for _, cipher := range tls.InsecureCipherSuites() {
		cipherKeys.Insert(cipher.Name)
	}
	return sets.SortedList(cipherKeys)
}

// secureTLSCipherNames returns a list of secure cipher suite names implemented by crypto/tls.
func secureTLSCipherNames() []string {
	cipherKeys := sets.New[string]()
	for _, cipher := range tls.CipherSuites() {
		cipherKeys.Insert(cipher.Name)
	}
	return sets.SortedList(cipherKeys)

		"Comma-separated list of cipher suites for istiod TLS server. "+
			"If omitted, the default Go cipher suites will be used. \n"+
			"Preferred values: "+strings.Join(secureTLSCipherNames(), ", ")+". \n"+
			"Insecure values: "+strings.Join(insecureTLSCipherNames(), ", ")+".")

	c.PersistentFlags().Float32Var(&serverArgs.RegistryOptions.KubeOptions.KubernetesAPIQPS, "kubernetesApiQPS", 80.0,