Compositional verification of integrity for digital stream signature protocols

We investigate the application of concurrency theory notions as simulation relations and compositional proof rules for verifying digital stream signature protocols. In particular we formally prove the integrity of the Gennaro-Rohatgi protocols in [7]. As a peculiarity, our technique is able to check a protocol with an unbounded number of parallel processes. We argue also that our approach may be applied to a wider class of stream signature protocols.