C#之加密解密(信息安全)代码封装

        /// <summary>
        /// 功能：MD5散列算法
        /// </summary>
        /// <param name="inputStr">参数：待加密的字符串</param>
        /// <param name="secString">参数：特殊加密字符串</param>
        /// <returns>返回值：加密后的密文(大写)，string类型</returns>
        public static string GetMd5Str(string inputStr, string secString)
        {
            byte[] palinData = null;
            byte[] encryptData = null;
            try
            {
                MD5 md5 = new MD5CryptoServiceProvider();
                palinData = Encoding.Default.GetBytes(inputStr + secString);
                encryptData = md5.ComputeHash(palinData);
            }
            catch (Exception e)
            {
                throw e;
            }
            return Convert.ToBase64String(encryptData).Substring(0, 20).ToUpper();
        }