processHandshake method
Implementation
@override
void processHandshake(Device device, NearbyMessage message) {
// In experimental mode, this handshake received message contains the public key
// of the peer device that is connecting
var verifier = SigningManager.initializeFromJwk(
Jwk.fromUtf8(message.message).toJson());
device.addVerifier(verifier);
device.setAuthManager(this);
device.setIsAuthenticated(true);
}