Java tutorial
/* * Copyright 2014 The Netty Project * * The Netty Project licenses this file to you under the Apache License, * version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ package io.netty.handler.codec.http2; import io.netty.util.internal.UnstableApi; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.List; /** * Provides utilities related to security requirements specific to HTTP/2. */ @UnstableApi public final class Http2SecurityUtil { /** * The following list is derived from <a * href="http://docs.oracle.com/javase/8/docs/technotes/guides/security/SunProviders.html">SunJSSE Supported * Ciphers</a> and <a * href="https://wiki.mozilla.org/Security/Server_Side_TLS#Modern_compatibility">Mozilla Modern Cipher * Suites</a> in accordance with the <a * href="https://tools.ietf.org/html/rfc7540#section-9.2.2">HTTP/2 Specification</a>. * * According to the <a href="http://docs.oracle.com/javase/8/docs/technotes/guides/security/StandardNames.html"> * JSSE documentation</a> "the names mentioned in the TLS RFCs prefixed with TLS_ are functionally equivalent * to the JSSE cipher suites prefixed with SSL_". * Both variants are used to support JVMs supporting the one or the other. */ public static final List<String> CIPHERS; /** * <a href="https://wiki.mozilla.org/Security/Server_Side_TLS#Modern_compatibility">Mozilla Modern Cipher * Suites</a> minus the following cipher suites that are black listed by the * <a href="https://tools.ietf.org/html/rfc7540#appendix-A">HTTP/2 RFC</a>. */ private static final List<String> CIPHERS_JAVA_MOZILLA_MODERN_SECURITY = Collections .unmodifiableList(Arrays.asList( /* openssl = ECDHE-ECDSA-AES256-GCM-SHA384 */ "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384", /* openssl = ECDHE-RSA-AES256-GCM-SHA384 */ "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384", /* openssl = ECDHE-ECDSA-CHACHA20-POLY1305 */ "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256", /* openssl = ECDHE-RSA-CHACHA20-POLY1305 */ "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256", /* openssl = ECDHE-ECDSA-AES128-GCM-SHA256 */ "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256", /* REQUIRED BY HTTP/2 SPEC */ /* openssl = ECDHE-RSA-AES128-GCM-SHA256 */ "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256" /* REQUIRED BY HTTP/2 SPEC */ )); static { CIPHERS = Collections.unmodifiableList(new ArrayList<String>(CIPHERS_JAVA_MOZILLA_MODERN_SECURITY)); } private Http2SecurityUtil() { } }