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annotate include/sha1.h @ 158:494b0b89df80 default tip
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | 1830386684a0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Declarations of functions and data types used for SHA1 sum |
| 2 library functions. | |
| 145 | 3 Copyright (C) 2000-2020 Free Software Foundation, Inc. |
| 0 | 4 |
| 5 This program is free software; you can redistribute it and/or modify it | |
| 6 under the terms of the GNU General Public License as published by the | |
|
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update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
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7 Free Software Foundation; either version 3, or (at your option) any |
| 0 | 8 later version. |
| 9 | |
| 10 This program is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 GNU General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU General Public License | |
| 16 along with this program; if not, write to the Free Software Foundation, | |
| 17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | |
| 18 | |
| 19 #ifndef SHA1_H | |
| 20 # define SHA1_H 1 | |
| 21 | |
| 22 #include <stdio.h> | |
| 23 | |
| 24 #if defined HAVE_LIMITS_H || _LIBC | |
| 25 # include <limits.h> | |
| 26 #endif | |
| 27 | |
| 28 #include "ansidecl.h" | |
| 29 | |
| 30 /* The following contortions are an attempt to use the C preprocessor | |
| 31 to determine an unsigned integral type that is 32 bits wide. An | |
| 32 alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but | |
| 33 doing that would require that the configure script compile and *run* | |
| 34 the resulting executable. Locally running cross-compiled executables | |
| 35 is usually not possible. */ | |
| 36 | |
| 37 #ifdef _LIBC | |
| 38 # include <sys/types.h> | |
| 39 typedef u_int32_t sha1_uint32; | |
| 40 typedef uintptr_t sha1_uintptr; | |
| 111 | 41 #elif defined (HAVE_SYS_TYPES_H) && defined (HAVE_STDINT_H) |
| 42 #include <stdint.h> | |
| 43 #include <sys/types.h> | |
| 44 typedef uint32_t sha1_uint32; | |
| 45 typedef uintptr_t sha1_uintptr; | |
| 0 | 46 #else |
| 47 # define INT_MAX_32_BITS 2147483647 | |
| 48 | |
| 49 /* If UINT_MAX isn't defined, assume it's a 32-bit type. | |
| 50 This should be valid for all systems GNU cares about because | |
| 51 that doesn't include 16-bit systems, and only modern systems | |
| 52 (that certainly have <limits.h>) have 64+-bit integral types. */ | |
| 53 | |
| 54 # ifndef INT_MAX | |
| 55 # define INT_MAX INT_MAX_32_BITS | |
| 56 # endif | |
| 57 | |
| 58 # if INT_MAX == INT_MAX_32_BITS | |
| 59 typedef unsigned int sha1_uint32; | |
| 60 # else | |
| 61 # if SHRT_MAX == INT_MAX_32_BITS | |
| 62 typedef unsigned short sha1_uint32; | |
| 63 # else | |
| 64 # if LONG_MAX == INT_MAX_32_BITS | |
| 65 typedef unsigned long sha1_uint32; | |
| 66 # else | |
| 67 /* The following line is intended to evoke an error. | |
| 68 Using #error is not portable enough. */ | |
| 69 "Cannot determine unsigned 32-bit data type." | |
| 70 # endif | |
| 71 # endif | |
| 72 # endif | |
| 73 #endif | |
| 74 | |
| 75 #ifdef __cplusplus | |
| 76 extern "C" { | |
| 77 #endif | |
| 78 | |
| 79 /* Structure to save state of computation between the single steps. */ | |
| 80 struct sha1_ctx | |
| 81 { | |
| 82 sha1_uint32 A; | |
| 83 sha1_uint32 B; | |
| 84 sha1_uint32 C; | |
| 85 sha1_uint32 D; | |
| 86 sha1_uint32 E; | |
| 87 | |
| 88 sha1_uint32 total[2]; | |
| 89 sha1_uint32 buflen; | |
| 90 sha1_uint32 buffer[32]; | |
| 91 }; | |
| 92 | |
| 93 | |
| 94 /* Initialize structure containing state of computation. */ | |
| 95 extern void sha1_init_ctx (struct sha1_ctx *ctx); | |
| 96 | |
| 97 /* Starting with the result of former calls of this function (or the | |
| 98 initialization function update the context for the next LEN bytes | |
| 99 starting at BUFFER. | |
| 100 It is necessary that LEN is a multiple of 64!!! */ | |
| 101 extern void sha1_process_block (const void *buffer, size_t len, | |
| 102 struct sha1_ctx *ctx); | |
| 103 | |
| 104 /* Starting with the result of former calls of this function (or the | |
| 105 initialization function update the context for the next LEN bytes | |
| 106 starting at BUFFER. | |
| 107 It is NOT required that LEN is a multiple of 64. */ | |
| 108 extern void sha1_process_bytes (const void *buffer, size_t len, | |
| 109 struct sha1_ctx *ctx); | |
| 110 | |
| 111 /* Process the remaining bytes in the buffer and put result from CTX | |
| 112 in first 20 bytes following RESBUF. The result is always in little | |
| 113 endian byte order, so that a byte-wise output yields to the wanted | |
| 114 ASCII representation of the message digest. | |
| 115 | |
| 116 IMPORTANT: On some systems it is required that RESBUF be correctly | |
| 117 aligned for a 32 bits value. */ | |
| 118 extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf); | |
| 119 | |
| 120 | |
| 121 /* Put result from CTX in first 20 bytes following RESBUF. The result is | |
| 122 always in little endian byte order, so that a byte-wise output yields | |
| 123 to the wanted ASCII representation of the message digest. | |
| 124 | |
| 125 IMPORTANT: On some systems it is required that RESBUF is correctly | |
| 126 aligned for a 32 bits value. */ | |
| 127 extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf); | |
| 128 | |
| 129 | |
| 130 /* Compute SHA1 message digest for bytes read from STREAM. The | |
| 131 resulting message digest number will be written into the 20 bytes | |
| 132 beginning at RESBLOCK. */ | |
| 133 extern int sha1_stream (FILE *stream, void *resblock); | |
| 134 | |
| 135 /* Compute SHA1 message digest for LEN bytes beginning at BUFFER. The | |
| 136 result is always in little endian byte order, so that a byte-wise | |
| 137 output yields to the wanted ASCII representation of the message | |
| 138 digest. */ | |
| 139 extern void *sha1_buffer (const char *buffer, size_t len, void *resblock); | |
| 140 | |
| 141 #ifdef __cplusplus | |
| 142 } | |
| 143 #endif | |
| 144 | |
| 145 #endif |