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/*
* lib/des425/key_sched.c
*
* Copyright 1985, 1986, 1987, 1988, 1990 by the Massachusetts Institute
* of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
* This routine computes the DES key schedule given a key. The
* permutations and shifts have been done at compile time, resulting
* in a direct one-step mapping from the input key to the key
* schedule.
*
* Also checks parity and weak keys.
*
* Watch out for the subscripts -- most effectively start at 1 instead
* of at zero. Maybe some bugs in that area.
*
* DON'T change the data types for arrays and such, or it will either
* break or run slower. This was optimized for Uvax2.
*
* In case the user wants to cache the computed key schedule, it is
* passed as an arg. Also implies that caller has explicit control
* over zeroing both the key schedule and the key.
*
* All registers labeled imply Vax using the Ultrix or 4.2bsd compiler.
*
* Originally written 6/85 by Steve Miller, MIT Project Athena.
*/
#include <stdio.h>
#include "des.h"
int
des_key_sched(k,schedule)
register mit_des_cblock k; /* r11 */
mit_des_key_schedule schedule;
{
return (mit_des_key_sched(k, schedule));
}
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