Lightweight group authentication protocol for secure RFID system.

Nowadays, wireless technology has been widely used in healthcare and communication systems. It makes our life easier in all respects. A radiofrequency identification device (RFID) has been deployed as a wireless and identity communication device. RFID is a low-resource device that requires cryptography with limited energy regarding the minimum key size. Security and authentication between the server and the tags are key challenges for an RFID system to maintain data privacy. This article presents the security vulnerabilities of recent existing RFID authentication schemes. Keeping the focus on stringent security, privacy, and low cost, we have designed a new lightweight group authentication protocol for the robust RFID system. A single server controls multiple tags by using the proposed lightweight protocol in the RFID system. Formal and informal security analysis is performed compared to other lightweight group authentication articles in which only informal security analysis is carried out. The formal security strength of our proposed protocol is analyzed using the AVISPA (Automated Verification of Internet Security Protocol Analysis) tool, confirming that it is safe from different security threats. The newly designed protocol's performance analysis results are measured in terms of computational cost, storage space, and communication cost. Finally, the combined consequence of security and lightweight of the proposed group authentication protocol is superior and outperforms compared to the existing scheme. [ABSTRACT FROM AUTHOR]