1 // 2 // ======================================================================== 3 // Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd. 4 // ------------------------------------------------------------------------ 5 // All rights reserved. This program and the accompanying materials 6 // are made available under the terms of the Eclipse Public License v1.0 7 // and Apache License v2.0 which accompanies this distribution. 8 // 9 // The Eclipse Public License is available at 10 // http://www.eclipse.org/legal/epl-v10.html 11 // 12 // The Apache License v2.0 is available at 13 // http://www.opensource.org/licenses/apache2.0.php 14 // 15 // You may elect to redistribute this code under either of these licenses. 16 // ======================================================================== 17 // 18 19 package org.eclipse.jetty.websocket.common; 20 21 import java.io.UnsupportedEncodingException; 22 import java.security.MessageDigest; 23 24 import org.eclipse.jetty.util.B64Code; 25 import org.eclipse.jetty.util.StringUtil; 26 27 /** 28 * Logic for working with the <code>Sec-WebSocket-Key</code> and <code>Sec-WebSocket-Accept</code> headers. 29 * <p> 30 * This is kept separate from Connection objects to facilitate difference in behavior between client and server, as well as making testing easier. 31 */ 32 public class AcceptHash 33 { 34 /** 35 * Globally Unique Identifier for use in WebSocket handshake within <code>Sec-WebSocket-Accept</code> and <code>Sec-WebSocket-Key</code> http headers. 36 * <p> 37 * See <a href="https://tools.ietf.org/html/rfc6455#section-1.3">Opening Handshake (Section 1.3)</a> 38 */ 39 private final static byte[] MAGIC; 40 41 static 42 { 43 try 44 { 45 MAGIC = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11".getBytes(StringUtil.__ISO_8859_1); 46 } 47 catch (UnsupportedEncodingException e) 48 { 49 throw new RuntimeException(e); 50 } 51 } 52 53 /** 54 * Concatenate the provided key with the Magic GUID and return the Base64 encoded form. 55 * 56 * @param key 57 * the key to hash 58 * @return the <code>Sec-WebSocket-Accept</code> header response (per opening handshake spec) 59 */ 60 public static String hashKey(String key) 61 { 62 try 63 { 64 MessageDigest md = MessageDigest.getInstance("SHA1"); 65 md.update(key.getBytes("UTF-8")); 66 md.update(MAGIC); 67 return new String(B64Code.encode(md.digest())); 68 } 69 catch (Exception e) 70 { 71 throw new RuntimeException(e); 72 } 73 } 74 }