apiVersion: release-notes/v2
kind: feature
area: security
issue:
  - https://github.com/istio/istio/issues/28996
releaseNotes:
  - |

apiVersion: release-notes/v2
kind: feature
area: security
issue:
  - https://github.com/istio/istio/issues/28996
releaseNotes:
  - |

    // not customize the cipher suites list.
    List<CipherSuite> customCipherSuites = asList(
        CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
        CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
        CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
        CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384);

    assertThat(CipherSuite.TLS_RSA_EXPORT_WITH_RC4_40_MD5)
      .isEqualTo(forJavaName("SSL_RSA_EXPORT_WITH_RC4_40_MD5"))
    assertThat(CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA256)
      .isNotEqualTo(CipherSuite.TLS_RSA_EXPORT_WITH_RC4_40_MD5)
  }

  @Test
  fun forJavaName_acceptsArbitraryStrings() {
    // Shouldn't throw.
    forJavaName("example CipherSuite name that is not in the whitelist")
  }

import okhttp3.internal.platform.Platform
import org.conscrypt.Conscrypt

// TLS 1.3
private val TLS13_CIPHER_SUITES =
  listOf(
    CipherSuite.TLS_AES_128_GCM_SHA256,
    CipherSuite.TLS_AES_256_GCM_SHA384,
    CipherSuite.TLS_CHACHA20_POLY1305_SHA256,
    CipherSuite.TLS_AES_128_CCM_SHA256,
    CipherSuite.TLS_AES_128_CCM_8_SHA256,
  )

/**
 * A TLS 1.3 only Connection Spec. This will be eventually be exposed

}

func (p *PilotArgs) Complete() error {
	cipherSuits, err := TLSCipherSuites(p.ServerOptions.TLSOptions.TLSCipherSuites)
	if err != nil {
		return err
	}
	p.ServerOptions.TLSOptions.CipherSuits = cipherSuits
	return nil
}

func allCiphers() map[string]uint16 {
	acceptedCiphers := make(map[string]uint16, len(tls.CipherSuites())+len(tls.InsecureCipherSuites()))

		return
	}

	tlsConfig := &tls.Config{
		GetCertificate: s.getIstiodCertificate,
		MinVersion:     tls.VersionTLS12,
		CipherSuites:   args.ServerOptions.TLSOptions.CipherSuits,
	}
	// Compliance for control plane validation and injection webhook server.
	sec_model.EnforceGoCompliance(tlsConfig)

	istiolog.Info("initializing secure webhook server for istiod webhooks")

		if IsValidCipherSuite(s) {
			if !validCiphers.InsertContains(s) {
				ret = append(ret, s)
			} else if log.DebugEnabled() {
				log.Debugf("ignoring duplicated cipherSuite: %q", s)
			}
		} else if log.DebugEnabled() {
			log.Debugf("ignoring unsupported cipherSuite: %q", s)
		}
	}
	return ret

	}
	ciphers := SupportedCiphers
	if mc != nil && mc.MeshMTLS != nil && mc.MeshMTLS.CipherSuites != nil {
		ciphers = mc.MeshMTLS.CipherSuites
	}
	// Set Minimum TLS version to match the default client version and allowed strong cipher suites for sidecars.
	ctx.CommonTlsContext.TlsParams = &tls.TlsParameters{
		CipherSuites:              ciphers,
		TlsMinimumProtocolVersion: minTLSVersion,

		// Therefore, we only filter this field when it is set.
		if len(ctx.TlsParams.CipherSuites) > 0 {
			ciphers := []string{}
			for _, cipher := range ctx.TlsParams.CipherSuites {
				if _, ok := fipsCipherIndex[cipher]; ok {
					ciphers = append(ciphers, cipher)
				}
			}
			ctx.TlsParams.CipherSuites = ciphers
		}
		// Default (unset) is P-256
		ctx.TlsParams.EcdhCurves = nil
		return
	default: