/*
* @(#)ECPrivateKeySpec.java 1.4 05/11/17
*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package java.security.spec;
import java.math.BigInteger;
/**
* This immutable class specifies an elliptic curve private key with
* its associated parameters.
*
* @see KeySpec
* @see ECParameterSpec
*
* @author Valerie Peng
* @version 1.4, 11/17/05
*
* @since 1.5
*/
public class ECPrivateKeySpec implements KeySpec {
private BigInteger s;
private ECParameterSpec params;
/**
* Creates a new ECPrivateKeySpec with the specified
* parameter values.
* @param s the private value.
* @param params the associated elliptic curve domain
* parameters.
* @exception NullPointerException if <code>s</code>
* or <code>params</code> is null.
*/
public ECPrivateKeySpec(BigInteger s, ECParameterSpec params) {
if (s == null) {
throw new NullPointerException("s is null");
}
if (params == null) {
throw new NullPointerException("params is null");
}
this.s = s;
this.params = params;
}
/**
* Returns the private value S.
* @return the private value S.
*/
public BigInteger getS() {
return s;
}
/**
* Returns the associated elliptic curve domain
* parameters.
* @return the EC domain parameters.
*/
public ECParameterSpec getParams() {
return params;
}
}