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/* cvm/random.c - CVM random number generation
* Copyright (C)2008 Bruce Guenter <bruce@untroubled.org>
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Derived from dns_random.c from djbdns-1.05, which was made public
* domain as per http://cr.yp.to/distributors.html on 2007-12-28. */
#include <string.h>
#include <systime.h>
#include <unistd.h>
#include <uint32.h>
#include <crypto/surfrand.h>
#include "random.h"
static struct surfrand state;
void cvm_random_init(void)
{
int i;
struct timeval tv;
uint32 data[32];
gettimeofday(&tv, 0);
data[0] += tv.tv_sec;
data[1] += tv.tv_usec;
data[2] = getpid();
data[3] = getppid();
surfrand_init(&state, data, 32);
}
void cvm_random_fill(unsigned char* buf, unsigned len)
{
surfrand_fill(&state, buf, len);
}
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