/*
* Copyright (c) 1996, 2006, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
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*/
package java.security;
import java.io.*;
/**
* This class is used to represent an Identity that can also digitally
* sign data.
*
* <p>The management of a signer's private keys is an important and
* sensitive issue that should be handled by subclasses as appropriate
* to their intended use.
*
* @see Identity
*
* @author Benjamin Renaud
*
* @deprecated This class is no longer used. Its functionality has been
* replaced by <code>java.security.KeyStore</code>, the
* <code>java.security.cert</code> package, and
* <code>java.security.Principal</code>.
*/
@Deprecated
public abstract class Signer extends Identity {
private static final long serialVersionUID = -1763464102261361480L;
/**
* The signer's private key.
*
* @serial
*/
private PrivateKey privateKey;
/**
* Creates a signer. This constructor should only be used for
* serialization.
*/
protected Signer() {
super();
}
/**
* Creates a signer with the specified identity name.
*
* @param name the identity name.
*/
public Signer(String name) {
super(name);
}
/**
* Creates a signer with the specified identity name and scope.
*
* @param name the identity name.
*
* @param scope the scope of the identity.
*
* @exception KeyManagementException if there is already an identity
* with the same name in the scope.
*/
public Signer(String name, IdentityScope scope)
throws KeyManagementException {
super(name, scope);
}
/**
* Returns this signer's private key.
*
* <p>First, if there is a security manager, its <code>checkSecurityAccess</code>
* method is called with <code>"getSignerPrivateKey"</code>
* as its argument to see if it's ok to return the private key.
*
* @return this signer's private key, or null if the private key has
* not yet been set.
*
* @exception SecurityException if a security manager exists and its
* <code>checkSecurityAccess</code> method doesn't allow
* returning the private key.
*
* @see SecurityManager#checkSecurityAccess
*/
public PrivateKey getPrivateKey() {
check("getSignerPrivateKey");
return privateKey;
}
/**
* Sets the key pair (public key and private key) for this signer.
*
* <p>First, if there is a security manager, its <code>checkSecurityAccess</code>
* method is called with <code>"setSignerKeyPair"</code>
* as its argument to see if it's ok to set the key pair.
*
* @param pair an initialized key pair.
*
* @exception InvalidParameterException if the key pair is not
* properly initialized.
* @exception KeyException if the key pair cannot be set for any
* other reason.
* @exception SecurityException if a security manager exists and its
* <code>checkSecurityAccess</code> method doesn't allow
* setting the key pair.
*
* @see SecurityManager#checkSecurityAccess
*/
public final void setKeyPair(KeyPair pair)
throws InvalidParameterException, KeyException {
check("setSignerKeyPair");
final PublicKey pub = pair.getPublic();
PrivateKey priv = pair.getPrivate();
if (pub == null || priv == null) {
throw new InvalidParameterException();
}
try {
AccessController.doPrivileged(
new PrivilegedExceptionAction<Void>() {
public Void run() throws KeyManagementException {
setPublicKey(pub);
return null;
}
});
} catch (PrivilegedActionException pae) {
throw (KeyManagementException) pae.getException();
}
privateKey = priv;
}
String printKeys() {
String keys = "";
PublicKey publicKey = getPublicKey();
if (publicKey != null && privateKey != null) {
keys = "\tpublic and private keys initialized";
} else {
keys = "\tno keys";
}
return keys;
}
/**
* Returns a string of information about the signer.
*
* @return a string of information about the signer.
*/
public String toString() {
return "[Signer]" + super.toString();
}
private static void check(String directive) {
SecurityManager security = System.getSecurityManager();
if (security != null) {
security.checkSecurityAccess(directive);
}
}
}