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13c3daa4 LL |
1 | /* Declarations of functions and data types used for SHA1 sum |
2 | library functions. | |
ba318903 | 3 | Copyright (C) 2000-2001, 2003, 2005-2006, 2008-2014 Free Software |
13c3daa4 LL |
4 | 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 | |
8 | Free Software Foundation; either version 3, or (at your option) any | |
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 | |
caf8a9b2 | 17 | along with this program; if not, see <http://www.gnu.org/licenses/>. */ |
13c3daa4 LL |
18 | |
19 | #ifndef SHA1_H | |
20 | # define SHA1_H 1 | |
21 | ||
22 | # include <stdio.h> | |
23 | # include <stdint.h> | |
24 | ||
e9551b12 PE |
25 | # if HAVE_OPENSSL_SHA1 |
26 | # include <openssl/sha.h> | |
27 | # endif | |
28 | ||
13c3daa4 LL |
29 | # ifdef __cplusplus |
30 | extern "C" { | |
31 | # endif | |
32 | ||
33 | #define SHA1_DIGEST_SIZE 20 | |
34 | ||
e9551b12 PE |
35 | # if HAVE_OPENSSL_SHA1 |
36 | # define GL_OPENSSL_NAME 1 | |
37 | # include "gl_openssl.h" | |
38 | # else | |
13c3daa4 LL |
39 | /* Structure to save state of computation between the single steps. */ |
40 | struct sha1_ctx | |
41 | { | |
42 | uint32_t A; | |
43 | uint32_t B; | |
44 | uint32_t C; | |
45 | uint32_t D; | |
46 | uint32_t E; | |
47 | ||
48 | uint32_t total[2]; | |
49 | uint32_t buflen; | |
50 | uint32_t buffer[32]; | |
51 | }; | |
52 | ||
13c3daa4 LL |
53 | /* Initialize structure containing state of computation. */ |
54 | extern void sha1_init_ctx (struct sha1_ctx *ctx); | |
55 | ||
56 | /* Starting with the result of former calls of this function (or the | |
57 | initialization function update the context for the next LEN bytes | |
58 | starting at BUFFER. | |
59 | It is necessary that LEN is a multiple of 64!!! */ | |
60 | extern void sha1_process_block (const void *buffer, size_t len, | |
61 | struct sha1_ctx *ctx); | |
62 | ||
63 | /* Starting with the result of former calls of this function (or the | |
64 | initialization function update the context for the next LEN bytes | |
65 | starting at BUFFER. | |
66 | It is NOT required that LEN is a multiple of 64. */ | |
67 | extern void sha1_process_bytes (const void *buffer, size_t len, | |
68 | struct sha1_ctx *ctx); | |
69 | ||
70 | /* Process the remaining bytes in the buffer and put result from CTX | |
71 | in first 20 bytes following RESBUF. The result is always in little | |
72 | endian byte order, so that a byte-wise output yields to the wanted | |
73 | ASCII representation of the message digest. */ | |
74 | extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf); | |
75 | ||
76 | ||
77 | /* Put result from CTX in first 20 bytes following RESBUF. The result is | |
78 | always in little endian byte order, so that a byte-wise output yields | |
79 | to the wanted ASCII representation of the message digest. */ | |
80 | extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf); | |
81 | ||
82 | ||
13c3daa4 LL |
83 | /* Compute SHA1 message digest for LEN bytes beginning at BUFFER. The |
84 | result is always in little endian byte order, so that a byte-wise | |
85 | output yields to the wanted ASCII representation of the message | |
86 | digest. */ | |
87 | extern void *sha1_buffer (const char *buffer, size_t len, void *resblock); | |
88 | ||
e9551b12 PE |
89 | # endif |
90 | /* Compute SHA1 message digest for bytes read from STREAM. The | |
91 | resulting message digest number will be written into the 20 bytes | |
92 | beginning at RESBLOCK. */ | |
93 | extern int sha1_stream (FILE *stream, void *resblock); | |
94 | ||
95 | ||
13c3daa4 LL |
96 | # ifdef __cplusplus |
97 | } | |
98 | # endif | |
99 | ||
100 | #endif |