1/* $OpenBSD: sha2.h,v 1.6 2004/06/22 01:57:30 jfb Exp $ */
2
3/*
4 * FILE: sha2.h
5 * AUTHOR: Aaron D. Gifford <me@aarongifford.com>
6 *
7 * Copyright (c) 2000-2001, Aaron D. Gifford
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the copyright holder nor the names of contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $From: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
35 */
36
37#ifndef _SHA2_H
38#define _SHA2_H
39
40#include <sys/types.h>
41
42#include <stdint.h>
43
44/*** SHA-256/384/512 Various Length Definitions ***********************/
45#define SHA256_BLOCK_LENGTH 64
46#define SHA256_DIGEST_LENGTH 32
47#define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
48#define SHA384_BLOCK_LENGTH 128
49#define SHA384_DIGEST_LENGTH 48
50#define SHA384_DIGEST_STRING_LENGTH (SHA384_DIGEST_LENGTH * 2 + 1)
51#define SHA512_BLOCK_LENGTH 128
52#define SHA512_DIGEST_LENGTH 64
53#define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1)
54
55
56/*** SHA-256/384/512 Context Structure *******************************/
57typedef struct _SHA2_CTX {
58 union {
59 uint32_t st32[8];
60 uint64_t st64[8];
61 } state;
62 uint64_t bitcount[2];
63 uint8_t buffer[SHA512_BLOCK_LENGTH];
64} SHA2_CTX;
65
66#ifdef __cplusplus
67extern "C" {
68#endif
69
70void SHA256Init(SHA2_CTX *);
71void SHA256Transform(uint32_t state[8], const uint8_t [SHA256_BLOCK_LENGTH]);
72void SHA256Update(SHA2_CTX *, const uint8_t *, size_t);
73void SHA256Pad(SHA2_CTX *);
74void SHA256Final(uint8_t [SHA256_DIGEST_LENGTH], SHA2_CTX *);
75char *SHA256End(SHA2_CTX *, char *);
76char *SHA256File(const char *, char *);
77char *SHA256FileChunk(const char *, char *, off_t, off_t);
78char *SHA256Data(const uint8_t *, size_t, char *);
79
80void SHA384Init(SHA2_CTX *);
81void SHA384Transform(uint64_t state[8], const uint8_t [SHA384_BLOCK_LENGTH]);
82void SHA384Update(SHA2_CTX *, const uint8_t *, size_t);
83void SHA384Pad(SHA2_CTX *);
84void SHA384Final(uint8_t [SHA384_DIGEST_LENGTH], SHA2_CTX *);
85char *SHA384End(SHA2_CTX *, char *);
86char *SHA384File(const char *, char *);
87char *SHA384FileChunk(const char *, char *, off_t, off_t);
88char *SHA384Data(const uint8_t *, size_t, char *);
89
90void SHA512Init(SHA2_CTX *);
91void SHA512Transform(uint64_t state[8], const uint8_t [SHA512_BLOCK_LENGTH]);
92void SHA512Update(SHA2_CTX *, const uint8_t *, size_t);
93void SHA512Pad(SHA2_CTX *);
94void SHA512Final(uint8_t [SHA512_DIGEST_LENGTH], SHA2_CTX *);
95char *SHA512End(SHA2_CTX *, char *);
96char *SHA512File(const char *, char *);
97char *SHA512FileChunk(const char *, char *, off_t, off_t);
98char *SHA512Data(const uint8_t *, size_t, char *);
99
100#ifdef __cplusplus
101}
102#endif
103
104#endif /* _SHA2_H */
105

source code of include/sha2.h