using?System;
using?System.IO;
using?System.Security.Cryptography;

namespace?CSharpLibrary.StaticService
{
	///?

	///?DESCrypt?的摘要說明。
	///?snipershen
	///?DES加密解密類
	///?xhshen@guanghua.sh.cn
	///?2003/11/20
	///?

	public?sealed?class?DESCrypt
	{
		public?DESCrypt（）
		{
			//
			//?TODO:?在此處添加構(gòu)造函數(shù)邏輯
			//
		}

		//加密
		//參數(shù):strData:要加密的數(shù)據(jù)?strKey:密鑰
		//返回:加好密的字符串
		public?static?string?Encrypt（string?strData?string?strKey）?
		{
			string?strRtn;
			try
			{
				DESCryptoServiceProvider?desc?=?new?DESCryptoServiceProvider（）;//des進(jìn)行加密
				byte[]?key?=?System.Text.Encoding.Unicode.GetBytes（strKey）;
				byte[]?data?=?System.Text.Encoding.Unicode.GetBytes（strData）;
				MemoryStream?ms?=?new?MemoryStream（）;//存儲加密后的數(shù)據(jù)
				CryptoStream?cs?=?new?CryptoStream（msdesc.CreateEncryptor（keykey）CryptoStreamMode.Write）;
				cs.Write（data?0?data.Length）;//進(jìn)行加密
				cs.FlushFinalBlock（）;
				//return?System.Text.Encoding.Unicode.GetString（ms.ToArray（））;//取加密后的數(shù)據(jù)
				strRtn=Convert.Tobase64String（ms.ToArray（））;
				return?strRtn;
			}
			catch
			{
				return?““;
			}
		}

		//解密
		//參數(shù):strData:要解密的數(shù)據(jù)?strKey:密鑰
		//返回:解好密的字符串
		public?static?string?Decrypt（string?strData?string?strKey）?
		{
			string?strRtn;
			try
			{
				DESCryptoServiceProvider?desc?=?new?DESCryptoServiceProvider（）;
				byte[]?key?=?System.Text.Encoding.Unicode.GetBytes（strKey）;
				//byte[]?data?=?System.Text.Encoding.Unicode.GetBytes（strData）;
				byte[]?data?=?Convert.Frombase64String（strData）;
				MemoryStream?ms?=?new?MemoryStream（）;//存儲解密后的數(shù)據(jù)
				CryptoStream?cs?=?new?CryptoStream（msdesc.CreateDecryptor（key?key）CryptoStreamMode.Write）;
				cs.Write（data?0?data.Length）;//解密數(shù)據(jù)
				cs.FlushFinalBlock（）;
				strRtn=System.Text.Encoding.Unicode.GetString（ms.ToArray（））;
				return?strRtn;
			}
			catch
			{
				return?““;
			}
		}

		public?static?string?Encrypt（string?strData）?
		{
			return?Encrypt（strData“Oyea“）;	
		}

		public?static?string?Decrypt（string?strData）?
		{
			return?Decrypt（strData“Oyea“）;	
		}


	}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????2220??2003-12-04?09:20??六種加密算法的C#實現(xiàn)源碼\DESCrypt.cs

?????文件????????837??2003-12-02?09:57??六種加密算法的C#實現(xiàn)源碼\MD5Crypt.cs

?????文件???????1827??2003-12-02?10:16??六種加密算法的C#實現(xiàn)源碼\RC2Crypt.cs

?????文件???????1818??2003-12-02?10:18??六種加密算法的C#實現(xiàn)源碼\RijndaelCrypt.cs

?????文件???????1116??2003-12-02?10:40??六種加密算法的C#實現(xiàn)源碼\RSACrypt.cs

?????文件???????1337??2003-12-02?11:53??六種加密算法的C#實現(xiàn)源碼\SingleCrypt.cs

?????目錄??????????0??2014-11-24?11:02??六種加密算法的C#實現(xiàn)源碼

-----------?---------??----------?-----??----

?????????????????9155????????????????????7