1
2/*
3** ********************************************************************
4** md4.h -- Header file for implementation of                        **
5** MD4 Message Digest Algorithm                                      **
6** Updated: 2/13/90 by Ronald L. Rivest                              **
7** (C) 1990 RSA Data Security, Inc.                                  **
8** ********************************************************************
9*/
10
11#ifndef __P
12# if defined(__STDC__) || defined(__GNUC__)
13#  define __P(x) x
14# else
15#  define __P(x) ()
16# endif
17#endif
18
19
20/* MDstruct is the data structure for a message digest computation.
21*/
22typedef struct {
23	unsigned int buffer[4]; /* Holds 4-word result of MD computation */
24	unsigned char count[8]; /* Number of bits processed so far */
25	unsigned int done;      /* Nonzero means MD computation finished */
26} MD4_CTX;
27
28/* MD4Init(MD4_CTX *)
29** Initialize the MD4_CTX prepatory to doing a message digest
30** computation.
31*/
32extern void MD4Init __P((MD4_CTX *MD));
33
34/* MD4Update(MD,X,count)
35** Input: X -- a pointer to an array of unsigned characters.
36**        count -- the number of bits of X to use (an unsigned int).
37** Updates MD using the first "count" bits of X.
38** The array pointed to by X is not modified.
39** If count is not a multiple of 8, MD4Update uses high bits of
40** last byte.
41** This is the basic input routine for a user.
42** The routine terminates the MD computation when count < 512, so
43** every MD computation should end with one call to MD4Update with a
44** count less than 512.  Zero is OK for a count.
45*/
46extern void MD4Update __P((MD4_CTX *MD, unsigned char *X, unsigned int count));
47
48/* MD4Print(MD)
49** Prints message digest buffer MD as 32 hexadecimal digits.
50** Order is from low-order byte of buffer[0] to high-order byte
51** of buffer[3].
52** Each byte is printed with high-order hexadecimal digit first.
53*/
54extern void MD4Print __P((MD4_CTX *));
55
56/* MD4Final(buf, MD)
57** Returns message digest from MD and terminates the message
58** digest computation.
59*/
60extern void MD4Final __P((unsigned char *, MD4_CTX *));
61
62/*
63** End of md4.h
64****************************(cut)***********************************/
65