Extending noninterference properties to the timed world

Most previous work on information flow in process algebras has been based on untimed models of concurrency. It is obvious, however, that an observer might well use time to gain information about what a high-level user of the system is doing. We use the priority tock view (a discrete timed model) to extend several traditional untimed noninterference properties to the timed world. These are the determinism-based conditions of [14], [15] and [17], and Forster’s local noninterference properties [6], [7]. Keywords Information flow, noninterference, discrete time, CSP

• Type: Conference
• Year: 2006
• Where: SAC
• Authors: Jian Huang, A. W. Roscoe
• Keywords: Applied Computing, Discrete Timed Model, Noninterference Properties, SAC 2006, Untimed Noninterference Properties