vrfVerify method

  1. @override
bool vrfVerify(
  1. List<int> message,
  2. List<int> vrfSign, {
  3. List<int>? context,
  4. List<int>? extra,
})
override

Implementation

@override
bool vrfVerify(
  List<int> message,
  List<int> vrfSign, {
  List<int>? context,
  List<int>? extra,
}) {
  if (vrfSign.length != _SubstrateSr25519SignerConst.vrfResultLength) {
    throw ArgumentException.invalidOperationArguments(
      "vrfVerify",
      name: "vrfSign",
      reason: "Invalid vrf signature bytes length.",
    );
  }
  final MerlinTranscript vrfScript = _SubstrateSr25519SignerUtils.vrfScript(
    extra: extra,
  );
  final MerlinTranscript script =
      _SubstrateSr25519SignerUtils.substrateVrfSignScript(message, context);
  final VRFPreOut output = VRFPreOut(
    vrfSign.sublist(0, SchnorrkelKeyCost.vrfPreOutLength),
  );
  final VRFProof proof = VRFProof.fromBytes(
    vrfSign.sublist(SchnorrkelKeyCost.vrfPreOutLength),
  );
  return _verifier.vrfVerify(script, output, proof, verifyScript: vrfScript);
}