protected void Button1_Click(object sender, EventArgs e)
{
string SavePath = HttpContext.Current.Server.MapPath(string.Format("~/App_Data/"));
Stream sourceStream = null;
WaveStream audioStream = null;
//create an empty stream to receive the extracted message
MemoryStream messageStream = new MemoryStream();
//open the key file
Stream keyStream = new FileStream(SavePath + "hash.txt", FileMode.Open);
try
{
//open the carrier file
sourceStream = FileUpload1.PostedFile.InputStream;
audioStream = new WaveStream(sourceStream);
WaveUtility utility = new WaveUtility(audioStream);
//exctract the message from the carrier wave
utility.Extract(messageStream, keyStream);
messageStream.Seek(0, SeekOrigin.Begin);
{ //display result
Label1.Text = new StreamReader(messageStream).ReadToEnd();
}
}
catch (Exception ex)
{
}
finally
{
if (keyStream != null)
{
keyStream.Close();
}
if (messageStream != null)
{
messageStream.Close();
}
if (audioStream != null)
{
audioStream.Close();
}
if (sourceStream != null)
{
sourceStream.Close();
}
}
}
private void btnExtract_Click(object sender, EventArgs e)
{
if (txtSrcFile2.Text.Length == 0)
{
errorProvider.SetError(txtSrcFile, "Taşıyıcı veri alanını boş bırakmayınız.");
}
else if (txtKeyFile2.Text.Length == 0)
{
errorProvider.SetError(txtKeyFile, "Bir şifre dosyası seçiniz.");
}
else
{
this.Cursor = Cursors.WaitCursor;
FileStream sourceStream = null;
WaveStream audioStream = null;
//Extract etmek için boş bir steam yaratıldı
MemoryStream messageStream = new MemoryStream();
//Key file açıldı
Stream keyStream = new FileStream(txtKeyFile2.Text, FileMode.Open);
try
{
// Taşıyıcı dosya açıldı
sourceStream = new FileStream(txtSrcFile2.Text, FileMode.Open);
audioStream = new WaveStream(sourceStream);
WaveUtility utility = new WaveUtility(audioStream);
// Mesaj açıldı
utility.Extract(messageStream, keyStream);
messageStream.Seek(0, SeekOrigin.Begin);
// Sonuç dosyaya kaydedildi
FileStream fs = new FileStream(txtMessageDstFile.Text + ".txt", FileMode.Create);
byte[] buffer = new byte[messageStream.Length];
messageStream.Read(buffer, 0, buffer.Length);
fs.Write(buffer, 0, buffer.Length);
fs.Close();
}
catch (Exception ex)
{
this.Cursor = Cursors.Default;
MessageBox.Show(ex.Message);
}
finally
{
if (keyStream != null)
{
keyStream.Close();
}
if (messageStream != null)
{
messageStream.Close();
}
if (audioStream != null)
{
audioStream.Close();
}
if (sourceStream != null)
{
sourceStream.Close();
}
this.Cursor = Cursors.Default;
}
}
}
