Theft and Conspiracy in the Take-Grant Protection Model.

摘要

A user in a protection system that aids in the transfer of authority within the system is called a conspirator. (The term is not to connote wrong-doing necessarily, since legitimate sharing requires 'conspiracy' in this sense.) Using the Take-Grant Protection Model as an abstraction for a capability-based protection system, necessary and sufficient conditions are developed for determining the number of conspirators required to transfer authority for a given system. The conditions are shown to be testable in polynomial time.(Author)