tijian_tieying/web/Common/DEncrypt/DEncrypt.cs

using System;
using System.Security.Cryptography;  
using System.Text;
namespace ZWL.Common.DEncrypt
{
	/// <summary>
	/// Encrypt <20><>ժҪ˵<D2AA><CBB5><EFBFBD><EFBFBD>
    /// <20><>Ϊ<EFBFBD><CEAA>
    /// 2008.4
	/// </summary>
	public class DEncrypt
	{
		/// <summary>
		/// <20><><EFBFBD>췽<EFBFBD><ECB7BD>
		/// </summary>
		public DEncrypt()  
		{  
		} 

		#region ʹ<EFBFBD><EFBFBD> ȱʡ<EFBFBD><EFBFBD>Կ<EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<EFBFBD><EFBFBD><EFBFBD><EFBFBD>string

		/// <summary>
		/// ʹ<><CAB9>ȱʡ<C8B1><CAA1>Կ<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>string
		/// </summary>
		/// <param name="original"><3E><><EFBFBD><EFBFBD></param>
		/// <returns><3E><><EFBFBD><EFBFBD></returns>
		public static string Encrypt(string original)
		{
			return Encrypt(original,"zwl168918");
		}
		/// <summary>
		/// ʹ<><CAB9>ȱʡ<C8B1><CAA1>Կ<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>string
		/// </summary>
		/// <param name="original"><3E><><EFBFBD><EFBFBD></param>
		/// <returns><3E><><EFBFBD><EFBFBD></returns>
		public static string Decrypt(string original)
		{
			return Decrypt(original,"zwl168918",System.Text.Encoding.Default);
		}

		#endregion

		#region ʹ<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Կ<EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<EFBFBD><EFBFBD><EFBFBD><EFBFBD>string
		/// <summary>
		/// ʹ<>ø<EFBFBD><C3B8><EFBFBD><EFBFBD><EFBFBD>Կ<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>string
		/// </summary>
		/// <param name="original">ԭʼ<D4AD><CABC><EFBFBD><EFBFBD></param>
		/// <param name="key"><3E><>Կ</param>
		/// <param name="encoding"><3E>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>뷽<EFBFBD><EBB7BD></param>
		/// <returns><3E><><EFBFBD><EFBFBD></returns>
		public static string Encrypt(string original, string key)  
		{  
			byte[] buff = System.Text.Encoding.Default.GetBytes(original);  
			byte[] kb = System.Text.Encoding.Default.GetBytes(key);
			return Convert.ToBase64String(Encrypt(buff,kb));      
		}
		/// <summary>
		/// ʹ<>ø<EFBFBD><C3B8><EFBFBD><EFBFBD><EFBFBD>Կ<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>string
		/// </summary>
		/// <param name="original"><3E><><EFBFBD><EFBFBD></param>
		/// <param name="key"><3E><>Կ</param>
		/// <returns><3E><><EFBFBD><EFBFBD></returns>
		public static string Decrypt(string original, string key)
		{
			return Decrypt(original,key,System.Text.Encoding.Default);
		}

		/// <summary>
		/// ʹ<>ø<EFBFBD><C3B8><EFBFBD><EFBFBD><EFBFBD>Կ<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>string,<2C><><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD>뷽ʽ<EBB7BD><CABD><EFBFBD><EFBFBD>
		/// </summary>
		/// <param name="encrypted"><3E><><EFBFBD><EFBFBD></param>
		/// <param name="key"><3E><>Կ</param>
		/// <param name="encoding"><3E>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>뷽<EFBFBD><EBB7BD></param>
		/// <returns><3E><><EFBFBD><EFBFBD></returns>
		public static string Decrypt(string encrypted, string key,Encoding encoding)  
		{       
			byte[] buff = Convert.FromBase64String(encrypted);  
			byte[] kb = System.Text.Encoding.Default.GetBytes(key);
			return encoding.GetString(Decrypt(buff,kb));      
		}  
		#endregion

		#region ʹ<EFBFBD><EFBFBD> ȱʡ<EFBFBD><EFBFBD>Կ<EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<EFBFBD><EFBFBD><EFBFBD><EFBFBD>/byte[]
		/// <summary>
		/// ʹ<><CAB9>ȱʡ<C8B1><CAA1>Կ<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>byte[]
		/// </summary>
		/// <param name="encrypted"><3E><><EFBFBD><EFBFBD></param>
		/// <param name="key"><3E><>Կ</param>
		/// <returns><3E><><EFBFBD><EFBFBD></returns>
		public static byte[] Decrypt(byte[] encrypted)  
		{  
			byte[] key = System.Text.Encoding.Default.GetBytes("zwl168918"); 
			return Decrypt(encrypted,key);     
		}
		/// <summary>
		/// ʹ<><CAB9>ȱʡ<C8B1><CAA1>Կ<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		/// </summary>
		/// <param name="original">ԭʼ<D4AD><CABC><EFBFBD><EFBFBD></param>
		/// <param name="key"><3E><>Կ</param>
		/// <returns><3E><><EFBFBD><EFBFBD></returns>
		public static byte[] Encrypt(byte[] original)  
		{  
			byte[] key = System.Text.Encoding.Default.GetBytes("zwl168918"); 
			return Encrypt(original,key);     
		}  
		#endregion

		#region  ʹ<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Կ <EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<EFBFBD><EFBFBD><EFBFBD><EFBFBD>/byte[]

		/// <summary>
		/// <20><><EFBFBD><EFBFBD>MD5ժҪ
		/// </summary>
		/// <param name="original"><3E><><EFBFBD><EFBFBD>Դ</param>
		/// <returns>ժҪ</returns>
		public static byte[] MakeMD5(byte[] original)
		{
			MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();   
			byte[] keyhash = hashmd5.ComputeHash(original);       
			hashmd5 = null;  
			return keyhash;
		}


		/// <summary>
		/// ʹ<>ø<EFBFBD><C3B8><EFBFBD><EFBFBD><EFBFBD>Կ<EFBFBD><D4BF><EFBFBD><EFBFBD>
		/// </summary>
		/// <param name="original"><3E><><EFBFBD><EFBFBD></param>
		/// <param name="key"><3E><>Կ</param>
		/// <returns><3E><><EFBFBD><EFBFBD></returns>
		public static byte[] Encrypt(byte[] original, byte[] key)  
		{  
			TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider();       
			des.Key =  MakeMD5(key);
			des.Mode = CipherMode.ECB;  
     
			return des.CreateEncryptor().TransformFinalBlock(original, 0, original.Length);     
		}  

		/// <summary>
		/// ʹ<>ø<EFBFBD><C3B8><EFBFBD><EFBFBD><EFBFBD>Կ<EFBFBD><D4BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		/// </summary>
		/// <param name="encrypted"><3E><><EFBFBD><EFBFBD></param>
		/// <param name="key"><3E><>Կ</param>
		/// <returns><3E><><EFBFBD><EFBFBD></returns>
		public static byte[] Decrypt(byte[] encrypted, byte[] key)  
		{  
			TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider();  
			des.Key =  MakeMD5(key);    
			des.Mode = CipherMode.ECB;  

			return des.CreateDecryptor().TransformFinalBlock(encrypted, 0, encrypted.Length);
		}  
  
		#endregion

		

		
	}
}