javax.crypto.spec.DHParameterSpec Maven / Gradle / Ivy
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* 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 javax.crypto.spec;
import java.math.BigInteger;
import java.security.spec.AlgorithmParameterSpec;
/**
* The algorithm parameter specification for the Diffie-Hellman algorithm.
*/
public class DHParameterSpec implements AlgorithmParameterSpec {
private final BigInteger p;
private final BigInteger g;
private final int l;
/**
* Creates a new DHParameterSpec instance with the specified
* prime modulus and base generator.
*
* @param p
* the prime modulus.
* @param g
* the base generator.
*/
public DHParameterSpec(BigInteger p, BigInteger g) {
this.p = p;
this.g = g;
this.l = 0;
}
/**
* Creates a new DHParameterSpec instance with the specified
* prime modulus, base generator and size (in bits) of the
* random exponent.
*
* @param p
* the prime modulus.
* @param g
* the base generator.
* @param l
* the size of the random exponent (in bits).
*/
public DHParameterSpec(BigInteger p, BigInteger g, int l) {
this.p = p;
this.g = g;
this.l = l;
}
/**
* Returns the prime modulus of this parameter specification.
*
* @return the prime modulus.
*/
public BigInteger getP() {
return p;
}
/**
* Returns the base generator of this parameter specification.
*
* @return the base generator.
*/
public BigInteger getG() {
return g;
}
/**
* Returns the size (in bits) of the random exponent.
*
* @return the size (in bits) of the random exponent.
*/
public int getL() {
return l;
}
}