sign method

@override String sign(String message)

Implementation

@override
String sign(String message) {
  final msg = processMessage(message);
  switch (_scheme) {
    case DotScheme.sr25519:
      final signature = SR25519.sign(privateKey, msg);
      return dynamicToString(signature);
    case DotScheme.ed25519:
      final signature = ED25519.sign(privateKey, msg);
      return dynamicToString(signature);
  }
}