[C#.net] เอา Encryption กับ Decryption มาฝากเพื่อนๆ เผื่อใครอยากเอาไปใช้ครับ

using System.Security.Cryptography;
using System.Text;

public class MyScript
{
        //Encryption
        public string EncodePasswordToBase64(string password)
        {
            try
            {
                byte[] encData_byte = new byte[password.Length];
                encData_byte = System.Text.Encoding.UTF8.GetBytes(password);
                string encodedData = Convert.ToBase64String(encData_byte);
                return encodedData;
            }
            catch (Exception ex)
            {
                throw new Exception("Error in base64Encode" + ex.Message);
            }
        } 

        //Decryption
        public string DecodeFrom64(string encodedData)
        {
            System.Text.UTF8Encoding encoder = new System.Text.UTF8Encoding();
            System.Text.Decoder utf8Decode = encoder.GetDecoder();
            byte[] todecode_byte = Convert.FromBase64String(encodedData);
            int charCount = utf8Decode.GetCharCount(todecode_byte, 0, todecode_byte.Length);
            char[] decoded_char = new char[charCount];
            utf8Decode.GetChars(todecode_byte, 0, todecode_byte.Length, decoded_char, 0);
            string result = new String(decoded_char);
            return result;
        }
}