HandshakeState constructor
      const
      HandshakeState({ 
    
    
- required Uint8List chainKey,
 - required Uint8List handshakeHash,
 - required XXHandshakeState state,
 - SecretKey? sendKey,
 - SecretKey? recvKey,
 - Uint8List? remoteEphemeralKey,
 - Uint8List? remoteStaticKey,
 
Implementation
const HandshakeState({
  required this.chainKey,
  required this.handshakeHash,
  required this.state,
  this.sendKey,
  this.recvKey,
  this.remoteEphemeralKey,
  this.remoteStaticKey,
});