| /* |
| * Copyright (c) 2005 Damien Miller <djm@openbsd.org> |
| * |
| * Permission to use, copy, modify, and distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* EVP wrapper for SHA256 */ |
| |
| #include "includes.h" |
| |
| #ifndef HAVE_EVP_SHA256 |
| |
| #include <openssl/evp.h> |
| |
| RCSID("$OpenBSD: md-sha256.c,v 1.1 2006/03/07 09:07:40 djm Exp $"); |
| |
| const EVP_MD *evp_ssh_sha256(void); |
| |
| static int |
| ssh_sha256_init(EVP_MD_CTX *ctxt) |
| { |
| SHA256_Init(ctxt->md_data); |
| return (1); |
| } |
| |
| static int |
| ssh_sha256_update(EVP_MD_CTX *ctxt, const void *data, unsigned long len) |
| { |
| SHA256_Update(ctxt->md_data, data, len); |
| return (1); |
| } |
| |
| static int |
| ssh_sha256_final(EVP_MD_CTX *ctxt, unsigned char *digest) |
| { |
| SHA256_Final(digest, ctxt->md_data); |
| return (1); |
| } |
| |
| static int |
| ssh_sha256_cleanup(EVP_MD_CTX *ctxt) |
| { |
| memset(ctxt->md_data, 0, sizeof(SHA256_CTX)); |
| return (1); |
| } |
| |
| const EVP_MD * |
| evp_ssh_sha256(void) |
| { |
| static EVP_MD ssh_sha256; |
| |
| memset(&ssh_sha256, 0, sizeof(ssh_sha256)); |
| ssh_sha256.type = NID_undef; |
| ssh_sha256.md_size = SHA256_DIGEST_LENGTH; |
| ssh_sha256.init = ssh_sha256_init; |
| ssh_sha256.update = ssh_sha256_update; |
| ssh_sha256.final = ssh_sha256_final; |
| ssh_sha256.cleanup = ssh_sha256_cleanup; |
| ssh_sha256.block_size = SHA256_BLOCK_LENGTH; |
| ssh_sha256.ctx_size = sizeof(SHA256_CTX); |
| |
| return (&ssh_sha256); |
| } |
| |
| #endif /* HAVE_EVP_SHA256 */ |
| |