summaryrefslogtreecommitdiffstats
path: root/gl/sha1.h
diff options
context:
space:
mode:
Diffstat (limited to 'gl/sha1.h')
-rw-r--r--gl/sha1.h66
1 files changed, 45 insertions, 21 deletions
diff --git a/gl/sha1.h b/gl/sha1.h
index ddd386f..5a58b56 100644
--- a/gl/sha1.h
+++ b/gl/sha1.h
@@ -1,20 +1,20 @@
1/* Declarations of functions and data types used for SHA1 sum 1/* Declarations of functions and data types used for SHA1 sum
2 library functions. 2 library functions.
3 Copyright (C) 2000-2001, 2003, 2005-2006, 2008-2013 Free Software 3 Copyright (C) 2000-2001, 2003, 2005-2006, 2008-2023 Free Software
4 Foundation, Inc. 4 Foundation, Inc.
5 5
6 This program is free software; you can redistribute it and/or modify it 6 This file is free software: you can redistribute it and/or modify
7 under the terms of the GNU General Public License as published by the 7 it under the terms of the GNU Lesser General Public License as
8 Free Software Foundation; either version 3, or (at your option) any 8 published by the Free Software Foundation; either version 2.1 of the
9 later version. 9 License, or (at your option) any later version.
10 10
11 This program is distributed in the hope that it will be useful, 11 This file is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details. 14 GNU Lesser General Public License for more details.
15 15
16 You should have received a copy of the GNU General Public License 16 You should have received a copy of the GNU Lesser General Public License
17 along with this program; if not, see <http://www.gnu.org/licenses/>. */ 17 along with this program. If not, see <https://www.gnu.org/licenses/>. */
18 18
19#ifndef SHA1_H 19#ifndef SHA1_H
20# define SHA1_H 1 20# define SHA1_H 1
@@ -22,12 +22,23 @@
22# include <stdio.h> 22# include <stdio.h>
23# include <stdint.h> 23# include <stdint.h>
24 24
25# if HAVE_OPENSSL_SHA1
26# ifndef OPENSSL_API_COMPAT
27# define OPENSSL_API_COMPAT 0x10101000L /* FIXME: Use OpenSSL 1.1+ API. */
28# endif
29# include <openssl/sha.h>
30# endif
31
25# ifdef __cplusplus 32# ifdef __cplusplus
26extern "C" { 33extern "C" {
27# endif 34# endif
28 35
29#define SHA1_DIGEST_SIZE 20 36# define SHA1_DIGEST_SIZE 20
30 37
38# if HAVE_OPENSSL_SHA1
39# define GL_OPENSSL_NAME 1
40# include "gl_openssl.h"
41# else
31/* Structure to save state of computation between the single steps. */ 42/* Structure to save state of computation between the single steps. */
32struct sha1_ctx 43struct sha1_ctx
33{ 44{
@@ -38,11 +49,10 @@ struct sha1_ctx
38 uint32_t E; 49 uint32_t E;
39 50
40 uint32_t total[2]; 51 uint32_t total[2];
41 uint32_t buflen; 52 uint32_t buflen; /* ≥ 0, ≤ 128 */
42 uint32_t buffer[32]; 53 uint32_t buffer[32]; /* 128 bytes; the first buflen bytes are in use */
43}; 54};
44 55
45
46/* Initialize structure containing state of computation. */ 56/* Initialize structure containing state of computation. */
47extern void sha1_init_ctx (struct sha1_ctx *ctx); 57extern void sha1_init_ctx (struct sha1_ctx *ctx);
48 58
@@ -64,28 +74,42 @@ extern void sha1_process_bytes (const void *buffer, size_t len,
64 in first 20 bytes following RESBUF. The result is always in little 74 in first 20 bytes following RESBUF. The result is always in little
65 endian byte order, so that a byte-wise output yields to the wanted 75 endian byte order, so that a byte-wise output yields to the wanted
66 ASCII representation of the message digest. */ 76 ASCII representation of the message digest. */
67extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf); 77extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *restrict resbuf);
68 78
69 79
70/* Put result from CTX in first 20 bytes following RESBUF. The result is 80/* Put result from CTX in first 20 bytes following RESBUF. The result is
71 always in little endian byte order, so that a byte-wise output yields 81 always in little endian byte order, so that a byte-wise output yields
72 to the wanted ASCII representation of the message digest. */ 82 to the wanted ASCII representation of the message digest. */
73extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf); 83extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *restrict resbuf);
74 84
75 85
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. */
79extern int sha1_stream (FILE *stream, void *resblock);
80
81/* Compute SHA1 message digest for LEN bytes beginning at BUFFER. The 86/* 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 87 result is always in little endian byte order, so that a byte-wise
83 output yields to the wanted ASCII representation of the message 88 output yields to the wanted ASCII representation of the message
84 digest. */ 89 digest. */
85extern void *sha1_buffer (const char *buffer, size_t len, void *resblock); 90extern void *sha1_buffer (const char *buffer, size_t len,
91 void *restrict resblock);
92
93# endif
94
95/* Compute SHA1 message digest for bytes read from STREAM.
96 STREAM is an open file stream. Regular files are handled more efficiently.
97 The contents of STREAM from its current position to its end will be read.
98 The case that the last operation on STREAM was an 'ungetc' is not supported.
99 The resulting message digest number will be written into the 20 bytes
100 beginning at RESBLOCK. */
101extern int sha1_stream (FILE *stream, void *resblock);
102
86 103
87# ifdef __cplusplus 104# ifdef __cplusplus
88} 105}
89# endif 106# endif
90 107
91#endif 108#endif
109
110/*
111 * Hey Emacs!
112 * Local Variables:
113 * coding: utf-8
114 * End:
115 */