Smart grid multilayer consensus password-authenticated key exchange protocol

In this paper, we consider smart grid system demands on remote controlling a smart appliance from up to the central controller layer, in a confidential fashion and immune from any in-between principles´ intrusion. For instance, we need to remotely turn off a low-priority high-demand appliance in case of crisis and emergency, or manage a plug-in electric vehicles recharging. Hence a Home Area Network (HAN) controller should be prevented from superimposing or differing caused by decryption and re-encryption these packets. Comparing to X.1035 standard, we use only one hash function and utilize a primitive password between the appliance and HAN controller, and state four individual consensus password-authenticated symmetric key establishments between the appliance and upstream controllers during only 12 packets. We improve security process data delivery time by 50% to 75% while provide various attacks resilience like replay, off-line guessing, Denning-Sacco, compromised impression, ephemeral key compromise impression, unknown key-share and man in the middle.