C#常用数据加密类

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Security.Cryptography;

using System.Text;

using System.Threading.Tasks;

namespace Cryptography

{

    public static class EncryptComputer

    {

        #region DES加密速度較快，適用於加密大量數據的場合

        /// <summary>

        /// DES加密速度較快，適用於加密大量數據的場合

        /// </summary>

        /// <param name="EncryptString">待加密的密文</param>

        /// <param name="EncryptKey">加密的密鑰</param>

        /// <returns>returns</returns>

        public static string DESEncrypt(string EncryptString, string EncryptKey)

        {

            if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); }

            if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); }

            if (EncryptKey.Length != 8) { throw (new Exception("密钥必须为8位")); }

            byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };

            string m_strEncrypt = "";

            DESCryptoServiceProvider m_DESProvider = new DESCryptoServiceProvider();

            try

            {

                byte[] m_btEncryptString = Encoding.Default.GetBytes(EncryptString);

                MemoryStream m_stream = new MemoryStream();

                CryptoStream m_cstream = new CryptoStream(m_stream, m_DESProvider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write);

                m_cstream.Write(m_btEncryptString, 0, m_btEncryptString.Length);

                m_cstream.FlushFinalBlock();

                m_strEncrypt = Convert.ToBase64String(m_stream.ToArray());

                m_stream.Close(); m_stream.Dispose();

                m_cstream.Close(); m_cstream.Dispose();

            }

            catch (IOException ex) { throw ex; }

            catch (CryptographicException ex) { throw ex; }

            catch (ArgumentException ex) { throw ex; }

            catch (Exception ex) { throw ex; }

            finally { m_DESProvider.Clear(); }

            return m_strEncrypt;

        }

        #endregion

        #region DES 解密(数据加密标准，速度较快，适用于加密大量数据的场合)

        /// <summary>

        /// DES 解密(加密速度較快，適用於加密大量數據的場合)

        /// </summary>

        /// <param name="DecryptString">待解密的密文</param>

        /// <param name="DecryptKey">解密的密鑰</param>

        /// <returns>returns</returns>

        public static string DESDecrypt(string DecryptString, string DecryptKey)

        {

            if (string.IsNullOrEmpty(DecryptString)) { throw (new Exception("密鑰不得為空")); }

            if (string.IsNullOrEmpty(DecryptKey)) { throw (new Exception("密鑰不得為空")); }

            if (DecryptKey.Length != 8) { throw (new Exception("密鑰必須為8位")); }

            byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };

            string m_strDecrypt = "";

            DESCryptoServiceProvider m_DESProvider = new DESCryptoServiceProvider();

            try

            {

                byte[] m_btDecryptString = Convert.FromBase64String(DecryptString);

                MemoryStream m_stream = new MemoryStream();

                CryptoStream m_cstream = new CryptoStream(m_stream, m_DESProvider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write);

                m_cstream.Write(m_btDecryptString, 0, m_btDecryptString.Length);

                m_cstream.FlushFinalBlock();

                m_strDecrypt = Encoding.Default.GetString(m_stream.ToArray());

                m_stream.Close(); m_stream.Dispose();

                m_cstream.Close(); m_cstream.Dispose();

            }

            catch (IOException ex) { throw ex; }

            catch (CryptographicException ex) { throw ex; }

            catch (ArgumentException ex) { throw ex; }

            catch (Exception ex) { throw ex; }

            finally { m_DESProvider.Clear(); }

            return m_strDecrypt;

        }

        #endregion

        #region RC2 加密(用变长密钥对大量数据进行加密)

        /// <summary>

        /// RC2 加密(用变长密钥对大量数据进行加密)

        /// </summary>

        /// <param name="EncryptString">待加密密文</param>

        /// <param name="EncryptKey">加密密钥</param>

        /// <returns>returns</returns>

        public static string RC2Encrypt(string EncryptString, string EncryptKey)

        {

            if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); }

            if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); }

            if (EncryptKey.Length < 5 || EncryptKey.Length > 16) { throw (new Exception("密钥必须为5-16位")); }

            string m_strEncrypt = "";

            byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };

            RC2CryptoServiceProvider m_RC2Provider = new RC2CryptoServiceProvider();

            try

            {

                byte[] m_btEncryptString = Encoding.Default.GetBytes(EncryptString);

                MemoryStream m_stream = new MemoryStream();

                CryptoStream m_cstream = new CryptoStream(m_stream, m_RC2Provider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write);

                m_cstream.Write(m_btEncryptString, 0, m_btEncryptString.Length);

                m_cstream.FlushFinalBlock();

                m_strEncrypt = Convert.ToBase64String(m_stream.ToArray());

                m_stream.Close(); m_stream.Dispose();

                m_cstream.Close(); m_cstream.Dispose();

            }

            catch (IOException ex) { throw ex; }

            catch (CryptographicException ex) { throw ex; }

            catch (ArgumentException ex) { throw ex; }

            catch (Exception ex) { throw ex; }

            finally { m_RC2Provider.Clear(); }

            return m_strEncrypt;

        }

        #endregion

        #region RC2 解密(用变长密钥对大量数据进行加密)

        /// <summary>

        /// RC2 解密(用变长密钥对大量数据进行加密)

        /// </summary>

        /// <param name="DecryptString">待解密密文</param>

        /// <param name="DecryptKey">解密密钥</param>

        /// <returns>returns</returns>

        public static string RC2Decrypt(string DecryptString, string DecryptKey)

        {

            if (string.IsNullOrEmpty(DecryptString)) { throw (new Exception("密文不得为空")); }

            if (string.IsNullOrEmpty(DecryptKey)) { throw (new Exception("密钥不得为空")); }

            if (DecryptKey.Length < 5 || DecryptKey.Length > 16) { throw (new Exception("密钥必须为5-16位")); }

            byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };

            string m_strDecrypt = "";

            RC2CryptoServiceProvider m_RC2Provider = new RC2CryptoServiceProvider();

            try

            {

                byte[] m_btDecryptString = Convert.FromBase64String(DecryptString);

                MemoryStream m_stream = new MemoryStream();

                CryptoStream m_cstream = new CryptoStream(m_stream, m_RC2Provider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write);

                m_cstream.Write(m_btDecryptString, 0, m_btDecryptString.Length);

                m_cstream.FlushFinalBlock();

                m_strDecrypt = Encoding.Default.GetString(m_stream.ToArray());

                m_stream.Close(); m_stream.Dispose();

                m_cstream.Close(); m_cstream.Dispose();

            }

            catch (IOException ex) { throw ex; }

            catch (CryptographicException ex) { throw ex; }

            catch (ArgumentException ex) { throw ex; }

            catch (Exception ex) { throw ex; }

            finally { m_RC2Provider.Clear(); }

            return m_strDecrypt;

        }

        #endregion

        #region 3DES加密基於DES，對一塊數據用三個不同的秘鑰進行三次加密，強度更高些

        /// <summary>

        /// 3DES加密基於DES，對一塊數據用三個不同的密鑰進行三次加密，強度更高些

        /// </summary>

        /// <param name="EncryptString">待加密密文</param>

        /// <param name="EncryptKey1">密鑰一</param>

        /// <param name="EncryptKey2">密鑰二</param>

        /// <param name="EncryptKey3">密鑰三</param>

        /// <returns>returns</returns>

        public static string DES3Encrypt(string EncryptString, string EncryptKey1, string EncryptKey2, string EncryptKey3)

        {

            string m_strEncrypt = "";

            try

            {

                m_strEncrypt = DESEncrypt(EncryptString, EncryptKey3);

                m_strEncrypt = DESEncrypt(m_strEncrypt, EncryptKey2);

                m_strEncrypt = DESEncrypt(m_strEncrypt, EncryptKey1);

            }

            catch (Exception ex) { throw ex; }

            return m_strEncrypt;

        }

        #endregion

        #region 3DES 解密(3DES加密基於DES，對一塊數據用三個不同的密鑰進行三次加密，強度更高些)

        /// <summary>

        /// 3DES 解密(3DES加密基於DES，對一塊數據用三個不同的密鑰進行三次加密，強度更高些)

        /// </summary>

        /// <param name="DecryptString">待解密密文</param>

        /// <param name="DecryptKey1">密钥一</param>

        /// <param name="DecryptKey2">密钥二</param>

        /// <param name="DecryptKey3">密钥三</param>

        /// <returns>returns</returns>

        public static string DES3Decrypt(string DecryptString, string DecryptKey1, string DecryptKey2, string DecryptKey3)

        {

            string m_strDecrypt = "";

            try

            {

                m_strDecrypt = DESDecrypt(DecryptString, DecryptKey1);

                m_strDecrypt = DESDecrypt(m_strDecrypt, DecryptKey2);

                m_strDecrypt = DESDecrypt(m_strDecrypt, DecryptKey3);

            }

            catch (Exception ex) { throw ex; }

            return m_strDecrypt;

        }

        #endregion

        #region AES 加密為高級加密標準，是下一代加密算法的標準，速度快，安全級別高

        /// <summary>

        /// AES 加密為高級加密標準，是下一代加密算法的標準，速度快，安全級別高

        /// </summary>

        /// <param name="EncryptString">待加密密文</param>

        /// <param name="EncryptKey">加密密鑰</param>

        /// <returns></returns>

        public static string AESEncrypt(string EncryptString, string EncryptKey)

        {

            if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); }

            if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); }

            string m_strEncrypt = "";

            byte[] m_btIV = Convert.FromBase64String("Rkb4jvUy/ye7Cd7k89QQgQ==");

            Rijndael m_AESProvider = Rijndael.Create();

            try

            {

                byte[] m_btEncryptString = Encoding.Default.GetBytes(EncryptString);

                MemoryStream m_stream = new MemoryStream();

                CryptoStream m_csstream = new CryptoStream(m_stream, m_AESProvider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write);

                m_csstream.Write(m_btEncryptString, 0, m_btEncryptString.Length); m_csstream.FlushFinalBlock();

                m_strEncrypt = Convert.ToBase64String(m_stream.ToArray());

                m_stream.Close(); m_stream.Dispose();

                m_csstream.Close(); m_csstream.Dispose();

            }

            catch (IOException ex) { throw ex; }

            catch (CryptographicException ex) { throw ex; }

            catch (ArgumentException ex) { throw ex; }

            catch (Exception ex) { throw ex; }

            finally { m_AESProvider.Clear(); }

            return m_strEncrypt;

        }

        #endregion

        #region AES 加密為高級加密標準，是下一代加密算法的標準，速度快，安全級別高

        /// <summary>

        /// AES 加密為高級加密標準，是下一代加密算法的標準，速度快，安全級別高

        /// </summary>

        /// <param name="DecryptString">待解密密文</param>

        /// <param name="DecryptKey">解密密鑰</param>

        /// <returns></returns>

        public static string AESDecrypt(string DecryptString, string DecryptKey)

        {

            if (string.IsNullOrEmpty(DecryptString)) { throw (new Exception("密文不得为空")); }

            if (string.IsNullOrEmpty(DecryptKey)) { throw (new Exception("密钥不得为空")); }

            string m_strDecrypt = "";

            byte[] m_btIV = Convert.FromBase64String("Rkb4jvUy/ye7Cd7k89QQgQ==");

            Rijndael m_AESProvider = Rijndael.Create();

            try

            {

                byte[] m_btDecryptString = Convert.FromBase64String(DecryptString);

                MemoryStream m_stream = new MemoryStream();

                CryptoStream m_csstream = new CryptoStream(m_stream, m_AESProvider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write);

                m_csstream.Write(m_btDecryptString, 0, m_btDecryptString.Length); m_csstream.FlushFinalBlock();

                m_strDecrypt = Encoding.Default.GetString(m_stream.ToArray());

                m_stream.Close(); m_stream.Dispose();

                m_csstream.Close(); m_csstream.Dispose();

            }

            catch (IOException ex) { throw ex; }

            catch (CryptographicException ex) { throw ex; }

            catch (ArgumentException ex) { throw ex; }

            catch (Exception ex) { throw ex; }

            finally { m_AESProvider.Clear(); }

            return m_strDecrypt;

        }

        #endregion

    }

}

C#常用数据加密类的更多相关文章

ASP.NET(C#)常用数据加密和解密方法汇总
一. 数据加密的概念 1. 基本概念 2. 基本功能 3. 加密形式二. 数据加密的项目应用和学习 1. 媒体加密:DRM 2. 文件加密:文本 ...
js常用工具类.
一些js的工具类复制代码 /** * Created by sevennight on 15-1-31. * js常用工具类 */ /** * 方法作用:[格式化时间] * 使用方法 * 示例: * ...
IOS开发--常用工具类收集整理（Objective-C）（持续更新）
前言:整理和收集了IOS项目开发常用的工具类,最后也给出了源码下载链接. 这些可复用的工具,一定会给你实际项目开发工作锦上添花,会给你带来大大的工作效率. 重复造轮子的事情,除却自我多练习编码之外,就 ...
Apache Commons 常用工具类整理
其实一直都在使用常用工具类,只是从没去整理过,今天空了把一些常用的整理一下吧怎么使用的一看就明白,另外还有注释,最后的使用pom引入的jar包 public class ApacheCommonsT ...
Android 常用工具类之SPUtil，可以修改默认sp文件的路径
参考: 1. 利用Java反射机制改变SharedPreferences存储路径 Singleton1900 2. Android快速开发系列 10个常用工具类 Hongyang import ...
封装一个简单好用的打印Log的工具类And快速开发系列 10个常用工具类
快速开发系列 10个常用工具类 http://blog.csdn.net/lmj623565791/article/details/38965311 ------------------------- ...
js(jQuery)获取时间的方法及常用时间类搜集
获取时间的方法及常用时间类都是大家经常使用的,在本文为大家整理了一些,个人感觉还比较全,感兴趣的朋友可以收集下复制代码代码如下: $(function(){ var mydate = new D ...
javaweb常用工具类及配置文件备份
Javaweb常用工具类及配置文件备份做一个代码备份,以后常用到的. hibernate工具类备份 package com.dly.service; /* * hibernate获取sessi ...
[C#] 常用工具类——直接在浏览器输出数据
/// <summary> /// <para> </para> /// 常用工具类——直接在浏览器输出数据 /// <para> ---------- ...

随机推荐

swift,NSUserDefaults的swift化封装
NSUserDefaultshtml, body {overflow-x: initial !important;}.CodeMirror { height: auto; } .CodeMirror- ...
实战c++中的string系列--string与char*、const char *的转换(data() or c_str())
在project中,我们也有非常多时候用到string与char*之间的转换,这里有个一我们之前提到的函数 c_str(),看看这个原型: const char *c_str(); c_str()函数 ...
MVC教程五：Action方法的返回类型
MVC中的Action方法的返回值一般有以下几种: 类型 s说明 EmptyResult 不进行任何操作 ContentResult 将指定内容作为文本输出 JsonResult 输出JSON字符串 ...
linux下安装redis并配置
redis官网上给出了安装步骤,这里做一下总结. 1.Download, extract and compile Redis with: wget http://download.redis.io/r ...
WebRTC 源码分析（三）：安卓视频硬编码
数据怎么送进编码器? 怎么从编码器取数据? 如何做流控? 在开始之前,我们先了解一下 MediaCodec 的基本知识. MediaCodec 基础 Developer 官网上的描述已经很清楚了,下 ...
VS2008中设置字体大小和添加显示行号
1.字体设置菜单->工具->选项->环境->字体和颜色在字体那一栏可以选字体,VC6.0默认的字体是Fixedsys,字体大小你可以设为12,就与VC6.0的一样的字体了. ...
微信小程序——网盘图片预览
微信小程序图片预览提供了一个wx.previewImage接口,如下图: 现在我需要对网盘文件里的图片预览,但是网盘从后台返回的数据是各种类型的文件,如下图所示: 那么我们需要解决2个问题: 1.从这 ...
jquery+easyui开发、培训文档
目录 1.... Accordion(可折叠标签)......................................................................... ...
ViewPager自定义选项卡
转自:http://www.open-open.com/lib/view/open1352621601262.html
Selenium常用操作汇总二——如何操作select下拉框
下面我们来看一下selenium webdriver是如何来处理select下拉框的,以http://passport.51.com/reg2.5p这个页面为例.这个页面中有4个下拉框,下面演示4种选 ...

C#常用数据加密类

C#常用数据加密类的更多相关文章

随机推荐

热门专题