According to one example, a method is described in which a computer system receives a composite document with at least one referenced resource location. The computer system decrypts the referenced resource location, determines if the referenced resource location requires loading, and determines if the referenced resource location is editable. In the event that the referenced resource location requires loading, the referenced resource may be loaded from the referenced resource location and decrypted. In the event that the referenced resource location is editable, the referenced resource location may be edited.