Authentication in dynamic peer-to-peer networks based on homomorphic secret sharing

Resumo

We have proposed a new method for authentication and secret key establishment in ad-hoc networks through public channels based only on verifiable homomorphic threshold secret sharing. The secrecy of the method has been analyzed in standard assumptions with regard to the model of an active adversary represented by a coalition consisting of a pre-threshold number of network nodes. The perfect security of the method is proved in the passive adversary model.