ref: af6f03e52829a571f1fa3d61c0bfa09a1c89ea36
dir: /sys/src/libsec/port/prng.c/
#include "os.h"
#include <libsec.h>
//
// just use the libc prng to fill a buffer
//
void
prng(uchar *p, int n)
{
uchar *e;
for(e = p+n; p < e; p++)
*p = rand();
}