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src/java.base/share/classes/sun/security/ssl/SessionId.java

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   1 /*
   2  * Copyright (c) 1996, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.security.ssl;
  27 
  28 import java.security.SecureRandom;
  29 import java.util.Arrays;
  30 import javax.net.ssl.SSLProtocolException;
  31 
  32 /**
  33  * Encapsulates an SSL session ID.
  34  *
  35  * @author Satish Dharmaraj
  36  * @author David Brownell
  37  */
  38 final class SessionId {
  39     static final int MAX_LENGTH = 32;
  40     private final byte[] sessionId;          // max 32 bytes
  41 
  42     // Constructs a new session ID ... perhaps for a rejoinable session
  43     SessionId(boolean isRejoinable, SecureRandom generator) {
  44         if (isRejoinable && (generator != null)) {
  45             sessionId = new RandomCookie(generator).randomBytes;
  46         } else {
  47             sessionId = new byte[0];
  48         }
  49     }
  50 
  51     // Constructs a session ID from a byte array (max size 32 bytes)
  52     SessionId(byte[] sessionId) {
  53         this.sessionId = sessionId.clone();
  54     }
  55 
  56     // Returns the length of the ID, in bytes
  57     int length() {
  58         return sessionId.length;
  59     }


   1 /*
   2  * Copyright (c) 1996, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.security.ssl;
  27 
  28 import java.security.SecureRandom;
  29 import java.util.Arrays;
  30 import javax.net.ssl.SSLProtocolException;
  31 
  32 /**
  33  * Encapsulates an SSL session ID.
  34  *
  35  * @author Satish Dharmaraj
  36  * @author David Brownell
  37  */
  38 final class SessionId {
  39     private static final int MAX_LENGTH = 32;
  40     private final byte[] sessionId;          // max 32 bytes
  41 
  42     // Constructs a new session ID ... perhaps for a rejoinable session
  43     SessionId(boolean isRejoinable, SecureRandom generator) {
  44         if (isRejoinable && (generator != null)) {
  45             sessionId = new RandomCookie(generator).randomBytes;
  46         } else {
  47             sessionId = new byte[0];
  48         }
  49     }
  50 
  51     // Constructs a session ID from a byte array (max size 32 bytes)
  52     SessionId(byte[] sessionId) {
  53         this.sessionId = sessionId.clone();
  54     }
  55 
  56     // Returns the length of the ID, in bytes
  57     int length() {
  58         return sessionId.length;
  59     }


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