111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
#ifndef __MD4_H__
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#define __MD4_H__
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#ifndef RSA32API
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#define RSA32API __stdcall
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#endif
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/*
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** ********************************************************************
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** md4.h -- Header file for implementation of **
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** MD4 Message Digest Algorithm **
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** Updated: 2/13/90 by Ronald L. Rivest **
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** (C) 1990 RSA Data Security, Inc. **
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** ********************************************************************
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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// MD4Update Errors
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#define MD4_SUCCESS 0
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#define MD4_TOO_BIG 1
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#define MD4_ALREADY_DONE 2
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// MD4 Digest length -- 4 word result == 16 bytes
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#define MD4DIGESTLEN 16
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// Block size of MD4 -- Assumes 8 bits per byte
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#define MD4BLOCKSIZE 64
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#define MD4BYTESTOBITS(bytes) ((bytes)*8) // MDupdate wants bits
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/* MDstruct is the data structure for a message digest computation.
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*/
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typedef struct {
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unsigned long buffer[4]; /* Holds 4-word result of MD computation */
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unsigned char count[8]; /* Number of bits processed so far */
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unsigned int done; /* Nonzero means MD computation finished */
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} MDstruct, *MDptr;
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/* MDbegin(MD)
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** Input: MD -- an MDptr
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** Initialize the MDstruct prepatory to doing a message digest
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** computation.
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**
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** MTS: Assumes MDPtr is locked against simultaneous use.
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*/
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extern void MDbegin(MDptr);
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/* MDupdate(MD,X,count)
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** Input: MD -- an MDptr
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** X -- a pointer to an array of unsigned characters.
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** count -- the number of bits of X to use (an unsigned int).
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** Updates MD using the first "count" bits of X.
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** The array pointed to by X is not modified.
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** If count is not a multiple of 8, MDupdate uses high bits of
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** last byte.
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** This is the basic input routine for a user.
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** The routine terminates the MD computation when count < MD4BLOCKSIZE, so
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** every MD computation should end with one call to MDupdate with a
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** count less than MD4BLOCKSIZE. Zero is OK for a count.
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**
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** Return values:
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** MD4_SUCCESS: success
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** MD4_TOO_LONG: Hash is already terminated
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** MD4_ALREADY_DONE: Length is invalid (too big)
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**
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** MTS: Assumes MDPtr is locked against simultaneous use.
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**
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**
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** NOTE: MDupdate wants the length in BITS
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*/
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extern int MDupdate(MDptr, const unsigned char *pbData, int wLen);
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/*
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This second implementation of MD4 entry points is the newer style,
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optimized implementation, compatible with newer code expecting these
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entry point names.
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Scott Field (sfield) 21-Oct-97
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*/
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#ifndef UINT4
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#define UINT4 unsigned long
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#endif
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/* Data structure for MD4 (Message Digest) computation */
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typedef struct {
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UINT4 state[4]; /* state (ABCD) */
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UINT4 count[2]; /* number of bits, modulo 2^64 (lsb first) */
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unsigned char buffer[64]; /* input buffer */
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unsigned char digest[16]; /* actual digest after MD4Final call */
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} MD4_CTX;
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#define MD4_LEN 16
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void RSA32API MD4Init (MD4_CTX *);
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void RSA32API MD4Update (MD4_CTX *, unsigned char *, unsigned int);
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void RSA32API MD4Final (MD4_CTX * );
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#ifdef __cplusplus
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}
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#endif
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#endif __MD4_H__
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