simple-rijndael

Pure Rust, simple implementation of the rijndael-cbc algorithm for osu! score decryption or encryption.

#[test]
fn test_dec() {
    use simple_rijndael::impls::RijndaelCbc;
    use simple_rijndael::paddings::ZeroPadding;

    let key = "osu!-scoreburgr---------20210520".as_bytes().into();
    let iv = vec![
        240, 124, 26, 154, 27, 186, 98, 170, 95, 190, 213, 103, 13, 128, 39, 59, 217, 84, 68, 144,
        173, 93, 117, 132, 33, 213, 96, 154, 228, 231, 197, 162,
    ];
    let cipher = vec![
        185, 209, 243, 33, 128, 187, 132, 199, 140, 189, 1, 129, 139, 66, 200, 37, 126, 34, 238,
        100, 93, 124, 192, 252, 31, 121, 2, 130, 138, 123, 69, 66, 122, 208, 169, 15, 120, 22, 148,
        19, 87, 203, 229, 139, 179, 89, 138, 56, 160, 239, 238, 254, 34, 119, 136, 225, 209, 226,
        69, 117, 97, 49, 225, 198, 91, 192, 196, 12, 32, 235, 103, 141, 142, 168, 29, 102, 252, 65,
        191, 137, 136, 170, 72, 165, 127, 49, 83, 201, 115, 26, 79, 200, 119, 28, 238, 34, 76, 25,
        185, 164, 182, 254, 66, 148, 18, 36, 27, 36, 59, 165, 220, 95, 164, 115, 128, 12, 5, 161,
        18, 236, 221, 167, 247, 104, 25, 29, 146, 225, 104, 140, 249, 175, 131, 158, 93, 143, 106,
        146, 114, 220, 128, 33, 114, 191, 232, 103, 94, 169, 90, 105, 8, 85, 33, 140, 198, 71, 40,
        65, 215, 29,
    ];
    let r = RijndaelCbc::<ZeroPadding>::new(key, 32).unwrap();
    let result = r.decrypt(iv, cipher);
    assert_eq!(
        result,
        Ok(vec![
            99, 53, 49, 97, 101, 101, 53, 54, 98, 98, 53, 49, 57, 53, 50, 52, 52, 50, 53, 50, 100,
            49, 57, 48, 98, 97, 97, 53, 52, 98, 52, 57, 58, 80, 117, 114, 101, 80, 101, 97, 99,
            101, 32, 58, 56, 49, 53, 55, 55, 50, 54, 50, 53, 97, 100, 97, 100, 54, 51, 57, 55, 51,
            53, 97, 48, 52, 52, 101, 56, 97, 98, 97, 57, 51, 54, 48, 58, 52, 52, 58, 49, 56, 58,
            54, 58, 52, 58, 54, 58, 50, 48, 58, 51, 56, 54, 52, 53, 58, 50, 54, 58, 70, 97, 108,
            115, 101, 58, 70, 58, 54, 52, 58, 70, 97, 108, 115, 101, 58, 48, 58, 50, 49, 48, 54,
            49, 53, 48, 54, 52, 52, 51, 49, 58, 50, 48, 50, 49, 48, 53, 50, 48, 19, 19, 19, 19, 19,
            19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19
        ])
    )
}

#[test]
fn test_enc() {
    use simple_rijndael::impls::RijndaelCbc;
    use simple_rijndael::paddings::ZeroPadding;

    let key = "osu!-scoreburgr---------20210520".as_bytes().into();
    let iv = vec![
        240, 124, 26, 154, 27, 186, 98, 170, 95, 190, 213, 103, 13, 128, 39, 59, 217, 84, 68, 144,
        173, 93, 117, 132, 33, 213, 96, 154, 228, 231, 197, 162,
    ];
    let source = vec![
        99, 53, 49, 97, 101, 101, 53, 54, 98, 98, 53, 49, 57, 53, 50, 52, 52, 50, 53, 50, 100, 49,
        57, 48, 98, 97, 97, 53, 52, 98, 52, 57, 58, 80, 117, 114, 101, 80, 101, 97, 99, 101, 32,
        58, 56, 49, 53, 55, 55, 50, 54, 50, 53, 97, 100, 97, 100, 54, 51, 57, 55, 51, 53, 97, 48,
        52, 52, 101, 56, 97, 98, 97, 57, 51, 54, 48, 58, 52, 52, 58, 49, 56, 58, 54, 58, 52, 58,
        54, 58, 50, 48, 58, 51, 56, 54, 52, 53, 58, 50, 54, 58, 70, 97, 108, 115, 101, 58, 70, 58,
        54, 52, 58, 70, 97, 108, 115, 101, 58, 48, 58, 50, 49, 48, 54, 49, 53, 48, 54, 52, 52, 51,
        49, 58, 50, 48, 50, 49, 48, 53, 50, 48, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
        19, 19, 19, 19, 19, 19,
    ];
    let r = RijndaelCbc::<ZeroPadding>::new(key, 32).unwrap();
    let result = r.encrypt(iv, source);
    assert_eq!(
        result,
        Ok(vec![
            185, 209, 243, 33, 128, 187, 132, 199, 140, 189, 1, 129, 139, 66, 200, 37, 126, 34,
            238, 100, 93, 124, 192, 252, 31, 121, 2, 130, 138, 123, 69, 66, 122, 208, 169, 15, 120,
            22, 148, 19, 87, 203, 229, 139, 179, 89, 138, 56, 160, 239, 238, 254, 34, 119, 136,
            225, 209, 226, 69, 117, 97, 49, 225, 198, 91, 192, 196, 12, 32, 235, 103, 141, 142,
            168, 29, 102, 252, 65, 191, 137, 136, 170, 72, 165, 127, 49, 83, 201, 115, 26, 79, 200,
            119, 28, 238, 34, 76, 25, 185, 164, 182, 254, 66, 148, 18, 36, 27, 36, 59, 165, 220,
            95, 164, 115, 128, 12, 5, 161, 18, 236, 221, 167, 247, 104, 25, 29, 146, 225, 104, 140,
            249, 175, 131, 158, 93, 143, 106, 146, 114, 220, 128, 33, 114, 191, 232, 103, 94, 169,
            90, 105, 8, 85, 33, 140, 198, 71, 40, 65, 215, 29,
        ])
    )
}