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/*
* Copyright (C) 2001, 2003, 2004, 2005 Free Software Foundation
*
* Author: Nikos Mavroyanopoulos
*
* This file is part of GNUTLS.
*
* The GNUTLS library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA
*
*/
/* Functions to return random bytes.
*/
#include <gnutls_int.h>
#include <gnutls_random.h>
#include <gnutls_errors.h>
/* fills the buffer 'res' with random bytes of 'bytes' long.
* level is WEAK, STRONG, or VERY_STRONG (libgcrypt)
*/
int _gnutls_get_random(opaque * res, int bytes, int level)
{
int err;
switch (level) {
case GNUTLS_WEAK_RANDOM:
err = gc_nonce((char *) res, (size_t) bytes);
break;
case GNUTLS_STRONG_RANDOM:
err = gc_pseudo_random((char *) res, (size_t) bytes);
break;
default: /* GNUTLS_VERY_STRONG_RANDOM */
err = gc_random((char *) res, (size_t) bytes);
break;
}
if (err != GC_OK)
return GNUTLS_E_RANDOM_FAILED;
return GNUTLS_E_SUCCESS;
}
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