1/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved.
2 *
3 * This package is an SSL implementation written
4 * by Eric Young (eay@cryptsoft.com).
5 * The implementation was written so as to conform with Netscapes SSL.
6 *
7 * This library is free for commercial and non-commercial use as long as
8 * the following conditions are aheared to.  The following conditions
9 * apply to all code found in this distribution, be it the RC4, RSA,
10 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
11 * included with this distribution is covered by the same copyright terms
12 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
13 *
14 * Copyright remains Eric Young's, and as such any Copyright notices in
15 * the code are not to be removed.
16 * If this package is used in a product, Eric Young should be given attribution
17 * as the author of the parts of the library used.
18 * This can be in the form of a textual message at program startup or
19 * in documentation (online or textual) provided with the package.
20 *
21 * Redistribution and use in source and binary forms, with or without
22 * modification, are permitted provided that the following conditions
23 * are met:
24 * 1. Redistributions of source code must retain the copyright
25 *    notice, this list of conditions and the following disclaimer.
26 * 2. Redistributions in binary form must reproduce the above copyright
27 *    notice, this list of conditions and the following disclaimer in the
28 *    documentation and/or other materials provided with the distribution.
29 * 3. All advertising materials mentioning features or use of this software
30 *    must display the following acknowledgement:
31 *    "This product includes cryptographic software written by
32 *     Eric Young (eay@cryptsoft.com)"
33 *    The word 'cryptographic' can be left out if the rouines from the library
34 *    being used are not cryptographic related :-).
35 * 4. If you include any Windows specific code (or a derivative thereof) from
36 *    the apps directory (application code) you must include an acknowledgement:
37 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
40 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
42 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
43 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
44 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
45 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
47 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
48 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
49 * SUCH DAMAGE.
50 *
51 * The licence and distribution terms for any publically available version or
52 * derivative of this code cannot be changed.  i.e. this code cannot simply be
53 * copied and put under another distribution licence
54 * [including the GNU Public Licence.] */
55
56#ifndef OPENSSL_HEADER_MD5_H
57#define OPENSSL_HEADER_MD5_H
58
59#include <openssl/base.h>
60
61#if defined(__cplusplus)
62extern "C" {
63#endif
64
65
66/* MD5. */
67
68
69/* MD5_CBLOCK is the block size of MD5. */
70#define MD5_CBLOCK 64
71
72/* MD5_DIGEST_LENGTH is the length of an MD5 digest. */
73#define MD5_DIGEST_LENGTH 16
74
75/* MD51_Init initialises |md5| and returns one. */
76OPENSSL_EXPORT int MD5_Init(MD5_CTX *md5);
77
78/* MD5_Update adds |len| bytes from |data| to |md5| and returns one. */
79OPENSSL_EXPORT int MD5_Update(MD5_CTX *md5, const void *data, size_t len);
80
81/* MD5_Final adds the final padding to |md5| and writes the resulting digest to
82 * |md|, which must have at least |MD5_DIGEST_LENGTH| bytes of space. It
83 * returns one. */
84OPENSSL_EXPORT int MD5_Final(uint8_t *md, MD5_CTX *md5);
85
86/* MD5 writes the digest of |len| bytes from |data| to |out| and returns |out|.
87 * There must be at least |MD5_DIGEST_LENGTH| bytes of space in |out|. */
88OPENSSL_EXPORT uint8_t *MD5(const uint8_t *data, size_t len, uint8_t *out);
89
90/* MD5_Transform is a low-level function that performs a single, MD5 block
91 * transformation using the state from |md5| and 64 bytes from |block|. */
92OPENSSL_EXPORT void MD5_Transform(MD5_CTX *md5, const uint8_t *block);
93
94struct md5_state_st {
95  uint32_t A, B, C, D;
96  uint32_t Nl, Nh;
97  uint32_t data[16];
98  unsigned int num;
99};
100
101
102#if defined(__cplusplus)
103}  /* extern C */
104#endif
105
106#endif  /* OPENSSL_HEADER_MD5_H */
107