c# 데이터 암호화 (Class DataEncryptDecrypt.cs)

DataEncryptDecrypt.cs

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

using System.IO;

public class DataEncryptDecrypt
{
    public static string encryData(string filepath)
    {
        ///RijndaelManaged supports 128, 192 and 256 bit keys.

        byte[] keyArray = UTF8Encoding.UTF8.GetBytes("AAECAwQFBgcICQoLDA0ODw==");

        //byte[] toEmcryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);
        //byte[] toEmcryptArray = Convert.FromBase64String(toEncrypt);
        byte[] toEmcryptArray = File.ReadAllBytes(filepath);
        //byte[] toEmcryptArray = Convert.FromBase64String(toEncrypt.Replace(" ", "+"));

        RijndaelManaged rDel = new RijndaelManaged();

        rDel.Key = keyArray;
        rDel.Mode = CipherMode.ECB;

        //rDel.Padding = PaddingMode.PKCS7;
        //rDel.Padding = PaddingMode.None;

        ICryptoTransform cTransform = rDel.CreateEncryptor();

        byte[] resultArray = cTransform.TransformFinalBlock(toEmcryptArray, 0, toEmcryptArray.Length);

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

    public static string Decrypt(string toDecrypt)
    {
        byte[] keyArray = UTF8Encoding.UTF8.GetBytes("AAECAwQFBgcICQoLDA0ODw==");

        byte[] toEncryptArray = Convert.FromBase64String(toDecrypt);

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

        //rDel.Padding = PaddingMode.PKCS7;
        rDel.Padding = PaddingMode.None;

        ICryptoTransform cTransform = rDel.CreateDecryptor();

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

        //string rs = System.Convert.ToBase64String(resultArray);


        //return Convert.ToBase64String(resultArray);
        //return Convert.ToBase64String(resultArray,0,resultArray.Length);
        string rs = UTF8Encoding.UTF8.GetString(resultArray);
        //string rs = Encoding.ASCII.GetString(resultArray);
        //s = s.Replace("\x01", @"&#01"); ;

        return rs;
    }

    
}