public static void EncryptInImage(string path, string input)
{
var img = new Bitmap(path);
var pixels = DEShelper.GetPixels(img).ToArray();
var binInput = DEShelper.TextToBinary(input).ToArray();
for (int i = 0; i < binInput.Count(); i++)
{
img.SetPixel(i % img.Width, i / img.Width, Color.FromArgb(pixels[i].A, ChangeByte(pixels[i].R, binInput[i]), pixels[i].G, pixels[i].B));
}
img.Save($"encrypted{path}");
}
public static string DecryptTextFromImage(string path, int length)
{
var img = new Bitmap(path);
var pixels = DEShelper.GetPixels(img).ToArray();
var binOutput = new List <int>();
for (int i = 0; i < 8 * length; i++)
{
binOutput.Add(GetLastBit(pixels[i].R));
}
return(DEShelper.BinaryToText(binOutput.ListToString()));
}
public void DecryptImage(string imagePath, IEnumerable <int> key, string outName)
{
Console.WriteLine("Decrypting");
var colors = DEShelper.GetPixels(imagePath).ToArray();
var encryptedColors = new List <IEnumerable <int> >();
var len = colors.Count();
for (int i = 0; i < len; i += 2)
{
var bin1 = Convert.ToString(Convert.ToInt64(colors[i].Name, 16), 2).PadLeft(32, '0').ToIntList();
var bin2 = Convert.ToString(Convert.ToInt64(colors[i + 1].Name, 16), 2).PadLeft(32, '0').ToIntList();
encryptedColors.Add(Decrypt(bin1.Concat(bin2), key).ToList());
}
Console.WriteLine("Decrypted\nSaving...");
DEShelper.SaveImage64x64(encryptedColors, outName);
Console.WriteLine($"Saved {outName}");
}
