C# ascii加密和解密

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/// <summary>        /// ascii加密        /// </summary>        /// <param name="text"></param>        /// <returns></returns>        private string AsciiEncryption(string text, string parameter)        {            StringBuilder sb = new StringBuilder();            foreach (char c in text)            {                // Get the integral value of the character.                 int value = Convert.ToInt32(c);                // Convert the decimal value to a hexadecimal value in string form.                 int temp = Int32.Parse(parameter, System.Globalization.NumberStyles.HexNumber);    //16進位轉10進位 差值                string hexOutput = String.Format("{0:X}", value + temp);   //16進位資料   16進位加30   10進位加48                sb.Append(hexOutput);            }            return sb.ToString();        }

 

/// <summary>        /// Ascii解密        /// </summary>        /// <param name="text"></param>        /// <returns></returns>        private string AsciiDecryption(string text)        {            int temp = Int32.Parse("30", System.Globalization.NumberStyles.HexNumber);    //16進位轉10進位 差值            StringBuilder sb = new StringBuilder();            for (int i = 0; i < text.Length; i += 2)            {                string str = text.Substring(i, 2);  //16進位                int x10 = Int32.Parse(str, System.Globalization.NumberStyles.HexNumber);    //16進位轉10進位                //ToString("x8") 10進位轉16進位                string result = ((char)int.Parse((x10 - temp).ToString("x8"), System.Globalization.NumberStyles.HexNumber)).ToString();                sb.Append(result);            }            return sb.ToString();        }

 

C# ascii加密和解密