public LoadForm(string fileName, Service1Client _client, string SafeFileName, string algorithm, string userName)
{
//upload constructor
InitializeComponent();
_userName = userName;
this.ControlBox = false;
lblCaption.Text = $@"File {Path.GetFileName(fileName)}{Environment.NewLine} is uploading and encrypting!{Environment.NewLine} Please wait";
this.Text = @"Uploading...";
progressBar1.Maximum = 20;
timer1.Interval = 250;
progressBar1.Style = ProgressBarStyle.Marquee;
timer1.Start();
if (algorithm == "Knapsack")
{
_crypto = new KnapSack();
_algByte = Encoding.ASCII.GetBytes("K");
}
else if (algorithm == "SimpleSubstitution")
{
_crypto = SimpleSub.Instance;
_algByte = Encoding.ASCII.GetBytes("S");
}
else if (algorithm == "XXTEA")
{
_crypto = XXTEA.Instance;
_algByte = Encoding.ASCII.GetBytes("X");
}
UploadFile(fileName, _client, SafeFileName);
}
private async void DownloadFile(string fileName, Service1Client _client)
{
var fileinfo = _client.FileInfo(fileName, _userName);
var path = _directoryPath + @"\Download\";
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
var nChunks = fileinfo.Length / CHUNK + 1;
var down = new byte[fileinfo.Length];
for (int i = 0; i < nChunks; i++)
{
var Downdata = _client.DownloadWithChunks(fileinfo.Name, _userName, i);
Buffer.BlockCopy(Downdata, 0, down, i * CHUNK, Downdata.Length);
}
//var down = _client.Download(fileName, _userName);
var dataWithoutAlgorithamByte = new byte[down.Length - 1];
_algByte = new Byte[] { down[down.Length - 1] };
if (Encoding.ASCII.GetString(_algByte) == "X")
{
_crypto = XXTEA.Instance;
}
else if (Encoding.ASCII.GetString(_algByte) == "K")
{
_crypto = new KnapSack();
}
else if (Encoding.ASCII.GetString(_algByte) == "S")
{
_crypto = SimpleSub.Instance;
}
Buffer.BlockCopy(down, 0, dataWithoutAlgorithamByte, 0, down.Length - 1);
var data = _crypto.Decrypt(dataWithoutAlgorithamByte);
var hash = await Task.Run(() => GetHash(dataWithoutAlgorithamByte));
//var hash = GetHash(data);
var redisGet = _client.GetFileHash(_userName, fileName);
if (hash == redisGet)
{
File.WriteAllBytes($"{path}{fileName}", data);
}
else
{
MessageBox.Show($@"Error while downloading!{Environment.NewLine}Try again!!!", "Download Error", MessageBoxButtons.OK,
MessageBoxIcon.Error);
}
timer1.Stop();
DialogResult = DialogResult.OK;
this.Close();
}
