1/* crypto/asn1/a_digest.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/err.h>
69#include <openssl/evp.h>
70#include <openssl/buffer.h>
71#include <openssl/x509.h>
72
73#ifndef NO_ASN1_OLD
74
75int ASN1_digest(i2d_of_void *i2d, const EVP_MD *type, char *data,
76		unsigned char *md, unsigned int *len)
77	{
78	int i;
79	unsigned char *str,*p;
80
81	i=i2d(data,NULL);
82	if ((str=(unsigned char *)OPENSSL_malloc(i)) == NULL)
83		{
84		ASN1err(ASN1_F_ASN1_DIGEST,ERR_R_MALLOC_FAILURE);
85		return(0);
86		}
87	p=str;
88	i2d(data,&p);
89
90	if (!EVP_Digest(str, i, md, len, type, NULL))
91		return 0;
92	OPENSSL_free(str);
93	return(1);
94	}
95
96#endif
97
98
99int ASN1_item_digest(const ASN1_ITEM *it, const EVP_MD *type, void *asn,
100		unsigned char *md, unsigned int *len)
101	{
102	int i;
103	unsigned char *str = NULL;
104
105	i=ASN1_item_i2d(asn,&str, it);
106	if (!str) return(0);
107
108	if (!EVP_Digest(str, i, md, len, type, NULL))
109		return 0;
110	OPENSSL_free(str);
111	return(1);
112	}
113
114