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  //  }  }