rsaprivatecrtkeyspec.java

来自「This is a resource based on j2me embedde」· Java 代码 · 共 149 行

/*
 * @(#)RSAPrivateCrtKeySpec.java	1.14 06/10/10
 *
 * Copyright  1990-2008 Sun Microsystems, Inc. All Rights Reserved.  
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER  
 *   
 * This program 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.   
 *   
 * This program 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 at /legal/license.txt).   
 *   
 * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa  
 * Clara, CA 95054 or visit www.sun.com if you need additional  
 * information or have any questions. 
 *
 */

package java.security.spec;

import java.math.BigInteger;

/**
 * This class specifies an RSA private key, as defined in the PKCS#1
 * standard, using the Chinese Remainder Theorem (CRT) information values for
 * efficiency.
 *
 * @author Jan Luehe
 *
 * @version 1.8 00/02/02
 *
 * @see java.security.Key
 * @see java.security.KeyFactory
 * @see KeySpec
 * @see PKCS8EncodedKeySpec
 * @see RSAPrivateKeySpec
 * @see RSAPublicKeySpec
 */

public class RSAPrivateCrtKeySpec extends RSAPrivateKeySpec {

    private BigInteger modulus;
    private BigInteger publicExponent;
    private BigInteger privateExponent;
    private BigInteger primeP;
    private BigInteger primeQ;
    private BigInteger primeExponentP;
    private BigInteger primeExponentQ;
    private BigInteger crtCoefficient;



   /**
    * Creates a new <code>RSAPrivateCrtKeySpec</code>
    * given the modulus, publicExponent, privateExponent,
    * primeP, primeQ, primeExponentP, primeExponentQ, and
    * crtCoefficient as defined in PKCS#1.
    *
    * @param modulus the modulus n
    * @param publicExponent the public exponent e
    * @param privateExponent the private exponent d
    * @param primeP the prime factor p of n
    * @param primeQ the prime factor q of n
    * @param primeExponentP this is d mod (p-1)
    * @param primeExponentQ this is d mod (q-1)
    * @param crtCoefficient the Chinese Remainder Theorem
    * coefficient q-1 mod p
    */
    public RSAPrivateCrtKeySpec(BigInteger modulus,
				BigInteger publicExponent,
				BigInteger privateExponent,
				BigInteger primeP,
				BigInteger primeQ,
				BigInteger primeExponentP,
				BigInteger primeExponentQ,
				BigInteger crtCoefficient) {
	super(modulus, privateExponent);
	this.publicExponent = publicExponent;
	this.primeP = primeP;
	this.primeQ = primeQ;
	this.primeExponentP = primeExponentP;
	this.primeExponentQ = primeExponentQ;
	this.crtCoefficient = crtCoefficient;
    }

    /**
     * Returns the public exponent.
     *
     * @return the public exponent
     */
    public BigInteger getPublicExponent() {
	return this.publicExponent;
    }

    /**
     * Returns the primeP.

     * @return the primeP
     */
    public BigInteger getPrimeP() {
	return this.primeP;
    }

    /**
     * Returns the primeQ.
     *
     * @return the primeQ
     */
    public BigInteger getPrimeQ() {
	return this.primeQ;
    }

    /**
     * Returns the primeExponentP.
     *
     * @return the primeExponentP
     */
    public BigInteger getPrimeExponentP() {
	return this.primeExponentP;
    }

    /**
     * Returns the primeExponentQ.
     *
     * @return the primeExponentQ
     */
    public BigInteger getPrimeExponentQ() {
	return this.primeExponentQ;
    }

    /**
     * Returns the crtCoefficient.
     *
     * @return the crtCoefficient
     */
    public BigInteger getCrtCoefficient() {
	return this.crtCoefficient;
    }
}