internal void Add(string file, string password)
{
var document = new AsposePdf.Document(file);
dynamic permissions = document.Permissions;
document.Encrypt(password, OptionApi.GetEncrypted("PDFDefaultOwnerPassword", "?|2^&(*$:@!!*"),(AsposePdf.Permissions) permissions, AsposePdf.CryptoAlgorithm.RC4x40);
document.Save(file);
}