sync method

Uint8List sync(Uint8List message, Uint8List seckey)

Signs message using the seckey and returns the signature.

Implementation

// Future<Uint8List> call(final Uint8List message, final Uint8List seckey) =>
//     compute((_) => sync(message, seckey), null);

/// Signs [message] using the [seckey] and returns the `signature`.
Uint8List sync(final Uint8List message, final Uint8List seckey) {
  final Uint8List signedMessage = Uint8List(message.length + signatureLength);
  final int result = TweetNaCl.crypto_sign(
    signedMessage,
    -1,
    message,
    0,
    message.length,
    seckey,
  );
  if (result != 0) throw Exception('Failed to sign message.');
  return signedMessage.sublist(0, signatureLength);
}