Interleaved Diffusion Regions for Photonic Emission Masking
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Solution Overview
Problem
Electronic devices and systems, such as IC chips, are vulnerable to photonic emission attacks due to the leakage of confidential information through photon emissions during signal transmission, which can be exploited to reconstruct encrypted data.
Innovation Solution
The implementation of a driver circuit with strategically arranged diffusion regions, featuring symmetric and interleaved layouts, which maintains constant photonic emission profiles regardless of signal activity, making it difficult for attackers to analyze and reconstruct the transmitted information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional driver circuits are used for signal transmission, then signal transmission function is achieved, but photonic emission leaks confidential information that can be reconstructed by attackers
Solution Approach 1:
The patent merges multiple diffusion regions (first, second, and third diffusion regions) into a single driver circuit structure. By interleaving these diffusion regions and connecting them through shared connections, the circuit combines their photonic emission characteristics to produce an averaged emission profile that masks individual signal variations, thereby preventing information leakage while maintaining signal transmission functionality.
Solution Approach 2:
The patent applies local quality by creating asymmetric connections among diffusion regions - the first diffusion region connects to both second and third diffusion regions, while the second and third diffusion regions only connect to the first. This asymmetric local configuration ensures that each diffusion region contributes differently to the overall photonic emission, creating a complex averaged profile that is difficult to analyze for information extraction.
2Reliability
If diffusion regions are arranged in symmetric and interleaved layouts, then photonic emission profiles become constant and resistant to attacks, but circuit complexity increases
Solution Approach 1:
The patent segments the driver circuit into multiple distinct diffusion regions (first, second, and third diffusion regions) with different connection configurations. This segmentation allows each region to contribute independently to the overall photonic emission, and when combined, they produce an averaged profile that resists analysis. The segmentation strategy achieves security enhancement without requiring completely redesign of the entire circuit architecture.
Data Source
AI summary
Some embodiments include apparatuses having diffusion regions located adjacent each other in a substrate, and connections coupled to the diffusion regions. The diffusion regions include first diffusion regions, second diffusion regions, and third diffusion regions. One of the second diffusion regions and one of the third diffusion regions are between two of the first diffusion regions. One of the first diffusion regions and one of the third diffusion regions are between two of the second diffusion regions. The connections include a first connection coupled to each of the first diffusion regions, a second connection coupled to each of the second diffusion regions, and a third connection coupled to each of the third diffusion regions.