Low-Cost Time-Domain Reflectometry System for Tamper-Sensing Mesh Monitoring
By
luu
Sesame, salt, and substance. A flagship bake.
Summary
A new research paper accepted at CHES (Cryptographic Hardware and Embedded Systems) conference presents a low-cost method for monitoring tamper-sensing meshes using time-domain reflectometry. The system uses inexpensive components costing about €10 to achieve TDR measurements with resolution of a few hundred picoseconds. The paper will be published in TCHES 2026/1 in December and is currently available on eprint. The approach enables affordable tamper detection for security applications in embedded systems.
Key quotes
· 4 pulledThe topic of the paper is a way of monitoring a tamper-sensing mesh through time-domain reflectometry using very cheap components.
The end result is a circuit that costs about 10 € in parts that is able to measure TDR responses with a few hundred picoseconds of resolution.
I've got a new paper accepted at CHES, to be published in TCHES 2026/1 around beginning of December and out on eprint now.
In a real application, you would integrate both into your target circuit.
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