// Loads an already encrypted image.
private void loadEncrypImage_Click(object sender, EventArgs e)
{
openFileDialog.Filter = "Image Files(*.jpg;*.jpeg; *.gif; *.bmp; *.png;)|*.jpg;*.jpeg; *.gif; *.bmp; *.png";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
try
{
Form encryptForm = new Encrypted(new Bitmap(openFileDialog.FileName));
encryptForm.Show();
}
catch
{
MessageBox.Show("Can't open file.");
}
}
}
private void encodeImage_Click(object sender, EventArgs e)
{
if (imageLoaded && wavLoaded)
{
// Read the binary file.
System.IO.Stream waveFile = new System.IO.FileStream(@wavPath, System.IO.FileMode.Open);
BinaryReader reader = new BinaryReader(waveFile);
// Read the header information.
int chunkID = reader.ReadInt32();
int fileSize = reader.ReadInt32();
int riffType = reader.ReadInt32();
int fmtID = reader.ReadInt32();
int fmtSize = reader.ReadInt32();
int fmtCode = reader.ReadInt16();
int channels = reader.ReadInt16();
int sampleRate = reader.ReadInt32(); // Will be written to the image (4 bytes)
int fmtAvgBPS = reader.ReadInt32(); // Will be written to the image (4 bytes)
int fmtBlockAlign = reader.ReadInt16(); // Will be written to the image (2 bytes)
int bitDepth = reader.ReadInt16(); // Will be written to the image (2 bytes)
if (fmtCode != 1)
{
MessageBox.Show("Only PCM (format code = 1) sound is supported at this time.");
return;
}
if (channels != 1)
{
MessageBox.Show("Only mono (single channel) sound is supported at this time.");
return;
}
if (fmtSize == 18)
{
// Read any extra values
int fmtExtraSize = reader.ReadInt16();
reader.ReadBytes(fmtExtraSize);
}
int dataID = reader.ReadInt32();
int dataSize = reader.ReadInt32(); // Will be written to the image (4 bytes)
byte[] wav = reader.ReadBytes(dataSize);
int numOfBits = (wav.Length - 1) * 8 + 128; // 128 = 16 bytes of header information.
int leastSigBits = (originalImage.Width - 1) * (originalImage.Height - 1) * 3;
if (numOfBits > leastSigBits)
{
MessageBox.Show("This file is " + numOfBits + " bits long in data, and " + leastSigBits +
" can be stored in the image.\n" + "Your .wav file will be truncated.");
numOfBits = leastSigBits;
dataSize = leastSigBits;
}
// Begin encryption.
// Comparison bytes.
// 0000 0000, 0000 0001
byte nil = 0;
byte zero = 1;
// Get each bit value for storage.
byte[] wavBits = new byte[numOfBits];
// Encode the header information.
uint bitIsolate = 2147483648; // 1000 0000 0000 0000 0000 0000 0000 0000
int wavBitsIndex = 0;
while (bitIsolate != 0)
{
wavBits[wavBitsIndex] = ((dataSize & bitIsolate) == nil) ? nil : zero;
wavBitsIndex++;
bitIsolate /= 2; // Gets to the next most significant bit.
}
// Store the sampleRate.
bitIsolate = 2147483648;
while (bitIsolate != 0)
{
wavBits[wavBitsIndex] = ((sampleRate & bitIsolate) == nil) ? nil : zero;
wavBitsIndex++;
bitIsolate /= 2; // Gets to the next most significant bit.
}
// Store the fmtAvgBPS.
bitIsolate = 2147483648;
while (bitIsolate != 0)
{
wavBits[wavBitsIndex] = ((fmtAvgBPS & bitIsolate) == nil) ? nil : zero;
wavBitsIndex++;
bitIsolate /= 2; // Gets to the next most significant bit.
}
// Store the fmtBlockAlign (2 bytes).
bitIsolate = 32768;
while (bitIsolate != 0)
{
wavBits[wavBitsIndex] = ((fmtBlockAlign & bitIsolate) == nil) ? nil : zero;
wavBitsIndex++;
bitIsolate /= 2; // Gets to the next most significant bit.
}
// Store the bitDepth (2 bytes).
bitIsolate = 32768;
while (bitIsolate != 0)
{
wavBits[wavBitsIndex] = ((bitDepth & bitIsolate) == nil) ? nil : zero;
wavBitsIndex++;
bitIsolate /= 2; // Gets to the next most significant bit.
}
// Encode the wave data.
bitIsolate = 128;
for (int i = 0; wavBitsIndex < wavBits.Length; wavBitsIndex++)
{
// Store each value (0 or 1) for each byte starting from the most significant bit.
wavBits[wavBitsIndex] = ((wav[i] & bitIsolate) == nil) ? nil : zero;
bitIsolate /= 2;
if (0 == bitIsolate)
{
bitIsolate = 128;
i++;
}
}
// Now encode each bit into the encrypted image.
Bitmap encrypted = new Bitmap(originalImage);
// New encrypted RGB:
int red;
int green;
int blue;
int k = 0; // Index for wavBits.
for (int i = 0; i < originalImage.Width; i++)
{
for (int j = 0; j < originalImage.Height; j++)
{
// It's before the end of the wav data and before the last 3 pixels of the image.
if (k + 3 < wavBits.Length)
{
Color color = originalImage.GetPixel(i, j);
// Red
if ((color.R ^ wavBits[k]) % 2 == 0)
{ // No change needed.
red = color.R;
}
else
{
if (wavBits[k] == zero)
red = color.R + 1;
else
red = color.R - 1;
}
k++;
// Green
if ((color.G ^ wavBits[k]) % 2 == 0)
{ // No change needed.
green = color.G;
}
else
{
if (wavBits[k] == zero)
green = color.G + 1;
else
green = color.G - 1;
}
k++;
// Blue
if ((color.B ^ wavBits[k]) % 2 == 0)
{ // No change needed.
blue = color.B;
}
else
{
if (wavBits[k] == zero)
blue = color.B + 1;
else
blue = color.B - 1;
}
k++;
Color encrypColor = Color.FromArgb(red, green, blue);
encrypted.SetPixel(i, j, encrypColor);
}
else
{ // Copy original pixel unchanged.
encrypted.SetPixel(i, j, originalImage.GetPixel(i, j));
}
}
}
// Open the image in a new form.
Form encryptForm = new Encrypted(encrypted);
encryptForm.Show();
}
else
{
MessageBox.Show("Please load an image and .wav file.");
}
}
// Loads an already encrypted image.
private void loadEncrypImage_Click(object sender, EventArgs e)
{
openFileDialog.Filter = "Image Files(*.jpg;*.jpeg; *.gif; *.bmp; *.png;)|*.jpg;*.jpeg; *.gif; *.bmp; *.png";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
try
{
Form encryptForm = new Encrypted(new Bitmap(openFileDialog.FileName));
encryptForm.Show();
}
catch
{
MessageBox.Show("Can't open file.");
}
}
}
private void encodeImage_Click(object sender, EventArgs e)
{
if (imageLoaded && wavLoaded)
{
// Read the binary file.
System.IO.Stream waveFile = new System.IO.FileStream(@wavPath, System.IO.FileMode.Open);
BinaryReader reader = new BinaryReader(waveFile);
// Read the header information.
int chunkID = reader.ReadInt32();
int fileSize = reader.ReadInt32();
int riffType = reader.ReadInt32();
int fmtID = reader.ReadInt32();
int fmtSize = reader.ReadInt32();
int fmtCode = reader.ReadInt16();
int channels = reader.ReadInt16();
int sampleRate = reader.ReadInt32(); // Will be written to the image (4 bytes)
int fmtAvgBPS = reader.ReadInt32(); // Will be written to the image (4 bytes)
int fmtBlockAlign = reader.ReadInt16(); // Will be written to the image (2 bytes)
int bitDepth = reader.ReadInt16(); // Will be written to the image (2 bytes)
if (fmtCode != 1)
{
MessageBox.Show("Only PCM (format code = 1) sound is supported at this time.");
return;
}
if (channels != 1)
{
MessageBox.Show("Only mono (single channel) sound is supported at this time.");
return;
}
if (fmtSize == 18)
{
// Read any extra values
int fmtExtraSize = reader.ReadInt16();
reader.ReadBytes(fmtExtraSize);
}
int dataID = reader.ReadInt32();
int dataSize = reader.ReadInt32(); // Will be written to the image (4 bytes)
byte[] wav = reader.ReadBytes(dataSize);
int numOfBits = (wav.Length - 1) * 8 + 128; // 128 = 16 bytes of header information.
int leastSigBits = (originalImage.Width - 1) * (originalImage.Height - 1) * 3;
if (numOfBits > leastSigBits)
{
MessageBox.Show("This file is " + numOfBits + " bits long in data, and " + leastSigBits +
" can be stored in the image.\n" + "Your .wav file will be truncated.");
numOfBits = leastSigBits;
dataSize = leastSigBits;
}
// Begin encryption.
// Comparison bytes.
// 0000 0000, 0000 0001
byte nil = 0;
byte zero = 1;
// Get each bit value for storage.
byte[] wavBits = new byte[numOfBits];
// Encode the header information.
uint bitIsolate = 2147483648; // 1000 0000 0000 0000 0000 0000 0000 0000
int wavBitsIndex = 0;
while (bitIsolate != 0)
{
wavBits[wavBitsIndex] = ((dataSize & bitIsolate) == nil) ? nil : zero;
wavBitsIndex++;
bitIsolate /= 2; // Gets to the next most significant bit.
}
// Store the sampleRate.
bitIsolate = 2147483648;
while (bitIsolate != 0)
{
wavBits[wavBitsIndex] = ((sampleRate & bitIsolate) == nil) ? nil : zero;
wavBitsIndex++;
bitIsolate /= 2; // Gets to the next most significant bit.
}
// Store the fmtAvgBPS.
bitIsolate = 2147483648;
while (bitIsolate != 0)
{
wavBits[wavBitsIndex] = ((fmtAvgBPS & bitIsolate) == nil) ? nil : zero;
wavBitsIndex++;
bitIsolate /= 2; // Gets to the next most significant bit.
}
// Store the fmtBlockAlign (2 bytes).
bitIsolate = 32768;
while (bitIsolate != 0)
{
wavBits[wavBitsIndex] = ((fmtBlockAlign & bitIsolate) == nil) ? nil : zero;
wavBitsIndex++;
bitIsolate /= 2; // Gets to the next most significant bit.
}
// Store the bitDepth (2 bytes).
bitIsolate = 32768;
while (bitIsolate != 0)
{
wavBits[wavBitsIndex] = ((bitDepth & bitIsolate) == nil) ? nil : zero;
wavBitsIndex++;
bitIsolate /= 2; // Gets to the next most significant bit.
}
// Encode the wave data.
bitIsolate = 128;
for (int i = 0; wavBitsIndex < wavBits.Length; wavBitsIndex++)
{
// Store each value (0 or 1) for each byte starting from the most significant bit.
wavBits[wavBitsIndex] = ((wav[i] & bitIsolate) == nil) ? nil : zero;
bitIsolate /= 2;
if (0 == bitIsolate)
{
bitIsolate = 128;
i++;
}
}
// Now encode each bit into the encrypted image.
Bitmap encrypted = new Bitmap(originalImage);
// New encrypted RGB:
int red;
int green;
int blue;
int k = 0; // Index for wavBits.
for (int i = 0; i < originalImage.Width; i++)
{
for (int j = 0; j < originalImage.Height; j++)
{
// It's before the end of the wav data and before the last 3 pixels of the image.
if (k + 3 < wavBits.Length)
{
Color color = originalImage.GetPixel(i, j);
// Red
if ((color.R ^ wavBits[k]) % 2 == 0)
{ // No change needed.
red = color.R;
}
else
{
if (wavBits[k] == zero)
{
red = color.R + 1;
}
else
{
red = color.R - 1;
}
}
k++;
// Green
if ((color.G ^ wavBits[k]) % 2 == 0)
{ // No change needed.
green = color.G;
}
else
{
if (wavBits[k] == zero)
{
green = color.G + 1;
}
else
{
green = color.G - 1;
}
}
k++;
// Blue
if ((color.B ^ wavBits[k]) % 2 == 0)
{ // No change needed.
blue = color.B;
}
else
{
if (wavBits[k] == zero)
{
blue = color.B + 1;
}
else
{
blue = color.B - 1;
}
}
k++;
Color encrypColor = Color.FromArgb(red, green, blue);
encrypted.SetPixel(i, j, encrypColor);
}
else
{ // Copy original pixel unchanged.
encrypted.SetPixel(i, j, originalImage.GetPixel(i, j));
}
}
}
// Open the image in a new form.
Form encryptForm = new Encrypted(encrypted);
encryptForm.Show();
}
else
{
MessageBox.Show("Please load an image and .wav file.");
}
}
