Mercurial > hg > CbC > CbC_gcc
annotate include/sha1.h @ 88:f214c1d5b862
merge 89
author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
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date | Tue, 20 Dec 2011 18:53:46 +0900 |
parents | b7f97abdc517 |
children | 04ced10e8804 |
rev | line source |
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0 | 1 /* Declarations of functions and data types used for SHA1 sum |
2 library functions. | |
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b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
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3 Copyright (C) 2000, 2001, 2003, 2005, 2006, 2008, 2010 |
0 | 4 Free Software Foundation, Inc. |
5 | |
6 This program is free software; you can redistribute it and/or modify it | |
7 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
diff
changeset
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8 Free Software Foundation; either version 3, or (at your option) any |
0 | 9 later version. |
10 | |
11 This program is distributed in the hope that it will be useful, | |
12 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 GNU General Public License for more details. | |
15 | |
16 You should have received a copy of the GNU General Public License | |
17 along with this program; if not, write to the Free Software Foundation, | |
18 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | |
19 | |
20 #ifndef SHA1_H | |
21 # define SHA1_H 1 | |
22 | |
23 #include <stdio.h> | |
24 | |
25 #if defined HAVE_LIMITS_H || _LIBC | |
26 # include <limits.h> | |
27 #endif | |
28 | |
29 #include "ansidecl.h" | |
30 | |
31 /* The following contortions are an attempt to use the C preprocessor | |
32 to determine an unsigned integral type that is 32 bits wide. An | |
33 alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but | |
34 doing that would require that the configure script compile and *run* | |
35 the resulting executable. Locally running cross-compiled executables | |
36 is usually not possible. */ | |
37 | |
38 #ifdef _LIBC | |
39 # include <sys/types.h> | |
40 typedef u_int32_t sha1_uint32; | |
41 typedef uintptr_t sha1_uintptr; | |
42 #else | |
43 # define INT_MAX_32_BITS 2147483647 | |
44 | |
45 /* If UINT_MAX isn't defined, assume it's a 32-bit type. | |
46 This should be valid for all systems GNU cares about because | |
47 that doesn't include 16-bit systems, and only modern systems | |
48 (that certainly have <limits.h>) have 64+-bit integral types. */ | |
49 | |
50 # ifndef INT_MAX | |
51 # define INT_MAX INT_MAX_32_BITS | |
52 # endif | |
53 | |
54 # if INT_MAX == INT_MAX_32_BITS | |
55 typedef unsigned int sha1_uint32; | |
56 # else | |
57 # if SHRT_MAX == INT_MAX_32_BITS | |
58 typedef unsigned short sha1_uint32; | |
59 # else | |
60 # if LONG_MAX == INT_MAX_32_BITS | |
61 typedef unsigned long sha1_uint32; | |
62 # else | |
63 /* The following line is intended to evoke an error. | |
64 Using #error is not portable enough. */ | |
65 "Cannot determine unsigned 32-bit data type." | |
66 # endif | |
67 # endif | |
68 # endif | |
69 #endif | |
70 | |
71 #ifdef __cplusplus | |
72 extern "C" { | |
73 #endif | |
74 | |
75 /* Structure to save state of computation between the single steps. */ | |
76 struct sha1_ctx | |
77 { | |
78 sha1_uint32 A; | |
79 sha1_uint32 B; | |
80 sha1_uint32 C; | |
81 sha1_uint32 D; | |
82 sha1_uint32 E; | |
83 | |
84 sha1_uint32 total[2]; | |
85 sha1_uint32 buflen; | |
86 sha1_uint32 buffer[32]; | |
87 }; | |
88 | |
89 | |
90 /* Initialize structure containing state of computation. */ | |
91 extern void sha1_init_ctx (struct sha1_ctx *ctx); | |
92 | |
93 /* Starting with the result of former calls of this function (or the | |
94 initialization function update the context for the next LEN bytes | |
95 starting at BUFFER. | |
96 It is necessary that LEN is a multiple of 64!!! */ | |
97 extern void sha1_process_block (const void *buffer, size_t len, | |
98 struct sha1_ctx *ctx); | |
99 | |
100 /* Starting with the result of former calls of this function (or the | |
101 initialization function update the context for the next LEN bytes | |
102 starting at BUFFER. | |
103 It is NOT required that LEN is a multiple of 64. */ | |
104 extern void sha1_process_bytes (const void *buffer, size_t len, | |
105 struct sha1_ctx *ctx); | |
106 | |
107 /* Process the remaining bytes in the buffer and put result from CTX | |
108 in first 20 bytes following RESBUF. The result is always in little | |
109 endian byte order, so that a byte-wise output yields to the wanted | |
110 ASCII representation of the message digest. | |
111 | |
112 IMPORTANT: On some systems it is required that RESBUF be correctly | |
113 aligned for a 32 bits value. */ | |
114 extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf); | |
115 | |
116 | |
117 /* Put result from CTX in first 20 bytes following RESBUF. The result is | |
118 always in little endian byte order, so that a byte-wise output yields | |
119 to the wanted ASCII representation of the message digest. | |
120 | |
121 IMPORTANT: On some systems it is required that RESBUF is correctly | |
122 aligned for a 32 bits value. */ | |
123 extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf); | |
124 | |
125 | |
126 /* Compute SHA1 message digest for bytes read from STREAM. The | |
127 resulting message digest number will be written into the 20 bytes | |
128 beginning at RESBLOCK. */ | |
129 extern int sha1_stream (FILE *stream, void *resblock); | |
130 | |
131 /* Compute SHA1 message digest for LEN bytes beginning at BUFFER. The | |
132 result is always in little endian byte order, so that a byte-wise | |
133 output yields to the wanted ASCII representation of the message | |
134 digest. */ | |
135 extern void *sha1_buffer (const char *buffer, size_t len, void *resblock); | |
136 | |
137 #ifdef __cplusplus | |
138 } | |
139 #endif | |
140 | |
141 #endif |