1 /* <!-- copyright */ 2 /* 3 * aria2 - The high speed download utility 4 * 5 * Copyright (C) 2006 Tatsuhiro Tsujikawa 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 * 21 * In addition, as a special exception, the copyright holders give 22 * permission to link the code of portions of this program with the 23 * OpenSSL library under certain conditions as described in each 24 * individual source file, and distribute linked combinations 25 * including the two. 26 * You must obey the GNU General Public License in all respects 27 * for all of the code used other than OpenSSL. If you modify 28 * file(s) with this exception, you may extend this exception to your 29 * version of the file(s), but you are not obligated to do so. If you 30 * do not wish to do so, delete this exception statement from your 31 * version. If you delete this exception statement from all source 32 * files in the program, then also delete it here. 33 */ 34 /* copyright --> */ 35 #ifndef D_MESSAGE_DIGEST_HELPER_H 36 #define D_MESSAGE_DIGEST_HELPER_H 37 38 #include "common.h" 39 40 #include <string> 41 #include <memory> 42 43 namespace aria2 { 44 45 class BinaryStream; 46 class MessageDigest; 47 48 namespace message_digest { 49 50 /** 51 * ctx must be initialized or reset before calling this function. 52 * Returns raw digest string, not hex digest 53 */ 54 std::string digest(MessageDigest* ctx, const std::shared_ptr<BinaryStream>& bs, 55 int64_t offset, int64_t length); 56 57 /** 58 * Stores *raw* message digest into md. 59 * Throws exception when mdLength is less than the size of message digest. 60 */ 61 void digest(unsigned char* md, size_t mdLength, MessageDigest* ctx, 62 const void* data, size_t length); 63 64 } // namespace message_digest 65 66 } // namespace aria2 67 68 #endif // D_MESSAGE_DIGEST_HELPER_H 69