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/* $OpenBSD: rc4_rand.c,v 1.2 2014/04/16 13:57:14 reyk Exp $ */
/*
* Copyright (c) 2014 Miodrag Vallat.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdlib.h>
#include <openssl/rand.h>
static int
arc4_rand_bytes(unsigned char *buf, int num)
{
if (num > 0)
arc4random_buf(buf, (size_t)num);
return 1;
}
static int
arc4_rand_status(void)
{
/* no possible error condition */
return 1;
}
static RAND_METHOD rand_arc4_meth = {
.seed = NULL, /* no external seed allowed */
.bytes = arc4_rand_bytes,
.cleanup = NULL, /* no cleanup necessary */
.add = NULL, /* no external feed allowed */
.pseudorand = arc4_rand_bytes,
.status = arc4_rand_status
};
RAND_METHOD *RAND_SSLeay(void)
{
return &rand_arc4_meth;
}
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