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/*
* 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 "k5-int.h"
#include "etypes.h"
krb5_error_code KRB5_CALLCONV
krb5_c_make_random_key(context, enctype, random_key)
krb5_context context;
krb5_enctype enctype;
krb5_keyblock *random_key;
{
int i;
krb5_error_code ret;
const struct krb5_enc_provider *enc;
size_t keybytes, keylength;
krb5_data random_data;
unsigned char *bytes;
for (i=0; i<krb5_enctypes_length; i++) {
if (krb5_enctypes_list[i].etype == enctype)
break;
}
if (i == krb5_enctypes_length)
return(KRB5_BAD_ENCTYPE);
enc = krb5_enctypes_list[i].enc;
keybytes = enc->keybytes;
keylength = enc->keylength;
if ((bytes = (unsigned char *) malloc(keybytes)) == NULL)
return(ENOMEM);
if ((random_key->contents = (krb5_octet *) malloc(keylength)) == NULL) {
free(bytes);
return(ENOMEM);
}
random_data.data = (char *) bytes;
random_data.length = keybytes;
if ((ret = krb5_c_random_make_octets(context, &random_data)))
goto cleanup;
random_key->magic = KV5M_KEYBLOCK;
random_key->enctype = enctype;
random_key->length = keylength;
ret = ((*(enc->make_key))(&random_data, random_key));
cleanup:
memset(bytes, 0, keybytes);
free(bytes);
if (ret) {
memset(random_key->contents, 0, keylength);
free(random_key->contents);
}
return(ret);
}
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