基于ZnO忆阻器的高鲁棒性毛刺型物理不可克隆函数设计

Design of Highly Robust Glitch-Physical Uunclonable Functions Based on ZnO Memristor

物理不可克隆函数(PUF)作为硬件安全原语,广泛应用于众多领域。针对传统硅基类PUF电路可靠性差和易受建模攻击等问题,该文提出一种基于忆阻器的“毛刺”型物理不可克隆函数电路(Glitch-PUF)。该方案首先利用忆阻器的非易失性和阻变效应,实现二值逻辑完备集;然后,利用完备集和竞争冒险现象设计忆阻毛刺产生模块,通过选通信号控制流经忆阻交叉阵列路径的延时大小,改变“毛刺”宽度获得稳定“毛刺”输出;最后,利用忆阻器的存算一体特性和施密特回滞效应设计忆阻采样模块,并测试Glitch-PUF性能。实验结果表明,所设计的Glitch-PUF电路相比文献,抗攻击性提高4.9%~14.3%,随机性达到98.2%,误码率(BER)为0.08%,具有优异的鲁棒性和稳定性。

Physical Unclonable Functions(PUF)are widely used in various fields as hardware security primitives.Considering the problems of vulnerability to modeling attacks and low stability of traditional CMOS-based PUF,a memristive Glitch-PUF circuit is proposed in this paper.The non-volatility and resistive effect of memristor are used to achieve the complete set of binary logic circuit.Then,the glitch generation circuit is designed based on the logic complete sets and competition and risk taking phenomenon,the stable glitch is obtained by varying the delay time,which is controlled by the path of the current flowing through crossbar array.Finally,the sampling circuit is designed according to the computing in memory characteristics of the memristor and Schmidt hysteresis effect,and the Glitch-PUF is verified.The experimental results show that the anti-modeling attack of designed Glitch-PUF is improved about 4.9%~14.3%,the randomness reaches 98.2%,and the Bit Error Rate(BER)is 0.08%,showing excellent robustness and stability.