Design And Application Of High Performance Physical Unclonable Function

With the advent of the Io T era,data security between Io T devices and the cloud has become critical.As a trusted hardware security platform,the security chip plays a major role in the fields of security precaution,smart home,intelligent transportation,car networking and smart meters.With the development of research on security chip,the reliability of security chip has been questioned.In addition to information security,counterfeit goods and counterfeit IC also constitute a threat to the security field.The physical unclonable function(PUF)generates digital ID with randomness,uniqueness and unclonability by extracting random process deviations in the chip manufacturing process or utilizing random motion of molecular markers in chemical solutions.PUF combined with security chip can improve security level;The combination of PUF and anti-counterfeit labels can constitute an authentication solution;PUF is used for chip anti-counterfeiting and identification,which will effectively prevent counterfeiting IC from entering the market.This paper conducts research from high-security PUF,ultra-high-density PUF and PUF applications.The research content mainly includes the following parts:1.Multi-mode hybrid reconfigurable PUF circuit design based on linear feedback: The arbiter PUF is susceptible to modeling attacks,leading to a problem that the security of the arbiter is reduced.Based on the study of memory PUF,linear feedback shift register(LFSR)and arbiter PUF,the multi-mode hybrid reconfigurable PUF concept is proposed,which can effectively improve the complexity of the excitation response of PUF.In this solution,the excitation signal controls the stored random source to generate random numbers,so that the LFSR feedback network can be randomly selected to generate a random sequence without hardware replacement,and continuous output of the key is achieved.The proposed PUF circuit is simulated and verified in TSMC 65 nm CMOS process.The PUF has high randomness and uniqueness.2.Ultra-high density PUF design based on Pb S quantum dots(QDs): Aiming at the shortcomings of circuit type PUF with low data density and poor security.In order to pursue an ultra-high-density PUF,it was found that the physical fingerprint pattern formed by the Brownian motion of the molecular marker in the solution has good anti-counterfeiting characteristics.It can also provide enough randomness and data space.The study found that Pb S quantum dots have the characteristics of excellent biocompatibility,strong stability and small size,which is suitable as a molecular marker.Therefore,the PUF was designed with using Pb S quantum dots as a molecular marker.The PUF obtains ultra-high data density,and the data have good randomness and uniqueness.3.Implementation of anti-loop attack chip based on PUF: In order to solve the increasingly serious counterfeit IC problem,the anti-loop attack chip based on PUF is proposed.The chip use PUF and aging detection sensor to detect forged or recycled IC respectively,which forms the ability of anti-loop attack.In this scheme,the static and dynamic voltage controlled oscillator(VCO)arrays are placed with interleaved bit mirroring(IBM)to eliminate the influence of aging on PUF.And addressing the problem of synchronous aging of the reference path and the pressure path of the aging detection sensor.This solution has been taped-out in TSMC 65 nm process.The results show that PUF has excellent robustness,and the ID of each chip is unique and unclonable,which fully meets the requirements of chip recognition.The aging sensor can accurately detect and identify the chip status.This scheme avoids the limitation of a single recognition mode and provides a new recognition mode for chip anti-counterfeiting field,which has broad application prospect.The paper improves the security of the PUF,explores new ways to implement PUF,and expands the application of PUF in the field of chip anti-counterfeiting.