一种PCB篡改电路的检测和定位方法
By performing rasterization processing and feature matrix analysis on PCB samples, tampered circuits can be identified and located, solving the problem of insufficient effectiveness and reliability of PCB tampering detection in existing technologies, and achieving high-precision detection and location of tampered circuits.
CN121656692BActive Publication Date: 2026-07-17UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIV OF ELECTRONICS SCI & TECH OF CHINA
- Filing Date
- 2025-11-28
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing technologies for PCB tamper detection lack effectiveness and reliability, making it difficult to effectively identify and locate tampered circuits.
Method used
By rasterizing the PCB samples, the thermal conductivity and temperature of each grid are obtained, a grid feature matrix is constructed, local density and distance are defined, a center point is selected, a candidate grid associated with the tampered PCB sample sequence is constructed, a detection window is set, and grids are merged or added to locate the tampered circuit.
Benefits of technology
It enables precise detection and location of PCB tampered circuits, improves the security of hardware circuit systems, and ensures the accuracy of identifying the location of tampered circuits.
✦ Generated by Eureka AI based on patent content.
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Abstract
本发明公开了一种PCB篡改电路的检测和定位方法，属于硬件安全技术领域，包括如下步骤：得到若干栅格化PCB样本；构建网格特征矩阵；定义栅格化PCB样本的局部密度和距离，并选取各网格位置对应的中心点，且将除中心点外的栅格化PCB样本分配到最近的中心点，得到网格的分组结果；将中心点数量为2的网格作为候选网格；根据类间距离从大到小的顺序对各候选网格进行排序，并确定各候选网格处对应的篡改PCB样本，且构建候选网格关联篡改PCB样本序列集合；基于各候选网格构建检测窗口，将检测窗口内的网格合并或添加到篡改电路对象中，计算得到篡改电路的位置。本发明解决了PCB篡改检测的有效性和可靠性不足的问题。
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