/* * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package javax.crypto.spec;import java.math.BigInteger;import java.security.spec.AlgorithmParameterSpec;/** * This class specifies the set of parameters used for generating * Diffie-Hellman (system) parameters for use in Diffie-Hellman key * agreement. This is typically done by a central * authority. * * <p> The central authority, after computing the parameters, must send this * information to the parties looking to agree on a secret key. * * @author Jan Luehe * * @see DHParameterSpec * @since 1.4 */public class DHGenParameterSpec implements AlgorithmParameterSpec { // The size in bits of the prime modulus private int primeSize; // The size in bits of the random exponent (private value) private int exponentSize; /** * Constructs a parameter set for the generation of Diffie-Hellman * (system) parameters. The constructed parameter set can be used to * initialize an * {@link java.security.AlgorithmParameterGenerator AlgorithmParameterGenerator} * object for the generation of Diffie-Hellman parameters. * * @param primeSize the size (in bits) of the prime modulus. * @param exponentSize the size (in bits) of the random exponent. */ public DHGenParameterSpec(int primeSize, int exponentSize) { this.primeSize = primeSize; this.exponentSize = exponentSize; } /** * Returns the size in bits of the prime modulus. * * @return the size in bits of the prime modulus */ public int getPrimeSize() { return this.primeSize; } /** * Returns the size in bits of the random exponent (private value). * * @return the size in bits of the random exponent (private value) */ public int getExponentSize() { return this.exponentSize; }}
/*
* Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.crypto.spec;
import java.math.BigInteger;
import java.security.spec.AlgorithmParameterSpec;
/**
* This class specifies the set of parameters used for generating
* Diffie-Hellman (system) parameters for use in Diffie-Hellman key
* agreement. This is typically done by a central
* authority.
*
* <p> The central authority, after computing the parameters, must send this
* information to the parties looking to agree on a secret key.
*
* @author Jan Luehe
*
* @see DHParameterSpec
* @since 1.4
*/
public class DHGenParameterSpec implements AlgorithmParameterSpec {
// The size in bits of the prime modulus
private int primeSize;
// The size in bits of the random exponent (private value)
private int exponentSize;
/**
* Constructs a parameter set for the generation of Diffie-Hellman
* (system) parameters. The constructed parameter set can be used to
* initialize an
* {@link java.security.AlgorithmParameterGenerator AlgorithmParameterGenerator}
* object for the generation of Diffie-Hellman parameters.
*
* @param primeSize the size (in bits) of the prime modulus.
* @param exponentSize the size (in bits) of the random exponent.
*/
public DHGenParameterSpec(int primeSize, int exponentSize) {
this.primeSize = primeSize;
this.exponentSize = exponentSize;
}
/**
* Returns the size in bits of the prime modulus.
*
* @return the size in bits of the prime modulus
*/
public int getPrimeSize() {
return this.primeSize;
}
/**
* Returns the size in bits of the random exponent (private value).
*
* @return the size in bits of the random exponent (private value)
*/
public int getExponentSize() {
return this.exponentSize;
}
}