The application discloses a kind of based on lattice
cryptosystem and double-layer
blockchain's vehicle networking
security authentication and abnormal protection method this method fuses lattice
cryptosystem (MLWE / RLWE), double-layer alliance chain and decentralized identifier DID technology, successively through
system initialization, DID registration and lattice
key generation, cross-domain
authentication and RLWE key negotiation, reputation feedback and abnormal monitoring, five stages of malicious node
revocation, build "identity
authentication-key negotiation-reputation control-node
revocation" full
closed loop security system.Adopt MLWE to realize anti-
quantum long-term identity
authentication, RLWE completes efficient temporary
session key negotiation;Double-layer
blockchain realizes backbone layer global storage and user layer localization management, reduces
consensus delay, improves real-time performance;Combined with DID decentralized identity and
blockchain reputation mechanism, realize vehicle cross-domain fast authentication, abnormal accurate identification and malicious node
global network isolation.The application has the characteristics of anti-
quantum attack, decentralization, high real-time performance,
engineering can be landed, etc., suitable for vehicle-to-everything (V2X) scene, can meet the identity of vehicle high dynamic communication,
data security and global protection demand.