INNER CODE UNIT · Rust
setup_iv
RustCrypto/stream-ciphers · rabbit/src/lib.rs:99
fn setup_iv(&mut self, iv: [u8; IV_BYTE_LEN]) {
let mut i = [0_u32; 4];
i[0] =
iv[0] as u32 | ((iv[1] as u32) << 8) | ((iv[2] as u32) << 16) | ((iv[3] as u32) << 24);
i[2] =
iv[4] as u32 | ((iv[5] as u32) << 8) | ((iv[6] as u32) << 16) | ((iv[7] as u32) << 24);
i[1] = (i[0] >> 16) | (i[2] & 0xFFFF0000);
i[3] = (i[2] << 16) | (i[0] & 0x0000FFFF);
self.c[0] ^= i[0];
self.c[1] ^= i[1];
self.c[2] ^= i[2];
self.c[3] ^= i[3];
self.c[4] ^= i[0];
self.c[5] ^= i[1];
self.c[6] ^= i[2];
self.c[7] ^= i[3];