Article and system for decentralized creation, distribution,...

Information security – Prevention of unauthorized use of data including prevention...

Reexamination Certificate

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Details

C380S055000, C713S181000, C283S072000

Reexamination Certificate

active

07818812

ABSTRACT:
A universally known and accepted unique item that is independently identifiable and difficult to counterfeit is used as an authenticator item. The identity of this item is included in an authorization calculation which can only be accomplished by an authorizing authority. The authenticator can be a serial numbered item such as a currency bill or note. The document may be created anywhere in plain paper, electronic or other forms. Creation may be by any of an issuing authority, an agent, a bearer and even the buyer. The document's authenticity may be verified without communication back to the issuing authority. The invention allows cancellation to prevent negotiation of an electronic document regardless of how many copies are extant in computers or other form merely by defacing or destroying the associated authenticator.

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