/**
* Masks a file with an image given a file and image.
*/
public static string[] Mask(string file, string image)
{
//Create a new Bitmap objects and map pixels/bits.
var img = new Bitmap(image);
Color[] pixels = GetPixels(img);
var pixelBits = new int[pixels.Length];
for (int n = 0, length = pixels.Length; n < length; n++)
pixelBits[n] = Util.ColorToBits(pixels[n]);
//Read all bits from the file to mask.
byte[] bytes = File.ReadAllBytes(file);
var bits = new BitArray(bytes);
//Merge bits.
var tour = new Tour(img.Width, img.Height);
pixelBits = Merge(bits, tour, pixelBits);
//Generate pixel colors based on each the merged bits.
for (int n = 0, length = pixelBits.Length; n < length; n++)
pixels[n] = Util.BitsToColor(pixelBits[n]);
Bitmap maskedImage = CreateImage(img.Width, img.Height, pixels);
//Save the new image.
string dir = Path.GetDirectoryName(image);
string name = Path.GetFileNameWithoutExtension(image);
string extension = Path.GetExtension(image);
Benchmark mark = new Benchmark("Time to Write Masked File", true);
maskedImage.Save(dir + "\\" + name + " - Masked" + extension);
mark.Time();
//Generate AES keys and return.
mark = new Benchmark("Time to Generate Encryption Keys", true);
string[] hash = Crypt.Encrypt(Path.GetFileName(file) + ":" + bits.Length + ":" + tour.Export());
mark.Time();
return hash;
}
