Mercurial > hg > CbC > CbC_gcc
annotate include/sha1.h @ 138:fc828634a951
merge
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Thu, 08 Nov 2018 14:17:14 +0900 |
parents | 84e7813d76e9 |
children | 1830386684a0 |
rev | line source |
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0 | 1 /* Declarations of functions and data types used for SHA1 sum |
2 library functions. | |
131 | 3 Copyright (C) 2000-2018 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 | |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
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changeset
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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 |