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120 lines
4.7 KiB
120 lines
4.7 KiB
#ifndef _MD4_H_
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#define _MD4_H_
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/* MD4.H - header file for MD4C.C
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*/
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/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
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rights reserved.
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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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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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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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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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/* This code differs from the MD4 implementation contained in Internet
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RFC-1320 in the following respects:
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1. "global.h" is no longer needed.
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2. PROTO_LIST was removed from the function prototypes.
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3. Comments on the use of the main calls added to aid developers.
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*/
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/* ---------------------------------------------------------------------
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* The procedure for using the following function calls to compute a
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* digest is as follows:
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*
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* MD4_CTX context;
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* // create a storage context that persistes between calls.
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*
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* MD4_Init (&context);
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* // initialize context's initial digest and byte-count
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*
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* MD4Update (&context, inputString, inputLength);
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* // input first or only block of data to be digested.
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*
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* MD4Update (&context, inputString, inputLength);
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* // input subsequent blocks or last block of data to be digested.
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*
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* MD4Final (digest, &context);
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* // compute and return final 16-byte digest
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*
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* --------------------------------------------------------------------- */
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typedef unsigned long UINT4;
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/* POINTER defines a generic pointer type */
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typedef unsigned char *POINTER;
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/* MD4 context. */
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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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} MD4_CTX;
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/* ---------------------------------------------------------------------
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* This function initializes the context for the message digest.
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* It must be called as the first step and before processing input data.
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* --------------------------------------------------------------------- */
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void MD4Init ( MD4_CTX *context ) ; /* context */
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/* ---------------------------------------------------------------------
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* This function accepts input data of length "inputLen" and digests it.
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* All data to be digested is input via this function and no other.
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* The running byte count and any fragment of undigested data is stored
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* in the context for retention between calls.
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* --------------------------------------------------------------------- */
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void MD4Update ( MD4_CTX *context, /* context */
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POINTER input, /* input block */
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unsigned int inputLen ) ; /* length of input block */
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/* ---------------------------------------------------------------------
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* This function accepts not data, but finishes up the digest and
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* returns the 16 byte resulting message digest. Finishing up includes
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* taking any undigested fragment stored in the context, padding the
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* message, appending the length and then digesting the resulting string.
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* --------------------------------------------------------------------- */
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void MD4Final ( unsigned char *digest, /* 16-byte message digest */
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MD4_CTX *context ) ; /* context */
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/* ---------------------------------------------------------------------
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The MD4 test suite results, contained in appendix A.5 of RFC-1320,
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are as listed below. They are printed by the "mddriver.c" test
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driver contained in appendix A.4 of RFC-1320.
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MD4 test suite:
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MD4 ("") = 31d6cfe0d16ae931b73c59d7e0c089c0
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MD4 ("a") = bde52cb31de33e46245e05fbdbd6fb24
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MD4 ("abc") = a448017aaf21d8525fc10ae87aa6729d
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MD4 ("message digest") = d9130a8164549fe818874806e1c7014b
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MD4 ("abcdefghijklmnopqrstuvwxyz") = d79e1c308aa5bbcdeea8ed63df412da9
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MD4 ("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789")
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= 043f8582f241db351ce627e153e7f0e4
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MD4 ("123456789012345678901234567890123456789012345678901234567890123
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45678901234567890") = e33b4ddc9c38f2199c3e7b164fcc0536
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* --------------------------------------------------------------------- */
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#endif
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