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/*-
* Copyright (c) 2012 Alistair Crooks <agc@NetBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/param.h>
#ifdef _KERNEL
# include <sys/kmem.h>
#else
# include <arpa/inet.h>
# include <ctype.h>
# include <inttypes.h>
# include <stdarg.h>
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# include <time.h>
# include <unistd.h>
#endif
#include "rand.h"
int
RAND_bytes(unsigned char *buf, int num)
{
uint32_t r;
size_t cc;
int i;
if (buf == NULL || num < 0) {
return 0;
}
for (i = 0 ; i < num ; i += sizeof(r)) {
r = arc4random();
cc = MIN(sizeof(r), (size_t)(num - i));
(void) memcpy(&buf[i], &r, cc);
}
return 1;
}
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