xref: /openssh-portable/openbsd-compat/md5.h (revision 81bfbd0b)
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 #ifndef WITH_OPENSSL
19 
20 #define	MD5_BLOCK_LENGTH		64
21 #define	MD5_DIGEST_LENGTH		16
22 #define	MD5_DIGEST_STRING_LENGTH	(MD5_DIGEST_LENGTH * 2 + 1)
23 
24 typedef struct MD5Context {
25 	u_int32_t state[4];			/* state */
26 	u_int64_t count;			/* number of bits, mod 2^64 */
27 	u_int8_t buffer[MD5_BLOCK_LENGTH];	/* input buffer */
28 } MD5_CTX;
29 
30 void	 MD5Init(MD5_CTX *);
31 void	 MD5Update(MD5_CTX *, const u_int8_t *, size_t)
32 		__attribute__((__bounded__(__string__,2,3)));
33 void	 MD5Pad(MD5_CTX *);
34 void	 MD5Final(u_int8_t [MD5_DIGEST_LENGTH], MD5_CTX *)
35 		__attribute__((__bounded__(__minbytes__,1,MD5_DIGEST_LENGTH)));
36 void	 MD5Transform(u_int32_t [4], const u_int8_t [MD5_BLOCK_LENGTH])
37 		__attribute__((__bounded__(__minbytes__,1,4)))
38 		__attribute__((__bounded__(__minbytes__,2,MD5_BLOCK_LENGTH)));
39 char	*MD5End(MD5_CTX *, char *)
40 		__attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH)));
41 char	*MD5File(const char *, char *)
42 		__attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH)));
43 char	*MD5FileChunk(const char *, char *, off_t, off_t)
44 		__attribute__((__bounded__(__minbytes__,2,MD5_DIGEST_STRING_LENGTH)));
45 char	*MD5Data(const u_int8_t *, size_t, char *)
46 		__attribute__((__bounded__(__string__,1,2)))
47 		__attribute__((__bounded__(__minbytes__,3,MD5_DIGEST_STRING_LENGTH)));
48 
49 #endif /* !WITH_OPENSSL */
50 
51 #endif /* _MD5_H_ */
52