Revocation Mechanism for Hierarchical Clustered Structure in Space-Air-Ground Integrated Network

Public Key Infrastructure (PKI) are offering a technical solution for efficient revocation in PKI based key distribution schemes. Researches revealed that PKI trust and revocation based operations may not be effective for large scale dynamic network which can engender bottlenecking, overhead and undesirable centralization. Identity-Based Encryption (IBE) has figured as secure and efficient public key cryptosystem which does not include the standard PKI concept. Regarding all the advantages of IBE schemes, efficient revocation mechanism was far to be resourceful. Thanks to the pioneering work of Boldyreva et al. for the revocable IBE scheme (RIBE) which designed an efficient scheme on binary hierarchical model and fuzzy IBE combined. Contrary to their scheme, in this paper we will exploit and reform a new network model which can further minimize the work done by the PKG and the users by using a distributed PKG structure called hierarchical multilayer architecture which fits dynamic full-dimensional networks such as Space-Air-ground Integrated Network. The structure employs a logical clustered hierarchy which offers a significant gain in term of key management. We prove that the proposed scheme can resist a series of attacks widely known in wireless networks, adhoc networks or heterogeneous networks. We prove similarly that it qualifies an enhanced performance in comparing with previous schemes proposed in the literature.