A Framework for Analyzing Probabilistic Protocols and its Application to the Partial Secrets Exchange

Konstantinos Chatzikokolakis (1) , Catuscia Palamidessi (1)

1 COMETE - Concurrency, Mobility and Transactions

We propose a probabilistic variant of the pi-calculus as a framework to specify randomized security protocols and their intended properties. In order to express and verify the correctness of the protocols, we develop a probabilistic version of the testing semantics. We then illustrate these concepts on an extended example: the Partial Secret Exchange, a protocol which uses a randomized primitive, the Oblivious Transfer, to achieve fairness of information exchange between two parties.

Domaines: Logique en informatique [cs.LO]

Konstantinos Chatzikokolakis, Catuscia Palamidessi. A Framework for Analyzing Probabilistic Protocols and its Application to the Partial Secrets Exchange. Theoretical Computer Science, 2007, 389 (3), pp.512-527. ⟨10.1016/j.tcs.2007.09.006⟩. ⟨inria-00200913⟩