A fine-grained anonymous handover authentication protocol based on consortium blockchain for wireless networks

Abstract Given the ubiquitous nature of wireless networks in today's society, protecting users' information and identity during handover authentication is paramount. Mobile network operators hope to implement a more flexible and fine-grained authentication to provide better and safer services. In this paper, we propose a new multi-attribute authority attribute-based signature (MA-ABS) scheme that has a constant-size signature. More specifically, we propose an anonymous handover authentication protocol that uses MA-ABS and consortium blockchain. This new protocol not only has fine-grained access control, but it protects the user's privacy and ensures an efficient and private handover.