libotp 0.2.0

One Time Password generator
Documentation 
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use super::*;

#[test]
fn test_gen_secret() {
    let hotp_sha1 = HOTP::new(HOTPAlgorithm::HMACSHA1).unwrap();
    assert_eq!(hotp_sha1.secret.len(), 20);

    let hotp_sha256 = HOTP::new(HOTPAlgorithm::HMACSHA256).unwrap();
    assert_eq!(hotp_sha256.secret.len(), 32);

    let hotp_sha512 = HOTP::new(HOTPAlgorithm::HMACSHA512).unwrap();
    assert_eq!(hotp_sha512.secret.len(), 64);
}

#[test]
fn test_hotp_from_bin() {
    // SHA1
    HOTP::from_bin(&[
        0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
        0x10, 0x11, 0x12, 0x13, 0x14,
    ])
    .unwrap();

    // SHA256
    HOTP::from_bin(&[
        0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
        0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x20, 0x21, 0x22, 0x23, 0x24,
        0x25, 0x26,
    ])
    .unwrap();

    // SHA512
    HOTP::from_bin(&[
        0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
        0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e,
        0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
        0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c,
        0x3d, 0x3e, 0x3f, 0x40,
    ])
    .unwrap();
}

#[test]
fn test_hotp_from_base32() {
    HOTP::from_base32("AEBAGBAFAYDQQCIKBMGA2DQPCAIREEYU").unwrap();
    HOTP::from_base32("AEBAGBAFAYDQQCIKBMGA2DQPCAIREEYUCULBOGAZDINRYHI6D4QA====").unwrap();
    HOTP::from_base32("AEBAGBAFAYDQQCIKBMGA2DQPCAIREEYUCULBOGAZDINRYHI6D4QCCIRDEQSSMJZIFEVCWLBNFYXTAMJSGM2DKNRXHA4TUOZ4HU7D6QA=").unwrap();
}

#[test]
fn test_dynamic_trunc() {
    let num = HOTP::get_hotp_value(&[
        31, 134, 152, 105, 14, 2, 202, 22, 97, 133, 80, 239, 127, 25, 218, 142, 148, 91, 85, 90,
    ]);
    assert_eq!(num, 0x50ef7f19);
}

#[test]
fn test_secret() {
    let hotp_sha1 = HOTP {
        secret: vec![
            0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30, 0x31, 0x32, 0x33, 0x34,
            0x35, 0x36, 0x37, 0x38, 0x39, 0x30,
        ],
        algorithm: HOTPAlgorithm::HMACSHA1,
    };
    let hotp_sha256 = HOTP {
        secret: vec![
            0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30, 0x31, 0x32, 0x33, 0x34,
            0x35, 0x36, 0x37, 0x38, 0x39, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38,
            0x39, 0x30, 0x31, 0x32,
        ],
        algorithm: HOTPAlgorithm::HMACSHA256,
    };
    let hotp_sha512 = HOTP {
        secret: vec![
            0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30, 0x31, 0x32, 0x33, 0x34,
            0x35, 0x36, 0x37, 0x38, 0x39, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38,
            0x39, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30, 0x31, 0x32,
            0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,
            0x37, 0x38, 0x39, 0x30, 0x31, 0x32, 0x33, 0x34,
        ],
        algorithm: HOTPAlgorithm::HMACSHA512,
    };

    assert_eq!(hotp_sha1.get_otp(&[0, 0, 0, 0, 0, 0, 0, 1], 8), 94287082);
    assert_eq!(hotp_sha256.get_otp(&[0, 0, 0, 0, 0, 0, 0, 1], 8), 46119246);
    assert_eq!(hotp_sha512.get_otp(&[0, 0, 0, 0, 0, 0, 0, 1], 8), 90693936);
    assert_eq!(
        hotp_sha1.get_otp(&[0, 0, 0, 0, 0x02, 0x35, 0x23, 0xec], 8),
        7081804
    );
    assert_eq!(
        hotp_sha256.get_otp(&[0, 0, 0, 0, 0x02, 0x35, 0x23, 0xec], 8),
        68084774
    );
    assert_eq!(
        hotp_sha512.get_otp(&[0, 0, 0, 0, 0x02, 0x35, 0x23, 0xec], 8),
        25091201
    );
    assert_eq!(
        hotp_sha1.get_otp(&[0, 0, 0, 0, 0x02, 0x35, 0x23, 0xed], 8),
        14050471
    );
    assert_eq!(
        hotp_sha256.get_otp(&[0, 0, 0, 0, 0x02, 0x35, 0x23, 0xed], 8),
        67062674
    );
    assert_eq!(
        hotp_sha512.get_otp(&[0, 0, 0, 0, 0x02, 0x35, 0x23, 0xed], 8),
        99943326
    );
    assert_eq!(
        hotp_sha1.get_otp(&[0, 0, 0, 0, 0x02, 0x73, 0xef, 0x07], 8),
        89005924
    );
    assert_eq!(
        hotp_sha256.get_otp(&[0, 0, 0, 0, 0x02, 0x73, 0xef, 0x07], 8),
        91819424
    );
    assert_eq!(
        hotp_sha512.get_otp(&[0, 0, 0, 0, 0x02, 0x73, 0xef, 0x07], 8),
        93441116
    );
    assert_eq!(
        hotp_sha1.get_otp(&[0, 0, 0, 0, 0x03, 0xf9, 0x40, 0xaa], 8),
        69279037
    );
    assert_eq!(
        hotp_sha256.get_otp(&[0, 0, 0, 0, 0x03, 0xf9, 0x40, 0xaa], 8),
        90698825
    );
    assert_eq!(
        hotp_sha512.get_otp(&[0, 0, 0, 0, 0x03, 0xf9, 0x40, 0xaa], 8),
        38618901
    );
    assert_eq!(
        hotp_sha1.get_otp(&[0, 0, 0, 0, 0x27, 0xbc, 0x86, 0xaa], 8),
        65353130
    );
    assert_eq!(
        hotp_sha256.get_otp(&[0, 0, 0, 0, 0x27, 0xbc, 0x86, 0xaa], 8),
        77737706
    );
    assert_eq!(
        hotp_sha512.get_otp(&[0, 0, 0, 0, 0x27, 0xbc, 0x86, 0xaa], 8),
        47863826
    );
}

#[test]
fn test_time_to_counter() {
    const STEP: u64 = 30;
    assert_eq!(
        &utils::num_to_buffer(59 / STEP)[..],
        &[0, 0, 0, 0, 0, 0, 0, 1]
    );
    assert_eq!(
        &utils::num_to_buffer(1111111109 / STEP)[..],
        &[0, 0, 0, 0, 0x02, 0x35, 0x23, 0xec]
    );
    assert_eq!(
        &utils::num_to_buffer(1111111111 / STEP)[..],
        &[0, 0, 0, 0, 0x02, 0x35, 0x23, 0xed]
    );
    assert_eq!(
        &utils::num_to_buffer(1234567890 / STEP)[..],
        &[0, 0, 0, 0, 0x02, 0x73, 0xef, 0x07]
    );
    assert_eq!(
        &utils::num_to_buffer(2000000000 / STEP)[..],
        &[0, 0, 0, 0, 0x03, 0xf9, 0x40, 0xaa]
    );
    assert_eq!(
        &utils::num_to_buffer(20000000000 / STEP)[..],
        &[0, 0, 0, 0, 0x27, 0xbc, 0x86, 0xaa]
    );
}