Group Key Management Schemes On ABE

With the rapid development and wide application of multicast, the security problem is givenmore and more attention. Group key management which has gradually become a research hotspot inmulticast can be divided into three main classes: centralized, distributed and decentralized. Most oftraditional group key management schemes are realized in terms of symmetric encryption system.Although symmetric encryption is quite simple, it has the difficulty of providing high-level security,easy system expansion and low computing cost.ABE Algorithm, one of asymmetric encryption technologies, has developed drastically inrecent years. This thesis analyzes all the mainstream ABE models, including their advantages anddisadvantages, and proposes a collusion-resistant ABE model which can be used for group keymanagement named CGM-ABE. On the basis of CGM-ABE, we then construct a novel distributedgroup key management scheme. Compared with others, our system has not only high security level,good performance, but also can solve the difficulty of system expansion. Then the thesis analyzesthe efficiency and security of the scheme. We implement some parts of our group key managementscheme under Linux system using Pbc libraries.Resistance...