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Signer.java
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/*
* Copyright (c) 1996, 2024, 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
* questions.
*/
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
* @since 1.1
*
* @deprecated This class is deprecated and subject to removal in a future
* version of Java SE. It has been replaced by
* {@code java.security.KeyStore}, the {@code java.security.cert} package,
* and {@code java.security.Principal}.
*/
@Deprecated(since="1.2", forRemoval=true)
@SuppressWarnings("removal")
public abstract class Signer extends Identity {
@java.io.Serial
private static final long serialVersionUID = -1763464102261361480L;
/**
* The signer's private key.
*
* @serial
*/
private PrivateKey privateKey;
/**
* Creates a {@code Signer}. This constructor should only be used for
* serialization.
*/
protected Signer() {
super();
}
/**
* Creates a {@code Signer} with the specified identity name.
*
* @param name the identity name.
*/
public Signer(String name) {
super(name);
}
/**
* Creates a {@code Signer} with the specified identity name and scope.
*
* @param name the identity name.
*
* @param scope the scope of the identity.
*
* @throws 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.
*
* @return this signer's private key, or {@code null} if the private key has
* not yet been set.
*/
public PrivateKey getPrivateKey() {
return privateKey;
}
/**
* Sets the key pair (public key and private key) for this {@code Signer}.
*
* @param pair an initialized key pair.
*
* @throws InvalidParameterException if the key pair is not
* properly initialized.
* @throws KeyException if the key pair cannot be set for any
* other reason.
*/
public final void setKeyPair(KeyPair pair)
throws InvalidParameterException, KeyException {
PublicKey pub = pair.getPublic();
PrivateKey priv = pair.getPrivate();
if (pub == null || priv == null) {
throw new InvalidParameterException();
}
setPublicKey(pub);
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 {@code Signer}.
*
* @return a string of information about the {@code Signer}.
*/
public String toString() {
return "[Signer]" + super.toString();
}
}