在停电时,温度对安全传感器的潜在攻击.
Maryam Esmaeilian1, Vincent Beroulle1, David Hély1
1LCIS, Grenoble INP, University Grenoble Alpes, 26000 Valence, France.
Sensors (Basel, Switzerland)
|April 28, 2025
概括
关机温度攻击 (POTA) 可以通过禁用探测器来损害嵌入式系统安全. 停电期间的加热周期会降低探测器的准确性,使系统容易受到进一步的攻击.
科学领域:
- 计算机工程 计算机工程
- 网络安全 网络安全
- 嵌入式系统 嵌入式系统
背景情况:
- 嵌入式系统容易受到故障注入攻击 (FIA) 的攻击,这些攻击会改变行为并危及安全.
- 安全检测器的完整性至关重要,因为攻击者可能会针对这些机制.
- 现有的探测器需要对新型攻击载体进行评估,例如断电温度攻击 (POTA).
研究的目的:
- 评估基于延迟的数字探测器对电源关闭温度攻击 (POTA) 的稳定性.
- 在各种功率状态下调查加热周期对基于FPGA的探测器特性的影响.
主要方法:
- 在Xilinx Artix-7 FPGAs上实现两个攻击探测器.
- 暴露FPGA在关机,开机和非活动 (时钟结) 模式下的加热周期.
- 检测器特性和准确度的分析加热后的循环.
主要成果:
- 在关机或非活动模式下的加热周期显著改变FPGA组件的延迟.
- 暴露于这些加热周期后,探测器的准确性会降低.
- 安全探测器的完整性和有效性受到POTA的损害.
结论:
- 基于延迟的数字探测器容易受到关机温度攻击.
- 嵌入式系统安全机制的完整性可能会在停电状态下受到环境压力的破坏.
- 对像POTA这样的新型FIA进行强度测试对于安全的嵌入式系统设计至关重要.
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