| /* |
| Copyright (C) 2012 Werner Dittmann |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with this library; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| |
| * In addition, as a special exception, the copyright holders give |
| * permission to link the code of portions of this program with the |
| * OpenSSL library under certain conditions as described in each |
| * individual source file, and distribute linked combinations |
| * including the two. |
| * You must obey the GNU General Public License in all respects |
| * for all of the code used other than OpenSSL. If you modify |
| * file(s) with this exception, you may extend this exception to your |
| * version of the file(s), but you are not obligated to do so. If you |
| * do not wish to do so, delete this exception statement from your |
| * version. If you delete this exception statement from all source |
| * files in the program, then also delete it here. |
| */ |
| |
| /** |
| * @author: Werner Dittmann |
| */ |
| |
| #include <zrtp/crypto/sha2.h> |
| #include <zrtp/crypto/sha256.h> |
| |
| void sha256(unsigned char *data, unsigned int dataLength, unsigned char *digest ) |
| { |
| sha256_ctx ctx; |
| |
| sha256_begin(&ctx); |
| sha256_hash(data, dataLength, &ctx); |
| sha256_end(digest, &ctx); |
| } |
| |
| void sha256(unsigned char *dataChunks[], unsigned int dataChunckLength[], unsigned char *digest) |
| { |
| sha256_ctx ctx; |
| |
| sha256_begin(&ctx); |
| while(*dataChunks) { |
| sha256_hash(*dataChunks, *dataChunckLength, &ctx); |
| dataChunks++; |
| dataChunckLength++; |
| } |
| sha256_end(digest, &ctx); |
| } |
| |
| void* createSha256Context() |
| { |
| sha256_ctx *ctx = reinterpret_cast<sha256_ctx*>(malloc(sizeof(sha256_ctx))); |
| sha256_begin(ctx); |
| return (void*)ctx; |
| } |
| |
| void closeSha256Context(void* ctx, unsigned char* digest) |
| { |
| sha256_ctx* hd = reinterpret_cast<sha256_ctx*>(ctx); |
| |
| if (digest != NULL) { |
| sha256_end(digest, hd); |
| } |
| free(hd); |
| } |
| |
| void sha256Ctx(void* ctx, unsigned char* data, unsigned int dataLength) |
| { |
| sha256_ctx* hd = reinterpret_cast<sha256_ctx*>(ctx); |
| |
| sha256_hash(data, dataLength, hd); |
| } |
| |
| void sha256Ctx(void* ctx, unsigned char* dataChunks[], unsigned int dataChunkLength[]) |
| { |
| sha256_ctx* hd = reinterpret_cast<sha256_ctx*>(ctx); |
| |
| while (*dataChunks) { |
| sha256_hash(*dataChunks, *dataChunkLength, hd); |
| dataChunks++; |
| dataChunkLength++; |
| } |
| } |