diff options
Diffstat (limited to 'md-sha256.c')
-rw-r--r-- | md-sha256.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/md-sha256.c b/md-sha256.c new file mode 100644 index 000000000..08848f841 --- /dev/null +++ b/md-sha256.c | |||
@@ -0,0 +1,71 @@ | |||
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" | ||
20 | #include <openssl/evp.h> | ||
21 | #include <sha2.h> | ||
22 | |||
23 | RCSID("$OpenBSD: md-sha256.c,v 1.1 2006/03/07 09:07:40 djm Exp $"); | ||
24 | |||
25 | const EVP_MD *evp_ssh_sha256(void); | ||
26 | |||
27 | static int | ||
28 | ssh_sha256_init(EVP_MD_CTX *ctxt) | ||
29 | { | ||
30 | SHA256_Init(ctxt->md_data); | ||
31 | return (1); | ||
32 | } | ||
33 | |||
34 | static int | ||
35 | ssh_sha256_update(EVP_MD_CTX *ctxt, const void *data, unsigned long len) | ||
36 | { | ||
37 | SHA256_Update(ctxt->md_data, data, len); | ||
38 | return (1); | ||
39 | } | ||
40 | |||
41 | static int | ||
42 | ssh_sha256_final(EVP_MD_CTX *ctxt, unsigned char *digest) | ||
43 | { | ||
44 | SHA256_Final(digest, ctxt->md_data); | ||
45 | return (1); | ||
46 | } | ||
47 | |||
48 | static int | ||
49 | ssh_sha256_cleanup(EVP_MD_CTX *ctxt) | ||
50 | { | ||
51 | memset(ctxt->md_data, 0, sizeof(SHA256_CTX)); | ||
52 | return (1); | ||
53 | } | ||
54 | |||
55 | const EVP_MD * | ||
56 | evp_ssh_sha256(void) | ||
57 | { | ||
58 | static EVP_MD ssh_sha256; | ||
59 | |||
60 | memset(&ssh_sha256, 0, sizeof(ssh_sha256)); | ||
61 | ssh_sha256.type = NID_undef; | ||
62 | ssh_sha256.md_size = SHA256_DIGEST_LENGTH; | ||
63 | ssh_sha256.init = ssh_sha256_init; | ||
64 | ssh_sha256.update = ssh_sha256_update; | ||
65 | ssh_sha256.final = ssh_sha256_final; | ||
66 | ssh_sha256.cleanup = ssh_sha256_cleanup; | ||
67 | ssh_sha256.block_size = SHA256_BLOCK_LENGTH; | ||
68 | ssh_sha256.ctx_size = sizeof(SHA256_CTX); | ||
69 | |||
70 | return (&ssh_sha256); | ||
71 | } | ||