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  
        //  
    }  
}