Patent ID: 8656159
Filing Date: 2014-02-18
Classification: G06F,G06Q,H04L

Abstract:
1. A method comprising: receiving a modifiable electronic document, the modifiable electronic document comprising a first unique document identification; generating a new version of the modifiable electronic document; encrypting the new version of the modifiable electronic document using an encryption key that is used to encrypt the modifiable electronic document and different versions of the modifiable electronic document; assigning a second unique document identification to the new version of the modifiable electronic document; assigning the first unique document identification as a parent identification to the new version of the modifiable electronic document, the parent identification being the same as the first unique document identification; assigning the document identification of a root document from which the different versions of the modifiable electronic document are created as a root identification for the new version; and saving the new version of the modifiable electronic document.