Ultra-energy-efficient temperature-stable physical unclonable function in 65 nm CMOS
Ultra-energy-efficient temperature-stable physical unclonable function in 65 nm CMOS
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DOI：
10.1049/el.2016.0292
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发表时间：
2016-05
影响因子：
1.1
通讯作者：
S. Tao;E. Dubrova
中科院分区：
文献类型：
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作者：
S. Tao;E. Dubrova
物理不可克隆函数（PUF）是一种很有前途的硬件安全原语，适用于需要轻量级加密方法的资源受限设备。这封信提出了一个超低功耗和可靠的PUF的基础上，定制的动态两级比较器在亚阈值区域工作。所提出的PUF在标准的65 nm CMOS工艺中实现，并通过蒙特-卡罗模拟进行验证。评估结果显示，在0°C至85°C的商用温度范围内，最坏情况下的可靠性为98.3%，电源电压波动为10%。此外，128位PUF阵列在1 Mb/s时仅消耗1.33 μW，相当于10.3 fJ/bit，是迄今为止最节能的设计。
Physical unclonable functions (PUFs) are promising hardware security primitives suitable for resource-constrained devices requiring lightweight cryptographic methods. This Letter proposes an ultra-low-power and reliable PUF based on a customised dynamic two-stage comparator operating in the sub-threshold region. The proposed PUF is implemented in a standard 65 nm CMOS technology and validated through Monte-Carlo simulations. Evaluation results show a worst-case reliability of 98.3% over the commercial temperature range of 0°C to 85°C and 10% fluctuations in supply voltage. In addition, the 128-bit PUF array consumes only 1.33 μW at 1 Mb/s, which corresponds to 10.3 fJ/bit, being the most energy-efficient design to date.