/*
* Copyright (c) 2005, 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 sun.security.provider;
import java.math.BigInteger;
import java.security.KeyRep;
import java.security.InvalidKeyException;
/**
* An X.509 public key for the Digital Signature Algorithm.
*
* The difference between DSAPublicKeyImpl and DSAPublicKey is that
* DSAPublicKeyImpl calls writeReplace with KeyRep, and DSAPublicKey
* calls writeObject.
*
* See the comments in DSAKeyFactory, 4532506, and 6232513.
*
*/
public final class DSAPublicKeyImpl extends DSAPublicKey {
private static final long serialVersionUID = 7819830118247182730L;
/**
* Make a DSA public key out of a public key and three parameters.
* The p, q, and g parameters may be null, but if so, parameters will need
* to be supplied from some other source before this key can be used in
* cryptographic operations. PKIX RFC2459bis explicitly allows DSA public
* keys without parameters, where the parameters are provided in the
* issuer's DSA public key.
*
* @param y the actual key bits
* @param p DSA parameter p, may be null if all of p, q, and g are null.
* @param q DSA parameter q, may be null if all of p, q, and g are null.
* @param g DSA parameter g, may be null if all of p, q, and g are null.
*/
public DSAPublicKeyImpl(BigInteger y, BigInteger p, BigInteger q,
BigInteger g)
throws InvalidKeyException {
super(y, p, q, g);
}
/**
* Make a DSA public key from its DER encoding (X.509).
*/
public DSAPublicKeyImpl(byte[] encoded) throws InvalidKeyException {
super(encoded);
}
protected Object writeReplace() throws java.io.ObjectStreamException {
return new KeyRep(KeyRep.Type.PUBLIC,
getAlgorithm(),
getFormat(),
getEncoded());
}
}