eme2 0.2.1

EME2 (ECB-Mask-ECB) wide-block cipher mode of operation
Documentation 
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use cipher::KeyIvInit;
use eme2::Eme2;
use serpent::Serpent;

type SerpentEme2 = Eme2<Serpent>;

#[test]
fn test_serpent_compatibility() {
    let key = [0x42; 48];
    let tweak = [0x11; 16];

    let mut plaintext = vec![0u8; 64];
    for (i, val) in plaintext.iter_mut().enumerate() {
        *val = (i % 256) as u8;
    }

    let mut buf = plaintext.clone();

    let cipher = SerpentEme2::new(&key.into(), &tweak.into());
    cipher.encrypt(&mut buf).expect("encryption succeeded");

    assert_ne!(buf, plaintext);
    assert_eq!(buf.len(), plaintext.len());

    cipher.decrypt(&mut buf).expect("decryption succeeded");
    assert_eq!(buf, plaintext);
}