Quantum‐Resistant Framework for Secure and Authorized Multi‐Server Networking

ABSTRACT The rapid advancement of quantum computers poses a significant threat to classical cryptographic techniques used to distributed and multi‐server environments. This paper focuses on development of quantum‐resistant framework for authenticated multi‐server networking, designed to ensure confidentiality and integrity in the presence of quantum‐capable adversaries. We have developed a practical three‐party authentication and key agreement (AKA) protocol for multi‐server environments, leveraging the Ring Learning With Errors (RLWE) problem for robust post‐quantum security. After finding weaknesses in Pursharthi and Mishra's work, such as inadequate session key verification and insider attack vulnerabilities, we designed our protocol to address real‐world threats like stolen devices, rogue central authorities, and replay attacks. It features an efficient preparation phase, a secure registration process, and a reliable mutual authentication mechanism, guarding against quantum, side‐channel, and replay attacks. Our detailed security analysis and performance tests confirm its resilience and efficiency, making it a scalable solution for applications like healthcare and IoT (Internet of Things). This protocol provides a structured framework for achieving secure and quantum‐resistant communication.