public static async Task <ProcessingResult> Decrypt(string originalFileName, Bitmap originalKeyBitmap)
{
var decryptionFileName = $"{originalFileName}_Container";
var decryptionFilePath = Path.Combine(MainConstants.ContainersProcessedPath, $"{decryptionFileName}.bmp");
var decryptionStopwatch = Stopwatch.StartNew();
var decryptionResult = await Svd.Decrypt(new Bitmap(decryptionFilePath), decryptionFileName);
decryptionStopwatch.Stop();
var decryptionPsnr = Helpers.CalculatePsnr(originalKeyBitmap, decryptionResult);
return(new ProcessingResult
{
Psnr = decryptionPsnr,
Time = decryptionStopwatch.Elapsed
});
}
public static async Task <ProcessingResult> DecryptFromBitmap(Bitmap encrypptedContainer, string originalFileName, Bitmap originalKeyBitmap)
{
var decryptionFileName = $"{originalFileName}_Container";
var decryptionStopwatch = Stopwatch.StartNew();
var decryptionResult = await Svd.Decrypt(encrypptedContainer, decryptionFileName,
originalKeyBitmap.Width, originalKeyBitmap.Height);
decryptionStopwatch.Stop();
var decryptionMse = Helpers.CalculateMse(originalKeyBitmap, decryptionResult);
var decryptionPsnr = Helpers.CalculatePsnr(decryptionMse);
originalKeyBitmap.Dispose();
return(new ProcessingResult
{
Psnr = decryptionPsnr,
Mse = decryptionMse,
Time = decryptionStopwatch.Elapsed,
ExtractedWatermark = decryptionResult
});
}