using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Utils.Security
{
	public static class SecurityUtil
	{
		//key长度必须为8
		public static string Change(string data, string key)
		{
			DES2 des = new DES2();
			return des.EncryptString(data, key);
		}

		//key长度必须为8
		public static string ChangeBack(string data, string key)
		{
			DES2 des = new DES2();
			return des.DecryptString(data, key);
		}
	}
}