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md5.h
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_ */