Branch data Line data Source code
1 : : /* p12_mutl.c */
2 : : /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 : : * project 1999.
4 : : */
5 : : /* ====================================================================
6 : : * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
7 : : *
8 : : * Redistribution and use in source and binary forms, with or without
9 : : * modification, are permitted provided that the following conditions
10 : : * are met:
11 : : *
12 : : * 1. Redistributions of source code must retain the above copyright
13 : : * notice, this list of conditions and the following disclaimer.
14 : : *
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
18 : : * distribution.
19 : : *
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/)"
24 : : *
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.
29 : : *
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.
33 : : *
34 : : * 6. Redistributions of any form whatsoever must retain the following
35 : : * acknowledgment:
36 : : * "This product includes software developed by the OpenSSL Project
37 : : * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 : : *
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 : : * ====================================================================
52 : : *
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).
56 : : *
57 : : */
58 : :
59 : : #ifndef OPENSSL_NO_HMAC
60 : : #include <stdio.h>
61 : : #include "cryptlib.h"
62 : : #include <openssl/hmac.h>
63 : : #include <openssl/rand.h>
64 : : #include <openssl/pkcs12.h>
65 : :
66 : : /* Generate a MAC */
67 : 0 : int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
68 : : unsigned char *mac, unsigned int *maclen)
69 : : {
70 : : const EVP_MD *md_type;
71 : : HMAC_CTX hmac;
72 : : unsigned char key[EVP_MAX_MD_SIZE], *salt;
73 : : int saltlen, iter;
74 : : int md_size;
75 : :
76 [ # # ]: 0 : if (!PKCS7_type_is_data(p12->authsafes))
77 : : {
78 : 0 : PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_CONTENT_TYPE_NOT_DATA);
79 : 0 : return 0;
80 : : }
81 : :
82 : 0 : salt = p12->mac->salt->data;
83 : 0 : saltlen = p12->mac->salt->length;
84 [ # # ]: 0 : if (!p12->mac->iter) iter = 1;
85 : 0 : else iter = ASN1_INTEGER_get (p12->mac->iter);
86 [ # # ]: 0 : if(!(md_type =
87 : 0 : EVP_get_digestbyobj (p12->mac->dinfo->algor->algorithm))) {
88 : 0 : PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
89 : 0 : return 0;
90 : : }
91 : 0 : md_size = EVP_MD_size(md_type);
92 [ # # ]: 0 : if (md_size < 0)
93 : : return 0;
94 [ # # ]: 0 : if(!PKCS12_key_gen (pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter,
95 : : md_size, key, md_type)) {
96 : 0 : PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_KEY_GEN_ERROR);
97 : 0 : return 0;
98 : : }
99 : 0 : HMAC_CTX_init(&hmac);
100 [ # # ]: 0 : if (!HMAC_Init_ex(&hmac, key, md_size, md_type, NULL)
101 [ # # ]: 0 : || !HMAC_Update(&hmac, p12->authsafes->d.data->data,
102 : 0 : p12->authsafes->d.data->length)
103 [ # # ]: 0 : || !HMAC_Final(&hmac, mac, maclen))
104 : : {
105 : 0 : HMAC_CTX_cleanup(&hmac);
106 : 0 : return 0;
107 : : }
108 : 0 : HMAC_CTX_cleanup(&hmac);
109 : 0 : return 1;
110 : : }
111 : :
112 : : /* Verify the mac */
113 : 0 : int PKCS12_verify_mac(PKCS12 *p12, const char *pass, int passlen)
114 : : {
115 : : unsigned char mac[EVP_MAX_MD_SIZE];
116 : : unsigned int maclen;
117 [ # # ]: 0 : if(p12->mac == NULL) {
118 : 0 : PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC,PKCS12_R_MAC_ABSENT);
119 : 0 : return 0;
120 : : }
121 [ # # ]: 0 : if (!PKCS12_gen_mac (p12, pass, passlen, mac, &maclen)) {
122 : 0 : PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC,PKCS12_R_MAC_GENERATION_ERROR);
123 : 0 : return 0;
124 : : }
125 [ # # ]: 0 : if ((maclen != (unsigned int)p12->mac->dinfo->digest->length)
126 [ # # ]: 0 : || memcmp (mac, p12->mac->dinfo->digest->data, maclen)) return 0;
127 : 0 : return 1;
128 : : }
129 : :
130 : : /* Set a mac */
131 : :
132 : 0 : int PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen,
133 : : unsigned char *salt, int saltlen, int iter, const EVP_MD *md_type)
134 : : {
135 : : unsigned char mac[EVP_MAX_MD_SIZE];
136 : : unsigned int maclen;
137 : :
138 [ # # ]: 0 : if (!md_type) md_type = EVP_sha1();
139 [ # # ]: 0 : if (PKCS12_setup_mac (p12, iter, salt, saltlen, md_type) ==
140 : : PKCS12_ERROR) {
141 : 0 : PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_SETUP_ERROR);
142 : 0 : return 0;
143 : : }
144 [ # # ]: 0 : if (!PKCS12_gen_mac (p12, pass, passlen, mac, &maclen)) {
145 : 0 : PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_GENERATION_ERROR);
146 : 0 : return 0;
147 : : }
148 [ # # ]: 0 : if (!(M_ASN1_OCTET_STRING_set (p12->mac->dinfo->digest, mac, maclen))) {
149 : 0 : PKCS12err(PKCS12_F_PKCS12_SET_MAC,PKCS12_R_MAC_STRING_SET_ERROR);
150 : 0 : return 0;
151 : : }
152 : : return 1;
153 : : }
154 : :
155 : : /* Set up a mac structure */
156 : 0 : int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, int saltlen,
157 : : const EVP_MD *md_type)
158 : : {
159 [ # # ]: 0 : if (!(p12->mac = PKCS12_MAC_DATA_new())) return PKCS12_ERROR;
160 [ # # ]: 0 : if (iter > 1) {
161 [ # # ]: 0 : if(!(p12->mac->iter = M_ASN1_INTEGER_new())) {
162 : 0 : PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
163 : 0 : return 0;
164 : : }
165 [ # # ]: 0 : if (!ASN1_INTEGER_set(p12->mac->iter, iter)) {
166 : 0 : PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
167 : 0 : return 0;
168 : : }
169 : : }
170 [ # # ]: 0 : if (!saltlen) saltlen = PKCS12_SALT_LEN;
171 : 0 : p12->mac->salt->length = saltlen;
172 [ # # ]: 0 : if (!(p12->mac->salt->data = OPENSSL_malloc (saltlen))) {
173 : 0 : PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
174 : 0 : return 0;
175 : : }
176 [ # # ]: 0 : if (!salt) {
177 [ # # ]: 0 : if (RAND_pseudo_bytes (p12->mac->salt->data, saltlen) < 0)
178 : : return 0;
179 : : }
180 : 0 : else memcpy (p12->mac->salt->data, salt, saltlen);
181 : 0 : p12->mac->dinfo->algor->algorithm = OBJ_nid2obj(EVP_MD_type(md_type));
182 [ # # ]: 0 : if (!(p12->mac->dinfo->algor->parameter = ASN1_TYPE_new())) {
183 : 0 : PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
184 : 0 : return 0;
185 : : }
186 : 0 : p12->mac->dinfo->algor->parameter->type = V_ASN1_NULL;
187 : :
188 : 0 : return 1;
189 : : }
190 : : #endif
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