CAP Architecture Blueprint

Control Authority Protocol (CAP) defines how terminal devices verify that a Fay (iFay or coFay) has been authorized by its human host to legitimately access terminal resources. The protocol uses an offline Authorization_Descriptor as its core mechanism, supplemented by an online Trusted_Ticket, covering authorization verification, session management, control authority handover, resource access modes, and liveness detection. It provides a standardized control authority framework for intelligent agents in the iFay ecosystem to securely take over terminal software and hardware.

Glossary

• CAP (Control Authority Protocol): Control Authority Protocol, defining how terminal devices verify whether a Fay has been authorized to legitimately access terminal resources
• iFay: Independent Fay entity, an intelligent agent attached to a Natural_Person
• coFay: Collaborative Fay entity, a collaborative intelligent agent attached to an Official_Post
• Natural_Person: A natural person, the human individual to which an iFay is attached, and the ultimate source of authorization
• Official_Post: An official post, the organizational position to which a coFay is attached, and the ultimate source of authorization
• iFay_Runtime: iFay runtime environment, responsible for Fay instance lifecycle management, scheduling, and initiating control authority requests
• Authorization_Descriptor: Authorization descriptor file, an encrypted file stored locally on the terminal that describes the scope of resources, permission types, and validity period for which a Fay is authorized, serving as the core mechanism for offline authorization
• Trusted_Ticket: Trusted ticket, an online credential issued by a Ticket_Issuer in connected scenarios, serving as a supplementary mechanism to offline authorization
• Terminal_Resource: Terminal resource, hardware devices or client software on the terminal that can be accessed and operated
• Descriptor_Issuer: Authorization descriptor issuer, a trusted entity authorized by a Natural_Person or Official_Post to generate and issue Authorization_Descriptors
• Descriptor_Validator: Descriptor validator, a component on the terminal side responsible for verifying the legitimacy and validity of Authorization_Descriptors
• Registration_Authority: Registration authority, a trusted entity responsible for managing terminal hardware, software, and operating system registration and distributing Verification_Keys
• Verification_Key: Verification key, a key obtained by the terminal through registration, used to verify the digital signature of Authorization_Descriptors
• Protocol_Engine: Protocol engine, the system component that executes the core logic of the Control Authority Protocol
• Session: Control session, the complete lifecycle from authorization verification approval to access termination
• Handover_Policy: Control authority handover policy, defining the decision rules for control authority transfer between multiple Fays or between Fays and humans
• Resource_Access_Mode: Resource access mode, a mechanism for tiered management of resource access by operation type (read-write lock model)
• Liveness_Detection: Liveness detection, detecting whether a Fay session is still active through a combination of persistent connections and application-layer heartbeats
• Capability_Matrix: Capability matrix, a structured description of CAP protocol core capabilities in the blueprint
• Audit_Logger: Audit logger, a component responsible for recording all authorization verification and resource access operations