DsJian/Utilities/FunctionUtils.cs

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// ================================================
// FunctionUtils.cs, 常用方法集合
// Copyright (C) 2010 maoyong
// mail:mysoft181@gmail.com
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// ================================================

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Collections;
using System.Security.Cryptography;
using System.Text.RegularExpressions;
using System.Configuration;
using System.Web.Security;
using System.Data;

namespace DsJian
{
    /// <summary> 
    /// 加密
    /// </summary> 
    public class AESEncrypt
    {
        private static byte[] Keys = { 0x41, 0x72, 0x65, 0x79, 0x6F, 0x75, 0x6D, 0x79, 0x53, 0x6E, 0x6F, 0x77, 0x6D, 0x61, 0x6E, 0x3F };

        public static string Encode(string encryptString, string encryptKey)
        {
            encryptKey = FunctionUtils.Text.GetSubString(encryptKey, 32, "");
            encryptKey = encryptKey.PadRight(32, ' ');

            RijndaelManaged rijndaelProvider = new RijndaelManaged();
            rijndaelProvider.Key = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 32));
            rijndaelProvider.IV = Keys;
            ICryptoTransform rijndaelEncrypt = rijndaelProvider.CreateEncryptor();

            byte[] inputData = Encoding.UTF8.GetBytes(encryptString);
            byte[] encryptedData = rijndaelEncrypt.TransformFinalBlock(inputData, 0, inputData.Length);

            return Convert.ToBase64String(encryptedData);
        }


        public static string Decode(string decryptString, string decryptKey)
        {
            try
            {
                decryptKey = FunctionUtils.Text.GetSubString(decryptKey, 32, "");
                decryptKey = decryptKey.PadRight(32, ' ');