private static void Encrypt(object files)
{
List<string> imgFiles = files as List<string>;
/*
Parallel.ForEach(imgFiles, fileName =>
{
}
);
*/
foreach (String fileName in imgFiles)
{
Image image = Image.FromFile(fileName);
Image thumb = image.GetThumbnailImage(120, 120, () => false, IntPtr.Zero);
string newFile = Path.ChangeExtension(fileName, "thumb");
string loc = "Thumbnails\\" + Path.GetFileName(newFile);
thumb.Save(loc);
string name = Path.GetFileNameWithoutExtension(fileName);
string type = Path.GetExtension(fileName);
EncryptedImage encryptedImage = new EncryptedImage();
encryptedImage.Name = name;
encryptedImage.PathThumb = loc;
encryptedImage.PathOriginal = fileName;
encryptedImage.Type = type;
LocalData.insertEncryptedImage(encryptedImage);
ImageEncoder.EncodeImage(fileName, encryptedImage);
}
}
public static void updateEncryptedImage(EncryptedImage encryptedImage)
{
StringBuilder sb = new StringBuilder();
sb.Append("idx='" + encryptedImage.Idx + "',");
sb.Append("name='" + encryptedImage.Name + "',");
sb.Append("key='" + encryptedImage.Key + "',");
sb.Append("type='" + encryptedImage.Type + "',");
sb.Append("pathEncrypted='" + encryptedImage.PathEncrypted + "',");
sb.Append("pathThumb='" + encryptedImage.PathThumb + "',");
sb.Append("pathOriginal='" + encryptedImage.PathOriginal + "'");
DBHandler.executeCmd("UPDATE Images SET " + sb + " WHERE pathOriginal='" + encryptedImage.PathOriginal + "'");
}
public void ConvertImageToGrayScale(string src, string dst)
{
double scale = Math.Pow(2.0, 40);
var img = ImageIo.ReadImage(src);
var encryptedImage = EncryptedImage.FromBmp(img, encryptor, encoder, scale, PolyModulusDegree / 2);
// Call server. Server just has the encoder and evaluator.
var encryptedGrayScaleImage = _imageProcessorServer.ConvertToGrayScale(encryptedImage);
var decryptedGrayScaleImage = encryptedGrayScaleImage.DecryptFromVector(decryptor, encoder);
var dataP = PlaintextImageProcessor.ConvertToGrayScale(img);
ImageIo.SaveImage(dst, decryptedGrayScaleImage);
}
public static int WIDTH = 400; //set new image width
#endregion Fields
#region Methods
public static void EncodeImage(String dir, EncryptedImage imageData)
{
Image inputImage;
Bitmap inputBitmap;
int[,] path = new int[SWAPS, 2];
String ImageKey;
//retreving image from directory
inputImage = Image.FromFile(dir);
inputBitmap = new Bitmap(inputImage);
//resize the pic to 400 x 300 pix
inputBitmap = Resize_Image(inputBitmap, WIDTH, HIGHT);
//save program id 13 bit in image <0 .. 12>
make_id(inputBitmap);
//save user id 32 bit in image <13 .. 44>
make_user_id(inputBitmap);
//get image id
String imageID = LocalData.getUserProperties().ImageId;
//save image id 32 bit in image <45 .. 76>
make_image_id(inputBitmap, imageID);
//Encode the image
Random_Shuffle(path);
ImageKey = Save_Path(path);
Encode_Image(path, inputBitmap);
//send image info to server
bool send = true;//
send_to_server(ImageKey);
if (send)
{
//save encoded image
string loc = "EncodedImages\\" + Path.GetFileName(dir);
inputBitmap.Save(loc);
//save image in dataBase
save_in_dataBase(imageData, imageID, ImageKey, loc);
}
}
/// <summary>
/// Converts an image to grayscale.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="evaluator">The evaluator.</param>
/// <returns></returns>
public EncryptedImage ConvertToGrayScale(
EncryptedImage image)
{
var rCtx = MultiplyPlain(image._rValueVector, RMultiplePtx);
var gCtx = MultiplyPlain(image._gValueVector, GMultiplePtx);
var bCtx = MultiplyPlain(image._bValueVector, BMultiplePtx);
var grayCtx = AddMany(rCtx, gCtx, bCtx);
// WARNING: NULL values can cause error on decryption.
return(new EncryptedImage(
image._width,
image._height,
image._aValues,
null,
null,
null,
grayCtx,
grayCtx,
grayCtx));
// int grayScale = (int)(((actualColor.R * 0.3) + (actualColor.G * 0.59) + (actualColor.B * 0.11)));
}
private static void save_in_dataBase(EncryptedImage imageData, String imageId, String imageKey, String imagePath)
{
imageData.Idx = imageId;
imageData.Key = imageKey;
imageData.PathEncrypted = imagePath;
LocalData.updateEncryptedImage(imageData);
}
public static void insertEncryptedImage(EncryptedImage encryptedImage)
{
DBHandler.insert("INSERT INTO Images(idx , name , key , type , pathEncrypted , pathThumb , pathOriginal) VALUES('" + encryptedImage.Idx + "' , '" + encryptedImage.Name + "' , '" + encryptedImage.Key + "' , '" + encryptedImage.Type + "' ,'" + encryptedImage.PathEncrypted + "' , '" + encryptedImage.PathThumb + "' , '" + encryptedImage.PathOriginal + "')");
}
