WO2007000761A3 - Method and apparatus for protecting files from none authorized access - Google Patents

Abstract

The patent shows a way to protect your intellectual assets using distributed data and encryption keys across multiple domains, with session based token, as for protecting schema while been place on a portable or unprotected wide access network; While trying to remove one of the need domains or removing the protecting process assets it will be not fully readable, as it simply does not contains the plain data, neither the full encrypted data or the fully set of encrypted keys. While of server a drm like behavior is used. Security session time is pre set and if no communication is establish with the server within this maximum time, file is unreadable. Usage: to protect intellectual assets as: documents, drawing, strategic plains, music, images and movies will be call general name: document The domains can be: server, workstation, portable, network and removable media like smart disk on key, smart cards, phone, any network token, and possibly also a bio information sources like: eyes, finger, heart peace and egg. The document is encrypted on the fly using any technique of encryption process If killing the protecting skill, the data is meaningless Some of the time one of the domain may be missing, e.g the server like in the case of taking portable to a business trip. In this case you get a time constrain on the third removable media, which is store separately and when is missing not all data as well as the public or private key is fully exists on the one of the remaining domains. Also when the time constrain is false no data can be retrieve. This can be good for access only on working hour or for a duration of the travel. Also for Video on demand application this can prevent watching by unauthorized unpaid movie where either the Lan or the card is used as the missing bits parts.