72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
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/*
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*
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* md4.h -- Header file for implementation of MD4 Message Digest Algorithm
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* Updated: 2/13/90 by Ronald L. Rivest
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* Reformatted and de-linted - 2/12/91 Phil Karn
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*
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* Copyright (C) 1990, RSA Data Security, Inc. All rights reserved.
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*
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* License to copy and use this software is granted provided that it
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* is identified as the "RSA Data Security, Inc. MD4 Message-Digest
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* Algorithm" in all material mentioning or referencing this software
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* or this function.
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*
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* License is also granted to make and use derivative works provided
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* that such works are identified as "derived from the RSA Data
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* Security, Inc. MD4 Message-Digest Algorithm" in all material
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* mentioning or referencing the derived work.
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*
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* RSA Data Security, Inc. makes no representations concerning either
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* the merchantability of this software or the suitability of this
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* software for any particular purpose. It is provided "as is"
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* without express or implied warranty of any kind.
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*
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* These notices must be retained in any copies of any part of this
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* documentation and/or software.
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*
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* $Id: md4.h,v 1.1 1994/05/21 05:46:05 deraadt Exp $
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*/
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#ifdef __STDC__
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#define __ARGS(X) X /* For ANSI C */
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#else
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#define __ARGS(X) ()
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#endif
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/* MDstruct is the data structure for a message digest computation. */
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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 computation.
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*/
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extern void MDbegin __ARGS((MDptr MDp));
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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 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 < 512, so
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* every MD computation should end with one call to MDupdate with a
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* count less than 512. Zero is OK for a count.
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*/
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extern void MDupdate __ARGS((MDptr MDp,unsigned char *X,unsigned int count));
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/* MDprint(MD)
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* Input: MD -- an MDptr
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* Prints message digest buffer MD as 32 hexadecimal digits.
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* Order is from low-order byte of buffer[0] to high-order byte of buffer[3].
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* Each byte is printed with high-order hexadecimal digit first.
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*/
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extern void MDprint __ARGS((MDptr MDp));
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/* End of md4.h */
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