DSAPrivateKey.java revision 0
/*
* Copyright 1996-2002 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
/**
* A PKCS#8 private key for the Digital Signature Algorithm.
*
* @author Benjamin Renaud
*
*
* @see DSAPublicKey
* @see AlgIdDSA
* @see DSA
*/
public final class DSAPrivateKey extends PKCS8Key
/** use serialVersionUID from JDK 1.1. for interoperability */
private static final long serialVersionUID = -3244453684193605938L;
/* the private key */
private BigInteger x;
/*
* Keep this constructor for backwards compatibility with JDK1.1.
*/
public DSAPrivateKey() {
}
/**
* Make a DSA private key out of a private key and three parameters.
*/
BigInteger q, BigInteger g)
throws InvalidKeyException {
this.x = x;
try {
x.toByteArray()).toByteArray();
encode();
} catch (IOException e) {
"could not DER encode x: " + e.getMessage());
throw ike;
}
}
/**
* Make a DSA private key from its DER encoding (PKCS #8).
*/
clearOldKey();
}
/**
* Returns the DSA parameters associated with this key, or null if the
* parameters could not be parsed.
*/
try {
} else {
return null;
}
}
} catch (InvalidParameterSpecException e) {
return null;
}
}
/**
* Get the raw private key, x, without the parameters.
*
* @see getParameters
*/
public BigInteger getX() {
return x;
}
private void clearOldKey() {
int i;
if (this.encodedKey != null) {
this.encodedKey[i] = (byte)0x00;
}
}
this.key[i] = (byte)0x00;
}
}
}
}
protected void parseKeyBits() throws InvalidKeyException {
try {
x = in.getBigInteger();
} catch (IOException e) {
throw ike;
}
}
}