Himall商城安装帮助类AES加密解密（1）

 //AES密钥向量
        private static readonly byte[] _aeskeys = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF, 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
        //验证Base64字符串的正则表达式
        private static Regex _base64regex = new Regex(@"[A-Za-z0-9\=\/\+]");
        //防SQL注入正则表达式
        private static Regex _sqlkeywordregex = new Regex(@"(select|insert|delete|from|count|drop|table|update|truncate|asc\(|mid\(|char\(|xpcmdshell|exec|master|net|local|group|administrators|user|or|and|−|;|,|\(|" role="presentation" style="position: relative;">|drop|table|update|truncate|asc\(|mid\(|char\(|xpcmdshell|exec|master|net|local|group|administrators|user|or|and|−|;|,|\(|$|drop|table|update|truncate|asc\text{(}|mid\text{(}|char\text{(}|x{p}_{c}mdshell|exec|master|net|local|group|administrators|user|or|and|-|;|,|\text{(}|$|

|\{|\}|%|@|\*|!|\')", RegexOptions.IgnoreCase);

        ///

        /// AES加密
        ///

        /// 加密字符串
        /// 密钥
        ///
        public static string AESEncrypt(stri