Blockchain-Assisted Lightweight Authentication Protocol for Resource-Constrained IoT Devices in 5G Smart Environments
BLAP-IoT is introduced: a Blockchain-Assisted Lightweight Authentication Protocol over live Hyperledger Fabric 2.5 that leverages elliptic-curve Diffie–Hellman over P-256 curve, keyed MACs, and a three-message challenge-response protocol to provide injective mutual authentication with device key confirmation.