blob: 8ea0ac4336f9cffd7952fdedc0307f9b639f7026 [file] [log] [blame]
Damien Millera63128d2006-03-15 12:08:28 +11001/*
2 * Copyright (c) 2005 Damien Miller <djm@openbsd.org>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17/* EVP wrapper for SHA256 */
18
19#include "includes.h"
Tim Rice425a6882006-03-15 20:17:05 -080020#include <openssl/opensslv.h>
Damien Milleraf87af12006-03-15 13:02:28 +110021
Tim Rice425a6882006-03-15 20:17:05 -080022#if !defined(HAVE_EVP_SHA256) && (OPENSSL_VERSION_NUMBER >= 0x00907000L)
Damien Milleraf87af12006-03-15 13:02:28 +110023
Damien Miller41e364b2006-03-15 13:12:41 +110024#include <string.h>
Damien Millera63128d2006-03-15 12:08:28 +110025#include <openssl/evp.h>
Darren Tuckerc4953012006-03-16 08:14:34 +110026#ifdef HAVE_SHA256_UPDATE
27# ifdef HAVE_SHA2_H
28# include <sha2.h>
29# elif defined(HAVE_CRYPTO_SHA2_H)
30# include <crypto/sha2.h>
31# endif
Damien Miller41e364b2006-03-15 13:12:41 +110032#endif
Damien Millera63128d2006-03-15 12:08:28 +110033
Damien Millera63128d2006-03-15 12:08:28 +110034const EVP_MD *evp_ssh_sha256(void);
35
36static int
37ssh_sha256_init(EVP_MD_CTX *ctxt)
38{
39 SHA256_Init(ctxt->md_data);
40 return (1);
41}
42
43static int
44ssh_sha256_update(EVP_MD_CTX *ctxt, const void *data, unsigned long len)
45{
46 SHA256_Update(ctxt->md_data, data, len);
47 return (1);
48}
49
50static int
51ssh_sha256_final(EVP_MD_CTX *ctxt, unsigned char *digest)
52{
53 SHA256_Final(digest, ctxt->md_data);
54 return (1);
55}
56
57static int
58ssh_sha256_cleanup(EVP_MD_CTX *ctxt)
59{
60 memset(ctxt->md_data, 0, sizeof(SHA256_CTX));
61 return (1);
62}
63
64const EVP_MD *
65evp_ssh_sha256(void)
66{
67 static EVP_MD ssh_sha256;
68
69 memset(&ssh_sha256, 0, sizeof(ssh_sha256));
70 ssh_sha256.type = NID_undef;
71 ssh_sha256.md_size = SHA256_DIGEST_LENGTH;
72 ssh_sha256.init = ssh_sha256_init;
73 ssh_sha256.update = ssh_sha256_update;
74 ssh_sha256.final = ssh_sha256_final;
75 ssh_sha256.cleanup = ssh_sha256_cleanup;
76 ssh_sha256.block_size = SHA256_BLOCK_LENGTH;
77 ssh_sha256.ctx_size = sizeof(SHA256_CTX);
78
79 return (&ssh_sha256);
80}
Damien Milleraf87af12006-03-15 13:02:28 +110081
Tim Rice425a6882006-03-15 20:17:05 -080082#endif /* !defined(HAVE_EVP_SHA256) && (OPENSSL_VERSION_NUMBER >= 0x00907000L) */
Damien Milleraf87af12006-03-15 13:02:28 +110083