XrpSigner.fromKeyBytes constructor

XrpSigner.fromKeyBytes(List<int> keyBytes, EllipticCurveTypes curve)

Factory method to create an XrpSigner instance from key bytes and curve type.

This factory method takes a list of key bytes keyBytes and an EllipticCurveTypes curve as input and returns a new XrpSigner instance based on the specified curve type and key bytes.

keyBytes The bytes representing the private key. curve The elliptic curve type of the private key. returns An instance of XrpSigner initialized with the provided key bytes and curve type.

Implementation

factory XrpSigner.fromKeyBytes(List<int> keyBytes, EllipticCurveTypes curve) {
  switch (curve) {
    case EllipticCurveTypes.ed25519:
      // Create an EDDSA private key from the key bytes using the ED25519 curve.
      final signingKey = EDDSAPrivateKey(
          _XrpSignerConst.ed25519Generator, keyBytes, () => SHA512());
      return XrpSigner._(signingKey, null);
    case EllipticCurveTypes.secp256k1:
      // Create an ECDSA private key from the key bytes using the SECP256K1 curve.
      final signingKey =
          ECDSAPrivateKey.fromBytes(keyBytes, _XrpSignerConst.secp256);
      return XrpSigner._(null, EcdsaSigningKey(signingKey));
    default:
      // Throw an error if the curve type is not supported.
      throw MessageException(
          "xrp signer support ${EllipticCurveTypes.secp256k1.name} or ${EllipticCurveTypes.ed25519} private key");
  }
}