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/*
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* Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.security.spec;
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import java.math.BigInteger;
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import java.security.spec.AlgorithmParameterSpec;
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/**
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* This class specifies the set of parameters used to generate an RSA
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* key pair.
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*
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* @author Jan Luehe
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*
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* @see java.security.KeyPairGenerator#initialize(java.security.spec.AlgorithmParameterSpec)
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*
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* @since 1.3
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*/
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public class RSAKeyGenParameterSpec implements AlgorithmParameterSpec {
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private int keysize;
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private BigInteger publicExponent;
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private AlgorithmParameterSpec keyParams;
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/**
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* The public-exponent value F0 = 3.
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*/
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public static final BigInteger F0 = BigInteger.valueOf(3);
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/**
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* The public exponent-value F4 = 65537.
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*/
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public static final BigInteger F4 = BigInteger.valueOf(65537);
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/**
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* Constructs a new {@code RSAKeyGenParameterSpec} object from the
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* given keysize, public-exponent value, and no key parameters.
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*
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* @param keysize the modulus size (specified in number of bits)
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* @param publicExponent the public exponent
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*/
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public RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent) {
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this(keysize, publicExponent, null);
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}
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/**
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* Constructs a new {@code RSAKeyGenParameterSpec} object from the
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* given keysize, public-exponent value, and key parameters.
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*
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* @param keysize the modulus size (specified in number of bits)
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* @param publicExponent the public exponent
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* @param keyParams the key parameters
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* @since 11
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*/
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public RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent,
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AlgorithmParameterSpec keyParams) {
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this.keysize = keysize;
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this.publicExponent = publicExponent;
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this.keyParams = keyParams;
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}
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/**
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* Returns the keysize.
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*
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* @return the keysize.
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*/
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public int getKeysize() {
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return keysize;
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}
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/**
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* Returns the public-exponent value.
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*
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* @return the public-exponent value.
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*/
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public BigInteger getPublicExponent() {
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return publicExponent;
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}
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/**
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* Returns the parameters to be associated with key.
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*
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* @return the associated parameters, may be null if
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* not present
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* @since 11
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*/
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public AlgorithmParameterSpec getKeyParams() {
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return keyParams;
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}
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}
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