PPLBB: a novel privacy-preserving lattice-based blockchain platform in IoMT

This paper proposes a quantum-secure, privacy-preserving blockchain platform for the Internet of Medical Things (IoMT). It defines a solution to quantum attacks on blockchain by integrating the Dilithium lattice-based signature scheme to enhance security and privacy. A layer-based structure, combined with the Constrained Application Protocol (CoAP), is used to improve the efficiency of data sharing, optimize security, and manage authentication in resource-constrained IoMT environments. Zero-knowledge proofs (ZKP) and lattice-based signatures are used for lightweight authentication and data integrity. Real-time testing on electrochemical sensor data validates the system's efficiency in securely managing IoMT communications. Additionally, event-based smart contracts (EBSC) are implemented to reduce communication costs and minimize blockchain overhead. Experimental results show that Dilithium outperforms other schemes like Falcon and ECDSA, making it a superior solution for real-time IoMT security.