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-rw-r--r--src/lib/libcrypto/asn1/a_verify.c173
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diff --git a/src/lib/libcrypto/asn1/a_verify.c b/src/lib/libcrypto/asn1/a_verify.c
deleted file mode 100644
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1/* $OpenBSD: a_verify.c,v 1.22 2015/09/10 15:56:24 jsing Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <sys/types.h>
60
61#include <stdio.h>
62#include <string.h>
63#include <time.h>
64
65#include <openssl/bn.h>
66#include <openssl/buffer.h>
67#include <openssl/err.h>
68#include <openssl/evp.h>
69#include <openssl/objects.h>
70#include <openssl/x509.h>
71
72#include "asn1_locl.h"
73
74int
75ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *a,
76 ASN1_BIT_STRING *signature, void *asn, EVP_PKEY *pkey)
77{
78 EVP_MD_CTX ctx;
79 unsigned char *buf_in = NULL;
80 int ret = -1, inl;
81
82 int mdnid, pknid;
83
84 if (!pkey) {
85 ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_PASSED_NULL_PARAMETER);
86 return -1;
87 }
88
89 if (signature->type == V_ASN1_BIT_STRING && signature->flags & 0x7)
90 {
91 ASN1err(ASN1_F_ASN1_VERIFY,
92 ASN1_R_INVALID_BIT_STRING_BITS_LEFT);
93 return -1;
94 }
95
96 EVP_MD_CTX_init(&ctx);
97
98 /* Convert signature OID into digest and public key OIDs */
99 if (!OBJ_find_sigid_algs(OBJ_obj2nid(a->algorithm), &mdnid, &pknid)) {
100 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,
101 ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM);
102 goto err;
103 }
104 if (mdnid == NID_undef) {
105 if (!pkey->ameth || !pkey->ameth->item_verify) {
106 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,
107 ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM);
108 goto err;
109 }
110 ret = pkey->ameth->item_verify(&ctx, it, asn, a,
111 signature, pkey);
112 /* Return value of 2 means carry on, anything else means we
113 * exit straight away: either a fatal error of the underlying
114 * verification routine handles all verification.
115 */
116 if (ret != 2)
117 goto err;
118 ret = -1;
119 } else {
120 const EVP_MD *type;
121 type = EVP_get_digestbynid(mdnid);
122 if (type == NULL) {
123 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,
124 ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);
125 goto err;
126 }
127
128 /* Check public key OID matches public key type */
129 if (EVP_PKEY_type(pknid) != pkey->ameth->pkey_id) {
130 ASN1err(ASN1_F_ASN1_ITEM_VERIFY,
131 ASN1_R_WRONG_PUBLIC_KEY_TYPE);
132 goto err;
133 }
134
135 if (!EVP_DigestVerifyInit(&ctx, NULL, type, NULL, pkey)) {
136 ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_EVP_LIB);
137 ret = 0;
138 goto err;
139 }
140
141 }
142
143 inl = ASN1_item_i2d(asn, &buf_in, it);
144
145 if (buf_in == NULL) {
146 ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_MALLOC_FAILURE);
147 goto err;
148 }
149
150 if (!EVP_DigestVerifyUpdate(&ctx, buf_in, inl)) {
151 ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_EVP_LIB);
152 ret = 0;
153 goto err;
154 }
155
156 explicit_bzero(buf_in, (unsigned int)inl);
157 free(buf_in);
158
159 if (EVP_DigestVerifyFinal(&ctx, signature->data,
160 (size_t)signature->length) <= 0) {
161 ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_EVP_LIB);
162 ret = 0;
163 goto err;
164 }
165 /* we don't need to zero the 'ctx' because we just checked
166 * public information */
167 /* memset(&ctx,0,sizeof(ctx)); */
168 ret = 1;
169
170err:
171 EVP_MD_CTX_cleanup(&ctx);
172 return (ret);
173}
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