149 lines
4.2 KiB
C
149 lines
4.2 KiB
C
/* crypto/cms/cms_dd.c */
|
|
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
|
|
* project.
|
|
*/
|
|
/* ====================================================================
|
|
* Copyright (c) 2008 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3. All advertising materials mentioning features or use of this
|
|
* software must display the following acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* licensing@OpenSSL.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
* ====================================================================
|
|
*/
|
|
|
|
#include "cryptlib.h"
|
|
#include <openssl/asn1t.h>
|
|
#include <openssl/pem.h>
|
|
#include <openssl/x509v3.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/cms.h>
|
|
#include "cms_lcl.h"
|
|
|
|
DECLARE_ASN1_ITEM(CMS_DigestedData)
|
|
|
|
/* CMS DigestedData Utilities */
|
|
|
|
CMS_ContentInfo *cms_DigestedData_create(const EVP_MD *md)
|
|
{
|
|
CMS_ContentInfo *cms;
|
|
CMS_DigestedData *dd;
|
|
cms = CMS_ContentInfo_new();
|
|
if (!cms)
|
|
return NULL;
|
|
|
|
dd = M_ASN1_new_of(CMS_DigestedData);
|
|
|
|
if (!dd)
|
|
goto err;
|
|
|
|
cms->contentType = OBJ_nid2obj(NID_pkcs7_digest);
|
|
cms->d.digestedData = dd;
|
|
|
|
dd->version = 0;
|
|
dd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
|
|
|
|
cms_DigestAlgorithm_set(dd->digestAlgorithm, md);
|
|
|
|
return cms;
|
|
|
|
err:
|
|
|
|
if (cms)
|
|
CMS_ContentInfo_free(cms);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
BIO *cms_DigestedData_init_bio(CMS_ContentInfo *cms)
|
|
{
|
|
CMS_DigestedData *dd;
|
|
dd = cms->d.digestedData;
|
|
return cms_DigestAlgorithm_init_bio(dd->digestAlgorithm);
|
|
}
|
|
|
|
int cms_DigestedData_do_final(CMS_ContentInfo *cms, BIO *chain, int verify)
|
|
{
|
|
EVP_MD_CTX mctx;
|
|
unsigned char md[EVP_MAX_MD_SIZE];
|
|
unsigned int mdlen;
|
|
int r = 0;
|
|
CMS_DigestedData *dd;
|
|
EVP_MD_CTX_init(&mctx);
|
|
|
|
dd = cms->d.digestedData;
|
|
|
|
if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, dd->digestAlgorithm))
|
|
goto err;
|
|
|
|
if (EVP_DigestFinal_ex(&mctx, md, &mdlen) <= 0)
|
|
goto err;
|
|
|
|
if (verify)
|
|
{
|
|
if (mdlen != (unsigned int)dd->digest->length)
|
|
{
|
|
CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL,
|
|
CMS_R_MESSAGEDIGEST_WRONG_LENGTH);
|
|
goto err;
|
|
}
|
|
|
|
if (memcmp(md, dd->digest->data, mdlen))
|
|
CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL,
|
|
CMS_R_VERIFICATION_FAILURE);
|
|
else
|
|
r = 1;
|
|
}
|
|
else
|
|
{
|
|
if (!ASN1_STRING_set(dd->digest, md, mdlen))
|
|
goto err;
|
|
r = 1;
|
|
}
|
|
|
|
err:
|
|
EVP_MD_CTX_cleanup(&mctx);
|
|
|
|
return r;
|
|
|
|
}
|