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1 | /* Declaration of functions and data types used for MD5 sum computing |
2 | library functions. | |
ba318903 | 3 | Copyright (C) 1995-1997, 1999-2001, 2004-2006, 2008-2014 Free Software |
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4 | Foundation, Inc. |
5 | This file is part of the GNU C Library. | |
693c4692 | 6 | |
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7 | This program is free software; you can redistribute it and/or modify it |
8 | under the terms of the GNU General Public License as published by the | |
9 | Free Software Foundation; either version 3, or (at your option) any | |
10 | later version. | |
693c4692 | 11 | |
942f733f | 12 | This program is distributed in the hope that it will be useful, |
693c4692 | 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | GNU General Public License for more details. | |
693c4692 | 16 | |
942f733f | 17 | You should have received a copy of the GNU General Public License |
caf8a9b2 | 18 | along with this program; if not, see <http://www.gnu.org/licenses/>. */ |
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19 | |
20 | #ifndef _MD5_H | |
21 | #define _MD5_H 1 | |
22 | ||
23 | #include <stdio.h> | |
5f90be1b | 24 | #include <stdint.h> |
693c4692 | 25 | |
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26 | # if HAVE_OPENSSL_MD5 |
27 | # include <openssl/md5.h> | |
28 | # endif | |
29 | ||
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30 | #define MD5_DIGEST_SIZE 16 |
31 | #define MD5_BLOCK_SIZE 64 | |
32 | ||
33 | #ifndef __GNUC_PREREQ | |
34 | # if defined __GNUC__ && defined __GNUC_MINOR__ | |
35 | # define __GNUC_PREREQ(maj, min) \ | |
36 | ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) | |
37 | # else | |
38 | # define __GNUC_PREREQ(maj, min) 0 | |
39 | # endif | |
40 | #endif | |
41 | ||
42 | #ifndef __THROW | |
43 | # if defined __cplusplus && __GNUC_PREREQ (2,8) | |
44 | # define __THROW throw () | |
45 | # else | |
46 | # define __THROW | |
47 | # endif | |
48 | #endif | |
49 | ||
50 | #ifndef _LIBC | |
51 | # define __md5_buffer md5_buffer | |
52 | # define __md5_finish_ctx md5_finish_ctx | |
53 | # define __md5_init_ctx md5_init_ctx | |
54 | # define __md5_process_block md5_process_block | |
55 | # define __md5_process_bytes md5_process_bytes | |
56 | # define __md5_read_ctx md5_read_ctx | |
57 | # define __md5_stream md5_stream | |
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58 | #endif |
59 | ||
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60 | # ifdef __cplusplus |
61 | extern "C" { | |
62 | # endif | |
63 | ||
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64 | # if HAVE_OPENSSL_MD5 |
65 | # define GL_OPENSSL_NAME 5 | |
66 | # include "gl_openssl.h" | |
67 | # else | |
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68 | /* Structure to save state of computation between the single steps. */ |
69 | struct md5_ctx | |
70 | { | |
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71 | uint32_t A; |
72 | uint32_t B; | |
73 | uint32_t C; | |
74 | uint32_t D; | |
75 | ||
76 | uint32_t total[2]; | |
77 | uint32_t buflen; | |
78 | uint32_t buffer[32]; | |
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79 | }; |
80 | ||
81 | /* | |
82 | * The following three functions are build up the low level used in | |
caf8a9b2 | 83 | * the functions 'md5_stream' and 'md5_buffer'. |
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84 | */ |
85 | ||
86 | /* Initialize structure containing state of computation. | |
87 | (RFC 1321, 3.3: Step 3) */ | |
942f733f | 88 | extern void __md5_init_ctx (struct md5_ctx *ctx) __THROW; |
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89 | |
90 | /* Starting with the result of former calls of this function (or the | |
91 | initialization function update the context for the next LEN bytes | |
92 | starting at BUFFER. | |
93 | It is necessary that LEN is a multiple of 64!!! */ | |
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94 | extern void __md5_process_block (const void *buffer, size_t len, |
95 | struct md5_ctx *ctx) __THROW; | |
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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 NOT required that LEN is a multiple of 64. */ | |
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101 | extern void __md5_process_bytes (const void *buffer, size_t len, |
102 | struct md5_ctx *ctx) __THROW; | |
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103 | |
104 | /* Process the remaining bytes in the buffer and put result from CTX | |
105 | in first 16 bytes following RESBUF. The result is always in little | |
106 | endian byte order, so that a byte-wise output yields to the wanted | |
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107 | ASCII representation of the message digest. */ |
108 | extern void *__md5_finish_ctx (struct md5_ctx *ctx, void *resbuf) __THROW; | |
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109 | |
110 | ||
111 | /* Put result from CTX in first 16 bytes following RESBUF. The result is | |
112 | always in little endian byte order, so that a byte-wise output yields | |
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113 | to the wanted ASCII representation of the message digest. */ |
114 | extern void *__md5_read_ctx (const struct md5_ctx *ctx, void *resbuf) __THROW; | |
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115 | |
116 | ||
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117 | /* Compute MD5 message digest for LEN bytes beginning at BUFFER. The |
118 | result is always in little endian byte order, so that a byte-wise | |
119 | output yields to the wanted ASCII representation of the message | |
120 | digest. */ | |
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121 | extern void *__md5_buffer (const char *buffer, size_t len, |
122 | void *resblock) __THROW; | |
123 | ||
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124 | # endif |
125 | /* Compute MD5 message digest for bytes read from STREAM. The | |
126 | resulting message digest number will be written into the 16 bytes | |
127 | beginning at RESBLOCK. */ | |
128 | extern int __md5_stream (FILE *stream, void *resblock) __THROW; | |
129 | ||
130 | ||
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131 | # ifdef __cplusplus |
132 | } | |
133 | # endif | |
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134 | |
135 | #endif /* md5.h */ |