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Lookup NU author(s): Dr Leo Freitas
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This paper reports on the Xenon project’s use of formal methods. Xenon is a higher-assurance secure hypervi- sor based on re-engineering the Xen open-source hypervisor. The Xenon project used formal specifications both for assur- ance and as guides for security re-engineering. We formally modelled the fundamental definition of security, the hyper- call interface behaviour, and the internal modular design. We used three formalisms: CSP, Z, and Circus for this work. Circus is a combination of Standard Z, CSP, with its seman- tics given in Hoare and He’s unifying theories of program- ming. Circus is suited for both event-based and state-based modelling. Here, we report our experiences to date with using these formalisms for assurance.
Author(s): Freitas L, McDermott J
Publication type: Article
Publication status: Published
Journal: International Journal on Software Tools Technology Transfer
Print publication date: 01/10/2011
ISSN (print): 1433-2779
ISSN (electronic): 1433-2787
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