Electronically-controlled SFIC Lock Core Removal Security
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Solution Overview
Problem
Existing electronic SFIC locks lack secure mechanisms to differentiate between normal access keys and control keys, allowing unauthorized removal of cores, which compromises security and audit trails.
Innovation Solution
An electronically-controlled SFIC lock that allows keys to be programmed to operate as either normal user keys or control keys, with a motor and blocking actuator system to securely remove the core from the housing, capturing audit events for core removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mechanical blocking pin system is used to control core removal, then core removal can be achieved, but security is compromised because any programmed access key can be used with picking tools to remove the core
Solution Approach 1:
The patent replaces the mechanical blocking pin system with an electronically-controlled motor-driven blocking actuator. The motor is controlled by a microcontroller that receives authenticated commands from authorized control keys, substituting pure mechanical key-driven operation with an electronic control system that provides enhanced security while maintaining core removal functionality.
Solution Approach 2:
The patent introduces a microcontroller as an intermediary between the key and the blocking actuator. The microcontroller authenticates control keys and manages the motor-driven blocking actuator, creating a layered security system where the mechanical components are controlled through an electronic intermediary that verifies authorization before permitting core removal.
2Reliability
If electronic control is implemented to differentiate control keys from normal keys, then security is improved, but device complexity increases due to motor and microcontroller components
Solution Approach 1:
The patent integrates multiple functions into existing SFIC lock components. The microcontroller serves both normal access control and core removal authorization functions. The motor-driven blocking actuator integrates with the existing control sleeve mechanism, allowing a single electronic control system to manage both locking/unlocking and core removal operations without requiring entirely separate systems.
Solution Approach 2:
The patent combines the core removal actuation mechanism with the existing motor assembly used for normal locking operations. The same motor and microcontroller that control the primary locking function are also used to control the blocking actuator for core removal, merging multiple functions into a unified electronic control system rather than adding separate independent systems.
3Reliability
If audit tracking is implemented for core removal, then security monitoring is improved, but loss of time occurs due to additional authentication and logging steps
Solution Approach 1:
The patent performs authentication and audit trail preparation in advance by maintaining a ready-state microcontroller that continuously monitors for authorized control keys. When a control key is presented, the authentication and audit logging are immediately executed without requiring additional manual steps, as the system is pre-configured to capture these events automatically upon key presentation.
Solution Approach 2:
The microcontroller automatically performs authentication verification and audit trail generation without requiring external intervention. The system self-manages the security verification process and automatically logs core removal events with timestamp and key identification, eliminating the need for manual recording steps and reducing overall time loss.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances security by ensuring only authorized control keys can remove the core, maintaining accurate audit trails and preventing unauthorized access.
Implementation Method 1
a motor that controls access by controlling operation of the lock
Data Source
AI summary
An electronic small format interchangeable core (“SFIC”) lock is configured so that core locking features are electronically controlled, and keys can be electronically programmed to operate either as a normal user key able to open the lock or as a control key able to open the lock and to remove the SFIC cores. The same key will operate as a normal access key or as a control key, depending on how the key is programmed.