2 * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 2000-2003 Internet Software Consortium.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
18 /* $Id: genrandom.c,v 1.15 2007/06/19 23:46:59 tbox Exp $ */
26 #include <isc/stdlib.h>
29 main(int argc, char **argv) {
36 printf("usage: genrandom k file\n");
39 k = strtoul(argv[1], &endp, 10);
41 printf("usage: genrandom k file\n");
46 fp = fopen(argv[2], "w");
48 printf("failed to open %s\n", argv[2]);
52 #ifndef HAVE_ARC4RANDOM
56 #ifndef HAVE_ARC4RANDOM
57 unsigned short int x = (rand() & 0xFFFF);
59 unsigned short int x = (arc4random() & 0xFFFF);
61 unsigned char c = x & 0xFF;
62 if (putc(c, fp) == EOF) {
63 printf("error writing to file\n");
67 if (putc(c, fp) == EOF) {
68 printf("error writing to file\n");