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1 | /* Declarations of functions and data types used for SHA1 sum |
2 | library functions. | |
60b8eb31 NC |
3 | Copyright (C) 2007 Free Software Foundation, Inc. |
4 | ||
5 | This file is part of the GNU Binutils. | |
5586bca1 RM |
6 | |
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 | |
60b8eb31 | 9 | Free Software Foundation; either version 3, or (at your option) any |
5586bca1 RM |
10 | later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software Foundation, | |
19 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | |
20 | ||
21 | #ifndef SHA1_H | |
60b8eb31 | 22 | #define SHA1_H 1 |
5586bca1 | 23 | |
60b8eb31 | 24 | #include <stdio.h> |
fe8b7f87 | 25 | #include "bfd_stdint.h" |
5586bca1 RM |
26 | |
27 | /* Structure to save state of computation between the single steps. */ | |
28 | struct sha1_ctx | |
29 | { | |
30 | uint32_t A; | |
31 | uint32_t B; | |
32 | uint32_t C; | |
33 | uint32_t D; | |
34 | uint32_t E; | |
35 | ||
36 | uint32_t total[2]; | |
37 | uint32_t buflen; | |
38 | uint32_t buffer[32]; | |
39 | }; | |
40 | ||
41 | ||
42 | /* Initialize structure containing state of computation. */ | |
43 | extern void sha1_init_ctx (struct sha1_ctx *ctx); | |
44 | ||
45 | /* Starting with the result of former calls of this function (or the | |
46 | initialization function update the context for the next LEN bytes | |
47 | starting at BUFFER. | |
60b8eb31 | 48 | It is necessary that LEN is a multiple of 64! */ |
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49 | extern void sha1_process_block (const void *buffer, size_t len, |
50 | struct sha1_ctx *ctx); | |
51 | ||
52 | /* Starting with the result of former calls of this function (or the | |
53 | initialization function update the context for the next LEN bytes | |
54 | starting at BUFFER. | |
55 | It is NOT required that LEN is a multiple of 64. */ | |
56 | extern void sha1_process_bytes (const void *buffer, size_t len, | |
57 | struct sha1_ctx *ctx); | |
58 | ||
59 | /* Process the remaining bytes in the buffer and put result from CTX | |
60 | in first 20 bytes following RESBUF. The result is always in little | |
61 | endian byte order, so that a byte-wise output yields to the wanted | |
62 | ASCII representation of the message digest. | |
63 | ||
64 | IMPORTANT: On some systems it is required that RESBUF be correctly | |
65 | aligned for a 32 bits value. */ | |
66 | extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf); | |
67 | ||
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68 | /* Put result from CTX in first 20 bytes following RESBUF. The result is |
69 | always in little endian byte order, so that a byte-wise output yields | |
70 | to the wanted ASCII representation of the message digest. | |
71 | ||
72 | IMPORTANT: On some systems it is required that RESBUF is correctly | |
73 | aligned for a 32 bits value. */ | |
74 | extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf); | |
75 | ||
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76 | /* Compute SHA1 message digest for bytes read from STREAM. The |
77 | resulting message digest number will be written into the 20 bytes | |
78 | beginning at RESBLOCK. */ | |
79 | extern int sha1_stream (FILE *stream, void *resblock); | |
80 | ||
81 | /* Compute SHA1 message digest for LEN bytes beginning at BUFFER. The | |
82 | result is always in little endian byte order, so that a byte-wise | |
83 | output yields to the wanted ASCII representation of the message | |
84 | digest. */ | |
85 | extern void *sha1_buffer (const char *buffer, size_t len, void *resblock); | |
86 | ||
60b8eb31 | 87 | #endif /* SHA1_H */ |