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0f113f3e MC |
1 | /* |
2 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
8931b30d DSH |
3 | * project. |
4 | */ | |
5 | /* ==================================================================== | |
6 | * Copyright (c) 2008 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 | |
0f113f3e | 13 | * notice, this list of conditions and the following disclaimer. |
8931b30d DSH |
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 | ||
b39fc560 | 54 | #include "internal/cryptlib.h" |
8931b30d DSH |
55 | #include <openssl/asn1t.h> |
56 | #include <openssl/pem.h> | |
57 | #include <openssl/x509v3.h> | |
58 | #include <openssl/err.h> | |
59 | #include <openssl/cms.h> | |
60 | #include "cms_lcl.h" | |
8931b30d | 61 | |
8931b30d DSH |
62 | /* CMS DigestedData Utilities */ |
63 | ||
64 | CMS_ContentInfo *cms_DigestedData_create(const EVP_MD *md) | |
0f113f3e MC |
65 | { |
66 | CMS_ContentInfo *cms; | |
67 | CMS_DigestedData *dd; | |
68 | cms = CMS_ContentInfo_new(); | |
90945fa3 | 69 | if (cms == NULL) |
0f113f3e | 70 | return NULL; |
8931b30d | 71 | |
0f113f3e | 72 | dd = M_ASN1_new_of(CMS_DigestedData); |
8931b30d | 73 | |
90945fa3 | 74 | if (dd == NULL) |
0f113f3e | 75 | goto err; |
8931b30d | 76 | |
0f113f3e MC |
77 | cms->contentType = OBJ_nid2obj(NID_pkcs7_digest); |
78 | cms->d.digestedData = dd; | |
8931b30d | 79 | |
0f113f3e MC |
80 | dd->version = 0; |
81 | dd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data); | |
8931b30d | 82 | |
0f113f3e | 83 | X509_ALGOR_set_md(dd->digestAlgorithm, md); |
8931b30d | 84 | |
0f113f3e | 85 | return cms; |
8931b30d | 86 | |
0f113f3e | 87 | err: |
25aaa98a | 88 | CMS_ContentInfo_free(cms); |
0f113f3e MC |
89 | return NULL; |
90 | } | |
8931b30d DSH |
91 | |
92 | BIO *cms_DigestedData_init_bio(CMS_ContentInfo *cms) | |
0f113f3e MC |
93 | { |
94 | CMS_DigestedData *dd; | |
95 | dd = cms->d.digestedData; | |
96 | return cms_DigestAlgorithm_init_bio(dd->digestAlgorithm); | |
97 | } | |
8931b30d DSH |
98 | |
99 | int cms_DigestedData_do_final(CMS_ContentInfo *cms, BIO *chain, int verify) | |
0f113f3e | 100 | { |
bfb0641f | 101 | EVP_MD_CTX *mctx = EVP_MD_CTX_new(); |
0f113f3e MC |
102 | unsigned char md[EVP_MAX_MD_SIZE]; |
103 | unsigned int mdlen; | |
104 | int r = 0; | |
105 | CMS_DigestedData *dd; | |
6e59a892 RL |
106 | |
107 | if (mctx == NULL) { | |
108 | CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL, ERR_R_MALLOC_FAILURE); | |
109 | goto err; | |
110 | } | |
0f113f3e MC |
111 | |
112 | dd = cms->d.digestedData; | |
113 | ||
6e59a892 | 114 | if (!cms_DigestAlgorithm_find_ctx(mctx, chain, dd->digestAlgorithm)) |
0f113f3e MC |
115 | goto err; |
116 | ||
6e59a892 | 117 | if (EVP_DigestFinal_ex(mctx, md, &mdlen) <= 0) |
0f113f3e MC |
118 | goto err; |
119 | ||
120 | if (verify) { | |
121 | if (mdlen != (unsigned int)dd->digest->length) { | |
122 | CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL, | |
123 | CMS_R_MESSAGEDIGEST_WRONG_LENGTH); | |
124 | goto err; | |
125 | } | |
126 | ||
127 | if (memcmp(md, dd->digest->data, mdlen)) | |
128 | CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL, | |
129 | CMS_R_VERIFICATION_FAILURE); | |
130 | else | |
131 | r = 1; | |
132 | } else { | |
133 | if (!ASN1_STRING_set(dd->digest, md, mdlen)) | |
134 | goto err; | |
135 | r = 1; | |
136 | } | |
137 | ||
138 | err: | |
bfb0641f | 139 | EVP_MD_CTX_free(mctx); |
0f113f3e MC |
140 | |
141 | return r; | |
142 | ||
143 | } |