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/*
* lib/des425/random_key.c
*
* Copyright 1990,1991 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.
*
*
*/
#include "des.h"
extern krb5_pointer des425_random_state;
/* random_key */
int
des_random_key(key)
mit_des_cblock *key;
{
krb5_encrypt_block eblock;
krb5_keyblock keyblock;
krb5_keyblock *new_key;
krb5_error_code kret;
mit_des_cblock nullkey;
krb5_use_enctype(NULL, &eblock, ENCTYPE_DES_CBC_CRC);
memset(nullkey, 0, sizeof(mit_des_cblock));
mit_des_fixup_key_parity(*key);
keyblock.enctype = ENCTYPE_DES_CBC_CRC;
keyblock.length = sizeof(mit_des_cblock);
keyblock.contents = (krb5_octet *)nullkey;
if (! des425_random_state)
mit_des_init_random_key(&eblock, &keyblock, &des425_random_state);
kret = mit_des_random_key(NULL, des425_random_state, &new_key);
if (kret) return kret;
memcpy(key, new_key->contents, sizeof(mit_des_cblock));
krb5_free_keyblock(NULL, new_key);
return(0);
}
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