private void btnEnkrip_Click(object sender, EventArgs e)
{
if (txtFileWav.Text.Length==0)
{
error.SetError(txtFileWav, "Anda harus memasukkan file wav");
}
else if (txtKunci.Text.Length == 0)
{
error.SetError(txtKunci, "Kunci tidak boleh kosong!");
}
else if (txtHslSmbny.Text.Length==0)
{
error.SetError(txtHslSmbny, "Hasil enkripsi tidak boleh kosong!.");
}
else if (rdoSmbnyiFile.Checked && (txtSmbnyiFile.Text.Length == 0))
{
error.SetError(txtSmbnyiFile, "File yang di sembunyikan tidak boleh kosong!");
}
else if (rdoPesan.Checked && (txtPesan.Text.Length == 0))
{
error.SetError(txtPesan, "Pesan yang di sembunyika tidak boleh kosong!");
}
else
{
MessageBox.Show("File/Pesan sudah di sembunyikan");
Stream sourceStream = null;
FileStream destinationStream = null;
WaveStream audioStream = null;
Stream messageStream = GetMessageStream();
Stream keyStream = new FileStream(txtKunci.Text, FileMode.Open);
try
{
long countSamplesRequired = WaveUtility.CheckKeyForMessage(keyStream, messageStream.Length);
if (countSamplesRequired > Int32.MaxValue)
{
throw new Exception("Pesan terlalu panjang atau kunci tidak cocok, Kombinasi pesan/kunci membutuhkan" + countSamplesRequired + " Sampel hanya " + Int32.MaxValue + " yang diperbolehkan.");
}
sourceStream = new FileStream(txtFileWav.Text, FileMode.Open);
this.Cursor = Cursors.WaitCursor;
destinationStream = new FileStream(txtHslSmbny.Text, FileMode.Create);
audioStream = new WaveStream(sourceStream, destinationStream);
if (audioStream.Length <= 0)
{
throw new Exception("File wav gagal");
}
if (countSamplesRequired > audioStream.CountSamples)
{
String errorReport = "File terlalu kecil untuk pesan dan kunci\r\n"
+ "Sampel yang tersedia: " + audioStream.CountSamples + "\r\n"
+ "Sampel yang dibutuhkan: " + countSamplesRequired;
throw new Exception(errorReport);
}
WaveUtility utility = new WaveUtility(audioStream, destinationStream);
utility.Hide(messageStream, keyStream);
}
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(); }
if (destinationStream != null) { destinationStream.Close(); }
this.Cursor = Cursors.Default;
}
}
}
private void btnTmpl_Click(object sender, EventArgs e)
{
if (txtEnkrip.Text.Length == 0)
{
error.SetError(txtFileWav, "File Wav Enkrip tidak boleh kososng!");
}
else if (txtKunci1.Text.Length == 0)
{
error.SetError(txtKunci, "Kunci Tidak Boleh Kosong!");
}
else
{
this.Cursor = Cursors.WaitCursor;
FileStream sourceStream = null;
WaveStream audioStream = null;
MemoryStream messageStream = new MemoryStream();
Stream keyStream = new FileStream(txtKunci1.Text, FileMode.Open);
try
{
sourceStream = new FileStream(txtEnkrip.Text, FileMode.Open);
audioStream = new WaveStream(sourceStream);
WaveUtility utility = new WaveUtility(audioStream);
utility.Extract(messageStream, keyStream);
messageStream.Seek(0, SeekOrigin.Begin);
if (rdoHslTmpl.Checked)
{
MessageBox.Show("Pesan Sudah disimpan");
FileStream fs = new FileStream(txtHslTmpl.Text, FileMode.Create);
byte[] buffer = new byte[messageStream.Length];
messageStream.Read(buffer, 0, buffer.Length);
fs.Write(buffer, 0, buffer.Length);
fs.Close();
}
else
{
MessageBox.Show("Pesan Akan ditampilkan");
txtTmplPsn.Text = new StreamReader(messageStream).ReadToEnd();
}
}
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;
}
}
}