| // |
| // ======================================================================== |
| // Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.websocket.common; |
| |
| import java.nio.charset.StandardCharsets; |
| import java.security.MessageDigest; |
| |
| import org.eclipse.jetty.util.B64Code; |
| |
| /** |
| * Logic for working with the <code>Sec-WebSocket-Key</code> and <code>Sec-WebSocket-Accept</code> headers. |
| * <p> |
| * This is kept separate from Connection objects to facilitate difference in behavior between client and server, as well as making testing easier. |
| */ |
| public class AcceptHash |
| { |
| /** |
| * Globally Unique Identifier for use in WebSocket handshake within <code>Sec-WebSocket-Accept</code> and <code>Sec-WebSocket-Key</code> http headers. |
| * <p> |
| * See <a href="https://tools.ietf.org/html/rfc6455#section-1.3">Opening Handshake (Section 1.3)</a> |
| */ |
| private final static byte[] MAGIC = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11".getBytes(StandardCharsets.ISO_8859_1); |
| |
| /** |
| * Concatenate the provided key with the Magic GUID and return the Base64 encoded form. |
| * |
| * @param key |
| * the key to hash |
| * @return the <code>Sec-WebSocket-Accept</code> header response (per opening handshake spec) |
| */ |
| public static String hashKey(String key) |
| { |
| try |
| { |
| MessageDigest md = MessageDigest.getInstance("SHA1"); |
| md.update(key.getBytes(StandardCharsets.UTF_8)); |
| md.update(MAGIC); |
| return new String(B64Code.encode(md.digest())); |
| } |
| catch (Exception e) |
| { |
| throw new RuntimeException(e); |
| } |
| } |
| } |