| 基于电平转换器的物理不可克隆函数电路设计 |
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| 作者姓名： | 韩丽娟 钱蕾 姚恩义 娄鑫 曹元 刘宴华 |
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| 作者单位： | 1. 河海大学物联网工程学院，江苏 常州 213022;2. 华南理工大学微电子学院，广东 广州 511442;3. 人工智能与数字经济广东省实验室（广州），广东 广州 511442;4. 上海科技大学信息科学与技术学院，上海 201210;5. 上海空间电源研究所，上海 200245 |
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| 基金项目： | 江苏省自然科学基金(BK20191160);计算机架构国家重点实验室开放研究项目(CARCH201901);青蓝工程;常州市应用基础研究计划(CJ20200071;)常州市科技成果转化专项基金(2020029)。 |
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| 摘 要： | 提出一种基于通用交叉耦合电平转换器的低开销新型物理不可克隆函数的电路设计。该设计只需在传统电平转换电路中引入一个额外的开关晶体管，用来切换电平转换器的差分工作模式和共模工作模式，利用交叉耦合网络中两个 PMOS 晶体管由于开关速度不同所引起的输出电压的不确定性，通过共模模式输出获取所必需的熵值。该电路采用标准65 nm CMOS工艺进行设计，仿真结果显示该PUF的唯一性为49.11%，接近理想值。在电压为1.0～1.5V内，可靠性可达96.09%，而在环境温度为-20～100 ℃内，可靠性可达95.31%。同时在高速吞吐率为20Mbit/s时，每比特输出能耗仅为0.72 pJ（1.2 V，27 ℃）。
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| 关 键 词： | 物理不可克隆函数 工艺偏差 电平转换器 |
Novel level shifter based physical unclonable function circuit design |
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| Authors: | HAN Lijuan QIAN Lei YAO Enyi LOU Xin CAO Yuan LIU Yanhua |
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| Affiliation: | 1. College of Internet of Things Engineering, Hohai University, Changzhou 213022, China;2. School of Micro-Electronics, South China University of Technology, Guangzhou 511442, China;3. Guangdong Artificial Intelligence and Digital Economy Laboratory (Guangzhou), Guangzhou 511442, China;4. College of Information Science and Technology, Shanghai Tech University, Shanghai 201210, China;5. Shanghai Institute of Space Power-Sources, Shanghai 200245, China |
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| Abstract: | Level shifters are widely used in low-power,multi-threshold integrated circuit chips.A novel physical unclonable function(PUF)design based on cross-coupled level shifter was proposed.In this work,a single switching transistor was inserted in the level shifter,which was the only overhead per response bit to change the operation mode of the cross-coupled level shifter from differential to common.The signature of the PUF was extracted while in common mode,by exploiting the uncertainty of the output voltage due to the difference of the switching time of the two PMOS in the cross-coupled network.Simulated with a standard 65 nm CMOS process,the results show the proposed PUF can produce a uniqueness of 49.11% and a reliability of 96.09% with the power supply voltage ranged from 1.0 V to 1.5 V and 95.31% with the temperature ranged from-20℃ to 100℃.The energy per bit is only 0.72 pJ at a high throughput of 20 Mbit/s(1.2 V,27℃). |
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| Keywords: | physical unclonable function process variation level shifter |
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