2 * Copyright (c) 2005 Damien Miller <djm@openbsd.org>
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.
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.
17 /* EVP wrapper for SHA256 */
21 #ifndef HAVE_EVP_SHA256
24 #include <openssl/evp.h>
25 #if defined(HAVE_SHA2_H) && defined(HAVE_SHA256_UPDATE)
29 RCSID("$OpenBSD: md-sha256.c,v 1.1 2006/03/07 09:07:40 djm Exp $");
31 const EVP_MD *evp_ssh_sha256(void);
34 ssh_sha256_init(EVP_MD_CTX *ctxt)
36 SHA256_Init(ctxt->md_data);
41 ssh_sha256_update(EVP_MD_CTX *ctxt, const void *data, unsigned long len)
43 SHA256_Update(ctxt->md_data, data, len);
48 ssh_sha256_final(EVP_MD_CTX *ctxt, unsigned char *digest)
50 SHA256_Final(digest, ctxt->md_data);
55 ssh_sha256_cleanup(EVP_MD_CTX *ctxt)
57 memset(ctxt->md_data, 0, sizeof(SHA256_CTX));
64 static EVP_MD ssh_sha256;
66 memset(&ssh_sha256, 0, sizeof(ssh_sha256));
67 ssh_sha256.type = NID_undef;
68 ssh_sha256.md_size = SHA256_DIGEST_LENGTH;
69 ssh_sha256.init = ssh_sha256_init;
70 ssh_sha256.update = ssh_sha256_update;
71 ssh_sha256.final = ssh_sha256_final;
72 ssh_sha256.cleanup = ssh_sha256_cleanup;
73 ssh_sha256.block_size = SHA256_BLOCK_LENGTH;
74 ssh_sha256.ctx_size = sizeof(SHA256_CTX);
79 #endif /* HAVE_EVP_SHA256 */