AUGChain: blockchain-based mobile user authentication scheme in global mobility network

Authentication plays a pivotal role for mobile users to provide security and privacy to their personal information while availing the roaming service in Global Mobility Network (GLOMONET). Most of the schemes offered to address authentication-related problems are built on the centralized semi-trusted server. In such type of server, the privacy and the security of mobile users may be compromised. To eradicate such a problem, here, we propose a user authentication scheme known as AUGChain for GLOMONET. The novelty of the work lies in proposing a scheme, to produce a peer-to-peer network, where each participant can directly interact with the information stored in the secure distributed ledger. Therefore, in this proposed scheme, the unnecessary forward of requisite data by a participant is reduced. Hence, not only minimization of communicational overhead is achieved, but also it minimizes the computational time of the whole scheme. The blockchain technology-based implementation is carried out on hyperledger composer along with hyperledger fabric. The security analysis of the proposed scheme has been done using Burrows–Abadi–Needham logic to ensure mutual authentication between the participants. Moreover, the proposed model, AUGChain, outperforms the other existing schemes by resisting different network security attacks like compromised server attacks, DOS, DDOS attacks, reducing communicational costs as well as computational time a significant amount. This has been done by reducing the execution time of the order of 7.5 ms.