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Static buffers: Provide new rotating static buffer macros
[secnet] / md5.h
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1/*
2 * This is the header file for the MD5 message-digest algorithm.
3 * The algorithm is due to Ron Rivest. This code was
4 * written by Colin Plumb in 1993, no copyright is claimed.
5 * This code is in the public domain; do with it what you wish.
6 *
7 * Equivalent code is available from RSA Data Security, Inc.
8 * This code has been tested against that, and is equivalent,
9 * except that you don't need to include two pages of legalese
10 * with every copy.
11 *
12 * To compute the message digest of a chunk of bytes, declare an
13 * MD5Context structure, pass it to MD5Init, call MD5Update as
14 * needed on buffers full of bytes, and then call MD5Final, which
15 * will fill a supplied 16-byte array with the digest.
16 *
17 * Changed so as no longer to depend on Colin Plumb's `usual.h'
18 * header definitions; now uses stuff from dpkg's config.h
19 * - Ian Jackson <ijackson@nyx.cs.du.edu>.
20 * Still in the public domain.
21 */
22
23#ifndef MD5_H
24#define MD5_H
25
26#define md5byte unsigned char
27
28struct MD5Context {
29 uint32_t buf[4];
30 uint32_t bytes[2];
31 uint32_t in[16];
32};
33
34static void MD5Init(struct MD5Context *context);
35static void MD5Update(struct MD5Context *context,
36 md5byte const *buf, unsigned len);
37static void MD5Final(unsigned char digest[16], struct MD5Context *context);
38static void MD5Transform(uint32_t buf[4], uint32_t const in[16]);
39
40#endif /* !MD5_H */