private void loadFile_Click(object sender, EventArgs e)
{
string file = audioManipulation.getFille("(*.wav)|*.wav");
if (Path.GetExtension(file) == ".wav")
{
audioBeforeSteganography = audioManipulation.getWavFile(file);
isSteganograph.Text = audioSteganography.CheckWav(audioBeforeSteganography);
AudioPlayOrginal = new AudioPlay(file);
var bitsToEncode = new BindingList <KeyValuePair <int, int> >();
for (int i = 1; i <= audioBeforeSteganography.bitsPerSample; i++)
{
bitsToEncode.Add(new KeyValuePair <int, int>(i, i));
}
comboBox1.Visible = true;
comboBox1.DataSource = bitsToEncode;
comboBox1.ValueMember = "Key";
comboBox1.DisplayMember = "Value";
comboBox1.SelectedIndex = 0;
label1.Visible = true;;
encodeLabel.Text = string.Format("Wykożystujesz plik wave: {0}", Path.GetFileName(file));
encodeLabel.Visible = true;
calculateFreeMemorySize();
}
}
public string saveWav(WaveFille wave, Label label)
{
try
{
Stream stream;
saveFileDialog1.Filter = string.Format(" (*.wav)|*.wav");
saveFileDialog1.FilterIndex = 2;
saveFileDialog1.RestoreDirectory = true;
saveFileDialog1.FileName = "wave.wav";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
if ((stream = saveFileDialog1.OpenFile()) != null)
{
stream.Write(wave.data, 0, wave.data.Length);
stream.Flush();
stream.Close();
label.Text = "Plik został zapisany";
label.ForeColor = Color.Green;
return(saveFileDialog1.FileName);
}
label.Text = "Nie zapisano pliku";
label.ForeColor = Color.Red;
return("none");
}
label.Text = "Nie zapisano pliku";
label.ForeColor = Color.Red;
return("none");
}
catch (Exception ex)
{
label.Text = "Nieudało śię zapisać pliku zprubój ponownie z inną nazwą";
label.ForeColor = Color.Red;
return("none");
}
}
private void loadSteganographWav_Click(object sender, EventArgs e)
{
string file = audioManipulation.getFille("(*.wav)|*.wav");
if (Path.GetExtension(file) == ".wav")
{
audioSteganohraph = audioManipulation.getWavFile(file);
AudioPlaySteganohraph = new AudioPlay(file);
fille2Label.ForeColor = Color.Black;
fille2Label.Text = string.Format("Wykożystujesz plik wave: {0}", Path.GetFileName(file));
fille2Label.Visible = true;
}
else
{
AudioPlaySteganohraph = null;
audioSteganohraph = null;
fille2Label.Text = "Nie wybrałeś pliku wav";
fille2Label.ForeColor = Color.Red;
if (audioSteganohraphIsPalyed)
{
AudioPlaySteganohraph.Pause();
audioSteganohraphIsPalyed = false;
playSteganograph.Text = "Play";
}
}
}
public string DecryptBinaryInWave(byte[] wav, int bity, out string extension)
{
try
{
WaveFille audio = new WaveFille(wav);
int counter = 0, ammountToTake = 0, elementsToSkip = 0;
string maxsize = Convert.ToString(audio.totalSamples * bity, 2);
uint andBity = 0;// CalculateSumPowerOfTwo(bity);
if (audio.bitsPerSample == 8)
{
andBity = (uint)(0xFF >> (8 - bity));
}
if (audio.bitsPerSample == 16)
{
andBity = (uint)(0xFFFF >> (16 - bity));
}
extension = "";
StringBuilder binaryDataStringBiulder = new StringBuilder();
if (bity <= audio.bitsPerSample)
{
for (int i = 0; i < audio.samples.Count; i++)
{
uint samplequant = audio.samples[i] & (uint)andBity;
binaryDataStringBiulder.Append(Convert.ToString(samplequant, 2).PadLeft(bity, '0'));
if (binaryDataStringBiulder.Length >= maxsize.Length + extensionLenghtBinary)
{
extension = convertBinaryToString(binaryDataStringBiulder.ToString().Substring(0, extensionLenghtBinary));
counter = Convert.ToInt32(binaryDataStringBiulder.ToString().Substring(extensionLenghtBinary, maxsize.Length), 2) + extensionLenghtBinary + maxsize.Length;
ammountToTake = Convert.ToInt32(binaryDataStringBiulder.ToString().Substring(extensionLenghtBinary, maxsize.Length), 2);
binaryDataStringBiulder.Clear();
elementsToSkip = maxsize.Length + extensionLenghtBinary;
break;
}
}
for (int i = 0; i < audio.samples.Count && counter > 0; i++)
{
uint samplequant = audio.samples[i] & (uint)andBity;
binaryDataStringBiulder.Append(Convert.ToString(samplequant, 2).PadLeft(bity, '0'));
counter -= bity;
}
return(binaryDataStringBiulder.ToString().Substring(elementsToSkip).Substring(0, ammountToTake));
}
return(null);
}
catch (Exception ex)
{
extension = "";
return(null);
}
}
private void encode_Click(object sender, EventArgs e)
{
int bity;
if (audioBeforeSteganography != null && textBytes != null && int.TryParse(comboBox1.Text, out bity) && taken <= maxsize)
{
audioAfterSteganography = audioSteganography.EncryptBinaryInWave(audioBeforeSteganography.data, textBytes, bity, "txt");
string file = audioManipulation.saveWav(audioBeforeSteganography, message);
if (Path.GetExtension(file) == ".wav")
{
AudioPlaySteganography = new AudioPlay(file);
}
}
else
{
message.Text = "Coś jest nietak z podanymi danymi";
message.ForeColor = Color.Red;
}
}
private void loadFile_Click(object sender, EventArgs e)
{
string file = audioManipulation.getFille("(*.wav)|*.wav");
if (file != "none" && Path.GetExtension(file) == ".wav")
{
audioStrganograph = audioManipulation.getWavFile(file);
isSteganograph.Text = audioSteganography.CheckWav(audioStrganograph);
label1.Text = string.Format("Używasz pliku wave: {0}", Path.GetFileName(file));
var bitsToEncode = new BindingList <KeyValuePair <int, int> >();
for (int i = 1; i <= audioStrganograph.bitsPerSample; i++)
{
bitsToEncode.Add(new KeyValuePair <int, int>(i, i));
}
comboBox1.Visible = true;
comboBox1.DataSource = bitsToEncode;
comboBox1.ValueMember = "Key";
comboBox1.DisplayMember = "Value";
comboBox1.SelectedIndex = 0;
AudioPlay = new AudioPlay(file);
}
}
public string CheckWav(WaveFille audio)
{
StringBuilder textBinary = new StringBuilder();
string extension = "";
uint andBity = 0;
for (int bity = 1; bity <= audio.bitsPerSample; bity++)
{
//andBity = CalculateSumPowerOfTwo(bity);
if (audio.bitsPerSample == 8)
{
andBity = (uint)(0xFF >> (8 - bity));
}
if (audio.bitsPerSample == 16)
{
andBity = (uint)(0xFFFF >> (16 - bity));
}
for (int j = 0; j < extensionLenghtBinary; j++)
{
uint samplequant = audio.samples[j] & (uint)andBity;
textBinary.Append(Convert.ToString(samplequant, 2).PadLeft(bity, '0'));
if (textBinary.Length >= extensionLenghtBinary)
{
extension = convertBinaryToString(textBinary.ToString().Substring(0, extensionLenghtBinary));
if (extensionsList.Contains(extension))
{
return("Plik wav jest steganografem i zawiera plik z rozszeżeniem " + extension);
}
textBinary.Clear();
break;
}
}
}
return("Plik wav nie jest steganografem");
}
private void encode_Click(object sender, EventArgs e)
{
int bity;
if (audioBeforeSteganography == null)
{
encodeLabel.Text = "Nie wybrałeś pliku wav";
encodeLabel.ForeColor = Color.Red;
return;
}
if (textBytes == null)
{
decodeLabel.Text = "Nie wybrałeś pliku do zakodowania";
decodeLabel.ForeColor = Color.Red;
return;
}
if (audioBeforeSteganography != null && textBytes != null && int.TryParse(comboBox1.Text, out bity) && taken <= maxsize)
{
audioAfterSteganography = audioSteganography.EncryptBinaryInWave(audioBeforeSteganography.data, textBytes, bity, encodedeExtensionAnyFille);
string file = audioManipulation.saveWav(audioBeforeSteganography, message);
if (Path.GetExtension(file) == ".wav")
{
AudioPlaySteganography = new AudioPlay(file);
}
playSteganograph.Visible = true;
label5.Visible = true;
}
else
{
message.Text = "Coś jest nietak z podanymi danymi być może plik który chcesz zakodować jest za duży";
message.ForeColor = Color.Red;
playSteganograph.Visible = false;
label5.Visible = false;
}
}
public WaveFille EncryptBinaryInWave(byte[] wav, string textBinary, int bity, string extension)
{
try
{
WaveFille audio = new WaveFille(wav);
int maxsize = (int)audio.totalSamples * bity;
int counter = 0;
textBinary = createEncodingHeder(textBinary.Length, extension, maxsize, bity) + textBinary;
int y = textBinary.Length;
while (textBinary.Length % (bity) != 0)
{
textBinary += '0';
}
if (textBinary.Length <= maxsize && bity <= audio.bitsPerSample)
{
if (audio.bitsPerSample == 8)
{
//uint quant = CalculateSumPowerOfTwo((int)audio.bitsPerSample) - CalculateSumPowerOfTwo(bity);
uint quant = (uint)((0xFF << bity) & 0xFF);
for (int i = 0; i < audio.samples.Count; i++)
{
uint sampleValue = audio.samples[i];
sampleValue = (sampleValue & (uint)quant);
sampleValue |= Convert.ToByte(textBinary.Substring(counter, bity), 2);
audio.samples[i] = sampleValue;
counter += bity;
if (counter >= textBinary.Length)
{
break;
}
}
}
if (audio.bitsPerSample == 16)
{
uint quant2 = CalculateSumPowerOfTwo((int)audio.bitsPerSample) - CalculateSumPowerOfTwo(bity);
uint quant = (uint)((0xFFFF << bity) & 0xFFFF);
for (int i = 0; i < audio.samples.Count; i++)
{
uint sampleValue = audio.samples[i];
sampleValue = (sampleValue & (uint)quant);
sampleValue |= Convert.ToUInt16(textBinary.Substring(counter, bity), 2);
audio.samples[i] = sampleValue;
counter += bity;
if (counter >= textBinary.Length)
{
break;
}
}
}
audio.Save(counter / bity);
return(audio);
}
else
{
return(null);
}
}
catch (Exception ex)
{
return(null);
}
}
