1/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57#ifndef OPENSSL_HEADER_MD5_H
58#define OPENSSL_HEADER_MD5_H
59
60#include <openssl/base.h>
61
62#if defined(__cplusplus)
63extern "C" {
64#endif
65
66
67// MD5.
68
69
70// MD5_CBLOCK is the block size of MD5.
71#define MD5_CBLOCK 64
72
73// MD5_DIGEST_LENGTH is the length of an MD5 digest.
74#define MD5_DIGEST_LENGTH 16
75
76// MD5_Init initialises |md5| and returns one.
77OPENSSL_EXPORT int MD5_Init(MD5_CTX *md5);
78
79// MD5_Update adds |len| bytes from |data| to |md5| and returns one.
80OPENSSL_EXPORT int MD5_Update(MD5_CTX *md5, const void *data, size_t len);
81
82// MD5_Final adds the final padding to |md5| and writes the resulting digest to
83// |out|, which must have at least |MD5_DIGEST_LENGTH| bytes of space. It
84// returns one.
85OPENSSL_EXPORT int MD5_Final(uint8_t out[MD5_DIGEST_LENGTH], MD5_CTX *md5);
86
87// MD5 writes the digest of |len| bytes from |data| to |out| and returns |out|.
88// There must be at least |MD5_DIGEST_LENGTH| bytes of space in |out|.
89OPENSSL_EXPORT uint8_t *MD5(const uint8_t *data, size_t len,
90 uint8_t out[MD5_DIGEST_LENGTH]);
91
92// MD5_Transform is a low-level function that performs a single, MD5 block
93// transformation using the state from |md5| and 64 bytes from |block|.
94OPENSSL_EXPORT void MD5_Transform(MD5_CTX *md5,
95 const uint8_t block[MD5_CBLOCK]);
96
97struct md5_state_st {
98 uint32_t h[4];
99 uint32_t Nl, Nh;
100 uint8_t data[MD5_CBLOCK];
101 unsigned num;
102};
103
104
105#if defined(__cplusplus)
106} // extern C
107#endif
108
109#endif // OPENSSL_HEADER_MD5_H
110