1*ebfedea0SLionel Sambuc /*-
2*ebfedea0SLionel Sambuc * Copyright (c) 2012 Alistair Crooks <agc@NetBSD.org>
3*ebfedea0SLionel Sambuc * All rights reserved.
4*ebfedea0SLionel Sambuc *
5*ebfedea0SLionel Sambuc * Redistribution and use in source and binary forms, with or without
6*ebfedea0SLionel Sambuc * modification, are permitted provided that the following conditions
7*ebfedea0SLionel Sambuc * are met:
8*ebfedea0SLionel Sambuc * 1. Redistributions of source code must retain the above copyright
9*ebfedea0SLionel Sambuc * notice, this list of conditions and the following disclaimer.
10*ebfedea0SLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
11*ebfedea0SLionel Sambuc * notice, this list of conditions and the following disclaimer in the
12*ebfedea0SLionel Sambuc * documentation and/or other materials provided with the distribution.
13*ebfedea0SLionel Sambuc *
14*ebfedea0SLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15*ebfedea0SLionel Sambuc * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16*ebfedea0SLionel Sambuc * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17*ebfedea0SLionel Sambuc * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18*ebfedea0SLionel Sambuc * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19*ebfedea0SLionel Sambuc * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20*ebfedea0SLionel Sambuc * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21*ebfedea0SLionel Sambuc * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22*ebfedea0SLionel Sambuc * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23*ebfedea0SLionel Sambuc * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24*ebfedea0SLionel Sambuc */
25*ebfedea0SLionel Sambuc #include <sys/types.h>
26*ebfedea0SLionel Sambuc #include <sys/param.h>
27*ebfedea0SLionel Sambuc
28*ebfedea0SLionel Sambuc #ifdef _KERNEL
29*ebfedea0SLionel Sambuc # include <sys/kmem.h>
30*ebfedea0SLionel Sambuc #else
31*ebfedea0SLionel Sambuc # include <arpa/inet.h>
32*ebfedea0SLionel Sambuc # include <ctype.h>
33*ebfedea0SLionel Sambuc # include <inttypes.h>
34*ebfedea0SLionel Sambuc # include <stdarg.h>
35*ebfedea0SLionel Sambuc # include <stdio.h>
36*ebfedea0SLionel Sambuc # include <stdlib.h>
37*ebfedea0SLionel Sambuc # include <string.h>
38*ebfedea0SLionel Sambuc # include <time.h>
39*ebfedea0SLionel Sambuc # include <unistd.h>
40*ebfedea0SLionel Sambuc #endif
41*ebfedea0SLionel Sambuc
42*ebfedea0SLionel Sambuc #include "rand.h"
43*ebfedea0SLionel Sambuc
44*ebfedea0SLionel Sambuc int
RAND_bytes(unsigned char * buf,int num)45*ebfedea0SLionel Sambuc RAND_bytes(unsigned char *buf, int num)
46*ebfedea0SLionel Sambuc {
47*ebfedea0SLionel Sambuc uint32_t r;
48*ebfedea0SLionel Sambuc size_t cc;
49*ebfedea0SLionel Sambuc int i;
50*ebfedea0SLionel Sambuc
51*ebfedea0SLionel Sambuc if (buf == NULL || num < 0) {
52*ebfedea0SLionel Sambuc return 0;
53*ebfedea0SLionel Sambuc }
54*ebfedea0SLionel Sambuc for (i = 0 ; i < num ; i += sizeof(r)) {
55*ebfedea0SLionel Sambuc r = arc4random();
56*ebfedea0SLionel Sambuc cc = MIN(sizeof(r), (size_t)(num - i));
57*ebfedea0SLionel Sambuc (void) memcpy(&buf[i], &r, cc);
58*ebfedea0SLionel Sambuc }
59*ebfedea0SLionel Sambuc return 1;
60*ebfedea0SLionel Sambuc }
61