsafes
->d
.data
->data
,
111 p12
->authsafes
->d
.data
->length
) ||
112 !HMAC_Final(&hmac
, mac
, maclen
)) {
113 HMAC_CTX_cleanup(&hmac
);
116 HMAC_CTX_cleanup(&hmac
);
122 PKCS12_verify_mac(PKCS12
*p12
, const char *pass
, int passlen
)
124 unsigned char mac
[EVP_MAX_MD_SIZE
];
127 if (p12
->mac
== NULL
) {
128 PKCS12error(PKCS12_R_MAC_ABSENT
);
131 if (!PKCS12_gen_mac(p12
, pass
, passlen
, mac
, &maclen
)) {
132 PKCS12error(PKCS12_R_MAC_GENERATION_ERROR
);
135 if ((maclen
!= (unsigned int)p12
->mac
->dinfo
->digest
->length
) ||
136 memcmp(mac
, p12
->mac
->dinfo
->digest
->data
, maclen
))
144 PKCS12_set_mac(PKCS12
*p12
, const char *pass
, int passlen
, unsigned char *salt
,
145 int saltlen
, int iter
, const EVP_MD
*md_type
)
147 unsigned char mac
[EVP_MAX_MD_SIZE
];
151 md_type
= EVP_sha1();
152 if (PKCS12_setup_mac(p12
, iter
, salt
, saltlen
, md_type
) ==
154 PKCS12error(PKCS12_R_MAC_SETUP_ERROR
);
157 if (!PKCS12_gen_mac(p12
, pass
, passlen
, mac
, &maclen
)) {
158 PKCS12error(PKCS12_R_MAC_GENERATION_ERROR
);
161 if (!(ASN1_STRING_set(p12
->mac
->dinfo
->digest
, mac
, maclen
))) {
162 PKCS12error(PKCS12_R_MAC_STRING_SET_ERROR
);
168 /* Set up a mac structure */
170 PKCS12_setup_mac(PKCS12
*p12
, int iter
, unsigned char *salt
, int saltlen
,
171 const EVP_MD
*md_type
)
173 if (!(p12
->mac
= PKCS12_MAC_DATA_new()))
176 if (!(p12
->mac
->iter
= ASN1_INTEGER_new())) {
177 PKCS12error(ERR_R_MALLOC_FAILURE
);
180 if (!ASN1_INTEGER_set(p12
->mac
->iter
, iter
)) {
181 PKCS12error(ERR_R_MALLOC_FAILURE
);
186 saltlen
= PKCS12_SALT_LEN
;
187 if (!(p12
->mac
->salt
->data
= malloc(saltlen
))) {
188 PKCS12error(ERR_R_MALLOC_FAILURE
);
191 p12
->mac
->salt
->length
= saltlen
;
193 arc4random_buf(p12
->mac
->salt
->data
, saltlen
);
195 memcpy (p12
->mac
->salt
->data
, salt
, saltlen
);
196 p12
->mac
->dinfo
->algor
->algorithm
= OBJ_nid2obj(EVP_MD_type(md_type
));
197 if (!(p12
->mac
->dinfo
->algor
->parameter
= ASN1_TYPE_new())) {
198 PKCS12error(ERR_R_MALLOC_FAILURE
);
201 p12
->mac
->dinfo
->algor
->parameter
->type
= V_ASN1_NULL
;