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2ff8003a | 1 | /* |
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" | |
b1f0c612 | 20 | #include <openssl/opensslv.h> |
13ff27b7 | 21 | |
b1f0c612 | 22 | #if !defined(HAVE_EVP_SHA256) && (OPENSSL_VERSION_NUMBER >= 0x00907000L) |
13ff27b7 | 23 | |
f73e2ad7 | 24 | #include <string.h> |
2ff8003a | 25 | #include <openssl/evp.h> |
2f360c89 | 26 | #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 | |
f73e2ad7 | 32 | #endif |
2ff8003a | 33 | |
34 | RCSID("$OpenBSD: md-sha256.c,v 1.1 2006/03/07 09:07:40 djm Exp $"); | |
35 | ||
36 | const EVP_MD *evp_ssh_sha256(void); | |
37 | ||
38 | static int | |
39 | ssh_sha256_init(EVP_MD_CTX *ctxt) | |
40 | { | |
41 | SHA256_Init(ctxt->md_data); | |
42 | return (1); | |
43 | } | |
44 | ||
45 | static int | |
46 | ssh_sha256_update(EVP_MD_CTX *ctxt, const void *data, unsigned long len) | |
47 | { | |
48 | SHA256_Update(ctxt->md_data, data, len); | |
49 | return (1); | |
50 | } | |
51 | ||
52 | static int | |
53 | ssh_sha256_final(EVP_MD_CTX *ctxt, unsigned char *digest) | |
54 | { | |
55 | SHA256_Final(digest, ctxt->md_data); | |
56 | return (1); | |
57 | } | |
58 | ||
59 | static int | |
60 | ssh_sha256_cleanup(EVP_MD_CTX *ctxt) | |
61 | { | |
62 | memset(ctxt->md_data, 0, sizeof(SHA256_CTX)); | |
63 | return (1); | |
64 | } | |
65 | ||
66 | const EVP_MD * | |
67 | evp_ssh_sha256(void) | |
68 | { | |
69 | static EVP_MD ssh_sha256; | |
70 | ||
71 | memset(&ssh_sha256, 0, sizeof(ssh_sha256)); | |
72 | ssh_sha256.type = NID_undef; | |
73 | ssh_sha256.md_size = SHA256_DIGEST_LENGTH; | |
74 | ssh_sha256.init = ssh_sha256_init; | |
75 | ssh_sha256.update = ssh_sha256_update; | |
76 | ssh_sha256.final = ssh_sha256_final; | |
77 | ssh_sha256.cleanup = ssh_sha256_cleanup; | |
78 | ssh_sha256.block_size = SHA256_BLOCK_LENGTH; | |
79 | ssh_sha256.ctx_size = sizeof(SHA256_CTX); | |
80 | ||
81 | return (&ssh_sha256); | |
82 | } | |
13ff27b7 | 83 | |
b1f0c612 | 84 | #endif /* !defined(HAVE_EVP_SHA256) && (OPENSSL_VERSION_NUMBER >= 0x00907000L) */ |
13ff27b7 | 85 |