tendermint/crypto/default/

signature.rs

//! The pure Rust implementation of signature verification functions.

use crate::crypto::signature::Error;
use crate::{PublicKey, Signature};

#[derive(Copy, Clone, Debug, Default, PartialEq, Eq)]
pub struct Verifier;

impl crate::crypto::signature::Verifier for Verifier {
    fn verify(pubkey: PublicKey, msg: &[u8], signature: &Signature) -> Result<(), Error> {
        #[allow(unreachable_patterns)]
        match pubkey {
            PublicKey::Ed25519(pk) => {
                let pubkey = ed25519_consensus::VerificationKey::try_from(pk)
                    .map_err(|_| Error::MalformedPublicKey)?;
                let sig = ed25519_consensus::Signature::try_from(signature.as_bytes())
                    .map_err(|_| Error::MalformedSignature)?;
                pubkey
                    .verify(&sig, msg)
                    .map_err(|_| Error::VerificationFailed)
            },
            #[cfg(feature = "secp256k1")]
            PublicKey::Secp256k1(pk) => {
                use signature::Verifier as _;

                let sig = k256::ecdsa::Signature::try_from(signature.as_bytes())
                    .map_err(|_| Error::MalformedSignature)?;
                pk.verify(msg, &sig).map_err(|_| Error::VerificationFailed)
            },
            _ => Err(Error::UnsupportedKeyType),
        }
    }
}

#[cfg(test)]
mod tests {
    use crate::crypto::default::signature::Verifier;
    use crate::crypto::signature::Verifier as _;
    use crate::{PublicKey, Signature};

    // From https://datatracker.ietf.org/doc/html/rfc8032#section-7.1
    // Each test vector consists of: [public_key, message, signature].
    const ED25519_TEST_VECTORS: &[&[&[u8]]] = &[
        // Test 1
        &[
            &[
                0xd7, 0x5a, 0x98, 0x01, 0x82, 0xb1, 0x0a, 0xb7, 0xd5, 0x4b, 0xfe, 0xd3, 0xc9, 0x64,
                0x07, 0x3a, 0x0e, 0xe1, 0x72, 0xf3, 0xda, 0xa6, 0x23, 0x25, 0xaf, 0x02, 0x1a, 0x68,
                0xf7, 0x07, 0x51, 0x1a,
            ],
            &[],
            &[
                0xe5, 0x56, 0x43, 0x00, 0xc3, 0x60, 0xac, 0x72, 0x90, 0x86, 0xe2, 0xcc, 0x80, 0x6e,
                0x82, 0x8a, 0x84, 0x87, 0x7f, 0x1e, 0xb8, 0xe5, 0xd9, 0x74, 0xd8, 0x73, 0xe0, 0x65,
                0x22, 0x49, 0x01, 0x55, 0x5f, 0xb8, 0x82, 0x15, 0x90, 0xa3, 0x3b, 0xac, 0xc6, 0x1e,
                0x39, 0x70, 0x1c, 0xf9, 0xb4, 0x6b, 0xd2, 0x5b, 0xf5, 0xf0, 0x59, 0x5b, 0xbe, 0x24,
                0x65, 0x51, 0x41, 0x43, 0x8e, 0x7a, 0x10, 0x0b,
            ],
        ],
        // Test 2
        &[
            &[
                0x3d, 0x40, 0x17, 0xc3, 0xe8, 0x43, 0x89, 0x5a, 0x92, 0xb7, 0x0a, 0xa7, 0x4d, 0x1b,
                0x7e, 0xbc, 0x9c, 0x98, 0x2c, 0xcf, 0x2e, 0xc4, 0x96, 0x8c, 0xc0, 0xcd, 0x55, 0xf1,
                0x2a, 0xf4, 0x66, 0x0c,
            ],
            &[0x72],
            &[
                0x92, 0xa0, 0x09, 0xa9, 0xf0, 0xd4, 0xca, 0xb8, 0x72, 0x0e, 0x82, 0x0b, 0x5f, 0x64,
                0x25, 0x40, 0xa2, 0xb2, 0x7b, 0x54, 0x16, 0x50, 0x3f, 0x8f, 0xb3, 0x76, 0x22, 0x23,
                0xeb, 0xdb, 0x69, 0xda, 0x08, 0x5a, 0xc1, 0xe4, 0x3e, 0x15, 0x99, 0x6e, 0x45, 0x8f,
                0x36, 0x13, 0xd0, 0xf1, 0x1d, 0x8c, 0x38, 0x7b, 0x2e, 0xae, 0xb4, 0x30, 0x2a, 0xee,
                0xb0, 0x0d, 0x29, 0x16, 0x12, 0xbb, 0x0c, 0x00,
            ],
        ],
        // Test 3
        &[
            &[
                0xfc, 0x51, 0xcd, 0x8e, 0x62, 0x18, 0xa1, 0xa3, 0x8d, 0xa4, 0x7e, 0xd0, 0x02, 0x30,
                0xf0, 0x58, 0x08, 0x16, 0xed, 0x13, 0xba, 0x33, 0x03, 0xac, 0x5d, 0xeb, 0x91, 0x15,
                0x48, 0x90, 0x80, 0x25,
            ],
            &[0xaf, 0x82],
            &[
                0x62, 0x91, 0xd6, 0x57, 0xde, 0xec, 0x24, 0x02, 0x48, 0x27, 0xe6, 0x9c, 0x3a, 0xbe,
                0x01, 0xa3, 0x0c, 0xe5, 0x48, 0xa2, 0x84, 0x74, 0x3a, 0x44, 0x5e, 0x36, 0x80, 0xd7,
                0xdb, 0x5a, 0xc3, 0xac, 0x18, 0xff, 0x9b, 0x53, 0x8d, 0x16, 0xf2, 0x90, 0xae, 0x67,
                0xf7, 0x60, 0x98, 0x4d, 0xc6, 0x59, 0x4a, 0x7c, 0x15, 0xe9, 0x71, 0x6e, 0xd2, 0x8d,
                0xc0, 0x27, 0xbe, 0xce, 0xea, 0x1e, 0xc4, 0x0a,
            ],
        ],
        // Test 1024
        &[
            &[
                0x27, 0x81, 0x17, 0xfc, 0x14, 0x4c, 0x72, 0x34, 0x0f, 0x67, 0xd0, 0xf2, 0x31, 0x6e,
                0x83, 0x86, 0xce, 0xff, 0xbf, 0x2b, 0x24, 0x28, 0xc9, 0xc5, 0x1f, 0xef, 0x7c, 0x59,
                0x7f, 0x1d, 0x42, 0x6e,
            ],
            &[
                0x08, 0xb8, 0xb2, 0xb7, 0x33, 0x42, 0x42, 0x43, 0x76, 0x0f, 0xe4, 0x26, 0xa4, 0xb5,
                0x49, 0x08, 0x63, 0x21, 0x10, 0xa6, 0x6c, 0x2f, 0x65, 0x91, 0xea, 0xbd, 0x33, 0x45,
                0xe3, 0xe4, 0xeb, 0x98, 0xfa, 0x6e, 0x26, 0x4b, 0xf0, 0x9e, 0xfe, 0x12, 0xee, 0x50,
                0xf8, 0xf5, 0x4e, 0x9f, 0x77, 0xb1, 0xe3, 0x55, 0xf6, 0xc5, 0x05, 0x44, 0xe2, 0x3f,
                0xb1, 0x43, 0x3d, 0xdf, 0x73, 0xbe, 0x84, 0xd8, 0x79, 0xde, 0x7c, 0x00, 0x46, 0xdc,
                0x49, 0x96, 0xd9, 0xe7, 0x73, 0xf4, 0xbc, 0x9e, 0xfe, 0x57, 0x38, 0x82, 0x9a, 0xdb,
                0x26, 0xc8, 0x1b, 0x37, 0xc9, 0x3a, 0x1b, 0x27, 0x0b, 0x20, 0x32, 0x9d, 0x65, 0x86,
                0x75, 0xfc, 0x6e, 0xa5, 0x34, 0xe0, 0x81, 0x0a, 0x44, 0x32, 0x82, 0x6b, 0xf5, 0x8c,
                0x94, 0x1e, 0xfb, 0x65, 0xd5, 0x7a, 0x33, 0x8b, 0xbd, 0x2e, 0x26, 0x64, 0x0f, 0x89,
                0xff, 0xbc, 0x1a, 0x85, 0x8e, 0xfc, 0xb8, 0x55, 0x0e, 0xe3, 0xa5, 0xe1, 0x99, 0x8b,
                0xd1, 0x77, 0xe9, 0x3a, 0x73, 0x63, 0xc3, 0x44, 0xfe, 0x6b, 0x19, 0x9e, 0xe5, 0xd0,
                0x2e, 0x82, 0xd5, 0x22, 0xc4, 0xfe, 0xba, 0x15, 0x45, 0x2f, 0x80, 0x28, 0x8a, 0x82,
                0x1a, 0x57, 0x91, 0x16, 0xec, 0x6d, 0xad, 0x2b, 0x3b, 0x31, 0x0d, 0xa9, 0x03, 0x40,
                0x1a, 0xa6, 0x21, 0x00, 0xab, 0x5d, 0x1a, 0x36, 0x55, 0x3e, 0x06, 0x20, 0x3b, 0x33,
                0x89, 0x0c, 0xc9, 0xb8, 0x32, 0xf7, 0x9e, 0xf8, 0x05, 0x60, 0xcc, 0xb9, 0xa3, 0x9c,
                0xe7, 0x67, 0x96, 0x7e, 0xd6, 0x28, 0xc6, 0xad, 0x57, 0x3c, 0xb1, 0x16, 0xdb, 0xef,
                0xef, 0xd7, 0x54, 0x99, 0xda, 0x96, 0xbd, 0x68, 0xa8, 0xa9, 0x7b, 0x92, 0x8a, 0x8b,
                0xbc, 0x10, 0x3b, 0x66, 0x21, 0xfc, 0xde, 0x2b, 0xec, 0xa1, 0x23, 0x1d, 0x20, 0x6b,
                0xe6, 0xcd, 0x9e, 0xc7, 0xaf, 0xf6, 0xf6, 0xc9, 0x4f, 0xcd, 0x72, 0x04, 0xed, 0x34,
                0x55, 0xc6, 0x8c, 0x83, 0xf4, 0xa4, 0x1d, 0xa4, 0xaf, 0x2b, 0x74, 0xef, 0x5c, 0x53,
                0xf1, 0xd8, 0xac, 0x70, 0xbd, 0xcb, 0x7e, 0xd1, 0x85, 0xce, 0x81, 0xbd, 0x84, 0x35,
                0x9d, 0x44, 0x25, 0x4d, 0x95, 0x62, 0x9e, 0x98, 0x55, 0xa9, 0x4a, 0x7c, 0x19, 0x58,
                0xd1, 0xf8, 0xad, 0xa5, 0xd0, 0x53, 0x2e, 0xd8, 0xa5, 0xaa, 0x3f, 0xb2, 0xd1, 0x7b,
                0xa7, 0x0e, 0xb6, 0x24, 0x8e, 0x59, 0x4e, 0x1a, 0x22, 0x97, 0xac, 0xbb, 0xb3, 0x9d,
                0x50, 0x2f, 0x1a, 0x8c, 0x6e, 0xb6, 0xf1, 0xce, 0x22, 0xb3, 0xde, 0x1a, 0x1f, 0x40,
                0xcc, 0x24, 0x55, 0x41, 0x19, 0xa8, 0x31, 0xa9, 0xaa, 0xd6, 0x07, 0x9c, 0xad, 0x88,
                0x42, 0x5d, 0xe6, 0xbd, 0xe1, 0xa9, 0x18, 0x7e, 0xbb, 0x60, 0x92, 0xcf, 0x67, 0xbf,
                0x2b, 0x13, 0xfd, 0x65, 0xf2, 0x70, 0x88, 0xd7, 0x8b, 0x7e, 0x88, 0x3c, 0x87, 0x59,
                0xd2, 0xc4, 0xf5, 0xc6, 0x5a, 0xdb, 0x75, 0x53, 0x87, 0x8a, 0xd5, 0x75, 0xf9, 0xfa,
                0xd8, 0x78, 0xe8, 0x0a, 0x0c, 0x9b, 0xa6, 0x3b, 0xcb, 0xcc, 0x27, 0x32, 0xe6, 0x94,
                0x85, 0xbb, 0xc9, 0xc9, 0x0b, 0xfb, 0xd6, 0x24, 0x81, 0xd9, 0x08, 0x9b, 0xec, 0xcf,
                0x80, 0xcf, 0xe2, 0xdf, 0x16, 0xa2, 0xcf, 0x65, 0xbd, 0x92, 0xdd, 0x59, 0x7b, 0x07,
                0x07, 0xe0, 0x91, 0x7a, 0xf4, 0x8b, 0xbb, 0x75, 0xfe, 0xd4, 0x13, 0xd2, 0x38, 0xf5,
                0x55, 0x5a, 0x7a, 0x56, 0x9d, 0x80, 0xc3, 0x41, 0x4a, 0x8d, 0x08, 0x59, 0xdc, 0x65,
                0xa4, 0x61, 0x28, 0xba, 0xb2, 0x7a, 0xf8, 0x7a, 0x71, 0x31, 0x4f, 0x31, 0x8c, 0x78,
                0x2b, 0x23, 0xeb, 0xfe, 0x80, 0x8b, 0x82, 0xb0, 0xce, 0x26, 0x40, 0x1d, 0x2e, 0x22,
                0xf0, 0x4d, 0x83, 0xd1, 0x25, 0x5d, 0xc5, 0x1a, 0xdd, 0xd3, 0xb7, 0x5a, 0x2b, 0x1a,
                0xe0, 0x78, 0x45, 0x04, 0xdf, 0x54, 0x3a, 0xf8, 0x96, 0x9b, 0xe3, 0xea, 0x70, 0x82,
                0xff, 0x7f, 0xc9, 0x88, 0x8c, 0x14, 0x4d, 0xa2, 0xaf, 0x58, 0x42, 0x9e, 0xc9, 0x60,
                0x31, 0xdb, 0xca, 0xd3, 0xda, 0xd9, 0xaf, 0x0d, 0xcb, 0xaa, 0xaf, 0x26, 0x8c, 0xb8,
                0xfc, 0xff, 0xea, 0xd9, 0x4f, 0x3c, 0x7c, 0xa4, 0x95, 0xe0, 0x56, 0xa9, 0xb4, 0x7a,
                0xcd, 0xb7, 0x51, 0xfb, 0x73, 0xe6, 0x66, 0xc6, 0xc6, 0x55, 0xad, 0xe8, 0x29, 0x72,
                0x97, 0xd0, 0x7a, 0xd1, 0xba, 0x5e, 0x43, 0xf1, 0xbc, 0xa3, 0x23, 0x01, 0x65, 0x13,
                0x39, 0xe2, 0x29, 0x04, 0xcc, 0x8c, 0x42, 0xf5, 0x8c, 0x30, 0xc0, 0x4a, 0xaf, 0xdb,
                0x03, 0x8d, 0xda, 0x08, 0x47, 0xdd, 0x98, 0x8d, 0xcd, 0xa6, 0xf3, 0xbf, 0xd1, 0x5c,
                0x4b, 0x4c, 0x45, 0x25, 0x00, 0x4a, 0xa0, 0x6e, 0xef, 0xf8, 0xca, 0x61, 0x78, 0x3a,
                0xac, 0xec, 0x57, 0xfb, 0x3d, 0x1f, 0x92, 0xb0, 0xfe, 0x2f, 0xd1, 0xa8, 0x5f, 0x67,
                0x24, 0x51, 0x7b, 0x65, 0xe6, 0x14, 0xad, 0x68, 0x08, 0xd6, 0xf6, 0xee, 0x34, 0xdf,
                0xf7, 0x31, 0x0f, 0xdc, 0x82, 0xae, 0xbf, 0xd9, 0x04, 0xb0, 0x1e, 0x1d, 0xc5, 0x4b,
                0x29, 0x27, 0x09, 0x4b, 0x2d, 0xb6, 0x8d, 0x6f, 0x90, 0x3b, 0x68, 0x40, 0x1a, 0xde,
                0xbf, 0x5a, 0x7e, 0x08, 0xd7, 0x8f, 0xf4, 0xef, 0x5d, 0x63, 0x65, 0x3a, 0x65, 0x04,
                0x0c, 0xf9, 0xbf, 0xd4, 0xac, 0xa7, 0x98, 0x4a, 0x74, 0xd3, 0x71, 0x45, 0x98, 0x67,
                0x80, 0xfc, 0x0b, 0x16, 0xac, 0x45, 0x16, 0x49, 0xde, 0x61, 0x88, 0xa7, 0xdb, 0xdf,
                0x19, 0x1f, 0x64, 0xb5, 0xfc, 0x5e, 0x2a, 0xb4, 0x7b, 0x57, 0xf7, 0xf7, 0x27, 0x6c,
                0xd4, 0x19, 0xc1, 0x7a, 0x3c, 0xa8, 0xe1, 0xb9, 0x39, 0xae, 0x49, 0xe4, 0x88, 0xac,
                0xba, 0x6b, 0x96, 0x56, 0x10, 0xb5, 0x48, 0x01, 0x09, 0xc8, 0xb1, 0x7b, 0x80, 0xe1,
                0xb7, 0xb7, 0x50, 0xdf, 0xc7, 0x59, 0x8d, 0x5d, 0x50, 0x11, 0xfd, 0x2d, 0xcc, 0x56,
                0x00, 0xa3, 0x2e, 0xf5, 0xb5, 0x2a, 0x1e, 0xcc, 0x82, 0x0e, 0x30, 0x8a, 0xa3, 0x42,
                0x72, 0x1a, 0xac, 0x09, 0x43, 0xbf, 0x66, 0x86, 0xb6, 0x4b, 0x25, 0x79, 0x37, 0x65,
                0x04, 0xcc, 0xc4, 0x93, 0xd9, 0x7e, 0x6a, 0xed, 0x3f, 0xb0, 0xf9, 0xcd, 0x71, 0xa4,
                0x3d, 0xd4, 0x97, 0xf0, 0x1f, 0x17, 0xc0, 0xe2, 0xcb, 0x37, 0x97, 0xaa, 0x2a, 0x2f,
                0x25, 0x66, 0x56, 0x16, 0x8e, 0x6c, 0x49, 0x6a, 0xfc, 0x5f, 0xb9, 0x32, 0x46, 0xf6,
                0xb1, 0x11, 0x63, 0x98, 0xa3, 0x46, 0xf1, 0xa6, 0x41, 0xf3, 0xb0, 0x41, 0xe9, 0x89,
                0xf7, 0x91, 0x4f, 0x90, 0xcc, 0x2c, 0x7f, 0xff, 0x35, 0x78, 0x76, 0xe5, 0x06, 0xb5,
                0x0d, 0x33, 0x4b, 0xa7, 0x7c, 0x22, 0x5b, 0xc3, 0x07, 0xba, 0x53, 0x71, 0x52, 0xf3,
                0xf1, 0x61, 0x0e, 0x4e, 0xaf, 0xe5, 0x95, 0xf6, 0xd9, 0xd9, 0x0d, 0x11, 0xfa, 0xa9,
                0x33, 0xa1, 0x5e, 0xf1, 0x36, 0x95, 0x46, 0x86, 0x8a, 0x7f, 0x3a, 0x45, 0xa9, 0x67,
                0x68, 0xd4, 0x0f, 0xd9, 0xd0, 0x34, 0x12, 0xc0, 0x91, 0xc6, 0x31, 0x5c, 0xf4, 0xfd,
                0xe7, 0xcb, 0x68, 0x60, 0x69, 0x37, 0x38, 0x0d, 0xb2, 0xea, 0xaa, 0x70, 0x7b, 0x4c,
                0x41, 0x85, 0xc3, 0x2e, 0xdd, 0xcd, 0xd3, 0x06, 0x70, 0x5e, 0x4d, 0xc1, 0xff, 0xc8,
                0x72, 0xee, 0xee, 0x47, 0x5a, 0x64, 0xdf, 0xac, 0x86, 0xab, 0xa4, 0x1c, 0x06, 0x18,
                0x98, 0x3f, 0x87, 0x41, 0xc5, 0xef, 0x68, 0xd3, 0xa1, 0x01, 0xe8, 0xa3, 0xb8, 0xca,
                0xc6, 0x0c, 0x90, 0x5c, 0x15, 0xfc, 0x91, 0x08, 0x40, 0xb9, 0x4c, 0x00, 0xa0, 0xb9,
                0xd0,
            ],
            &[
                0x0a, 0xab, 0x4c, 0x90, 0x05, 0x01, 0xb3, 0xe2, 0x4d, 0x7c, 0xdf, 0x46, 0x63, 0x32,
                0x6a, 0x3a, 0x87, 0xdf, 0x5e, 0x48, 0x43, 0xb2, 0xcb, 0xdb, 0x67, 0xcb, 0xf6, 0xe4,
                0x60, 0xfe, 0xc3, 0x50, 0xaa, 0x53, 0x71, 0xb1, 0x50, 0x8f, 0x9f, 0x45, 0x28, 0xec,
                0xea, 0x23, 0xc4, 0x36, 0xd9, 0x4b, 0x5e, 0x8f, 0xcd, 0x4f, 0x68, 0x1e, 0x30, 0xa6,
                0xac, 0x00, 0xa9, 0x70, 0x4a, 0x18, 0x8a, 0x03,
            ],
        ],
    ];

    #[test]
    fn ed25519_test_vectors() {
        for (i, v) in ED25519_TEST_VECTORS.iter().enumerate() {
            let public_key = v[0];
            let msg = v[1];
            let sig = v[2];

            let public_key = PublicKey::from_raw_ed25519(public_key).unwrap();
            match public_key {
                PublicKey::Ed25519(_) => {},
                #[cfg(feature = "secp256k1")]
                _ => panic!("expected public key to be Ed25519: {:?}", public_key),
            }
            let sig = Signature::try_from(sig).unwrap();
            Verifier::verify(public_key, msg, &sig)
                .unwrap_or_else(|_| panic!("signature should be valid for test vector {}", i));
        }
    }

    // Arbitrary "valid" tests taken from
    // https://github.com/google/wycheproof/blob/2196000605e45d91097147c9c71f26b72af58003/testvectors/ecdsa_secp256k1_sha256_test.json
    //
    // Each test vector consists of: [public_key, message, signature].
    //
    // NB: It appears as though all signatures in this test suite are
    // DER-encoded.
    #[cfg(feature = "secp256k1")]
    const SECP256K1_TEST_VECTORS: &[&[&[u8]]] = &[
        // tcId 3
        &[
            &[
                0x04, 0xb8, 0x38, 0xff, 0x44, 0xe5, 0xbc, 0x17, 0x7b, 0xf2, 0x11, 0x89, 0xd0, 0x76,
                0x60, 0x82, 0xfc, 0x9d, 0x84, 0x32, 0x26, 0x88, 0x7f, 0xc9, 0x76, 0x03, 0x71, 0x10,
                0x0b, 0x7e, 0xe2, 0x0a, 0x6f, 0xf0, 0xc9, 0xd7, 0x5b, 0xfb, 0xa7, 0xb3, 0x1a, 0x6b,
                0xca, 0x19, 0x74, 0x49, 0x6e, 0xeb, 0x56, 0xde, 0x35, 0x70, 0x71, 0x95, 0x5d, 0x83,
                0xc4, 0xb1, 0xba, 0xda, 0xa0, 0xb2, 0x18, 0x32, 0xe9,
            ],
            &[0x31, 0x32, 0x33, 0x34, 0x30, 0x30],
            &[
                0x30, 0x45, 0x02, 0x21, 0x00, 0x81, 0x3e, 0xf7, 0x9c, 0xce, 0xfa, 0x9a, 0x56, 0xf7,
                0xba, 0x80, 0x5f, 0x0e, 0x47, 0x85, 0x84, 0xfe, 0x5f, 0x0d, 0xd5, 0xf5, 0x67, 0xbc,
                0x09, 0xb5, 0x12, 0x3c, 0xcb, 0xc9, 0x83, 0x23, 0x65, 0x02, 0x20, 0x6f, 0xf1, 0x8a,
                0x52, 0xdc, 0xc0, 0x33, 0x6f, 0x7a, 0xf6, 0x24, 0x00, 0xa6, 0xdd, 0x9b, 0x81, 0x07,
                0x32, 0xba, 0xf1, 0xff, 0x75, 0x80, 0x00, 0xd6, 0xf6, 0x13, 0xa5, 0x56, 0xeb, 0x31,
                0xba,
            ],
        ],
        // tcId 230
        &[
            &[
                0x04, 0xb8, 0x38, 0xff, 0x44, 0xe5, 0xbc, 0x17, 0x7b, 0xf2, 0x11, 0x89, 0xd0, 0x76,
                0x60, 0x82, 0xfc, 0x9d, 0x84, 0x32, 0x26, 0x88, 0x7f, 0xc9, 0x76, 0x03, 0x71, 0x10,
                0x0b, 0x7e, 0xe2, 0x0a, 0x6f, 0xf0, 0xc9, 0xd7, 0x5b, 0xfb, 0xa7, 0xb3, 0x1a, 0x6b,
                0xca, 0x19, 0x74, 0x49, 0x6e, 0xeb, 0x56, 0xde, 0x35, 0x70, 0x71, 0x95, 0x5d, 0x83,
                0xc4, 0xb1, 0xba, 0xda, 0xa0, 0xb2, 0x18, 0x32, 0xe9,
            ],
            &[0x32, 0x35, 0x35, 0x38, 0x35],
            &[
                0x30, 0x45, 0x02, 0x21, 0x00, 0xdd, 0x1b, 0x7d, 0x09, 0xa7, 0xbd, 0x82, 0x18, 0x96,
                0x10, 0x34, 0xa3, 0x9a, 0x87, 0xfe, 0xcf, 0x53, 0x14, 0xf0, 0x0c, 0x4d, 0x25, 0xeb,
                0x58, 0xa0, 0x7a, 0xc8, 0x5e, 0x85, 0xea, 0xb5, 0x16, 0x02, 0x20, 0x35, 0x13, 0x8c,
                0x40, 0x1e, 0xf8, 0xd3, 0x49, 0x3d, 0x65, 0xc9, 0x00, 0x2f, 0xe6, 0x2b, 0x43, 0xae,
                0xe5, 0x68, 0x73, 0x1b, 0x74, 0x45, 0x48, 0x35, 0x89, 0x96, 0xd9, 0xcc, 0x42, 0x7e,
                0x06,
            ],
        ],
        // tcId 231
        &[
            &[
                0x04, 0xb8, 0x38, 0xff, 0x44, 0xe5, 0xbc, 0x17, 0x7b, 0xf2, 0x11, 0x89, 0xd0, 0x76,
                0x60, 0x82, 0xfc, 0x9d, 0x84, 0x32, 0x26, 0x88, 0x7f, 0xc9, 0x76, 0x03, 0x71, 0x10,
                0x0b, 0x7e, 0xe2, 0x0a, 0x6f, 0xf0, 0xc9, 0xd7, 0x5b, 0xfb, 0xa7, 0xb3, 0x1a, 0x6b,
                0xca, 0x19, 0x74, 0x49, 0x6e, 0xeb, 0x56, 0xde, 0x35, 0x70, 0x71, 0x95, 0x5d, 0x83,
                0xc4, 0xb1, 0xba, 0xda, 0xa0, 0xb2, 0x18, 0x32, 0xe9,
            ],
            &[0x34, 0x32, 0x36, 0x34, 0x37, 0x39, 0x37, 0x32, 0x34],
            &[
                0x30, 0x45, 0x02, 0x21, 0x00, 0x95, 0xc2, 0x92, 0x67, 0xd9, 0x72, 0xa0, 0x43, 0xd9,
                0x55, 0x22, 0x45, 0x46, 0x22, 0x2b, 0xba, 0x34, 0x3f, 0xc1, 0xd4, 0xdb, 0x0f, 0xec,
                0x26, 0x2a, 0x33, 0xac, 0x61, 0x30, 0x56, 0x96, 0xae, 0x02, 0x20, 0x6e, 0xdf, 0xe9,
                0x67, 0x13, 0xae, 0xd5, 0x6f, 0x8a, 0x28, 0xa6, 0x65, 0x3f, 0x57, 0xe0, 0xb8, 0x29,
                0x71, 0x2e, 0x5e, 0xdd, 0xc6, 0x7f, 0x34, 0x68, 0x2b, 0x24, 0xf0, 0x67, 0x6b, 0x26,
                0x40,
            ],
        ],
    ];

    #[cfg(feature = "secp256k1")]
    #[test]
    fn secp256k1_test_vectors() {
        for (i, v) in SECP256K1_TEST_VECTORS.iter().enumerate() {
            let public_key = v[0];
            let msg = v[1];
            let sig = v[2];

            let public_key = PublicKey::from_raw_secp256k1(public_key).unwrap();
            match public_key {
                PublicKey::Secp256k1(_) => {},
                _ => panic!("expected public key to be secp256k1: {:?}", public_key),
            }
            let der_sig = k256::ecdsa::Signature::from_der(sig).unwrap();
            let sig = der_sig.to_bytes();
            let sig = Signature::try_from(sig.as_slice()).unwrap();
            Verifier::verify(public_key, msg, &sig)
                .unwrap_or_else(|_| panic!("signature should be valid for test vector {}", i));
        }
    }
}