Method of making secure collaboration between objects of an object-oriented program
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United States of America Patent
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Dec 8, 1998
Grant Date -
N/A
app pub date -
Dec 26, 1996
filing date -
Dec 27, 1995
priority date (Note) -
Expired
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Abstract
A method consists in assigning an authorization level (AUTH) to a client object and a 'dynamic' sensitivity level (DSL) to a method (or data processing procedure) of a server object (ProcObjSv). The dynamic sensitivity level is computed based on static sensitivity levels (SSLs) at the moment when the server object is instantiated. The authorization level of the client object is passed to the method of the server object when the method of the server object is invoked by the client object, and this authorization level (AUTH) is compared with the dynamic sensitivity level (DSL) of the method in order to control access. The method makes it possible to implement a multi-level security model.
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