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A high reliability physically unclonable function based on multiple tunable ring oscillator
Microelectronics Journal ( IF 2.2 ) Pub Date : 2021-09-14 , DOI: 10.1016/j.mejo.2021.105263
Yuan Zhang 1 , Huaguo Liang 1 , Liang Yao 1 , Maoxiang Yi 1 , Zhengfeng Huang 1 , Yingchun Lu 1
Affiliation  

Physical unclonable functions (PUF) is a hardware security primitive which can generate unique chip identification and has a broad application prospect. However, because the reliability of PUF is easily affected by the complex external environment, the security of device authentication is threatened. In this paper, a multi tunable ring oscillator structure is designed, which can change the transmission path of the oscillation signal and the internal delay of each device at the same time. In this way, the delay complexity of entropy source structure can be maximized, and more authentication key data can be generated by using a small amount of hardware resources. On this basis, a prediction test screening system is proposed. Through the preselection system, the proposed PUF is tested at low temperature and high temperature for a short time. The threshold used to filter responses can be set more accurately to extract the high deviation response, which can greatly improve the reliability of PUF and make equipment certification more secure. The experimental results show that the designed PUF can achieve 49.52% uniformity and 49.17% uniqueness, which is very close to the ideal value. Moreover, it can maintain high reliability in a wide range of −40–100 °C and 0.8–1.2 V, indicating an encouraging effectiveness and reliability.



中文翻译:

一种基于多可调环形振荡器的高可靠性物理不可克隆函数

物理不可克隆函数(PUF)是一种硬件安全原语,可以生成唯一的芯片标识,具有广阔的应用前景。但是,由于PUF的可靠性容易受到复杂的外部环境的影响,设备认证的安全性受到威胁。本文设计了一种多可调环形振荡器结构,可以同时改变振荡信号的传输路径和各器件的内部延迟。这样可以最大化熵源结构的延迟复杂度,使用少量的硬件资源生成更多的认证密钥数据。在此基础上,提出了一种预测测试筛选系统。通过预选系统,建议的PUF在低温和高温下进行了短时间的测试。可以更准确地设置用于过滤响应的阈值,提取高偏差响应,可以大大提高PUF的可靠性,使设备认证更加安全。实验结果表明,设计的PUF可以达到49.52%的均匀度和49.17%的唯一性,非常接近理想值。此外,它可以在-40-100°C和0.8-1.2 V的宽范围内保持高可靠性,表明其有效性和可靠性令人鼓舞。

更新日期:2021-09-17
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