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/// The single place where we generate random material
/// for our own use. These functions never fail,
/// they panic on error.
use ring::rand::{SystemRandom, SecureRandom};
use crate::msgs::codec;
/// Fill the whole slice with random material.
pub fn fill_random(bytes: &mut [u8]) {
/// Make a Vec<u8> of the given size
/// containing random material.
pub fn random_vec(len: usize) -> Vec<u8> {
let mut v = vec![0; len];
fill_random(&mut v);
/// Return a uniformly random u32.
pub fn random_u32() -> u32 {
let mut buf = [0u8; 4];
fill_random(&mut buf);