151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/* 251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. 351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is free software; you can redistribute it and/or modify it 651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * under the terms of the GNU General Public License version 2 only, as 751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * published by the Free Software Foundation. Oracle designates this 851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * particular file as subject to the "Classpath" exception as provided 951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * by Oracle in the LICENSE file that accompanied this code. 1051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is distributed in the hope that it will be useful, but WITHOUT 1251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * version 2 for more details (a copy is included in the LICENSE file that 1551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * accompanied this code). 1651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * You should have received a copy of the GNU General Public License version 1851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2 along with this work; if not, write to the Free Software Foundation, 1951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * or visit www.oracle.com if you need additional information or have any 2351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * questions. 2451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 2551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 2651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskipackage java.security; 2751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 2851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiimport java.io.*; 2951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiimport java.security.cert.Certificate; 3051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiimport java.security.cert.CertPath; 3151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiimport java.security.cert.X509Extension; 3251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiimport java.util.Date; 3351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiimport java.util.List; 3451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 3551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/** 3651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This class encapsulates information about a signed timestamp. 3751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * It is immutable. 3851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * It includes the timestamp's date and time as well as information about the 3951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Timestamping Authority (TSA) which generated and signed the timestamp. 4051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 4151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @since 1.5 4251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @author Vincent Ryan 4351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 4451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskipublic final class Timestamp implements Serializable { 4651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private static final long serialVersionUID = -5502683707821851294L; 4851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 5051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * The timestamp's date and time 5151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 5251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @serial 5351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 5451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private Date timestamp; 5551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 5651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 5751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * The TSA's certificate path. 5851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 5951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @serial 6051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 6151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private CertPath signerCertPath; 6251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 6351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /* 6451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Hash code for this timestamp. 6551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 6651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private transient int myhash = -1; 6751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 6851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 6951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Constructs a Timestamp. 7051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 7151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param timestamp is the timestamp's date and time. It must not be null. 7251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param signerCertPath is the TSA's certificate path. It must not be null. 7351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @throws NullPointerException if timestamp or signerCertPath is null. 7451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 7551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public Timestamp(Date timestamp, CertPath signerCertPath) { 7651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (timestamp == null || signerCertPath == null) { 7751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throw new NullPointerException(); 7851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 7951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this.timestamp = new Date(timestamp.getTime()); // clone 8051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this.signerCertPath = signerCertPath; 8151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 8251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 8351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 8451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Returns the date and time when the timestamp was generated. 8551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 8651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return The timestamp's date and time. 8751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 8851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public Date getTimestamp() { 8951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return new Date(timestamp.getTime()); // clone 9051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 9151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 9251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 9351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Returns the certificate path for the Timestamping Authority. 9451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 9551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return The TSA's certificate path. 9651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 9751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public CertPath getSignerCertPath() { 9851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return signerCertPath; 9951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 10051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 10151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 10251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Returns the hash code value for this timestamp. 10351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * The hash code is generated using the date and time of the timestamp 10451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * and the TSA's certificate path. 10551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 10651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return a hash code value for this timestamp. 10751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 10851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public int hashCode() { 10951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (myhash == -1) { 11051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski myhash = timestamp.hashCode() + signerCertPath.hashCode(); 11151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 11251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return myhash; 11351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 11451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 11551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 11651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Tests for equality between the specified object and this 11751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * timestamp. Two timestamps are considered equal if the date and time of 11851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * their timestamp's and their signer's certificate paths are equal. 11951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 12051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param obj the object to test for equality with this timestamp. 12151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 12251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return true if the timestamp are considered equal, false otherwise. 12351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 12451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public boolean equals(Object obj) { 12551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (obj == null || (!(obj instanceof Timestamp))) { 12651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return false; 12751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 12851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski Timestamp that = (Timestamp)obj; 12951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 13051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (this == that) { 13151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return true; 13251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 13351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return (timestamp.equals(that.getTimestamp()) && 13451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski signerCertPath.equals(that.getSignerCertPath())); 13551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 13651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 13751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 13851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Returns a string describing this timestamp. 13951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 14051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return A string comprising the date and time of the timestamp and 14151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * its signer's certificate. 14251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 14351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public String toString() { 14451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski StringBuffer sb = new StringBuffer(); 14551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski sb.append("("); 14651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski sb.append("timestamp: " + timestamp); 14751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski List<? extends Certificate> certs = signerCertPath.getCertificates(); 14851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (!certs.isEmpty()) { 14951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski sb.append("TSA: " + certs.get(0)); 15051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } else { 15151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski sb.append("TSA: <empty>"); 15251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 15351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski sb.append(")"); 15451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return sb.toString(); 15551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 15651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 15751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski // Explicitly reset hash code value to -1 15851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private void readObject(ObjectInputStream ois) 15951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throws IOException, ClassNotFoundException { 16051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski ois.defaultReadObject(); 16151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski myhash = -1; 16251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski timestamp = new Date(timestamp.getTime()); 16351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 16451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski} 165