Faculty Publications
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Item Mobile user authentication protocol with privacy preserving for roaming service in GLOMONET(Springer, 2020) Madhusudhan, R.; Shashidhara, R.In GLObal MObile NETwork (GLOMONET), it is essential to authenticate and provide secure communication between a user, foreign agent, and the home agent using session key. Designing a secure and efficient authentication protocol for roaming users in the mobile network is a challenging. In order to secure communication over an insecure channel, a number of authentication schemes have been proposed. The main weakness of the existing authentication protocols is that attackers have the ability to impersonate a legal user at any time. In addition, the existing protocols are vulnerable to various kind of cryptographic attacks such as insider attack, bit flipping attack, forgery attacks, denial-of-service attack, unfair key agreement and cannot provide user’s anonymity. To remedy these weaknesses and to achieve low communication and computation costs, we proposed a secure authentication scheme for roaming users. In addition, the formal verification tools ProVerif and AVISPA is used to check the correctness of the proposed protocol. Finally, the performance evaluation and simulation results shows that the proposed scheme is efficient in terms of communication and computational cost. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.Item A Secure Anonymous Authentication Protocol for Roaming Service in Resource-Constrained Mobility Environments(Springer, 2020) Madhusudhan, R.; Shashidhara, R.Mobile user authentication is very crucial to ensure the authenticity and privacy of roaming users in mobility environments. The existing communication technologies are highly vulnerable to security threats and pose a great challenge for the wireless networks being used today. Because the mode of a wireless channel is open, these networks do not carry any inherent security and hence are more prone to threats. Consequently, designing a robust scheme for roaming service in the mobile environment is always challenging. Recently, Kuo et al. proposed an efficient authentication protocol for roaming and they claimed that the protocol can resist several security threats in mobile networks. In this paper, we analyze the security of Kuo et al.’s. authentication protocol and show that the protocol is exposed to an insider attack, replay attack, denial-of-service attack and cannot provide fair key agreement, user untraceability, and local password verification. To combat these security flaws, we propose a secure authentication scenario for roaming service using elliptic curve cryptosystem. The proposed authentication protocol is implemented in HLPSL language using automated validation of internet security protocols and applications as a formal verification tool to prove that the novel protocol is free from known attacks. Further, we applied Burrows–Abadi–Needham logic to validate the correctness of the authentication system. The proposed protocol not only improves security but also retains a low communicational and computational overhead. © 2019, King Fahd University of Petroleum & Minerals.