java和.net中的des加密和解密

参考网上其他人的代码:

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 = "11111111";
		String value="我们都是中国人 ";
		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 = "11111111";

    #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);

        //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()));
    }
    #endregion

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