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Phase Calibrated Ring Oscillator PUF Design and Application

机译:相位校准环形振荡器PUF的设计与应用

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A Ring Oscillator Physical Unclonable Function (RO PUF) is an application-constrained hardware security primitive that can be used for authentication and key generation. PUFs depend on variability during the fabrication process to produce random outputs that are nevertheless stable across multiple measurements. Though industry has a growing need for PUF implementations on Field Programmable Gate Arrays (FPGA) and Application-Specific Integrated Circuits (ASIC), the bit errors in PUF responses become a bottleneck and limit the usage. In this work, we comprehensively evaluate the RO PUF’s stability on FPGAs, and we propose a phase calibration process to improve the stability of RO PUFs. We also make full use of the instability of PUFs to provide a novel solution for authentication. The results show that the bit errors in our PUFs are reduced to less than 1%.
机译:环形振荡器物理不可克隆功能(RO PUF)是受应用程序限制的硬件安全性原语,可用于身份验证和密钥生成。 PUF依赖于制造过程中的可变性来产生随机输出,但这些随机输出在多次测量中仍然稳定。尽管业界越来越需要在现场可编程门阵列(FPGA)和专用集成电路(ASIC)上实现PUF,但PUF响应中的位错误成为瓶颈,并限制了其使用。在这项工作中,我们全面评估了RO PUF在FPGA上的稳定性,并提出了相位校准过程来提高RO PUF的稳定性。我们还充分利用了PUF的不稳定性,为身份验证提供了一种新颖的解决方案。结果表明,我们的PUF中的误码率降低到了不到1%。

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