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Otway-Rees cryptographic protocol Dominique Bolignano and Valérie Ménissier-Morain GIE Dyade, VIP action ---------------------------------------------------------------------- This directory contains a description and a proof of correctness for the Otway-Rees cryptographic protocol, usually used as an example for formalisation of such protocols. The file securite.v contains the description of: - the objects the protocol will manipulate - the knowledge of the reliable principals and of intruders - the guarantees on the keys provided by the certification authority - the protocol itself with the rel function cut in eight subfunctions rel[1-8] - three invariant properties (inv0, inv1 and invP): invP ensures that after any session with this protocol, the key that the certification authority provides to the reliable principals to encrypt their messages along this session is still unknown for intruders. The files inv0.v, inv1.v, invp.v contain the proof of each invariant property. The two last proofs are rather long so they are cut in eight files inv[1p]rel[1-8].v according to each subfunction rel[1-8]. ----------------------------------------------------------------------- Further information: a detailed description of this formalisation will be available soon on http://www.dyade.fr/actions/VIP/Otway-Rees.dvi. V. Ménissier-Morain D. Bolignano GIE Dyade, VIP action Url: http://www.dyade.fr/actions/VIP/ December 1996
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