crypto/asn1/a_verify.c

/* crypto/asn1/a_verify.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * 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 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 acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS 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 AUTHOR OR 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.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include <time.h>

#include "cryptlib.h"

#ifndef NO_SYS_TYPES_H
# include <sys/types.h>
#endif

#include <openssl/bn.h>
#include <openssl/x509.h>
#include <openssl/objects.h>
#include <openssl/buffer.h>
#include <openssl/evp.h>

#ifndef NO_ASN1_OLD

int ASN1_verify(i2d_of_void *i2d, X509_ALGOR *a, ASN1_BIT_STRING *signature,
                char *data, EVP_PKEY *pkey)
        {
        EVP_MD_CTX ctx;
        const EVP_MD *type;
        unsigned char *p,*buf_in=NULL;
        int ret= -1,i,inl;

        EVP_MD_CTX_init(&ctx);
        i=OBJ_obj2nid(a->algorithm);
        type=EVP_get_digestbyname(OBJ_nid2sn(i));
        if (type == NULL)
                {
                ASN1err(ASN1_F_ASN1_VERIFY,ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);
                goto err;
                }

        if (signature->type == V_ASN1_BIT_STRING && signature->flags & 0x7)
                {
                ASN1err(ASN1_F_ASN1_VERIFY, ASN1_R_INVALID_BIT_STRING_BITS_LEFT);
                goto err;
                }
        
        inl=i2d(data,NULL);
        buf_in=OPENSSL_malloc((unsigned int)inl);
        if (buf_in == NULL)
                {
                ASN1err(ASN1_F_ASN1_VERIFY,ERR_R_MALLOC_FAILURE);
                goto err;
                }
        p=buf_in;

        i2d(data,&p);
        if (!EVP_VerifyInit_ex(&ctx,type, NULL))
                {
                ASN1err(ASN1_F_ASN1_VERIFY,ERR_R_EVP_LIB);
                ret=0;
                goto err;
                }
        EVP_VerifyUpdate(&ctx,(unsigned char *)buf_in,inl);

        OPENSSL_cleanse(buf_in,(unsigned int)inl);
        OPENSSL_free(buf_in);

        if (EVP_VerifyFinal(&ctx,(unsigned char *)signature->data,
                        (unsigned int)signature->length,pkey) <= 0)
                {
                ASN1err(ASN1_F_ASN1_VERIFY,ERR_R_EVP_LIB);
                ret=0;
                goto err;
                }
        /* we don't need to zero the 'ctx' because we just checked
         * public information */
        /* memset(&ctx,0,sizeof(ctx)); */
        ret=1;
err:
        EVP_MD_CTX_cleanup(&ctx);
        return(ret);
        }

#endif


int ASN1_item_verify(const ASN1_ITEM *it, X509_ALGOR *a, ASN1_BIT_STRING *signature,
             void *asn, EVP_PKEY *pkey)
        {
        EVP_MD_CTX ctx;
        const EVP_MD *type;
        unsigned char *buf_in=NULL;
        int ret= -1,i,inl;

        if (!pkey)
                {
                ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_PASSED_NULL_PARAMETER);
                return -1;
                }

        if (signature->type == V_ASN1_BIT_STRING && signature->flags & 0x7)
                {
                ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ASN1_R_INVALID_BIT_STRING_BITS_LEFT);
                return -1;
                }

        EVP_MD_CTX_init(&ctx);
        i=OBJ_obj2nid(a->algorithm);
        type=EVP_get_digestbyname(OBJ_nid2sn(i));
        if (type == NULL)
                {
                ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);
                goto err;
                }

        if (!EVP_VerifyInit_ex(&ctx,type, NULL))
                {
                ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_EVP_LIB);
                ret=0;
                goto err;
                }

        inl = ASN1_item_i2d(asn, &buf_in, it);
        
        if (buf_in == NULL)
                {
                ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_MALLOC_FAILURE);
                goto err;
                }

        EVP_VerifyUpdate(&ctx,(unsigned char *)buf_in,inl);

        OPENSSL_cleanse(buf_in,(unsigned int)inl);
        OPENSSL_free(buf_in);

        if (EVP_VerifyFinal(&ctx,(unsigned char *)signature->data,
                        (unsigned int)signature->length,pkey) <= 0)
                {
                ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_EVP_LIB);
                ret=0;
                goto err;
                }
        /* we don't need to zero the 'ctx' because we just checked
         * public information */
        /* memset(&ctx,0,sizeof(ctx)); */
        ret=1;
err:
        EVP_MD_CTX_cleanup(&ctx);
        return(ret);
        }


Revision:	6969
Committed:	Sat Mar 7 00:07:49 2015 UTC (9 years, 1 month ago) by laffer1
Content type:	text/plain
File size:	6264 byte(s)
Log Message:	Vendor import of OpenSSL 0.9.8ze
#	Content
1	/* crypto/asn1/a_verify.c */
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 <stdio.h>
60	#include <time.h>
61
62	#include "cryptlib.h"
63
64	#ifndef NO_SYS_TYPES_H
65	# include <sys/types.h>
66	#endif
67
68	#include <openssl/bn.h>
69	#include <openssl/x509.h>
70	#include <openssl/objects.h>
71	#include <openssl/buffer.h>
72	#include <openssl/evp.h>
73
74	#ifndef NO_ASN1_OLD
75
76	int ASN1_verify(i2d_of_void i2d, X509_ALGOR a, ASN1_BIT_STRING *signature,
77	char data, EVP_PKEY pkey)
78	{
79	EVP_MD_CTX ctx;
80	const EVP_MD *type;
81	unsigned char p,buf_in=NULL;
82	int ret= -1,i,inl;
83
84	EVP_MD_CTX_init(&ctx);
85	i=OBJ_obj2nid(a->algorithm);
86	type=EVP_get_digestbyname(OBJ_nid2sn(i));
87	if (type == NULL)
88	{
89	ASN1err(ASN1_F_ASN1_VERIFY,ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);
90	goto err;
91	}
92
93	if (signature->type == V_ASN1_BIT_STRING && signature->flags & 0x7)
94	{
95	ASN1err(ASN1_F_ASN1_VERIFY, ASN1_R_INVALID_BIT_STRING_BITS_LEFT);
96	goto err;
97	}
98
99	inl=i2d(data,NULL);
100	buf_in=OPENSSL_malloc((unsigned int)inl);
101	if (buf_in == NULL)
102	{
103	ASN1err(ASN1_F_ASN1_VERIFY,ERR_R_MALLOC_FAILURE);
104	goto err;
105	}
106	p=buf_in;
107
108	i2d(data,&p);
109	if (!EVP_VerifyInit_ex(&ctx,type, NULL))
110	{
111	ASN1err(ASN1_F_ASN1_VERIFY,ERR_R_EVP_LIB);
112	ret=0;
113	goto err;
114	}
115	EVP_VerifyUpdate(&ctx,(unsigned char *)buf_in,inl);
116
117	OPENSSL_cleanse(buf_in,(unsigned int)inl);
118	OPENSSL_free(buf_in);
119
120	if (EVP_VerifyFinal(&ctx,(unsigned char *)signature->data,
121	(unsigned int)signature->length,pkey) <= 0)
122	{
123	ASN1err(ASN1_F_ASN1_VERIFY,ERR_R_EVP_LIB);
124	ret=0;
125	goto err;
126	}
127	/* we don't need to zero the 'ctx' because we just checked
128	* public information */
129	/* memset(&ctx,0,sizeof(ctx)); */
130	ret=1;
131	err:
132	EVP_MD_CTX_cleanup(&ctx);
133	return(ret);
134	}
135
136	#endif
137
138
139	int ASN1_item_verify(const ASN1_ITEM it, X509_ALGOR a, ASN1_BIT_STRING *signature,
140	void asn, EVP_PKEY pkey)
141	{
142	EVP_MD_CTX ctx;
143	const EVP_MD *type;
144	unsigned char *buf_in=NULL;
145	int ret= -1,i,inl;
146
147	if (!pkey)
148	{
149	ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ERR_R_PASSED_NULL_PARAMETER);
150	return -1;
151	}
152
153	if (signature->type == V_ASN1_BIT_STRING && signature->flags & 0x7)
154	{
155	ASN1err(ASN1_F_ASN1_ITEM_VERIFY, ASN1_R_INVALID_BIT_STRING_BITS_LEFT);
156	return -1;
157	}
158
159	EVP_MD_CTX_init(&ctx);
160	i=OBJ_obj2nid(a->algorithm);
161	type=EVP_get_digestbyname(OBJ_nid2sn(i));
162	if (type == NULL)
163	{
164	ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);
165	goto err;
166	}
167
168	if (!EVP_VerifyInit_ex(&ctx,type, NULL))
169	{
170	ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_EVP_LIB);
171	ret=0;
172	goto err;
173	}
174
175	inl = ASN1_item_i2d(asn, &buf_in, it);
176
177	if (buf_in == NULL)
178	{
179	ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_MALLOC_FAILURE);
180	goto err;
181	}
182
183	EVP_VerifyUpdate(&ctx,(unsigned char *)buf_in,inl);
184
185	OPENSSL_cleanse(buf_in,(unsigned int)inl);
186	OPENSSL_free(buf_in);
187
188	if (EVP_VerifyFinal(&ctx,(unsigned char *)signature->data,
189	(unsigned int)signature->length,pkey) <= 0)
190	{
191	ASN1err(ASN1_F_ASN1_ITEM_VERIFY,ERR_R_EVP_LIB);
192	ret=0;
193	goto err;
194	}
195	/* we don't need to zero the 'ctx' because we just checked
196	* public information */
197	/* memset(&ctx,0,sizeof(ctx)); */
198	ret=1;
199	err:
200	EVP_MD_CTX_cleanup(&ctx);
201	return(ret);
202	}
203
204