1183234Ssimon/* crypto/cms/cms_dd.c */ 2296465Sdelphij/* 3296465Sdelphij * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 4183234Ssimon * project. 5183234Ssimon */ 6183234Ssimon/* ==================================================================== 7183234Ssimon * Copyright (c) 2008 The OpenSSL Project. All rights reserved. 8183234Ssimon * 9183234Ssimon * Redistribution and use in source and binary forms, with or without 10183234Ssimon * modification, are permitted provided that the following conditions 11183234Ssimon * are met: 12183234Ssimon * 13183234Ssimon * 1. Redistributions of source code must retain the above copyright 14296465Sdelphij * notice, this list of conditions and the following disclaimer. 15183234Ssimon * 16183234Ssimon * 2. Redistributions in binary form must reproduce the above copyright 17183234Ssimon * notice, this list of conditions and the following disclaimer in 18183234Ssimon * the documentation and/or other materials provided with the 19183234Ssimon * distribution. 20183234Ssimon * 21183234Ssimon * 3. All advertising materials mentioning features or use of this 22183234Ssimon * software must display the following acknowledgment: 23183234Ssimon * "This product includes software developed by the OpenSSL Project 24183234Ssimon * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 25183234Ssimon * 26183234Ssimon * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27183234Ssimon * endorse or promote products derived from this software without 28183234Ssimon * prior written permission. For written permission, please contact 29183234Ssimon * licensing@OpenSSL.org. 30183234Ssimon * 31183234Ssimon * 5. Products derived from this software may not be called "OpenSSL" 32183234Ssimon * nor may "OpenSSL" appear in their names without prior written 33183234Ssimon * permission of the OpenSSL Project. 34183234Ssimon * 35183234Ssimon * 6. Redistributions of any form whatsoever must retain the following 36183234Ssimon * acknowledgment: 37183234Ssimon * "This product includes software developed by the OpenSSL Project 38183234Ssimon * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 39183234Ssimon * 40183234Ssimon * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41183234Ssimon * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42183234Ssimon * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43183234Ssimon * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44183234Ssimon * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45183234Ssimon * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46183234Ssimon * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47183234Ssimon * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48183234Ssimon * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49183234Ssimon * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50183234Ssimon * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51183234Ssimon * OF THE POSSIBILITY OF SUCH DAMAGE. 52183234Ssimon * ==================================================================== 53183234Ssimon */ 54183234Ssimon 55183234Ssimon#include "cryptlib.h" 56183234Ssimon#include <openssl/asn1t.h> 57183234Ssimon#include <openssl/pem.h> 58183234Ssimon#include <openssl/x509v3.h> 59183234Ssimon#include <openssl/err.h> 60183234Ssimon#include <openssl/cms.h> 61183234Ssimon#include "cms_lcl.h" 62183234Ssimon 63183234SsimonDECLARE_ASN1_ITEM(CMS_DigestedData) 64183234Ssimon 65183234Ssimon/* CMS DigestedData Utilities */ 66183234Ssimon 67183234SsimonCMS_ContentInfo *cms_DigestedData_create(const EVP_MD *md) 68296465Sdelphij{ 69296465Sdelphij CMS_ContentInfo *cms; 70296465Sdelphij CMS_DigestedData *dd; 71296465Sdelphij cms = CMS_ContentInfo_new(); 72296465Sdelphij if (!cms) 73296465Sdelphij return NULL; 74183234Ssimon 75296465Sdelphij dd = M_ASN1_new_of(CMS_DigestedData); 76183234Ssimon 77296465Sdelphij if (!dd) 78296465Sdelphij goto err; 79183234Ssimon 80296465Sdelphij cms->contentType = OBJ_nid2obj(NID_pkcs7_digest); 81296465Sdelphij cms->d.digestedData = dd; 82183234Ssimon 83296465Sdelphij dd->version = 0; 84296465Sdelphij dd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data); 85183234Ssimon 86296465Sdelphij cms_DigestAlgorithm_set(dd->digestAlgorithm, md); 87183234Ssimon 88296465Sdelphij return cms; 89183234Ssimon 90296465Sdelphij err: 91183234Ssimon 92296465Sdelphij if (cms) 93296465Sdelphij CMS_ContentInfo_free(cms); 94183234Ssimon 95296465Sdelphij return NULL; 96296465Sdelphij} 97183234Ssimon 98183234SsimonBIO *cms_DigestedData_init_bio(CMS_ContentInfo *cms) 99296465Sdelphij{ 100296465Sdelphij CMS_DigestedData *dd; 101296465Sdelphij dd = cms->d.digestedData; 102296465Sdelphij return cms_DigestAlgorithm_init_bio(dd->digestAlgorithm); 103296465Sdelphij} 104183234Ssimon 105183234Ssimonint cms_DigestedData_do_final(CMS_ContentInfo *cms, BIO *chain, int verify) 106296465Sdelphij{ 107296465Sdelphij EVP_MD_CTX mctx; 108296465Sdelphij unsigned char md[EVP_MAX_MD_SIZE]; 109296465Sdelphij unsigned int mdlen; 110296465Sdelphij int r = 0; 111296465Sdelphij CMS_DigestedData *dd; 112296465Sdelphij EVP_MD_CTX_init(&mctx); 113183234Ssimon 114296465Sdelphij dd = cms->d.digestedData; 115183234Ssimon 116296465Sdelphij if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, dd->digestAlgorithm)) 117296465Sdelphij goto err; 118183234Ssimon 119296465Sdelphij if (EVP_DigestFinal_ex(&mctx, md, &mdlen) <= 0) 120296465Sdelphij goto err; 121183234Ssimon 122296465Sdelphij if (verify) { 123296465Sdelphij if (mdlen != (unsigned int)dd->digest->length) { 124296465Sdelphij CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL, 125296465Sdelphij CMS_R_MESSAGEDIGEST_WRONG_LENGTH); 126296465Sdelphij goto err; 127296465Sdelphij } 128183234Ssimon 129296465Sdelphij if (memcmp(md, dd->digest->data, mdlen)) 130296465Sdelphij CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL, 131296465Sdelphij CMS_R_VERIFICATION_FAILURE); 132296465Sdelphij else 133296465Sdelphij r = 1; 134296465Sdelphij } else { 135296465Sdelphij if (!ASN1_STRING_set(dd->digest, md, mdlen)) 136296465Sdelphij goto err; 137296465Sdelphij r = 1; 138296465Sdelphij } 139183234Ssimon 140296465Sdelphij err: 141296465Sdelphij EVP_MD_CTX_cleanup(&mctx); 142183234Ssimon 143296465Sdelphij return r; 144183234Ssimon 145296465Sdelphij} 146