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/*
* lib/des425/new_rnd_key.c
*
* Copyright 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.
*
*
*/
/*
* Copyright (C) 1998 by the FundsXpress, INC.
*
* 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 FundsXpress. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. FundsXpress makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include "des.h"
/*
* des_init_random_number_generator:
*
* This routine takes a secret key possibly shared by a number
* of servers and uses it to generate a random number stream that is
* not shared by any of the other servers. It does this by using the current
* process id, host id, and the current time to the nearest second. The
* resulting stream seed is not useful information for cracking the secret
* key. Moreover, this routine keeps no copy of the secret key.
* This routine is used for example, by the kerberos server(s) with the
* key in question being the kerberos master key.
*
* Note: this routine calls des_set_random_generator_seed.
*/
void
des_init_random_number_generator(key)
mit_des_cblock key;
{
krb5_data seed;
seed.length = sizeof(key);
seed.data = key;
if (krb5_c_random_seed(/* XXX */ 0, &seed))
/* XXX */ abort();
}
/*
* des_new_random_key: create a random des key
*
* Requires: des_set_random_number_generater_seed must be at called least
* once before this routine is called.
*
* Notes: the returned key has correct parity and is guarenteed not
* to be a weak des key. Des_generate_random_block is used to
* provide the random bits.
*/
KRB5_DLLIMP int KRB5_CALLCONV
des_new_random_key(key)
mit_des_cblock key;
{
krb5_keyblock keyblock;
krb5_error_code kret;
kret = krb5_c_make_random_key(/* XXX */ 0, ENCTYPE_DES_CBC_CRC, &keyblock);
if (kret) return kret;
memcpy(key, keyblock.contents, sizeof(mit_des_cblock));
krb5_free_keyblock_contents(/* XXX */ 0, &keyblock);
return 0;
}
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