]>
Commit | Line | Data |
---|---|---|
8d8c7266 | 1 | /* p12_mutl.c */ |
0f113f3e MC |
2 | /* |
3 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project | |
4 | * 1999. | |
8d8c7266 DSH |
5 | */ |
6 | /* ==================================================================== | |
7 | * Copyright (c) 1999 The OpenSSL Project. All rights reserved. | |
8 | * | |
9 | * Redistribution and use in source and binary forms, with or without | |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * | |
13 | * 1. Redistributions of source code must retain the above copyright | |
0f113f3e | 14 | * notice, this list of conditions and the following disclaimer. |
8d8c7266 DSH |
15 | * |
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 | |
19 | * distribution. | |
20 | * | |
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/)" | |
25 | * | |
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. | |
30 | * | |
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. | |
34 | * | |
35 | * 6. Redistributions of any form whatsoever must retain the following | |
36 | * acknowledgment: | |
37 | * "This product includes software developed by the OpenSSL Project | |
38 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
39 | * | |
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 | * ==================================================================== | |
53 | * | |
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). | |
57 | * | |
58 | */ | |
59 | ||
0f113f3e MC |
60 | # include <stdio.h> |
61 | # include "cryptlib.h" | |
62 | # include <openssl/hmac.h> | |
63 | # include <openssl/rand.h> | |
64 | # include <openssl/pkcs12.h> | |
8d8c7266 DSH |
65 | |
66 | /* Generate a MAC */ | |
8afca8d9 | 67 | int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen, |
0f113f3e | 68 | unsigned char *mac, unsigned int *maclen) |
8d8c7266 | 69 | { |
0f113f3e MC |
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; | |
dbad1690 | 75 | |
0f113f3e MC |
76 | if (!PKCS7_type_is_data(p12->authsafes)) { |
77 | PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_CONTENT_TYPE_NOT_DATA); | |
78 | return 0; | |
79 | } | |
1c2f1fe5 | 80 | |
0f113f3e MC |
81 | salt = p12->mac->salt->data; |
82 | saltlen = p12->mac->salt->length; | |
83 | if (!p12->mac->iter) | |
84 | iter = 1; | |
85 | else | |
86 | iter = ASN1_INTEGER_get(p12->mac->iter); | |
87 | if (!(md_type = EVP_get_digestbyobj(p12->mac->dinfo->algor->algorithm))) { | |
88 | PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM); | |
89 | return 0; | |
90 | } | |
91 | md_size = EVP_MD_size(md_type); | |
92 | if (md_size < 0) | |
93 | return 0; | |
94 | if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter, | |
95 | md_size, key, md_type)) { | |
96 | PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR); | |
97 | return 0; | |
98 | } | |
99 | HMAC_CTX_init(&hmac); | |
100 | if (!HMAC_Init_ex(&hmac, key, md_size, md_type, NULL) | |
101 | || !HMAC_Update(&hmac, p12->authsafes->d.data->data, | |
102 | p12->authsafes->d.data->length) | |
103 | || !HMAC_Final(&hmac, mac, maclen)) { | |
104 | HMAC_CTX_cleanup(&hmac); | |
105 | return 0; | |
106 | } | |
107 | HMAC_CTX_cleanup(&hmac); | |
108 | return 1; | |
8d8c7266 DSH |
109 | } |
110 | ||
111 | /* Verify the mac */ | |
8afca8d9 | 112 | int PKCS12_verify_mac(PKCS12 *p12, const char *pass, int passlen) |
8d8c7266 | 113 | { |
0f113f3e MC |
114 | unsigned char mac[EVP_MAX_MD_SIZE]; |
115 | unsigned int maclen; | |
116 | if (p12->mac == NULL) { | |
117 | PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_ABSENT); | |
118 | return 0; | |
119 | } | |
120 | if (!PKCS12_gen_mac(p12, pass, passlen, mac, &maclen)) { | |
121 | PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_GENERATION_ERROR); | |
122 | return 0; | |
123 | } | |
124 | if ((maclen != (unsigned int)p12->mac->dinfo->digest->length) | |
125 | || memcmp(mac, p12->mac->dinfo->digest->data, maclen)) | |
126 | return 0; | |
127 | return 1; | |
8d8c7266 DSH |
128 | } |
129 | ||
130 | /* Set a mac */ | |
131 | ||
8afca8d9 | 132 | int PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen, |
0f113f3e MC |
133 | unsigned char *salt, int saltlen, int iter, |
134 | const EVP_MD *md_type) | |
8d8c7266 | 135 | { |
0f113f3e MC |
136 | unsigned char mac[EVP_MAX_MD_SIZE]; |
137 | unsigned int maclen; | |
61f5b6f3 | 138 | |
0f113f3e MC |
139 | if (!md_type) |
140 | md_type = EVP_sha1(); | |
141 | if (PKCS12_setup_mac(p12, iter, salt, saltlen, md_type) == PKCS12_ERROR) { | |
142 | PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_SETUP_ERROR); | |
143 | return 0; | |
144 | } | |
145 | if (!PKCS12_gen_mac(p12, pass, passlen, mac, &maclen)) { | |
146 | PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_GENERATION_ERROR); | |
147 | return 0; | |
148 | } | |
f422a514 | 149 | if (!(ASN1_OCTET_STRING_set(p12->mac->dinfo->digest, mac, maclen))) { |
0f113f3e MC |
150 | PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_STRING_SET_ERROR); |
151 | return 0; | |
152 | } | |
153 | return 1; | |
8d8c7266 DSH |
154 | } |
155 | ||
156 | /* Set up a mac structure */ | |
8afca8d9 | 157 | int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, int saltlen, |
0f113f3e | 158 | const EVP_MD *md_type) |
8d8c7266 | 159 | { |
0f113f3e MC |
160 | if (!(p12->mac = PKCS12_MAC_DATA_new())) |
161 | return PKCS12_ERROR; | |
162 | if (iter > 1) { | |
f422a514 | 163 | if (!(p12->mac->iter = ASN1_INTEGER_new())) { |
0f113f3e MC |
164 | PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); |
165 | return 0; | |
166 | } | |
167 | if (!ASN1_INTEGER_set(p12->mac->iter, iter)) { | |
168 | PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); | |
169 | return 0; | |
170 | } | |
171 | } | |
172 | if (!saltlen) | |
173 | saltlen = PKCS12_SALT_LEN; | |
174 | p12->mac->salt->length = saltlen; | |
175 | if (!(p12->mac->salt->data = OPENSSL_malloc(saltlen))) { | |
176 | PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); | |
177 | return 0; | |
178 | } | |
179 | if (!salt) { | |
180 | if (RAND_pseudo_bytes(p12->mac->salt->data, saltlen) < 0) | |
181 | return 0; | |
182 | } else | |
183 | memcpy(p12->mac->salt->data, salt, saltlen); | |
184 | p12->mac->dinfo->algor->algorithm = OBJ_nid2obj(EVP_MD_type(md_type)); | |
185 | if (!(p12->mac->dinfo->algor->parameter = ASN1_TYPE_new())) { | |
186 | PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE); | |
187 | return 0; | |
188 | } | |
189 | p12->mac->dinfo->algor->parameter->type = V_ASN1_NULL; | |
190 | ||
191 | return 1; | |
8d8c7266 | 192 | } |