A physically unclonable function (PUF) is a creditable and lightweight solution to the mistrust in billions of Internet of Things devices. Because of this remarkable importance, PUF need to be immune to multifarious attack means. Making the PUF concealable is considered an effective countermeasure but it is not feasible for existing PUF designs. The bottleneck is finding a reproducible randomness source that supports repeatable concealment and accurate recovery of the PUF data. In this work, we experimentally demonstrate a concealable PUF at the chip level with an integrated memristor array and peripherals. The correlated filamentary switching characteristic of the hafnium oxide (HfO x )-based memristor is used to achieve PUF concealment/recovery with SET/RESET operations efficiently. PUF recovery with a zero-bit error rate and remarkable attack resistance are achieved simultaneously with negligible circuit overhead. This concealable PUF provides a promising opportunity to build memristive hardware systems with effective security in the near future.

中文翻译：

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具有忆阻器阵列的可隐藏物理不可克隆功能芯片

物理不可克隆功能 (PUF) 是一种可靠且轻量级的解决方案，可解决对数十亿物联网设备的不信任问题。由于这一非凡的重要性，PUF 需要对多种攻击手段免疫。使 PUF 可隐藏被认为是一种有效的对策，但对于现有的 PUF 设计来说是不可行的。瓶颈是找到一个可重现的随机源，支持 PUF 数据的可重复隐藏和准确恢复。在这项工作中，我们通过集成忆阻器阵列和外围设备在芯片级通过实验演示了一种可隐藏的 PUF。氧化铪 (HfO) 的相关丝状开关特性 X ) 基于忆阻器用于通过 SET/RESET 操作有效地实现 PUF 隐藏/恢复。以可忽略的电路开销同时实现了具有零位错误率和显着抗攻击性的 PUF 恢复。这种可隐藏的 PUF 为在不久的将来构建具有有效安全性的忆阻硬件系统提供了有希望的机会。