private void loadWavFile_Click(object sender, EventArgs e)
{
DialogResult res = loadWav.ShowDialog();
if (res == System.Windows.Forms.DialogResult.OK)
{
audio = File.ReadAllBytes(loadWav.FileName);
WavAudio wav = new WavAudio(audio);
if (wav.data != null)
{
OutputConsole.Write(string.Format("Audio loaded \nSamples found: {0}", wav.totalSamples));
OutputConsole.Write(string.Format("Maximum file size for this file = {0} - (file size digits + file name character count) bytes", FileSizeFormatProvider.GetFileSize(wav.bytesAvailable)));
currentMode = Mode.Audio;
if (image != null)
{
image.Dispose();
}
image = null;
imageBox.Image = null;
audioLabel.Text = string.Format("Using Wav File: {0}", loadWav.SafeFileName);
audioLabel.Visible = true;
}
else
{
audio = null;
}
}
}
private void loadImage_Click(object sender, EventArgs e)
{
loadDialog.FileName = "*.*";
DialogResult res = loadDialog.ShowDialog();
if (res == System.Windows.Forms.DialogResult.OK)
{
if (image != null)
{
image.Dispose();
}
string ext = Path.GetExtension(loadDialog.FileName);
if (ext == ".png" || ext == ".bmp" || ext == ".jpg")
{
try
{
image = Image.FromFile(loadDialog.FileName);
imageBox.Image = image;
OutputConsole.Write(string.Format("Image loaded \nTotal pixels = {0}", image.Width * image.Height));
OutputConsole.Write(string.Format("Maximum file size for this image = {0} - (file size digits + file name character count) bytes", FileSizeFormatProvider.GetFileSize((image.Width * image.Height) - 2)));
currentMode = Mode.Image;
audio = null;
audioLabel.Visible = false;
}
catch
{
image = null;
imageBox.Image = null;
}
}
}
}
private static void EncodeFileWithColor2(ref Bitmap img, byte[] file, string filename)
{
Bitmap backup = img.Clone() as Bitmap;
int maxLinear = img.Width * img.Height;
OutputConsole.Write(string.Format("File size: {0}", FileSizeFormatProvider.GetFileSize(file.Length)));
SeedRNG generator = new SeedRNG((maxLinear + img.Width).GetHashCode(), maxLinear, true);
OutputConsole.Write("Seed generated");
int extraBytes = 2 + filename.Length + file.Length.ToString().Length;
HiddenFile f = new HiddenFile(file, filename);
f.cipherFile((maxLinear + img.Width).GetHashCode());
OutputConsole.Write("Ciphering file...");
if (file.Length < maxLinear - extraBytes)
{
string fileLength = file.Length.ToString();
OutputConsole.Write("Processing image...");
OutputConsole.Write("Writing metadata...");
for (int i = 0; i < fileLength.Length; i++)
{
Point point = LinearIndexToPoint(generator.NextN, img.Width, img.Height);
Color pixel = img.GetPixel(point.X, point.Y);
char letter = fileLength[i];
int value = Convert.ToInt32(letter);
img.SetPixel(point.X, point.Y, EncodePixel(pixel, value));
}
//Insert # to separate file length from filename
Point point1 = LinearIndexToPoint(generator.NextN, img.Width, img.Height);
Color pixel1 = img.GetPixel(point1.X, point1.Y);
int value1 = Convert.ToInt32('#');
img.SetPixel(point1.X, point1.Y, EncodePixel(pixel1, value1));
//Insert filename and finish with null char
for (int i = 0; i < filename.Length; i++)
{
Point point = LinearIndexToPoint(generator.NextN, img.Width, img.Height);
Color pixel = img.GetPixel(point.X, point.Y);
char letter = filename[i];
int value = Convert.ToInt32(letter);
img.SetPixel(point.X, point.Y, EncodePixel(pixel, value));
}
point1 = LinearIndexToPoint(generator.NextN, img.Width, img.Height);
pixel1 = img.GetPixel(point1.X, point1.Y);
value1 = 0;
img.SetPixel(point1.X, point1.Y, EncodePixel(pixel1, value1));
OutputConsole.Write("Writing file data...");
//Write file
for (int i = 0; i < file.Length; i++)
{
Point point = LinearIndexToPoint(generator.NextN, img.Width, img.Height);
Color pixel = img.GetPixel(point.X, point.Y);
int value = f.file[i];
img.SetPixel(point.X, point.Y, EncodePixel(pixel, value));
}
OutputConsole.Write("Finished embedding file");
}
else
{
OutputConsole.Write("File size is greater than total pixels in image with extra data, resize or use another image to encrypt this file");
img = null;
}
}
