New multiparty authentication services and key agreement protocols

摘要

Many modern computing environments involve dynamic peer groups.nDistributed simulation, multiuser games, conferencing applications, andnreplicated servers are just a few examples. Given the openness ofntoday's networks, communication among peers (group members) must bensecure and, at the same time, efficient. This paper studies the problemnof authenticated key agreement in dynamic peer groups with the emphasisnon efficient and provably secure key authentication, key confirmation,nand integrity. It begins by considering two-party authenticated keynagreement and extends the results to group Diffie-Hellman (1976) keynagreement. In the process, some new security properties (unique tongroups) are encountered and discussed