Quantum-safe three-party lattice based authenticated key agreement protocol for mobile devices

Mobile-based web apps have gained popularity among phone devices because of the rapid advancement of mobile communication and equipment capabilities. Users may utilize their handsets to obtain different types of online services through the Internet at any time and from anywhere. The last three decades have seen widespread use of the three-party AKA protocol, built on asymmetric-key cryptography to produce a private communication channel via any cellular connection between two mobile users. The server can help two mobile users with the assistance of a three-party authentication protocol so that they may create a high-entropy shared private session key. According to several recent studies, all the conventional public-key cryptosystem-based three-party AKA schemes could not withstand attacks due to quantum computing. To get resistance to quantum attacks, Islam and Basu (2021) proposed a new password-based three-party authentication protocol for mobile users using ideal lattices. We improve the efficiency of lattice-based authenticated key exchange protocol and the security of this protocol by making it resistant to password-guessing attacks. A comparative study along with performance and security evaluation is also presented, which demonstrates the applicability of the proposed design.