JAVA与.NET DES加密解密

末蓝、 2021-11-01 17:28 426阅读 0赞

前几天做了个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    
        //    
    \}    
\}

转载于:https://www.cnblogs.com/love-summer/archive/2011/11/01/2231043.html