Security-preserving asymmetric protocol encapsulation

摘要: Query-response based protocols between a client and server such as SSL, TLS, SSH are asymmetric in the sense that querying responding play different roles, for which there is need two-way linkability queries responses within protocol. We motivated by observation though results exist other related contexts, no provably secure scheme has been applied to setting of client-server protocols, differ from conventional communications on above points. show how communication these setting. In doing so, we propose new primitive: query-response encapsulation scheme; give an instantiation, demonstrate this primitive can be used our purpose. proof encapsulation, preserve notion "local-security".