public static void Encrypt(ImageViewModel image, string OutFilePath, string password)
{
int len;
byte[] buffer = new byte[4096];
string originalImagePath = image.AbsoluteMasterPath;
using (FileStream outfs = new FileStream(OutFilePath, FileMode.Create, FileAccess.Write))
{
using (AesManaged aes = new AesManaged())
{
aes.BlockSize = 128;
aes.KeySize = 128;
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
Rfc2898DeriveBytes deriveBytes = new Rfc2898DeriveBytes(password, 16);
byte[] salt = new byte[16];
salt = deriveBytes.Salt;
byte[] bufferKey = deriveBytes.GetBytes(16);
aes.Key = bufferKey;
aes.GenerateIV();
ICryptoTransform encryptor = aes.CreateEncryptor(aes.Key, aes.IV);
using (CryptoStream cse = new CryptoStream(outfs, encryptor, CryptoStreamMode.Write))
{
outfs.Write(salt, 0, 16);
outfs.Write(aes.IV, 0, 16);
using (FileStream fs = new FileStream(originalImagePath, FileMode.Open, FileAccess.Read))
{
while ((len = fs.Read(buffer, 0, 4096)) > 0)
{
cse.Write(buffer, 0, len);
}
}
}
}
}
EncryptImage encryptImage = new EncryptImage();
encryptImage.ID = Guid.NewGuid();
encryptImage.TargetImageID = image.ID;
encryptImage.EncryptFilePath = OutFilePath;
EncryptImageDao dao = new EncryptImageDao();
dao.InsertOrReplace(encryptImage);
}
public override void ConfigureTaskImplementation(AsyncTaskSequence sequence)
{
var books = LibraryManager.Value.BookSource;
foreach (var book in books)
{
ContentsLoadTask.FillContents(LibraryManager.Value, book);
var images = book.Contents;
foreach (var image in images)
{
ContentsLoadTask.Load(image);
sequence.Add(() => _TargetEncryptImage = EncryptImageFacade.FindBy(image.Image.ID));
sequence.Add(() => Encryptor.Decrypt(_TargetEncryptImage.EncryptFilePath, image.Image.AbsoluteMasterPath, Password));
sequence.Add(() => File.Delete($"{Configuration.ApplicationConfiguration.WorkingDirectory}\\{Specifications.MASTER_DIRECTORY}\\{image.Image.ID}{Path.GetExtension(image.Image.AbsoluteMasterPath)}"));
sequence.Add(() => EncryptImageFacade.DeleteBy(image.Image.ID));
}
}
sequence.Add(() => OnmemoryImageManager.Instance.Clear());
sequence.Add(() => Configuration.ApplicationConfiguration.Password = null);
sequence.Add(() => Configuration.ApplicationConfiguration.LibraryIsEncrypted = false);
}