Branch data Line data Source code
1 : : /* crypto/cms/cms_dd.c */
2 : : /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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
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 : :
54 : : #include "cryptlib.h"
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"
61 : :
62 : : DECLARE_ASN1_ITEM(CMS_DigestedData)
63 : :
64 : : /* CMS DigestedData Utilities */
65 : :
66 : 0 : CMS_ContentInfo *cms_DigestedData_create(const EVP_MD *md)
67 : : {
68 : : CMS_ContentInfo *cms;
69 : : CMS_DigestedData *dd;
70 : 0 : cms = CMS_ContentInfo_new();
71 [ # # ]: 0 : if (!cms)
72 : : return NULL;
73 : :
74 : 0 : dd = M_ASN1_new_of(CMS_DigestedData);
75 : :
76 [ # # ]: 0 : if (!dd)
77 : : goto err;
78 : :
79 : 0 : cms->contentType = OBJ_nid2obj(NID_pkcs7_digest);
80 : 0 : cms->d.digestedData = dd;
81 : :
82 : 0 : dd->version = 0;
83 : 0 : dd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
84 : :
85 : 0 : X509_ALGOR_set_md(dd->digestAlgorithm, md);
86 : :
87 : 0 : return cms;
88 : :
89 : : err:
90 : :
91 [ # # ]: 0 : if (cms)
92 : 0 : CMS_ContentInfo_free(cms);
93 : :
94 : : return NULL;
95 : : }
96 : :
97 : 0 : BIO *cms_DigestedData_init_bio(CMS_ContentInfo *cms)
98 : : {
99 : : CMS_DigestedData *dd;
100 : 0 : dd = cms->d.digestedData;
101 : 0 : return cms_DigestAlgorithm_init_bio(dd->digestAlgorithm);
102 : : }
103 : :
104 : 0 : int cms_DigestedData_do_final(CMS_ContentInfo *cms, BIO *chain, int verify)
105 : : {
106 : : EVP_MD_CTX mctx;
107 : : unsigned char md[EVP_MAX_MD_SIZE];
108 : : unsigned int mdlen;
109 : 0 : int r = 0;
110 : : CMS_DigestedData *dd;
111 : 0 : EVP_MD_CTX_init(&mctx);
112 : :
113 : 0 : dd = cms->d.digestedData;
114 : :
115 [ # # ]: 0 : if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, dd->digestAlgorithm))
116 : : goto err;
117 : :
118 [ # # ]: 0 : if (EVP_DigestFinal_ex(&mctx, md, &mdlen) <= 0)
119 : : goto err;
120 : :
121 [ # # ]: 0 : if (verify)
122 : : {
123 [ # # ]: 0 : if (mdlen != (unsigned int)dd->digest->length)
124 : : {
125 : 0 : CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL,
126 : : CMS_R_MESSAGEDIGEST_WRONG_LENGTH);
127 : 0 : goto err;
128 : : }
129 : :
130 [ # # ]: 0 : if (memcmp(md, dd->digest->data, mdlen))
131 : 0 : CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL,
132 : : CMS_R_VERIFICATION_FAILURE);
133 : : else
134 : : r = 1;
135 : : }
136 : : else
137 : : {
138 [ # # ]: 0 : if (!ASN1_STRING_set(dd->digest, md, mdlen))
139 : : goto err;
140 : 0 : r = 1;
141 : : }
142 : :
143 : : err:
144 : 0 : EVP_MD_CTX_cleanup(&mctx);
145 : :
146 : 0 : return r;
147 : :
148 : : }
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