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Commit | Line | Data |
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0f113f3e | 1 | /* |
b1322259 | 2 | * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved. |
8931b30d | 3 | * |
08ddd302 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
b1322259 RS |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8931b30d DSH |
8 | */ |
9 | ||
b39fc560 | 10 | #include "internal/cryptlib.h" |
8931b30d DSH |
11 | #include <openssl/asn1t.h> |
12 | #include <openssl/pem.h> | |
13 | #include <openssl/x509v3.h> | |
14 | #include <openssl/err.h> | |
15 | #include <openssl/cms.h> | |
706457b7 | 16 | #include "cms_local.h" |
8931b30d | 17 | |
8931b30d DSH |
18 | /* CMS DigestedData Utilities */ |
19 | ||
c1669f41 | 20 | CMS_ContentInfo *cms_DigestedData_create(const EVP_MD *md, |
b4250010 DMSP |
21 | OSSL_LIB_CTX *libctx, |
22 | const char *propq) | |
0f113f3e MC |
23 | { |
24 | CMS_ContentInfo *cms; | |
25 | CMS_DigestedData *dd; | |
c1669f41 | 26 | |
d8652be0 | 27 | cms = CMS_ContentInfo_new_ex(libctx, propq); |
90945fa3 | 28 | if (cms == NULL) |
0f113f3e | 29 | return NULL; |
8931b30d | 30 | |
0f113f3e | 31 | dd = M_ASN1_new_of(CMS_DigestedData); |
8931b30d | 32 | |
90945fa3 | 33 | if (dd == NULL) |
0f113f3e | 34 | goto err; |
8931b30d | 35 | |
0f113f3e MC |
36 | cms->contentType = OBJ_nid2obj(NID_pkcs7_digest); |
37 | cms->d.digestedData = dd; | |
8931b30d | 38 | |
0f113f3e MC |
39 | dd->version = 0; |
40 | dd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data); | |
8931b30d | 41 | |
0f113f3e | 42 | X509_ALGOR_set_md(dd->digestAlgorithm, md); |
8931b30d | 43 | |
0f113f3e | 44 | return cms; |
8931b30d | 45 | |
0f113f3e | 46 | err: |
25aaa98a | 47 | CMS_ContentInfo_free(cms); |
0f113f3e MC |
48 | return NULL; |
49 | } | |
8931b30d | 50 | |
9fdcc21f | 51 | BIO *cms_DigestedData_init_bio(const CMS_ContentInfo *cms) |
0f113f3e | 52 | { |
c1669f41 SL |
53 | CMS_DigestedData *dd = cms->d.digestedData; |
54 | ||
55 | return cms_DigestAlgorithm_init_bio(dd->digestAlgorithm, cms_get0_cmsctx(cms)); | |
0f113f3e | 56 | } |
8931b30d | 57 | |
9fdcc21f | 58 | int cms_DigestedData_do_final(const CMS_ContentInfo *cms, BIO *chain, int verify) |
0f113f3e | 59 | { |
bfb0641f | 60 | EVP_MD_CTX *mctx = EVP_MD_CTX_new(); |
0f113f3e MC |
61 | unsigned char md[EVP_MAX_MD_SIZE]; |
62 | unsigned int mdlen; | |
63 | int r = 0; | |
64 | CMS_DigestedData *dd; | |
6e59a892 RL |
65 | |
66 | if (mctx == NULL) { | |
67 | CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL, ERR_R_MALLOC_FAILURE); | |
68 | goto err; | |
69 | } | |
0f113f3e MC |
70 | |
71 | dd = cms->d.digestedData; | |
72 | ||
6e59a892 | 73 | if (!cms_DigestAlgorithm_find_ctx(mctx, chain, dd->digestAlgorithm)) |
0f113f3e MC |
74 | goto err; |
75 | ||
6e59a892 | 76 | if (EVP_DigestFinal_ex(mctx, md, &mdlen) <= 0) |
0f113f3e MC |
77 | goto err; |
78 | ||
79 | if (verify) { | |
80 | if (mdlen != (unsigned int)dd->digest->length) { | |
81 | CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL, | |
82 | CMS_R_MESSAGEDIGEST_WRONG_LENGTH); | |
83 | goto err; | |
84 | } | |
85 | ||
86 | if (memcmp(md, dd->digest->data, mdlen)) | |
87 | CMSerr(CMS_F_CMS_DIGESTEDDATA_DO_FINAL, | |
88 | CMS_R_VERIFICATION_FAILURE); | |
89 | else | |
90 | r = 1; | |
91 | } else { | |
92 | if (!ASN1_STRING_set(dd->digest, md, mdlen)) | |
93 | goto err; | |
94 | r = 1; | |
95 | } | |
96 | ||
97 | err: | |
bfb0641f | 98 | EVP_MD_CTX_free(mctx); |
0f113f3e MC |
99 | |
100 | return r; | |
101 | ||
102 | } |