public CipherSuite DecideCipherSuite(CipherSuite[] clientCipherSuites)
{
var supportedCiphers = CipherSuiteExtensions.GetSupportedCipherSuites();
var cipher = clientCipherSuites.FirstOrDefault(x => supportedCiphers.Contains(x));
// WARNING: default is TLS_NULL_WITH_NULL_NULL....
return cipher;
}
