Entropy harvesting from physical sensors
Entropy harvesting from physical sensors
复制标题
从物理传感器收集熵
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
C. Lauradoux
中科院分区：
文献类型：
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作者：
Christine Hennebert;Hicham Hossayni;C. Lauradoux
寻找熵源是设计无头设备非确定性随机数发生器的一个重要问题。我们的目标是评估一组传感器（例如温度计，加速度计，磁力计）作为熵的潜在来源。在分析这些来源的一个挑战是最小熵的估计。我们遵循NIST的建议，从我们的实验活动中收集的数据集获得悲观估计。我们研究中最有趣的传感器是：加速度计，磁力计，振动传感器和内部时钟。与以前的结果相反，我们观察到的熵比以前预期的要小得多。其他传感器测量具有高惯性的现象，如温度或气压，提供非常小的熵。
Finding entropy sources is a major issue to design non-deterministic random generators for headless devices. Our goal is to evaluate a collection of sensors (e.g. thermometer, accelerometer, magnetometer) as potential sources of entropy. A challenge in the analysis of these sources is the estimation of min-entropy. We have followed the NIST recommendations to obtain pessimistic estimations from the dataset collected during our campaign of experiments. The most interesting sensors of our study are: the accelerometer, the magnetometer, the vibration sensor and the internal clock. Contrary to previous results, we observe far less entropy than it was expected before. Other sensors which measures phenomena with high inertia such as the temperature or air pressure provide very little entropy.