Initial vendor import of ldns-1.6.4 into contrib.
[dragonfly.git] / contrib / ldns / ldns / sha2.h
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1/*
2 * FILE: sha2.h
3 * AUTHOR: Aaron D. Gifford - http://www.aarongifford.com/
4 *
5 * Copyright (c) 2000-2001, Aaron D. Gifford
6 * All rights reserved.
7 *
8 * Modified by Jelte Jansen to fit in ldns, and not clash with any
9 * system-defined SHA code.
10 * Changes:
11 * - Renamed (external) functions and constants to fit ldns style
12 * - Removed uintXX vs. u_intXX smartness, since ldns needs uintXX
13 * anyway
14 * - BYTE ORDER check replaced by simple ifdef as defined or not by
15 * configure.ac
16 * - Removed _End and _Data functions
17 * - Added ldns_shaX(data, len, digest) functions
18 *
19 * Redistribution and use in source and binary forms, with or without
20 * modification, are permitted provided that the following conditions
21 * are met:
22 * 1. Redistributions of source code must retain the above copyright
23 * notice, this list of conditions and the following disclaimer.
24 * 2. Redistributions in binary form must reproduce the above copyright
25 * notice, this list of conditions and the following disclaimer in the
26 * documentation and/or other materials provided with the distribution.
27 * 3. Neither the name of the copyright holder nor the names of contributors
28 * may be used to endorse or promote products derived from this software
29 * without specific prior written permission.
30 *
31 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
32 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
33 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
34 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
35 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
39 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
40 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 * SUCH DAMAGE.
42 *
43 * $Id: sha2.h,v 1.1 2001/11/08 00:02:01 adg Exp adg $
44 */
45
46#ifndef __LDNS_SHA2_H__
47#define __LDNS_SHA2_H__
48
49#ifdef __cplusplus
50extern "C" {
51#endif
52
53
54/*
55 * Import u_intXX_t size_t type definitions from system headers. You
56 * may need to change this, or define these things yourself in this
57 * file.
58 *
59 * (include ldns/config.h so HAVE_INTTYPES is defined (or not, depending
60 * on the system))
61 */
62#include <sys/types.h>
63
64#ifdef HAVE_INTTYPES_H
65
66#include <inttypes.h>
67
68#endif /* HAVE_INTTYPES_H */
69
70
71/*** SHA-256/384/512 Various Length Definitions ***********************/
72#define LDNS_SHA256_BLOCK_LENGTH 64
73#define LDNS_SHA256_DIGEST_LENGTH 32
74#define LDNS_SHA256_DIGEST_STRING_LENGTH (LDNS_SHA256_DIGEST_LENGTH * 2 + 1)
75#define LDNS_SHA384_BLOCK_LENGTH 128
76#define LDNS_SHA384_DIGEST_LENGTH 48
77#define LDNS_SHA384_DIGEST_STRING_LENGTH (LDNS_SHA384_DIGEST_LENGTH * 2 + 1)
78#define LDNS_SHA512_BLOCK_LENGTH 128
79#define LDNS_SHA512_DIGEST_LENGTH 64
80#define LDNS_SHA512_DIGEST_STRING_LENGTH (LDNS_SHA512_DIGEST_LENGTH * 2 + 1)
81
82
83/*** SHA-256/384/512 Context Structures *******************************/
84
85typedef struct _ldns_sha256_CTX {
86 uint32_t state[8];
87 uint64_t bitcount;
88 uint8_t buffer[LDNS_SHA256_BLOCK_LENGTH];
89} ldns_sha256_CTX;
90typedef struct _ldns_sha512_CTX {
91 uint64_t state[8];
92 uint64_t bitcount[2];
93 uint8_t buffer[LDNS_SHA512_BLOCK_LENGTH];
94} ldns_sha512_CTX;
95
96typedef ldns_sha512_CTX ldns_sha384_CTX;
97
98
99/*** SHA-256/384/512 Function Prototypes ******************************/
100void ldns_sha256_init(ldns_sha256_CTX *);
101void ldns_sha256_update(ldns_sha256_CTX*, const uint8_t*, size_t);
102void ldns_sha256_final(uint8_t[LDNS_SHA256_DIGEST_LENGTH], ldns_sha256_CTX*);
103
104void ldns_sha384_init(ldns_sha384_CTX*);
105void ldns_sha384_update(ldns_sha384_CTX*, const uint8_t*, size_t);
106void ldns_sha384_final(uint8_t[LDNS_SHA384_DIGEST_LENGTH], ldns_sha384_CTX*);
107
108void ldns_sha512_init(ldns_sha512_CTX*);
109void ldns_sha512_update(ldns_sha512_CTX*, const uint8_t*, size_t);
110void ldns_sha512_final(uint8_t[LDNS_SHA512_DIGEST_LENGTH], ldns_sha512_CTX*);
111
112/**
113 * Convenience function to digest a fixed block of data at once.
114 *
115 * \param[in] data the data to digest
116 * \param[in] data_len the length of data in bytes
117 * \param[out] digest the length of data in bytes
118 * This pointer MUST have LDNS_SHA256_DIGEST_LENGTH bytes
119 * available
120 * \return the SHA1 digest of the given data
121 */
122unsigned char *ldns_sha256(unsigned char *data, unsigned int data_len, unsigned char *digest);
123
124/**
125 * Convenience function to digest a fixed block of data at once.
126 *
127 * \param[in] data the data to digest
128 * \param[in] data_len the length of data in bytes
129 * \param[out] digest the length of data in bytes
130 * This pointer MUST have LDNS_SHA384_DIGEST_LENGTH bytes
131 * available
132 * \return the SHA1 digest of the given data
133 */
134unsigned char *ldns_sha384(unsigned char *data, unsigned int data_len, unsigned char *digest);
135
136/**
137 * Convenience function to digest a fixed block of data at once.
138 *
139 * \param[in] data the data to digest
140 * \param[in] data_len the length of data in bytes
141 * \param[out] digest the length of data in bytes
142 * This pointer MUST have LDNS_SHA512_DIGEST_LENGTH bytes
143 * available
144 * \return the SHA1 digest of the given data
145 */
146unsigned char *ldns_sha512(unsigned char *data, unsigned int data_len, unsigned char *digest);
147
148#ifdef __cplusplus
149}
150#endif /* __cplusplus */
151
152#endif /* __LDNS_SHA2_H__ */