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Supporting Timing-Channel Free Computations In Multilevel Secure Object-Oriented Databases (1991)
| Content Provider | CiteSeerX |
|---|---|
| Author | Sandhu, Ravi S. Thomas, Roshan Jajodia, Sushil Ravi S., S. |
| Abstract | In an earlier paper [3], Jajodia and Kogan proposed a message filter approach to enforcing mandatory security in multilevel object-oriented databases. The key idea in the message filter model is that all information exchange be permitted solely through messages and that security be enforced by a message filter component that mediates these messages. In a recent paper [8] the authors proposed a kernelized architecture for implementing the message filter model. A major complication in implementing this model arises due to timing channels intrinsic to the object-oriented model of computing. These channels arise because object-oriented "write-up" operations are abstract and arbitrarily complex (as opposed to primitive memory writes). One approach to closing these timing channels is to execute a logically sequential computation as concurrent pieces. Our earlier paper presented an execution model for managing such concurrent computations as well as a multiversion synchronization protocol to ... |
| File Format | |
| Publisher Date | 1991-01-01 |
| Access Restriction | Open |
| Subject Keyword | Object-oriented Model Memory Writes Multilevel Secure Object-oriented Database Multilevel Object-oriented Database Message Filter Component Multiversion Synchronization Protocol Message Filter Approach Concurrent Piece Message Filter Model Timing-channel Free Computation Major Complication Object-oriented Write-up Operation Concurrent Computation Kernelized Architecture Execution Model Timing Channel Sequential Computation Mandatory Security |
| Content Type | Text |
