INNER CODE UNIT · Rust
counter_update
RustCrypto/stream-ciphers · rabbit/src/lib.rs:124
fn counter_update(&mut self) {
#[allow(unused_mut, clippy::needless_range_loop)]
for j in 0..8 {
let t = self.c[j] as u64 + A[j] as u64 + self.carry_bit as u64;
self.carry_bit = ((t / WORDSIZE) as u8) & 0b1;
self.c[j] = (t % WORDSIZE) as u32;
}
}
/// RFC 4503. 2.6. Next-State Function (page 3-4).
fn next_state(&mut self) {
let mut g = [0u32; 8];
self.counter_update();
#[allow(clippy::needless_range_loop)]
for j in 0..8 {
let u_plus_v = self.x[j] as u64 + self.c[j] as u64;