Integrated Circuit Protection via Dual Electrical Pattern Monitoring
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Solution Overview
Problem
Existing protection mechanisms for integrated circuits against invasive attacks are energy-intensive and have limited efficiency, making them unsuitable for effective defense against modifications of electrical diagrams and electromagnetic attacks.
Innovation Solution
An integrated circuit with a protection device comprising a control circuit, receiver, and electrically conductive lines forming dual elementary electrical diagrams, where control stations detect modifications by comparing signal occurrences and switch states to block or allow signal propagation, triggering a response strategy to modify the functional block's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing protection mechanisms are used to detect invasive attacks, then security detection capability is provided, but energy consumption increases and efficiency is limited
Solution Approach 1:
The protection device is segmented into multiple control stations distributed along the conductive lines. Each control station independently monitors signal integrity in its local segment, eliminating the need for a centralized high-power detection system. This segmentation allows detection functionality to be distributed and optimized for low power consumption while maintaining comprehensive security coverage.
Solution Approach 2:
The control stations utilize the existing signal transmission infrastructure to detect attacks. By monitoring the presence and characteristics of signals already flowing through the conductive lines, the system performs self-diagnosis without requiring additional dedicated detection resources or external power-intensive equipment.
2Reliability
If existing protection mechanisms are used to detect invasive attacks, then security detection capability is provided, but efficiency is limited
Solution Approach 1:
Control stations are pre-configured with knowledge of expected signal characteristics and attack patterns. When a signal passes through a control station, the comparison between expected and actual signal properties occurs immediately, enabling rapid detection without requiring complex real-time analysis or additional processing steps.
Solution Approach 2:
The patent replaces complex electromagnetic detection systems with simpler electrical signal monitoring. By using the existing signal transmission medium itself as the detection carrier, the system achieves high detection efficiency without requiring separate sophisticated detection hardware or energy-intensive electromagnetic field analysis.
3Measurement precision
If control stations compare signal occurrences to detect modifications, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
Control stations create simplified copies or representations of signal characteristics rather than analyzing complete signal waveforms. By comparing key parameters such as signal presence, timing, and basic properties, the system achieves high detection accuracy while keeping the control station logic simple and manageable.
Data Source
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AI summary
The integrated circuit includes a functional block performing a logic and/or analog function. A control circuit is configured to transmit at least a first signal to the receiver and receive a second signal from receiver. The electrically conducting lines' first and second series connect the control circuit and receiver to perform the first and second signals' transit. A plurality of monitoring stations is simultaneously connected to first and second series of electrically conducting lines to define a first elementary electric pattern in the electrically conducting lines' first series and a distinct second elementary electric pattern equivalent to first elementary electric pattern in the electrically conducting lines' second series. A shield at least partially covers the functional block. The control circuit is configured to detect modification of first elementary electric pattern with respect to the second elementary electric pattern by absence of receipt of the second signal after a predefined time-out.