1 /* 2 * Checksum functions 3 * 4 * Copyright (C) 2018-2021, Joachim Metz <joachim.metz@gmail.com> 5 * 6 * Refer to AUTHORS for acknowledgements. 7 * 8 * This program is free software: you can redistribute it and/or modify 9 * it under the terms of the GNU Lesser General Public License as published by 10 * the Free Software Foundation, either version 3 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public License 19 * along with this program. If not, see <https://www.gnu.org/licenses/>. 20 */ 21 22 #if !defined( _LIBFSAPFS_CHECKSUM_H ) 23 #define _LIBFSAPFS_CHECKSUM_H 24 25 #include <common.h> 26 #include <types.h> 27 28 #include "libfsapfs_libcerror.h" 29 #include "libfsapfs_extern.h" 30 31 #if defined( __cplusplus ) 32 extern "C" { 33 #endif 34 35 LIBFSAPFS_EXTERN_VARIABLE \ 36 uint32_t libfsapfs_checksum_crc32_table[ 256 ]; 37 38 LIBFSAPFS_EXTERN_VARIABLE \ 39 int libfsapfs_checksum_crc32_table_computed; 40 41 void libfsapfs_checksum_initialize_crc32_table( 42 uint32_t polynomial ); 43 44 int libfsapfs_checksum_calculate_weak_crc32( 45 uint32_t *checksum, 46 const uint8_t *buffer, 47 size_t size, 48 uint32_t initial_value, 49 libcerror_error_t **error ); 50 51 int libfsapfs_checksum_calculate_fletcher64( 52 uint64_t *checksum, 53 const uint8_t *buffer, 54 size_t size, 55 uint64_t initial_value, 56 libcerror_error_t **error ); 57 58 #if defined( __cplusplus ) 59 } 60 #endif 61 62 #endif /* !defined( _LIBFSAPFS_CHECKSUM_H ) */ 63 64