Résultat majeur : A VERIFICATION APPROACH FOR APPLIED SYSTEM SECURITY
A VERIFICATION APPROACH FOR APPLIED SYSTEM SECURITY 08 juillet 2005
Achim D. Brucker and Burkhart Wolff. A Verification Approach for Applied System Security. In International Journal on Software Tools for Technology Transfer (STTT), 7 (3), pages 233-247, 2005.
We present a method for the security analysis of realistic models over off-the-shelf systems and their configuration by formal, machine-checked proofs. The presentation follows a large case study based on a formal security analysis of a CVS-Server architecture.
The analysis is based on an abstract architecture (enforcing a role-based access control), which is refined to an implementation architecture (based on the usual discretionary access control provided by the posix environment). Both architectures serve as a skeleton to formulate access control and confidentiality properties.
Both the abstract and the implementation architecture are specified in the language Z. Based on a logical embedding of Z into Isabelle/HOL, we provide formal, machine-checked proofs for consistency properties of the specification, for the correctness of the refinement, and for security properties.
