Dynamic Key Access Control for Electro-Mechanical Latches
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Solution Overview
Problem
Wireless access control systems using readers and electro-mechanical latches are vulnerable to interference and attacks, posing security concerns.
Innovation Solution
A system that dynamically generates electronic keys for smart devices to control electro-mechanical latches, using a combination of a server, smart devices, and a controller to validate and actuate the latches, with features like Bluetooth communication and audit trails to enhance security, and the option to retrofit existing systems with multi-user control and dynamic pin authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless access control systems use readers and electro-mechanical latches, then access control functionality is provided, but security vulnerabilities increase due to interference and attack risks
Solution Approach 1:
The patent implements dynamic key generation where access codes are not static but change over time. The system generates new keys periodically and invalidates previous ones, making the access control mechanism adaptive and resistant to interception attacks. This dynamic approach resolves the contradiction by maintaining ease of operation while improving security reliability.
Solution Approach 2:
The system changes the parameter of key validity by introducing time-based expiration and regeneration of access codes. Instead of using permanent static keys, the system continuously updates key parameters, making intercepted keys obsolete. This parameter change approach allows the system to maintain operational simplicity while eliminating the security vulnerability of static key systems.
2Reliability
If dynamic key generation is implemented, then security is enhanced, but system complexity increases
Solution Approach 1:
The patent introduces a communication module as an intermediary between the control unit and the execution mechanism. This intermediary handles the complex key generation and validation processes, allowing the main control logic to remain relatively simple. The communication module acts as a buffer that manages the complexity of dynamic key operations without burdening the core control system.
Solution Approach 2:
The system uses copies of access keys distributed to multiple users rather than requiring a complex centralized authentication system for each user. By generating and distributing copies of dynamic keys to authorized users, the system simplifies the overall architecture while maintaining high security. Each user receives a copy of the current key, and the system manages key distribution through relatively simple copying mechanisms.
Data Source
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AI summary
Methods and systems for controlling electro-mechanical (EM) latches. An EM latch may be controlled by receiving dynamic key information from a smart device and static access card information from an access card. A signal generator sends a signal to actuate the EM latch upon verification of the dynamic key information or static access card information. The smart device may be associated with a single user or with multiple users.