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1/* $OpenBSD: md5.h,v 1.17 2012/12/05 23:19:57 deraadt Exp $ */
2
3/*
4 * This code implements the MD5 message-digest algorithm.
5 * The algorithm is due to Ron Rivest. This code was
6 * written by Colin Plumb in 1993, no copyright is claimed.
7 * This code is in the public domain; do with it what you wish.
8 *
9 * Equivalent code is available from RSA Data Security, Inc.
10 * This code has been tested against that, and is equivalent,
11 * except that you don't need to include two pages of legalese
12 * with every copy.
13 */
14
15#ifndef _MD5_H_
16#define _MD5_H_
17
18#define MD5_BLOCK_LENGTH 64
19#define MD5_DIGEST_LENGTH 16
20#define MD5_DIGEST_STRING_LENGTH (MD5_DIGEST_LENGTH * 2 + 1)
21
22typedef struct MD5Context {
23 u_int32_t state[4]; /* state */
24 u_int64_t count; /* number of bits, mod 2^64 */
25 u_int8_t buffer[MD5_BLOCK_LENGTH]; /* input buffer */
26} MD5_CTX;
27
28__BEGIN_DECLS
29void MD5Init(MD5_CTX *);
30void MD5Update(MD5_CTX *, const u_int8_t *, size_t)
31 __attribute__((__bounded__(__string__,2,3)));
32void MD5Pad(MD5_CTX *);
33void MD5Final(u_int8_t [MD5_DIGEST_LENGTH], MD5_CTX *)
34 __attribute__((__bounded__(__minbytes__,1,MD5_DIGEST_LENGTH)));
35void MD5Transform(u_int32_t [4], const u_int8_t [MD5_BLOCK_LENGTH])
36 __attribute__((__bounded__(__minbytes__,1,4)))
37 __attribute__((__bounded__(__minbytes__,2,MD5_BLOCK_LENGTH)));
38char *MD5End(MD5_CTX *, char *)
39 __attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH)));
40char *MD5File(const char *, char *)
41 __attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH)));
42char *MD5FileChunk(const char *, char *, off_t, off_t)
43 __attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH)));
44char *MD5Data(const u_int8_t *, size_t, char *)
45 __attribute__((__bounded__(__string__,1,2)))
46 __attribute__((__bounded__(__minbytes__,3,MD5_DIGEST_STRING_LENGTH)));
47__END_DECLS
48
49#endif /* _MD5_H_ */