krdc/vnc/d3des.h

   1 /*
   2  * This is D3DES (V5.09) by Richard Outerbridge with the double and
   3  * triple-length support removed for use in VNC.
   4  *
   5  * These changes are:
   6  *  Copyright (C) 1999 AT&T Laboratories Cambridge.  All Rights Reserved.
   7  *
   8  * This software is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  */
  12
  13 /* D3DES (V5.09) - d3des.h
  14  *
  15  *      Headers and defines for d3des.c
  16  *      Graven Imagery, 1992.
  17
  18  * A portable, public domain, version of the Data Encryption Standard.
  19  *
  20  * Written with Symantec's THINK (Lightspeed) C by Richard Outerbridge.
  21  * Thanks to: Dan Hoey for his excellent Initial and Inverse permutation
  22  * code;  Jim Gillogly & Phil Karn for the DES key schedule code; Dennis
  23  * Ferguson, Eric Young and Dana How for comparing notes; and Ray Lau,
  24  * for humouring me on.
  25  *
  26  * Copyright (c) 1988,1989,1990,1991,1992 by Richard Outerbridge.
  27  * (GEnie : OUTER; CIS : [71755,204]) Graven Imagery, 1992.
  28  */
  29
  30 #define EN0     0       /* MODE == encrypt */
  31 #define DE1     1       /* MODE == decrypt */
  32
  33 extern void deskey(unsigned char *, int);
  34 /*                    hexkey[8]     MODE
  35  * Sets the internal key register according to the hexadecimal
  36  * key contained in the 8 bytes of hexkey, according to the DES,
  37  * for encryption or decryption according to MODE.
  38  */
  39
  40 extern void usekey(unsigned long *);
  41 /*                  cookedkey[32]
  42  * Loads the internal key register with the data in cookedkey.
  43  */
  44
  45 extern void cpkey(unsigned long *);
  46 /*                 cookedkey[32]
  47  * Copies the contents of the internal key register into the storage
  48  * located at &cookedkey[0].
  49  */
  50
  51 extern void des(unsigned char *, unsigned char *);
  52 /*                  from[8]           to[8]
  53  * Encrypts/Decrypts (according to the key currently loaded in the
  54  * internal key register) one block of eight bytes at address 'from'
  55  * into the block at address 'to'.  They can be the same.
  56  */
  57
  58 /* d3des.h V5.09 rwo 9208.04 15:06 Graven Imagery
  59  ********************************************************************/