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31652869 | 1 | /* $OpenBSD: md-sha256.c,v 1.5 2006/08/03 03:34:42 deraadt Exp $ */ |
2ff8003a | 2 | /* |
3 | * Copyright (c) 2005 Damien Miller <djm@openbsd.org> | |
4 | * | |
5 | * Permission to use, copy, modify, and distribute this software for any | |
6 | * purpose with or without fee is hereby granted, provided that the above | |
7 | * copyright notice and this permission notice appear in all copies. | |
8 | * | |
9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
16 | */ | |
17 | ||
18 | /* EVP wrapper for SHA256 */ | |
19 | ||
20 | #include "includes.h" | |
31652869 | 21 | |
22 | #include <sys/types.h> | |
b1f0c612 | 23 | #include <openssl/opensslv.h> |
13ff27b7 | 24 | |
b1f0c612 | 25 | #if !defined(HAVE_EVP_SHA256) && (OPENSSL_VERSION_NUMBER >= 0x00907000L) |
13ff27b7 | 26 | |
f73e2ad7 | 27 | #include <string.h> |
2ff8003a | 28 | #include <openssl/evp.h> |
2f360c89 | 29 | #ifdef HAVE_SHA256_UPDATE |
30 | # ifdef HAVE_SHA2_H | |
31 | # include <sha2.h> | |
32 | # elif defined(HAVE_CRYPTO_SHA2_H) | |
33 | # include <crypto/sha2.h> | |
34 | # endif | |
f73e2ad7 | 35 | #endif |
2ff8003a | 36 | |
2ff8003a | 37 | const EVP_MD *evp_ssh_sha256(void); |
38 | ||
39 | static int | |
40 | ssh_sha256_init(EVP_MD_CTX *ctxt) | |
41 | { | |
42 | SHA256_Init(ctxt->md_data); | |
43 | return (1); | |
44 | } | |
45 | ||
46 | static int | |
47 | ssh_sha256_update(EVP_MD_CTX *ctxt, const void *data, unsigned long len) | |
48 | { | |
49 | SHA256_Update(ctxt->md_data, data, len); | |
50 | return (1); | |
51 | } | |
52 | ||
53 | static int | |
54 | ssh_sha256_final(EVP_MD_CTX *ctxt, unsigned char *digest) | |
55 | { | |
56 | SHA256_Final(digest, ctxt->md_data); | |
57 | return (1); | |
58 | } | |
59 | ||
60 | static int | |
61 | ssh_sha256_cleanup(EVP_MD_CTX *ctxt) | |
62 | { | |
63 | memset(ctxt->md_data, 0, sizeof(SHA256_CTX)); | |
64 | return (1); | |
65 | } | |
66 | ||
67 | const EVP_MD * | |
68 | evp_ssh_sha256(void) | |
69 | { | |
70 | static EVP_MD ssh_sha256; | |
71 | ||
72 | memset(&ssh_sha256, 0, sizeof(ssh_sha256)); | |
73 | ssh_sha256.type = NID_undef; | |
74 | ssh_sha256.md_size = SHA256_DIGEST_LENGTH; | |
75 | ssh_sha256.init = ssh_sha256_init; | |
76 | ssh_sha256.update = ssh_sha256_update; | |
77 | ssh_sha256.final = ssh_sha256_final; | |
78 | ssh_sha256.cleanup = ssh_sha256_cleanup; | |
79 | ssh_sha256.block_size = SHA256_BLOCK_LENGTH; | |
80 | ssh_sha256.ctx_size = sizeof(SHA256_CTX); | |
81 | ||
82 | return (&ssh_sha256); | |
83 | } | |
13ff27b7 | 84 | |
b1f0c612 | 85 | #endif /* !defined(HAVE_EVP_SHA256) && (OPENSSL_VERSION_NUMBER >= 0x00907000L) */ |
13ff27b7 | 86 |