1 /* crypto/cms/cms_dd.c */
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
6 /* ====================================================================
7 * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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
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52 * ====================================================================
55 #include "internal/cryptlib.h"
56 #include <openssl/asn1t.h>
57 #include <openssl/pem.h>
58 #include <openssl/x509v3.h>
59 #include <openssl/err.h>
60 #include <openssl/cms.h>
63 /* CMS DigestedData Utilities */
65 CMS_ContentInfo *cms_DigestedData_create(const EVP_MD *md)
69 cms = CMS_ContentInfo_new();
73 dd = M_ASN1_new_of(CMS_DigestedData);
78 cms->contentType = OBJ_nid2obj(NID_pkcs7_digest);
79 cms->d.digestedData = dd;
82 dd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
84 X509_ALGOR_set_md(dd->digestAlgorithm, md);
89 CMS_ContentInfo_free(cms);
93 BIO *cms_DigestedData_init_bio(CMS_ContentInfo *cms)
96 dd = cms->d.digestedData;
97 return cms_DigestAlgorithm_init_bio(dd->digestAlgorithm);
100 int cms_DigestedData_do_final(CMS_ContentInfo *cms, BIO *chain, int verify)
102 EVP_MD_CTX *mctx = EVP_MD_CTX_create();
103 unsigned char md[EVP_MAX_MD_SIZE];
106 CMS_DigestedData *dd;
109 CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL, ERR_R_MALLOC_FAILURE);
113 dd = cms->d.digestedData;
115 if (!cms_DigestAlgorithm_find_ctx(mctx, chain, dd->digestAlgorithm))
118 if (EVP_DigestFinal_ex(mctx, md, &mdlen) <= 0)
122 if (mdlen != (unsigned int)dd->digest->length) {
123 CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL,
124 CMS_R_MESSAGEDIGEST_WRONG_LENGTH);
128 if (memcmp(md, dd->digest->data, mdlen))
129 CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL,
130 CMS_R_VERIFICATION_FAILURE);
134 if (!ASN1_STRING_set(dd->digest, md, mdlen))
140 EVP_MD_CTX_destroy(mctx);