Aes加解密

遇到URL参数的加解密，出于安全性的考虑，一般在后台进行参数的处理，Aes（高级加密标准）是比较常见的加解密方法，其流程如下：

/// <summary>
    /// 加解密
    /// </summary>
    public class AesCode {
        #region 加解密
        /// <summary>  
        /// AES 解密  
        /// </summary>  
        /// <param name="toDecrypt"></param>  
        /// <returns></returns>  
        public static string AesDecrypt(string toDecrypt) {
            byte[] keyArray = Encoding.UTF8.GetBytes("12345678901234567890123456789012");
            byte[] toEncryptArray = Convert.FromBase64String(toDecrypt);

            RijndaelManaged rDel = new RijndaelManaged();
            rDel.Key = keyArray;
            rDel.Mode = CipherMode.ECB;
            rDel.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = rDel.CreateDecryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

            return Encoding.UTF8.GetString(resultArray);
        }

        /// <summary>  
        /// AES 加密  
        /// </summary>  
        /// <param name="toEncrypt"></param>  
        /// <returns></returns>  
        public static string AesEncrypt(string toEncrypt) {
            byte[] keyArray = Encoding.UTF8.GetBytes("12345678901234567890123456789012");
            byte[] toEncryptArray = Encoding.UTF8.GetBytes(toEncrypt);

            RijndaelManaged rDel = new RijndaelManaged();
            rDel.Key = keyArray;
            rDel.Mode = CipherMode.ECB;
            rDel.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = rDel.CreateEncryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

            return Convert.ToBase64String(resultArray, 0, resultArray.Length);
        }
        #endregion
    }