实现java和C#相互加密与解密 并能保持解密出来一致

实现java和C#相互加密与解密 并能保持解密出来一致

 

方法一:

java:

  

 

import java.security.Key;
import java.security.spec.AlgorithmParameterSpec;

import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import javax.crypto.spec.IvParameterSpec;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

/**
 *
 * @author Administrator
 */

public class CryptoTools {
   // DES加密的私钥，必须是8位长的字符串
    private static final byte[] DESkey = "11111111".getBytes();// 设置密钥

 private static final byte[] DESIV = "12345678".getBytes();// 设置向量

 static AlgorithmParameterSpec iv = null;// 加密算法的参数接口，IvParameterSpec是它的一个实现
 private static Key key = null;

 public CryptoTools() throws Exception {
  DESKeySpec keySpec = new DESKeySpec(DESkey);// 设置密钥参数
  iv = new IvParameterSpec(DESIV);// 设置向量
  SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");// 获得密钥工厂
  key = keyFactory.generateSecret(keySpec);// 得到密钥对象

 }

 public String encode(String data) throws Exception {
  Cipher enCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");// 得到加密对象Cipher
  enCipher.init(Cipher.ENCRYPT_MODE, key, iv);// 设置工作模式为加密模式，给出密钥和向量
  byte[] pasByte = enCipher.doFinal(data.getBytes("utf-8"));
  BASE64Encoder base64Encoder = new BASE64Encoder();
  return base64Encoder.encode(pasByte);
 }

 public String decode(String data) throws Exception {
  Cipher deCipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
  deCipher.init(Cipher.DECRYPT_MODE, key, iv);
  BASE64Decoder base64Decoder = new BASE64Decoder();
  byte[] pasByte = deCipher.doFinal(base64Decoder.decodeBuffer(data));
  return new String(pasByte, "UTF-8");
 }
}

 

//测试
 public static void main(String[] args) throws Exception {

  CryptoTools tools = new CryptoTools();
  System.out.println("加密:" + tools.encode("天下"));
  System.out.println("解密:" + tools.decode(tools.encode("天下")));
 }

}

 

 

 

 

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方法二:

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();
        }

 

          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("12345678");
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);

            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();

            return Convert.ToBase64String(ms.ToArray());
        }
        #endregion

        #region DESDeCode DES解密
        /// <summary>
        /// 对DES加密后的字符串进行解密
        /// </summary>
        /// <param name="encryptedString">待解密的字符串</param>
        /// <returns>解密后的字符串</returns>
        public string DESDeCode(string encryptedString, string sKey)
        {
            byte[] btKey = Encoding.Default.GetBytes(sKey);
            byte[] btIV = Encoding.Default.GetBytes("12345678");
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();

            using (MemoryStream ms = new MemoryStream())
            {
                byte[] inData = Convert.FromBase64String(encryptedString);
                try
                {
                    using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(btKey, btIV), CryptoStreamMode.Write))
                    {
                        cs.Write(inData, 0, inData.Length);
                        cs.FlushFinalBlock();
                    }

                    return Encoding.UTF8.GetString(ms.ToArray());
                }
                catch
                {
                    throw;
                }
            }
        }

        #endregion  

//测试
        private void button1_Click(object sender, EventArgs e)
        {
            string jiami = textBox1.Text;
           textBox2.Text= DESEnCode(jiami, "11111111");
        }
    private void button2_Click(object sender, EventArgs e)
    {
        string jiemi = textBox2.Text;
        textBox3.Text = DESDeCode(jiemi,"11111111");
    }
 
 
    }
}