2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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).
59 #ifndef OPENSSL_NO_HMAC
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
[PKCS12_MAC_KEY_LENGTH
], *salt
;
75 salt
= p12
->mac
->salt
->data
;
76 saltlen
= p12
->mac
->salt
->length
;
77 if (!p12
->mac
->iter
) iter
= 1;
78 else iter
= ASN1_INTEGER_get (p12
->mac
->iter
);
80 EVP_get_digestbyobj (p12
->mac
->dinfo
->algor
->algorithm
))) {
81 PKCS12err(PKCS12_F_PKCS12_GEN_MAC
,PKCS12_R_UNKNOWN_DIGEST_ALGORITHM
);
84 if(!PKCS12_key_gen (pass
, passlen
, salt
, saltlen
, PKCS12_MAC_ID
, iter
,
85 PKCS12_MAC_KEY_LENGTH
, key
, md_type
)) {
86 PKCS12err(PKCS12_F_PKCS12_GEN_MAC
,PKCS12_R_KEY_GEN_ERROR
);
90 HMAC_Init_ex(&hmac
, key
, PKCS12_MAC_KEY_LENGTH
, md_type
, NULL
);
91 HMAC_Update(&hmac
, p12
->authsafes
->d
.data
->data
,
92 p12
->authsafes
->d
.data
->length
);
93 HMAC_Final(&hmac
, mac
, maclen
);
94 HMAC_CTX_cleanup(&hmac
);
99 int PKCS12_verify_mac (PKCS12
*p12
, const char *pass
, int passlen
)
101 unsigned char mac
[EVP_MAX_MD_SIZE
];
103 if(p12
->mac
== NULL
) {
104 PKCS12err(PKCS12_F_VERIFY_MAC
,PKCS12_R_MAC_ABSENT
);
107 if (!PKCS12_gen_mac (p12
, pass
, passlen
, mac
, &maclen
)) {
108 PKCS12err(PKCS12_F_VERIFY_MAC
,PKCS12_R_MAC_GENERATION_ERROR
);
111 if ((maclen
!= (unsigned int)p12
->mac
->dinfo
->digest
->length
)
112 || memcmp (mac
, p12
->mac
->dinfo
->digest
->data
, maclen
)) return 0;
118 int PKCS12_set_mac (PKCS12
*p12
, const char *pass
, int passlen
,
119 unsigned char *salt
, int saltlen
, int iter
, const EVP_MD
*md_type
)
121 unsigned char mac
[EVP_MAX_MD_SIZE
];
124 if (!md_type
) md_type
= EVP_sha1();
125 if (PKCS12_setup_mac (p12
, iter
, salt
, saltlen
, md_type
) ==
127 PKCS12err(PKCS12_F_PKCS12_SET_MAC
,PKCS12_R_MAC_SETUP_ERROR
);
130 if (!PKCS12_gen_mac (p12
, pass
, passlen
, mac
, &maclen
)) {
131 PKCS12err(PKCS12_F_PKCS12_SET_MAC
,PKCS12_R_MAC_GENERATION_ERROR
);
134 if (!(M_ASN1_OCTET_STRING_set (p12
->mac
->dinfo
->digest
, mac
, maclen
))) {
135 PKCS12err(PKCS12_F_PKCS12_SET_MAC
,PKCS12_R_MAC_STRING_SET_ERROR
);
141 /* Set up a mac structure */
142 int PKCS12_setup_mac (PKCS12
*p12
, int iter
, unsigned char *salt
, int saltlen
,
143 const EVP_MD
*md_type
)
145 if (!(p12
->mac
= PKCS12_MAC_DATA_new())) return PKCS12_ERROR
;
147 if(!(p12
->mac
->iter
= M_ASN1_INTEGER_new())) {
148 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC
, ERR_R_MALLOC_FAILURE
);
151 ASN1_INTEGER_set(p12
->mac
->iter
, iter
);
153 if (!saltlen
) saltlen
= PKCS12_SALT_LEN
;
154 p12
->mac
->salt
->length
= saltlen
;
155 if (!(p12
->mac
->salt
->data
= OPENSSL_malloc (saltlen
))) {
156 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC
, ERR_R_MALLOC_FAILURE
);
160 if (RAND_pseudo_bytes (p12
->mac
->salt
->data
, saltlen
) < 0)
163 else memcpy (p12
->mac
->salt
->data
, salt
, saltlen
);
164 p12
->mac
->dinfo
->algor
->algorithm
= OBJ_nid2obj(EVP_MD_type(md_type
));
165 if (!(p12
->mac
->dinfo
->algor
->parameter
= ASN1_TYPE_new())) {
166 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC
, ERR_R_MALLOC_FAILURE
);
169 p12
->mac
->dinfo
->algor
->parameter
->type
= V_ASN1_NULL
;