DES加密与解密。C#与java得出的密文不一样

Question

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;using System.Security.Cryptography;
using System.IO;namespace MD5Trance
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }        private void button1_Click(object sender, EventArgs e)
        {
            string md5 = textBox1.Text;
            md5 = Encrypt(md5, "12345678");
            textBox2.Text = md5;                    }        /// <summary>
        /// DES加密字符串
        /// </summary>
        /// <param name="encryptString">待加密的字符串</param>
        /// <param name="encryptKey">加密密钥,要求为8位</param>
        /// <returns>加密成功返回加密后的字符串，失败返回源串</returns>
        public static string Encrypt(string encryptString, string encryptKey)
        {
            try
            {
                byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));
                byte[] rgbIV = rgbKey;//是否有问题
                byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
                DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
                MemoryStream mStream = new MemoryStream();
                CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
                cStream.Write(inputByteArray, 0, inputByteArray.Length);
                cStream.FlushFinalBlock();
                return Convert.ToBase64String(mStream.ToArray());
            }
            catch
            {
                return encryptString;
            }
        }        /// <summary>
        /// DES解密字符串
        /// </summary>
        /// <param name="decryptString">待解密的字符串</param>
        /// <param name="decryptKey">解密密钥,要求为8位,和加密密钥相同</param>
        /// <returns>解密成功返回解密后的字符串，失败返源串</returns>
        public static string Decrypt(string decryptString, string decryptKey)
        {
            try
            {
                byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey);
                byte[] rgbIV = rgbKey;
                byte[] inputByteArray = Convert.FromBase64String(decryptString);
                DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
                MemoryStream mStream = new MemoryStream();
                CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
                cStream.Write(inputByteArray, 0, inputByteArray.Length);
                cStream.FlushFinalBlock();
                return Encoding.UTF8.GetString(mStream.ToArray());
            }
            catch
            {
                return decryptString;
            }
        }        private void button2_Click(object sender, EventArgs e)
        {
            string ss = textBox2.Text;
            textBox3.Text = Decrypt(ss, "12345678");
        }    }
}
import java.security.Key;
import java.security.SecureRandom;import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;public class DES {  Key key;  public DES(String str) {
    setKey(str);//生成密匙
  }  public DES() {
    setKey("12345678");
  }  /**
   * 根据参数生成KEY
   */
  public void setKey(String strKey) {
      try {
        KeyGenerator _generator = KeyGenerator.getInstance("DES");
        _generator.init(new SecureRandom(strKey.getBytes()));
        this.key = _generator.generateKey();
        _generator = null;
      } catch (Exception e) {
        throw new RuntimeException(
            "Error initializing SqlMap class. Cause: " + e);
      }
  }  /**
   * 加密String明文输入,String密文输出
   */
  public String getEncString(String strMing) {
      byte[] byteMi = null;
      byte[] byteMing = null;
      String strMi = "";
      BASE64Encoder base64en = new BASE64Encoder();
      try {
        byteMing = strMing.getBytes("UTF8");
        byteMi = this.getEncCode(byteMing);
        strMi = base64en.encode(byteMi);
      } catch (Exception e) {
        throw new RuntimeException(
            "Error initializing SqlMap class. Cause: " + e);
      } finally {
        base64en = null;
        byteMing = null;
        byteMi = null;
      }
      return strMi;
  }  /**
   * 解密 以String密文输入,String明文输出
   * @param strMi
   * @return
   */
  public String getDesString(String strMi) {
      BASE64Decoder base64De = new BASE64Decoder();
      byte[] byteMing = null;
      byte[] byteMi = null;
      String strMing = "";
      try {
        byteMi = base64De.decodeBuffer(strMi);
        byteMing = this.getDesCode(byteMi);
        strMing = new String(byteMing, "UTF8");
      } catch (Exception e) {
        throw new RuntimeException(
            "Error initializing SqlMap class. Cause: " + e);
      } finally {
        base64De = null;
        byteMing = null;
        byteMi = null;
      }
      return strMing;
  }  /**
   * 加密以byte[]明文输入,byte[]密文输出
   * @param byteS
   * @return
   */
  private byte[] getEncCode(byte[] byteS) {
      byte[] byteFina = null;
      Cipher cipher;
      try {
        cipher = Cipher.getInstance("DES");
        cipher.init(Cipher.ENCRYPT_MODE, key);
        byteFina = cipher.doFinal(byteS);
      } catch (Exception e) {
        throw new RuntimeException(
            "Error initializing SqlMap class. Cause: " + e);
      } finally {
        cipher = null;
      }
      return byteFina;
  }  /**
   * 解密以byte[]密文输入,以byte[]明文输出
   * @param byteD
   * @return
   */
  private byte[] getDesCode(byte[] byteD) {
      Cipher cipher;
      byte[] byteFina = null;
      try {
        cipher = Cipher.getInstance("DES");
        cipher.init(Cipher.DECRYPT_MODE, key);
        byteFina = cipher.doFinal(byteD);
      } catch (Exception e) {
        throw new RuntimeException(
            "Error initializing SqlMap class. Cause: " + e);
      } finally {
        cipher = null;
      }
      return byteFina;
  }  public static void main(String args[]) {
      DES des = new DES();
      // 设置密钥
      des.setKey("12345678");      String str1 = "1";
      //DES加密
      String str2 = des.getEncString(str1);
      String deStr = des.getDesString(str2);
      System.out.println("密文:" + str2);
      //DES解密
      System.out.println("明文:" + deStr);
  }
} 为什么两者运行得到的密文结果不一样呢！有高手解答吗？

Answer 1

如果排除base64的编码不一致原因
那就是.net的DESCryptoServiceProvider 实现和java的不一样
所以密文不一定一样。

Answer 2

感觉base64的编码不一致的可能性最大
你再问问做过java和.net的编码兼容问题的人吧

Answer 3

恩！谢谢大家，找到一种方法，贴出来给大家一起分享下
c#using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;  
using System.Configuration;   
using System.Web;   
using System.Security.Cryptography;   
using System.IO;   
  namespace DES
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }        private void button1_Click(object sender, EventArgs e)
        {
            string jiami = textBox1.Text;
           textBox2.Text= DESEnCode(jiami, "11111111");
        }          public static string DES_Key = "11111111";  
 
    #region DESEnCode DES加密   
    public static string DESEnCode(string pToEncrypt, string sKey)   
    {
       // string pToEncrypt1 = HttpContext.Current.Server.UrlEncode(pToEncrypt);   
        DESCryptoServiceProvider des = new DESCryptoServiceProvider();
        byte[] inputByteArray = Encoding.GetEncoding("UTF-8").GetBytes(pToEncrypt);   
  
        //建立加密对象的密钥和偏移量    
        //原文使用ASCIIEncoding.ASCII方法的GetBytes方法    
        //使得输入密码必须输入英文文本    
        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()));
        return System.Text.Encoding.Default.GetString(ms.ToArray());  
    }  
    #endregion       private void button2_Click(object sender, EventArgs e)
    {
        string jiemi = textBox2.Text;
        textBox3.Text = DESDeCode(jiemi,"11111111");
    }
  
  
    }
}javaimport 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 = "11111111";   
        String value="aa";   
        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();   
    }   
  
}