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.h -

    14  *

    15  *	Headers and defines for d3des.c

    16  *	Graven Imagery, 1992.

    17  *

    18  * Copyright (c) 1988,1989,1990,1991,1992 by Richard Outerbridge

    19  *	(GEnie : OUTER; CIS : [71755,204])

    20  */

    21 

    22 #define EN0	0	/* MODE == encrypt */

    23 #define DE1	1	/* MODE == decrypt */

    24 

    25 extern void deskey(unsigned char *, int);

    26 /*		      hexkey[8]     MODE

    27  * Sets the internal key register according to the hexadecimal

    28  * key contained in the 8 bytes of hexkey, according to the DES,

    29  * for encryption or decryption according to MODE.

    30  */

    31 

    32 extern void usekey(unsigned long *);

    33 /*		    cookedkey[32]

    34  * Loads the internal key register with the data in cookedkey.

    35  */

    36 

    37 extern void cpkey(unsigned long *);

    38 /*		   cookedkey[32]

    39  * Copies the contents of the internal key register into the storage

    40  * located at &cookedkey[0].

    41  */

    42 

    43 extern void des(unsigned char *, unsigned char *);

    44 /*		    from[8]	      to[8]

    45  * Encrypts/Decrypts (according to the key currently loaded in the

    46  * internal key register) one block of eight bytes at address 'from'

    47  * into the block at address 'to'.  They can be the same.

    48  */

    49 

    50 /* d3des.h V5.09 rwo 9208.04 15:06 Graven Imagery

    51  ********************************************************************/