Tamper-Sensing Intrusion Module with AES Encryption
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Solution Overview
Problem
Intrusion detection systems for high-security facilities face vulnerabilities due to hardwired connections and potential tampering, which existing encryption methods may not adequately address.
Innovation Solution
An intrusion detection module with a tamper sensor and an encryption mechanism within the module to encrypt signals from sensors and tamper sensors, protecting communications between modules and control panels using AES 128-bit encryption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hardwired connections are used for communication between modules and control centers, then communication security is improved, but vulnerability to tampering increases
Solution Approach 1:
The system applies preliminary anti-action by implementing tamper-detecting sensors that proactively detect and respond to tampering attempts before they can compromise the system. The sensors monitor for physical interference, environmental changes, or unauthorized access, and trigger alarm signals to security personnel, preventing potential security breaches.
Solution Approach 2:
The patent introduces an intermediary encryption mechanism that mediates communication between modules and control centers. The encryption device encrypts data transmitted over hardwired connections, adding a layer of security that protects against interception or manipulation, thus resolving the contradiction between using hardwired connections and protecting against tampering.
2Reliability
If encryption is applied to communication signals, then security against interception is improved, but device complexity increases
Solution Approach 1:
The encryption mechanism is designed with multi-functionality, serving both as a security device and an integrated part of the intrusion detection system. By combining encryption functions with existing module functionalities, the patent minimizes additional complexity while achieving robust security against interception.
3Measurement precision
If tamper sensors are integrated within modules, then detection capability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent merges the tamper sensor functionality with the existing module structure, integrating sensors into the housing or mounting mechanisms. This combining approach allows for enhanced tamper detection capability while avoiding significant increases in manufacturing complexity, as the sensors utilize existing structural elements rather than requiring separate assembly components.
Data Source
AI summary
An intrusion detection module includes an enclosure and a sensor to detect a predetermined type of intrusion. The module further includes a tamper sensor to detect a tampering attempt. An encryption mechanism is coupled to receive signals from the sensor and tamper sensor and encrypt such signals for transmission to a control panel.