Strong physically unclonable function (PUF) circuit based on memristor

Abstract

The invention belongs to the technical field of information security, in particular to a strong physically unclonable function (PUF) circuit based on a memristor. The PUF circuit comprises a non-volatile storage array, a 2T2R basic unit, a row address generation module, a column address generation module, a comparison address generation module, a PUF column selector, a PUF row decoder, a comparison current column selection module, a reading and resetting module, a comparison and resetting module, a reading circuit module, a Mbit register and counter module and a multiple XOR module, wherein the address generation module is used for generating a row selection signal and a column selection signal; the PUF column selector is used for address decoding; the reading and resetting module is usedfor generating reading, writing and comparison signals; the reading circuit module is applied to a readout circuit; the Mbit register and counter module is used for temporary storage of results; and the multiple XOR module is used for enhancing anti-modeling attacks. The invention also provides a set of operation flow to improve the area utilization ratio and randomness of the strong PUF of the memristor. The memristor strong PUF circuit disclosed by the invention has the characteristics of high area utilization ratio, configurability, reusability, excellent randomness and anti-modeling attackability.

Description

technical field [0001] The invention belongs to the technical field of information security, and in particular relates to a memristor-based strong physically unclonable function (Physically Unclonable Function, PUF) circuit. Background technique [0002] With the rapid development of electronic technology and the rise of Internet of Things technology, people's lives are increasingly inseparable from electronic products, but they also have to face an increasingly serious problem, that is, hardware security certification and confidentiality issues, especially In the private and military spheres. Compared with traditional password authentication methods, Physically Unclonable Function (PUF) does not need to save passwords, but forms stimulus-response pairs (Challenge and Response) through physical characteristics such as fluctuations and differences in the manufacturing process of circuit devices. Pairs, CRPs), each input is a stimulus (Challenge) and then outputs a response (...

AI Technical Summary

Problems solved by technology

However, the problem faced by this scheme is that it needs more than twice the set and reset voltage of the memristor, which cannot meet the characteristics of low power consumption of the memristor; moreover, this scheme belongs to random numbers and weak PUF, which cannot form a large number of CRPs and cannot be realized. Strong PUF

If the number of columns is 2n in total, this scheme can generate 2 to the nth power pair CRP, but the disadvantage of this scheme is: when all columns are selected and single column is selected, the comparison current column selection size changes greatly, and all columns are selected , the power consumption is large; at the same time, the area of ​​the solution is too large but it cannot effectively improve the solution space, requiring double the area. For the application fields that require large-capacity CRPs, the area will be unacceptable

At the same time, the scheme does not propose any scheme to improve its resistance to modeling attacks. Under the attacks of algorithms such as deep neural network and integrated learning, the security is insufficient.

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