Computer Science – Logic in Computer Science
Scientific paper
2006-12-21
Advances in Computer Science - ASIAN 2006, Secure Software, 11th Asian Computing Science Conference, Tokyo, Japan, December 6-
Computer Science
Logic in Computer Science
20 pages, full version of the paper published at ASIAN'2006, with the same title
Scientific paper
10.1007/978-3-540-77505-8_17
Software security can be ensured by specifying and verifying security properties of software using formal methods with strong theoretical bases. In particular, programs can be modeled in the framework of lambda-calculi, and interesting properties can be expressed formally by contextual equivalence (a.k.a. observational equivalence). Furthermore, imperative features, which exist in most real-life software, can be nicely expressed in the so-called computational lambda-calculus. Contextual equivalence is difficult to prove directly, but we can often use logical relations as a tool to establish it in lambda-calculi. We have already defined logical relations for the computational lambda-calculus in previous work. We devote this paper to the study of their completeness w.r.t. contextual equivalence in the computational lambda-calculus.
Lasota Slawomir
Nowak David
Zhang Yu
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