Encrypt.cs类源码-DEncrypt命名空间-代码大全-开发者工具网

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你现在查看的是Encrypt.cs类的源码

/// <summary>
/// 类说明：Assistant
/// 编 码 人：苏飞
/// 联系方式：361983679  
/// 更新网站：http://www.sufeinet.com/thread-655-1-1.html
/// </summary>
using System;
using System.Security.Cryptography;
using System.IO;

namespace DotNet.Utilities
{
	/// <summary>
	/// 加密解密实用类。
	/// </summary>
	public class Encrypt
	{
		//密钥
		private static byte[] arrDESKey = new byte[] {42, 16, 93, 156, 78, 4, 218, 32};
		private static byte[] arrDESIV = new byte[] {55, 103, 246, 79, 36, 99, 167, 3};

/// <summary>
		/// 加密。
		/// </summary>
		/// <param name="m_Need_Encode_String"></param>
		/// <returns></returns>
		public static string Encode(string m_Need_Encode_String)
		{
			if (m_Need_Encode_String == null)
			{
				throw new Exception("Error: \n源字符串为空！！");
			}
			DESCryptoServiceProvider objDES = new DESCryptoServiceProvider();
			MemoryStream objMemoryStream = new MemoryStream();
			CryptoStream objCryptoStream = new CryptoStream(objMemoryStream,objDES.CreateEncryptor(arrDESKey,arrDESIV),CryptoStreamMode.Write);
			StreamWriter objStreamWriter = new StreamWriter(objCryptoStream);
			objStreamWriter.Write(m_Need_Encode_String);
			objStreamWriter.Flush();
			objCryptoStream.FlushFinalBlock();
			objMemoryStream.Flush();
			return Convert.ToBase64String(objMemoryStream.GetBuffer(), 0, (int)objMemoryStream.Length);
		}

/// <summary>
		/// 解密。
		/// </summary>
		/// <param name="m_Need_Encode_String"></param>
		/// <returns></returns>
		public static string Decode(string m_Need_Encode_String)
		{
			if (m_Need_Encode_String == null)
			{
				throw new Exception("Error: \n源字符串为空！！");
			}
			DESCryptoServiceProvider objDES = new DESCryptoServiceProvider();
			byte[] arrInput = Convert.FromBase64String(m_Need_Encode_String);
			MemoryStream objMemoryStream = new MemoryStream(arrInput);
			CryptoStream objCryptoStream = new CryptoStream(objMemoryStream,objDES.CreateDecryptor(arrDESKey,arrDESIV),CryptoStreamMode.Read);
			StreamReader  objStreamReader  = new StreamReader(objCryptoStream);
			return objStreamReader.ReadToEnd();
		}

/// <summary>
        /// md5
        /// </summary>
        /// <param name="encypStr"></param>
        /// <returns></returns>
        public static string Md5(string encypStr)
        {
            string retStr;
            MD5CryptoServiceProvider m5 = new MD5CryptoServiceProvider();
            byte[] inputBye;
            byte[] outputBye;
            inputBye = System.Text.Encoding.ASCII.GetBytes(encypStr);
            outputBye = m5.ComputeHash(inputBye);
            retStr = Convert.ToBase64String(outputBye);
            return (retStr);
        }
	}
}