rsapublickey.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的公钥类 </p>
 * <p>Description: RSA的公钥结构 </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 RSAPublicKey extends Object implements java.io.Serializable {

    private BigInteger      modulus;
    private BigInteger      exponent;

    public RSAPublicKey(
            BigInteger  modulus,
            BigInteger  exponent)
    {
        this.modulus = modulus;
        this.exponent = exponent;
    }

    public BigInteger getModulus()
    {
        return modulus;
    }

    public BigInteger getExponent()
    {
        return exponent;
    }
    public void setModules(BigInteger  modulus)
    {
        this.modulus = modulus;
    }
    public void setExponent(BigInteger  exponent)
    {
        this.exponent = exponent;
    }
    /**
     * 进行DER编码
     * @author 张荣华
     */
    public DERObject getDERObject()
    {
        ASN1EncodableVector  v = new ASN1EncodableVector();
        v.add(new DERInteger(getModulus()));
        v.add(new DERInteger(getExponent()));
        return new DERSequence(v);
    }
    public static void main(String[] args) {
        //RSAPublicKey puk = new RSAPublicKey();
    }
}