SAMAFog: Service-Aware Mutual Authentication Fog-based Protocol

Authentication is an important and challenging issue for the security of fog computing where fog nodes afford several services (storage, service access, computing, ..) to edge users. Operators and cloud service providers try to take profit from this paradigm to be closer to customers and satisfy their desires. They try to ensure privacy and secure mutual authentication between users and fog nodes when accessing services. The mainly existing fog-based authentication solutions didn't achieve complete security needs and/or have large computation overheads. In this paper, SAMAFog: a service aware and efficient mutual authentication protocol for the fog network is proposed. The mutual authentication between fog servers and users and the establishment of the session key are ensured using low-cost cryptographic primitives such as ECC and one_way hash function. The security features of the proposed scheme are formally evaluated using BAN-Logic method and AVISPA tool. In addition, comparative performance analysis is given among our scheme and relevant protocols. The results of comparative analysis illustrate that the proposed protocol provides robust, lightweight and efficient security performance for mutual authentication in fog environment.