//! Ed25519 tests

use super::TestVector;
use hex_literal::hex;
use ring_compat::signature::{
    ed25519::{Signature, SigningKey, VerifyingKey},
    Signer, Verifier,
};

#[test]
fn sign_rfc8032_test_vectors() {
    for vector in TEST_VECTORS {
        let signing_key = SigningKey::from_slice(vector.sk).unwrap();
        assert_eq!(signing_key.sign(vector.msg).to_bytes(), vector.sig);
    }
}

#[test]
fn verify_rfc8032_test_vectors() {
    for vector in TEST_VECTORS {
        let verifying_key = VerifyingKey::from_slice(vector.pk).unwrap();
        let sig = Signature::try_from(vector.sig).unwrap();
        assert!(verifying_key.verify(vector.msg, &sig).is_ok());
    }
}

#[test]
fn rejects_tweaked_rfc8032_test_vectors() {
    for vector in TEST_VECTORS {
        let verifying_key = VerifyingKey::from_slice(vector.pk).unwrap();

        let mut tweaked_sig = [0u8; Signature::BYTE_SIZE];
        tweaked_sig.copy_from_slice(vector.sig);
        tweaked_sig[0] ^= 0x42;

        let sig = Signature::try_from(&tweaked_sig[..]).unwrap();
        assert!(verifying_key.verify(vector.msg, &sig).is_err());
    }
}

/// Ed25519 test vectors (from RFC 8032)
const TEST_VECTORS: &[TestVector] = &[
    TestVector {
        sk: &hex!("9d61b19deffd5a60ba844af492ec2cc44449c5697b326919703bac031cae7f60"),
        pk: &hex!("d75a980182b10ab7d54bfed3c964073a0ee172f3daa62325af021a68f707511a"),
        msg: b"",
        sig: &hex!("e5564300c360ac729086e2cc806e828a84877f1eb8e5d974d873e065224901555fb8821590a33bacc61e39701cf9b46bd25bf5f0595bbe24655141438e7a100b")
    },
    TestVector {
        sk: &hex!("4ccd089b28ff96da9db6c346ec114e0f5b8a319f35aba624da8cf6ed4fb8a6fb"),
        pk: &hex!("3d4017c3e843895a92b70aa74d1b7ebc9c982ccf2ec4968cc0cd55f12af4660c"),
        msg: &hex!("72"),
        sig: &hex!("92a009a9f0d4cab8720e820b5f642540a2b27b5416503f8fb3762223ebdb69da085ac1e43e15996e458f3613d0f11d8c387b2eaeb4302aeeb00d291612bb0c00"),
    },
    TestVector {
        sk: &hex!("c5aa8df43f9f837bedb7442f31dcb7b166d38535076f094b85ce3a2e0b4458f7"),
        pk: &hex!("fc51cd8e6218a1a38da47ed00230f0580816ed13ba3303ac5deb911548908025"),
        msg: &hex!("AF82"),
        sig: &hex!("6291d657deec24024827e69c3abe01a30ce548a284743a445e3680d7db5ac3ac18ff9b538d16f290ae67f760984dc6594a7c15e9716ed28dc027beceea1ec40a"),
    },
    TestVector {
        sk: &hex!("f5e5767cf153319517630f226876b86c8160cc583bc013744c6bf255f5cc0ee5"),
        pk: &hex!("278117fc144c72340f67d0f2316e8386ceffbf2b2428c9c51fef7c597f1d426e"),
        msg: &hex!("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"),
        sig: &hex!("0aab4c900501b3e24d7cdf4663326a3a87df5e4843b2cbdb67cbf6e460fec350aa5371b1508f9f4528ecea23c436d94b5e8fcd4f681e30a6ac00a9704a188a03"),
    },
    TestVector {
        sk: &hex!("833fe62409237b9d62ec77587520911e9a759cec1d19755b7da901b96dca3d42"),
        pk: &hex!("ec172b93ad5e563bf4932c70e1245034c35467ef2efd4d64ebf819683467e2bf"),
        msg: &hex!("ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f"),
        sig: &hex!("dc2a4459e7369633a52b1bf277839a00201009a3efbf3ecb69bea2186c26b58909351fc9ac90b3ecfdfbc7c66431e0303dca179c138ac17ad9bef1177331a704"),
    },
];