ref: 51496e8b8d5cae9f74e07f43ad8cc6b893fc7a19
dir: /sys/src/cmd/unix/drawterm/libsec/prng.c/
#include "os.h"
#include <mp.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();
}