SslUtils.java — netty Source File

Source Code

/*
 * 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:
 *
 *   https://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.ssl;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.netty.buffer.ByteBufUtil;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.base64.Base64;
import io.netty.handler.codec.base64.Base64Dialect;
import io.netty.util.NetUtil;
import io.netty.util.internal.EmptyArrays;
import io.netty.util.internal.StringUtil;
import io.netty.util.internal.SystemPropertyUtil;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.Provider;
import java.security.SecureRandom;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLHandshakeException;
import javax.net.ssl.TrustManager;

import static java.util.Arrays.asList;

/**
 * Constants for SSL packets.
 */
final class SslUtils {
    private static final InternalLogger logger = InternalLoggerFactory.getInstance(SslUtils.class);

    // See https://tools.ietf.org/html/rfc8446#appendix-B.4
    static final Set<String> TLSV13_CIPHERS = Collections.unmodifiableSet(new LinkedHashSet<String>(
            asList("TLS_AES_256_GCM_SHA384", "TLS_CHACHA20_POLY1305_SHA256",
                          "TLS_AES_128_GCM_SHA256", "TLS_AES_128_CCM_8_SHA256",
                          "TLS_AES_128_CCM_SHA256")));

// ... (542 more lines)