EcdaSignature.fromRpcSig constructor

EcdaSignature.fromRpcSig(String sig)

Implementation

factory EcdaSignature.fromRpcSig(String sig) {
  Uint8List buf = sig.toUint8List();

  // NOTE: with potential introduction of chainId this might need to be updated
  if (buf.length != 65) {
    throw ArgumentError('Invalid signature length');
  }

  var v = buf[64];
  // support both versions of `eth_sign` responses
  if (v < 27) {
    v += 27;
  }

  return EcdaSignature(
    buf.sublist(0, 32),
    buf.sublist(32, 64),
    v,
  );
}