Security Vulnerabilities of a Quadruple Authentication Protocol for Personal Data Protection in Mechanical Engineering-Based IoT Devices
This study analyzed vulnerabilities in a four-factor authentication protocol for IoMT, which uses password, smart card, biometrics, and PUFs. Key weaknesses include biometric protection, key management, session hijacking, and resource constraints. Proposed solutions involve homomorphic encryption, blockchain key management, lightweight and quantum-resistant cryptography, and AI-based adaptive security. This research provides a foundation for improving IoMT security protocol reliability in digital healthcare.