1/* -*- buffer-read-only: t -*- vi: set ro: */
2/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
3#line 1
4/* Declarations of functions and data types used for SHA1 sum
5   library functions.
6   Copyright (C) 2000, 2001, 2003, 2005, 2006, 2008, 2009, 2010 Free Software
7   Foundation, Inc.
8
9   This program is free software; you can redistribute it and/or modify it
10   under the terms of the GNU General Public License as published by the
11   Free Software Foundation; either version 3, or (at your option) any
12   later version.
13
14   This program is distributed in the hope that it will be useful,
15   but WITHOUT ANY WARRANTY; without even the implied warranty of
16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17   GNU General Public License for more details.
18
19   You should have received a copy of the GNU General Public License
20   along with this program; if not, write to the Free Software Foundation,
21   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
22
23#ifndef SHA1_H
24# define SHA1_H 1
25
26# include <stdio.h>
27# include <stdint.h>
28
29# ifdef __cplusplus
30extern "C" {
31# endif
32
33#define SHA1_DIGEST_SIZE 20
34
35/* Structure to save state of computation between the single steps.  */
36struct sha1_ctx
37{
38  uint32_t A;
39  uint32_t B;
40  uint32_t C;
41  uint32_t D;
42  uint32_t E;
43
44  uint32_t total[2];
45  uint32_t buflen;
46  uint32_t buffer[32];
47};
48
49
50/* Initialize structure containing state of computation. */
51extern void sha1_init_ctx (struct sha1_ctx *ctx);
52
53/* Starting with the result of former calls of this function (or the
54   initialization function update the context for the next LEN bytes
55   starting at BUFFER.
56   It is necessary that LEN is a multiple of 64!!! */
57extern void sha1_process_block (const void *buffer, size_t len,
58                                struct sha1_ctx *ctx);
59
60/* Starting with the result of former calls of this function (or the
61   initialization function update the context for the next LEN bytes
62   starting at BUFFER.
63   It is NOT required that LEN is a multiple of 64.  */
64extern void sha1_process_bytes (const void *buffer, size_t len,
65                                struct sha1_ctx *ctx);
66
67/* Process the remaining bytes in the buffer and put result from CTX
68   in first 20 bytes following RESBUF.  The result is always in little
69   endian byte order, so that a byte-wise output yields to the wanted
70   ASCII representation of the message digest.  */
71extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf);
72
73
74/* Put result from CTX in first 20 bytes following RESBUF.  The result is
75   always in little endian byte order, so that a byte-wise output yields
76   to the wanted ASCII representation of the message digest.  */
77extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf);
78
79
80/* Compute SHA1 message digest for bytes read from STREAM.  The
81   resulting message digest number will be written into the 20 bytes
82   beginning at RESBLOCK.  */
83extern int sha1_stream (FILE *stream, void *resblock);
84
85/* Compute SHA1 message digest for LEN bytes beginning at BUFFER.  The
86   result is always in little endian byte order, so that a byte-wise
87   output yields to the wanted ASCII representation of the message
88   digest.  */
89extern void *sha1_buffer (const char *buffer, size_t len, void *resblock);
90
91# ifdef __cplusplus
92}
93# endif
94
95#endif
96