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/*
* Copyright (C) 2014 Nikos Mavrogiannopouls
*
* This file is part of GnuTLS.
*
* GnuTLS is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GnuTLS 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GnuTLS. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <gnutls/gnutls.h>
#include <gnutls/crypto.h>
int main(int argc, char **argv)
{
unsigned char buf[64];
unsigned level, nbytes;
FILE *fp;
unsigned i;
gnutls_global_init();
if (argc != 4) {
fprintf(stderr, "args %d\nusage: %s [nonce|key] [nbytes] [outfile]\n", argc, argv[0]);
exit(1);
}
if (strcasecmp(argv[1], "nonce") == 0) {
level = GNUTLS_RND_NONCE;
} else if (strcasecmp(argv[1], "key") == 0) {
level = GNUTLS_RND_KEY;
} else {
fprintf(stderr, "don't know %s\n", argv[1]);
fprintf(stderr, "usage: %s [nonce|key] [nbytes] [outfile]\n", argv[0]);
exit(1);
}
nbytes = atoi(argv[2]);
fp = fopen(argv[3], "w");
if (fp == NULL) {
fprintf(stderr, "Cannot open %s\n", argv[3]);
exit(1);
}
for (i = 0; i < nbytes; i+=sizeof(buf)) {
if (gnutls_rnd(level, buf, sizeof(buf)) < 0)
exit(2);
fwrite(buf, 1, sizeof(buf), fp);
}
fclose(fp);
gnutls_global_deinit();
exit(0);
}
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