This invention discloses a fully offline accessory key lifecycle
management system and method, belonging to the field of smart terminal accessory
security management technology. This invention constructs a six-stage, closed-loop
management system covering
key generation and
programming, factory pre-binding, initial activation
verification, continuous usage control, offline
key revocation, and physical destruction upon disposal. This invention utilizes a PUF (Physically Unclonable Function) circuit to generate
unique key pairs for each device. The private key is permanently embedded within the
chip, unreadable and unexportable. A physical unidirectional
programming link eliminates the risk of internal
key leakage, enabling offline pre-binding between the terminal and accessories, offline
key revocation, and hardware-level physical key destruction capabilities. This invention operates entirely offline in a
closed loop on the local terminal, without requiring cloud-based
network data interaction. It effectively solves the security flaws of traditional accessory key systems, such as easy
key leakage, easy
mass forgery, lack of offline
revocation capabilities, and the possibility of reused discarded keys. This provides a full-process, hardware-level, and highly reliable
security management solution for the fully offline bionic interactive terminal accessory
ecosystem.