00001 /* Declarations of functions and data types used for SHA1 sum 00002 library functions. 00003 Copyright (C) 2000, 2001, 2003, 2005, 2006, 2008, 2009, 2010 Free Software 00004 Foundation, Inc. 00005 00006 This program is free software; you can redistribute it and/or modify it 00007 under the terms of the GNU General Public License as published by the 00008 Free Software Foundation; either version 2, or (at your option) any 00009 later version. 00010 00011 This program is distributed in the hope that it will be useful, 00012 but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 GNU General Public License for more details. 00015 00016 You should have received a copy of the GNU General Public License 00017 along with this program; if not, write to the Free Software Foundation, 00018 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 00019 00020 #ifndef SHA1_H 00021 # define SHA1_H 1 00022 00023 # include <stdio.h> 00024 00025 #ifndef _MSC_VER 00026 # include <stdint.h> 00027 #else 00028 typedef unsigned int uint32_t; 00029 #define inline __inline 00030 #endif 00031 00032 00033 # ifdef __cplusplus 00034 extern "C" { 00035 # endif 00036 00037 #define SHA1_DIGEST_SIZE 20 00038 00039 /* Structure to save state of computation between the single steps. */ 00040 struct sha1_ctx 00041 { 00042 uint32_t A; 00043 uint32_t B; 00044 uint32_t C; 00045 uint32_t D; 00046 uint32_t E; 00047 00048 uint32_t total[2]; 00049 uint32_t buflen; 00050 uint32_t buffer[32]; 00051 }; 00052 00053 00054 /* Initialize structure containing state of computation. */ 00055 extern void sha1_init_ctx (struct sha1_ctx *ctx); 00056 00057 /* Starting with the result of former calls of this function (or the 00058 initialization function update the context for the next LEN bytes 00059 starting at BUFFER. 00060 It is necessary that LEN is a multiple of 64!!! */ 00061 extern void sha1_process_block (const void *buffer, size_t len, 00062 struct sha1_ctx *ctx); 00063 00064 /* Starting with the result of former calls of this function (or the 00065 initialization function update the context for the next LEN bytes 00066 starting at BUFFER. 00067 It is NOT required that LEN is a multiple of 64. */ 00068 extern void sha1_process_bytes (const void *buffer, size_t len, 00069 struct sha1_ctx *ctx); 00070 00071 /* Process the remaining bytes in the buffer and put result from CTX 00072 in first 20 bytes following RESBUF. The result is always in little 00073 endian byte order, so that a byte-wise output yields to the wanted 00074 ASCII representation of the message digest. */ 00075 extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf); 00076 00077 00078 /* Put result from CTX in first 20 bytes following RESBUF. The result is 00079 always in little endian byte order, so that a byte-wise output yields 00080 to the wanted ASCII representation of the message digest. */ 00081 extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf); 00082 00083 00084 /* Compute SHA1 message digest for bytes read from STREAM. The 00085 resulting message digest number will be written into the 20 bytes 00086 beginning at RESBLOCK. */ 00087 extern int sha1_stream (FILE *stream, void *resblock); 00088 00089 /* Compute SHA1 message digest for LEN bytes beginning at BUFFER. The 00090 result is always in little endian byte order, so that a byte-wise 00091 output yields to the wanted ASCII representation of the message 00092 digest. */ 00093 extern void *sha1_buffer (const char *buffer, size_t len, void *resblock); 00094 00095 # ifdef __cplusplus 00096 } 00097 # endif 00098 00099 #endif
1.7.1