DEC解密 通过java的key来生成对应于.NET的key和VI

 原加密方式是使用.net进行的加密，其中使用了key和IV两个量，现使用java代码使用key和Iv对其进行解密
代码亲测可以使用。
 

import java.security.Key;
import java.security.spec.AlgorithmParameterSpec;

import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import javax.crypto.spec.IvParameterSpec;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class CryptoTools {

    private static final byte[] DESkey = "12345678".getBytes();

    private static final byte[] DESIV = "12345678".getBytes();// 设置向量，略去

    static AlgorithmParameterSpec iv = null;// 加密算法的参数接口，IvParameterSpec是它的一个实现
    private static Key key = null;

    public CryptoTools() throws Exception {
        DESKeySpec keySpec = new DESKeySpec(DESkey);// 设置密钥参数
        iv = new IvParameterSpec(DESIV);// 设置向量
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");// 获得密钥工厂
        key = keyFactory.generateSecret(keySpec);// 得到密钥对象

    }

    public String encode(String data) throws Exception {
        Cipher enCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");// 得到加密对象Cipher
        enCipher.init(Cipher.ENCRYPT_MODE, key, iv);// 设置工作模式为加密模式，给出密钥和向量
        byte[] pasByte = enCipher.doFinal(data.getBytes("utf-8"));
        BASE64Encoder base64Encoder = new BASE64Encoder();
        return base64Encoder.encode(pasByte);
    }

    public String decode(String data) throws Exception {
        Cipher deCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
        deCipher.init(Cipher.DECRYPT_MODE, key, iv);
        BASE64Decoder base64Decoder = new BASE64Decoder();
        byte[] pasByte = deCipher.doFinal(base64Decoder.decodeBuffer(data));
        return new String(pasByte, "UTF-8");
    }

    public static void main(String[] args) throws Exception {

        CryptoTools tools = new CryptoTools();
        System.out.println("加密:" + tools.encode("天下"));
        System.out.println("解密:" + tools.decode(tools.encode("天下")));
    }

}