let mut chacha = ChaCha20::new(&keys.rho, &[0u8; 8]);
for _ in 0..(packet_data.len() - pos) { // TODO: Batch this.
let mut dummy = [0; 1];
let mut chacha = ChaCha20::new(&keys.rho, &[0u8; 8]);
for _ in 0..(packet_data.len() - pos) { // TODO: Batch this.
let mut dummy = [0; 1];