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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
19  *  - Ian Jackson <ian@chiark.greenend.org.uk>.
20  * Still in the public domain.
21  */
22 
23 #ifndef MD5_UTILS_H_
24 #define MD5_UTILS_H_
25 
26 #ifdef __cplusplus
27 extern "C" {
28 #endif
29 
30 #define md5byte unsigned char
31 #define UWORD32 unsigned int
32 
33 typedef struct MD5Context MD5Context;
34 struct MD5Context {
35   UWORD32 buf[4];
36   UWORD32 bytes[2];
37   UWORD32 in[16];
38 };
39 
40 void MD5Init(struct MD5Context *context);
41 void MD5Update(struct MD5Context *context, md5byte const *buf, unsigned len);
42 void MD5Final(unsigned char digest[16], struct MD5Context *context);
43 void MD5Transform(UWORD32 buf[4], UWORD32 const in[16]);
44 
45 #ifdef __cplusplus
46 }  // extern "C"
47 #endif
48 
49 #endif  // MD5_UTILS_H_
50