rsaprivatekey.java

说明： 1、里面有什么： 1.1、org.bouncycastle.*下的所有软件是bouncycastle组织开发的软件包 1.2、org.infosecurity.*下的软件包括

package org.infosecurity.cryptography;

/**
 * <p>Title: RSA的私钥类 </p>
 * <p>Description: RSA的私钥类 </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: 中信信息安全组织(CISO)</p>
 * @author 张荣华
 * @version 1.0.2003.0704
 */

import java.math.BigInteger;
import java.security.SecureRandom;
import org.bouncycastle.asn1.*;
import org.bouncycastle.asn1.pkcs.*;

public class RSAPrivateKey extends RSAPublicKey{
    private BigInteger  d;
    private BigInteger  p;
    private BigInteger  q;
    private BigInteger  dP;
    private BigInteger  dQ;
    private BigInteger  qInv;

    /**
     *
     */
    public RSAPrivateKey(
        BigInteger  modulus,
        BigInteger  publicExponent,
        BigInteger  privateExponent,
        BigInteger  p,
        BigInteger  q,
        BigInteger  dP,
        BigInteger  dQ,
        BigInteger  qInv)
    {
        super(modulus,publicExponent);
        this.d  = privateExponent;
        this.p  = p;
        this.q  = q;
        this.dP = dP;
        this.dQ = dQ;
        this.qInv = qInv;
    }
    public BigInteger getPrivateExponent()
    {
        return d;
    }
    public BigInteger getPublicExponent()
    {
        return super.getExponent();
    }
    public BigInteger getModulus()
    {
        return super.getModulus();
    }
    public BigInteger getP()
    {
        return p;
    }

    public BigInteger getQ()
    {
        return q;
    }

    public BigInteger getDP()
    {
        return dP;
    }

    public BigInteger getDQ()
    {
        return dQ;
    }

    public BigInteger getQInv()
    {
        return qInv;
    }
    /**
     * 进行DER编码
     * @author 张荣华
     */
    public DERObject getDERObject()
    {
        ASN1EncodableVector  v = new ASN1EncodableVector();
        v.add(new DERInteger(0));                    /* 版本为0 */
        v.add(new DERInteger(getModulus()));
        v.add(new DERInteger(getPublicExponent()));
        v.add(new DERInteger(getPrivateExponent()));
        v.add(new DERInteger(getP()));
        v.add(new DERInteger(getQ()));
        v.add(new DERInteger(getDP()));
        v.add(new DERInteger(getQInv()));
        v.add(new DERInteger(getQInv()));
        return new DERSequence(v);
    }
}