/*
 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */
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
 *
 * @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}
 * or {@code params} 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;
 }
}