Java和C#交叉加密解密方法（DES）

来源：互联网发布：ant 执行指定java 编辑：程序博客网时间：2024/06/06 17:05

看过网上许多这种Java和.net交叉加密解密的方法，杂七杂八的，让人看得很不明了，经过整理和调试后，决定把代码贴上来，一来提供给有需要的朋友作参考，二来给自己留下个脚印，以免以后有用得着的地方。我不知道这种加密解密的安全性可靠还是不可靠，但至少实现了Java和C#.net的交叉加密解密方法，代码如下：

Java类：

import javax.crypto.Cipher;   import javax.crypto.SecretKey;   import javax.crypto.SecretKeyFactory;   import javax.crypto.spec.DESKeySpec;   import javax.crypto.spec.IvParameterSpec;     public class DESCryptUtil {       private static final String key = "20100728";              // 解密数据       public static String decrypt(String message) throws Exception {           byte[] bytesrc = stringToBytes(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, "UTF-8");       }         //加密数据       public static byte[] encrypt(String message) 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"));       }         //String转Byte数组       public static byte[] stringToBytes(String temp) {           byte digest[] = new byte[temp.length() / 2];           for (int i = 0; i < digest.length; i++) {               String byteString = temp.substring(2 * i, 2 * i + 2);               int byteValue = Integer.parseInt(byteString, 16);               digest[i] = (byte) byteValue;           }             return digest;       }              //Byte数组转String       public static String bytesToString(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();       }         public static void main(String[] args) throws Exception {           String key = "20100728";           String value = "阿\"飞";           System.out.println("加密的数据:" + value);           String a = bytesToString(encrypt(value)).toUpperCase();           System.out.println("加密后的数据:" + a);             String b = decrypt(a);           System.out.println("解密后的数据:" + b);           System.out.println(b.length());       }   }

C#代码：

using System;   using System.Collections.Generic;   using System.ComponentModel;   using System.Data;   using System.Drawing;   using System.Text;   using System.Windows.Forms;   using System.Security.Cryptography;   using System.Configuration;      using System.Web;     using System.IO;     namespace DES   {       public partial class Form1 : Form       {           private string DES_Key = "20100728";               public Form1()           {               InitializeComponent();           }             private void button1_Click(object sender, EventArgs e)           {               string jiami = textBox3.Text;               this.textBox1.Text = DESEnCode(jiami);           }             private void button2_Click(object sender, EventArgs e)           {               string jiemi = textBox1.Text;               textBox2.Text = DESDeCode(jiemi);           }             #region DESEnCode DES加密           public string DESEnCode(string pToEncrypt)           {                  DESCryptoServiceProvider des = new DESCryptoServiceProvider();               byte[] inputByteArray = Encoding.GetEncoding("UTF-8").GetBytes(pToEncrypt);                    des.Key = ASCIIEncoding.ASCII.GetBytes(DES_Key);               des.IV = ASCIIEncoding.ASCII.GetBytes(DES_Key);               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);               }               return ret.ToString();           }           #endregion             #region DESDeCode DES解密           public string DESDeCode(string pToDecrypt)           {                 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(DES_Key);               des.IV = ASCIIEncoding.ASCII.GetBytes(DES_Key);               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 System.Text.Encoding.UTF8.GetString(ms.ToArray());           }           #endregion         }   }  


	
					
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