Twin-storage type multi-valued physically unclonable function circuit

Abstract

The invention discloses a twin-storage type multi-valued physically unclonable functional circuit which comprises a time sequence control circuit, a decoder, a driver, a pre-charge circuit, a PUF (physically unclonable function) array, 16 data loading circuits and 16 interface circuits. The driver comprises 32 driving circuits with identical structures, and 512 PUF circuits are arranged accordingto a 32 row*16 column mode to form the PUF array. The twin-storage type multi-valued physically unclonable functional circuit has the advantages that 2-bit random source data can be generated by the PUF circuits which are of twin structures, four-valued data can be outputted by multi-valued logic circuits formed by the data loading circuits and the interface circuits, and accordingly the quantities of bit lines can be reduced by 50%; the twin-storage type multi-valued physically unclonable functional circuit is designed in full-custom modes by the aid of TSMC_LP65nm processes, and the area ofthe twin-storage type multi-valued physically unclonable functional circuit is 0.019 mm<2>; as shown by test results, the lowermost work voltages of the twin-storage type multi-valued physically unclonable functional circuit are 320 mV, corresponding work frequencies are 110 kHz, the hardware utilization rate is increased by 15% at least, and energy consumption is reduced by 30%.

Description

technical field [0001] The invention relates to a multi-valued physical non-clonable function circuit, in particular to a twin storage type multi-valued physical non-clonable function circuit. Background technique [0002] With the development of integrated circuit technology and information security technology, the application fields of security chips have been fully promoted and applied in the daily life of society from the traditional political, economic, military and diplomatic departments, such as identity authentication, financial charges, car anti-theft , logistics tracking, anti-counterfeiting identification and so on. However, with the development of attack technologies, security chips are increasingly threatened. These threats can be roughly divided into software attacks, physical attacks, software and physical combined attacks, and physical attacks include intrusive attacks and non-intrusive attacks. Intrusive attacks, also known as brute force attacks, include ...

AI Technical Summary

Problems solved by technology

In terms of the implementation technology of physical unclonable function circuits, Daihyun Lim et al. used the delay deviation of interconnect lines and transistors to realize Arbiter-physical unclonable function circuits; Xiang et al. aimed at the oscillation of traditional oscillator-based physical unclonable function circuits during the response process The oscillation frequency of the device is fixed, and there is a hidden danger of being attacked. A physical unclonable function circuit structure with multiple frequency bands is proposed.

However, the above-mentioned physical unclonable function circuits are all realized by binary circuits, the generated key data is relatively limited, the hardware utilization rate is low, and the energy consumption is high

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