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 an 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. First Symposium on Trustworthy Global Computing, Apr 2005, Edinburgh, United Kingdom. pp.146-162, ⟨10.1007/11580850_9⟩. ⟨inria-00201111⟩