001 /* Signer.java --- Signer Class
002 Copyright (C) 1999, 2003, Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
010
011 GNU Classpath is distributed in the hope that it will be useful, but
012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
015
016 You should have received a copy of the GNU General Public License
017 along with GNU Classpath; see the file COPYING. If not, write to the
018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
032 module. An independent module is a module which is not derived from
033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038 package java.security;
039
040 /**
041 * <code>Signer</code> is a subclass of {@link Identity}. It is used to store a
042 * digital signature key with an <i>Identity</i>.
043 *
044 * @author Mark Benvenuto (ivymccough@worldnet.att.net)
045 * @deprecated Replaced by <code>java.security.KeyStore</code>, the
046 * <code>java.security.cert</code> package, and <code>java.security.Principal</code>.
047 */
048 public abstract class Signer extends Identity
049 {
050 private static final long serialVersionUID = -1763464102261361480L;
051 private PrivateKey privateKey = null;
052
053 /** Trivial constructor for serialization purposes. */
054 protected Signer()
055 {
056 }
057
058 /**
059 * Constructs a new instance of <code>Signer</code> with the specified
060 * identity name.
061 *
062 * @param name
063 * the name of the identity to use.
064 */
065 public Signer(String name)
066 {
067 super(name);
068 }
069
070 /**
071 * Constructs a new instance of <code>Signer</code> with the specified
072 * identity name and {@link IdentityScope}.
073 *
074 * @param name
075 * the name of the the identity to use.
076 * @param scope
077 * the {@link IdentityScope} to use.
078 * @throws KeyManagementException
079 * if a duplicate identity <code>name</code> exists within
080 * <code>scope</code>.
081 */
082 public Signer(String name, IdentityScope scope) throws KeyManagementException
083 {
084 super(name, scope);
085 }
086
087 /**
088 * Returns the private key of this <code>Signer</code>.
089 *
090 * @returns the private key of this <code>Signer</code>.
091 * @throws SecurityException
092 * if a {@link SecurityManager} is installed which disallows this
093 * operation.
094 */
095 public PrivateKey getPrivateKey()
096 {
097 SecurityManager sm = System.getSecurityManager();
098 if (sm != null)
099 sm.checkSecurityAccess("getSignerPrivateKey");
100
101 return privateKey;
102 }
103
104 /**
105 * Specifies the {@link KeyPair} associated with this <code>Signer</code>.
106 *
107 * @param pair
108 * the {@link KeyPair} to use.
109 * @throws InvalidParameterException
110 * if the key-pair is invalid.
111 * @throws KeyException
112 * if any another key-related error occurs.
113 * @throws SecurityException
114 * if a {@link SecurityManager} is installed which disallows this
115 * operation.
116 */
117 public final void setKeyPair(KeyPair pair)
118 throws InvalidParameterException, KeyException
119 {
120 SecurityManager sm = System.getSecurityManager();
121 if (sm != null)
122 sm.checkSecurityAccess("setSignerKeyPair");
123
124 try
125 {
126 if (pair.getPublic() != null)
127 setPublicKey(pair.getPublic());
128 else
129 throw new InvalidParameterException();
130
131 }
132 catch (KeyManagementException kme)
133 {
134 throw new KeyException();
135 }
136
137 if (pair.getPrivate() != null)
138 privateKey = pair.getPrivate();
139 else
140 throw new InvalidParameterException();
141 }
142
143 /** @returns a string representing this <code>Signer</code>. */
144 public String toString()
145 {
146 return (getName() + ": " + privateKey);
147 }
148 }