EM3 A: Efficient mutual multi-hop mobile authentication scheme for PMIP networks

In this paper, we propose EMA, a novel scheme that guarantees the authenticity of a mobile node (MN) and a relay node (RN) in a multi-hop-enabled Proxy Mobile IP (PMIP) network. EMA works in conjunction with a proposed scheme for key establishment, based on symmetric polynomials, to generate a shared secret key between MN and RN. This scheme achieves lower revocation overhead than that achieved by existing symmetric polynomial-based schemes. For a PMIP domain with n points of attachment, EMA achieves t×2−secrecy, whereas the existing authentication schemes achieve only t−secrecy. Computation and communication overhead analysis, as well as simulation results, demonstrate that EMA achieves low authentication delay and is suitable for seamless multi-hop IP communications.