private void CheckSignature()
{
try
{
ResetStatus();
var signer = new SimpleHashSigner(new LsbEncoder());
using (var image = (Bitmap)Image.FromFile(SignedImagePath, true))
{
var result = signer.ValidateSignature(image);
SetStatus(result.SignatureIsValid);
// сохраняем изображение с пометками проверки
var path = Path.Combine(
Path.GetDirectoryName(UnsignedImagePath),
string.Format("{0}_{1}_{2}{3}", Path.GetFileNameWithoutExtension(UnsignedImagePath),
"INVALID_SIGNATURE",
GetTimeStamp(),
Path.GetExtension(UnsignedImagePath))
);
result.ImageWithValidationMarks.Save(path);
Process.Start(path);
}
}
catch (Exception e)
{
SetStatus(false);
System.Windows.MessageBox.Show(e.Message);
}
}
private void Sign()
{
try
{
var signer = new SimpleHashSigner(new LsbEncoder());
using (var image = (Bitmap)Image.FromFile(UnsignedImagePath, true))
{
var newImg = signer.Sign(image);
var newPath = Path.Combine(Path.GetDirectoryName(UnsignedImagePath),
string.Format("{0}_{1}_{2}{3}", Path.GetFileNameWithoutExtension(UnsignedImagePath), "SIGNED",
GetTimeStamp(), Path.GetExtension(UnsignedImagePath))
);
newImg.Save(newPath);
SignedImagePath = newPath;
}
}
catch (Exception e)
{
System.Windows.MessageBox.Show(e.Message);
}
}