Privacy-preserving registration protocol for mobile network

SUMMARYIn this paper, we propose a novel privacy‐preserving registration protocol that combines the verifier local revocation group signature with mobile IP. The protocol could achieve strong security guarantee, such as user anonymity via a robust temporary identity, local user revocation with untraceability support, and secure key establishment against home server and eavesdroppers. Various kinds of adversary attacks can be prevented by the proposed protocol, especially that deposit‐case attack does not work here. Meanwhile, a concurrent mechanism and a dynamical revocation method are designed to minimize the handover authentication delay and the home registration signals. The theoretical analysis and simulation results show that the proposed scheme could provide high security level besides lightweight computational cost and efficient communication performance. For instance, compared with Yang's scheme, the proposed protocol could decrease the falling speed of handover authentication delay up to about 40% with privacy being preserved. Copyright © 2012 John Wiley & Sons, Ltd. This paper proposes a privacy‐preserving registration protocol for mobile IP network, that is, Mobile IP based on Verifier Local Revocation Group Signature (MIP‐VLRGS). The protocol introduces an efficient VLR group signature into mobile IP, which provides the strongest security. A concurrent mechanism and a dynamical revocation method are designed to minimize the handover authentication delay and the home registration signals. The analysis shows that MIP‐VLRGS could provide high security level services besides lightweight computation price and efficient registration performance.