JAVA与.NET DES加密解密

项目需要在两个系统间采用DES加密，一个系统为JAVA开发的，另外一个.Net开发的

在网上找了很多写法但加密出的数据两个系统都无法匹配，

在做了小修改以后终于可以用了，已经测试过

JAVA版本

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

public class Des {
    private byte[] desKey;  

    //解密数据
    public static String decrypt(String message,String key) throws Exception {  

            byte[] bytesrc =convertHexString(message);
            Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
            DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));
            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
            SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
            IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));  

            cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);        

            byte[] retByte = cipher.doFinal(bytesrc);
            return new String(retByte);
    }  

    public static byte[] encrypt(String message, String key)
            throws Exception {
        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");  

        DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));  

        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
        IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));
        cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);  

        return cipher.doFinal(message.getBytes("UTF-8"));
    }  

    public static byte[] convertHexString(String ss)
    {
    byte digest[] = new byte[ss.length() / 2];
    for(int i = 0; i < digest.length; i++)
    {
    String byteString = ss.substring(2 * i, 2 * i + 2);
    int byteValue = Integer.parseInt(byteString, 16);
    digest[i] = (byte)byteValue;
    }   

    return digest;
    }   

    public static void main(String[] args) throws Exception {
        String key = "12345678";
        String value="test1234 ";
        String jiami=java.net.URLEncoder.encode(value, "utf-8").toLowerCase();  

        System.out.println("加密数据:"+jiami);
        String a=toHexString(encrypt(jiami, key)).toUpperCase();  

        System.out.println("加密后的数据为:"+a);
        String b=java.net.URLDecoder.decode(decrypt(a,key), "utf-8") ;
        System.out.println("解密后的数据:"+b);  

    }  

    public static String toHexString(byte b[]) {
        StringBuffer hexString = new StringBuffer();
        for (int i = 0; i < b.length; i++) {
            String plainText = Integer.toHexString(0xff & b[i]);
            if (plainText.length() < 2)
                plainText = "0" + plainText;
            hexString.append(plainText);
        }  

        return hexString.toString();
    }  

}

.NET版本

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Security.Cryptography;
using System.IO;
using System.Text;
public class TestDes{
    //cookies加密密钥
    public static string DES_Key = "12345678"; 

    #region DESEnCode DES加密
    public static string DESEnCode(string pToEncrypt, string sKey)
    {
        pToEncrypt = HttpContext.Current.Server.UrlEncode(pToEncrypt);
        DESCryptoServiceProvider des = new DESCryptoServiceProvider();
        byte[] inputByteArray = Encoding.GetEncoding("UTF-8").GetBytes(pToEncrypt);  

        des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
        des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
        MemoryStream ms = new MemoryStream();
        CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);  

        cs.Write(inputByteArray, 0, inputByteArray.Length);
        cs.FlushFinalBlock();  

        StringBuilder ret = new StringBuilder();
        foreach (byte b in ms.ToArray())
        {
            ret.AppendFormat("{0:X2}", b);
        }
        ret.ToString();
        return ret.ToString();
    }
    #endregion 

    #region DESDeCode DES解密
    public static string DESDeCode(string pToDecrypt, string sKey)
    {
        //    HttpContext.Current.Response.Write(pToDecrypt + "<br>" + sKey);
        //    HttpContext.Current.Response.End();
        DESCryptoServiceProvider des = new DESCryptoServiceProvider();  

        byte[] inputByteArray = new byte[pToDecrypt.Length / 2];
        for (int x = 0; x < pToDecrypt.Length / 2; x++)
        {
            int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
            inputByteArray[x] = (byte)i;
        }  

        des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
        des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
        MemoryStream ms = new MemoryStream();
        CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
        cs.Write(inputByteArray, 0, inputByteArray.Length);
        cs.FlushFinalBlock();  

        StringBuilder ret = new StringBuilder();  

        return HttpContext.Current.Server.UrlDecode(System.Text.Encoding.Default.GetString(ms.ToArray()));
    }
    #endregion  

      public TestDes()
    {
        //
        // TODO: 在此处添加构造函数逻辑
        //
    }
}