New applications of p-subgroup problems in broadcast encryption services

In this paper, we exploit new applications of the p-subgroup problems in broadcast encryption services and present a new traitor tracing scheme based on the extended modified p-subgroup problem. The proposed scheme is provably as secure as large integer factoring problems and has the advantages of fast computation, efficient join and revocation of users. And the proposed black-box tracing algorithm can trace all the traitors contributing to the pirate decoder.