java.security.spec.ECPrivateKeySpec Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package java.security.spec;
import java.math.BigInteger;
/**
* The parameters specifying an Elliptic Curve (EC) private key.
*/
public class ECPrivateKeySpec implements KeySpec {
// Private value associated with this key
private final BigInteger s;
// Elliptic Curve domain parameters associated with this key
private final ECParameterSpec params;
/**
* Creates a new {@code ECPrivateKeySpec} with the specified private value
* {@code S} and parameter specification.
*
* @param s
* the private value {@code S}.
* @param params
* the domain parameter specification.
*/
public ECPrivateKeySpec(BigInteger s, ECParameterSpec params) {
this.s = s;
this.params = params;
// throw NullPointerException if s or params is null
if (this.s == null) {
throw new NullPointerException("s == null");
}
if (this.params == null) {
throw new NullPointerException("params == null");
}
}
/**
* Returns the domain parameter specification.
*
* @return the domain parameter specification.
*/
public ECParameterSpec getParams() {
return params;
}
/**
* Returns the private value {@code S}.
*
* @return the private value {@code S}.
*/
public BigInteger getS() {
return s;
}
}