Full text | Click to download. |
Citation | In Proceedings of 32nd International Colloquium on Automata,
Languages and Programming, pp. 16-29, July 2005
|
Authors | Anupam Datta
Ante Derek John C. Mitchell Vitaly Shmatikov Mathieu Turuani |
We describe a cryptographically sound formal logic for proving protocol security properties without explicitly reasoning about probability, asymptotic complexity, or the ations of a malicious attacker. The approach rests on a new probabilistic, polynomial-time semantics for an existing protocol security logic, replacing an earlier semantics that uses nondeterministic symbolic evauation. While the basic form of the protocol logic remains unchanged from previous work, there are some interesting technical problems involving the difference between efficiently recognizing and efficiently producing a value, and involving a reinterpretation of standard logical connectives that seems necessary to support certain forms of reasoning.