/* *  loki.h - specifies the interface to the LOKI encryption routines. *      This library proviloki routines to expand a key, encrypt and *      decrypt 64-bit data blocks.  The LOKI Data Encryption Algorithm *      is a block cipher which ensures that its output is a complex *      function of its input and the key. * *  Authors:	Lawrie Brown <Lawrie.Brown@adfa.oz.au>	Aug 1989 *		Matthew Kwan <mkwan@cs.adfa.oz.au>	Sep 1991 * *      Computer Science, UC UNSW, Australian Defence Force Academy, *          Canberra, ACT 2600, Australia. * *  Version: *      v1.0 - of loki64.o is current 7/89 lpb *	v2.0 - of loki64.c is current 9/91 mkwan *	v3.0 - now have loki89.c & loki91.c 10/92 lpb * *  Copyright 1989 by Lawrie Brown and UNSW. All rights reserved. *      This program may not be sold or used as inducement to buy a *      product without the written permission of the author. * *  Description: *  The routines provided by the library are: * *  lokikey(key)	    - expands a key into subkey, for use in  *    char  key[8];             encryption and decryption operations. * *  enloki(b)		    - main LOKI encryption routine, this routine  *    char  b[8];               encrypts one 64-bit block b with subkey * *  deloki(b)		    - main LOKI decryption routine, this routine  *    char  b[8];               decrypts one 64-bit block b with subkey * *  The 64-bit data & key blocks used in the algorithm are specified as eight *      unsigned chars. For the purposes of implementing the LOKI algorithm, *      these MUST be word aligned with bits are numbered as follows: *        [63..56] [55..48] 		...		[7..0] *      in  b[0]     b[1]  b[2]  b[3]  b[4]  b[5]  b[6]  b[7] */#define LOKIBLK	8		/* No of bytes in a LOKI data-block          */#define ROUNDS	16		/* No of LOKI rounds             	     */typedef unsigned long	Long;   /* type specification for aligned LOKI blocks */extern Long	lokikey[2];	/* 64-bit key used by LOKI routines          */extern char	*loki_lib_ver;	/* String with version no. & copyright       */#ifdef __STDC__			/* declare prototypes for library functions  */extern void enloki(char b[LOKIBLK]);extern void deloki(char b[LOKIBLK]);extern void setlokikey(char key[LOKIBLK]);#else				/* else just declare library functions extern */extern void enloki(), deloki(), setlokikey();#endif __STDC__