Publication: Resource-efficient memristor-based ring oscillator physically unclonable function for hardware security
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Date
2020-02
Authors
Chew Hui Qian
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Abstract
Passive elements such as resistor, capacitance, and inductor are commonly used in the electronic circuit design. Other than the first three passive elements, a fourth fundamental passive circuit element is called the memristor, which is the short for “memory resistor”. The memory-like properties, inconstant memristance, small size, and relative compatibility with CMOS fabrication in memristor become the main reason for utilizing the memristor in the design of Ring Oscillator Physically Unclonable Function (ROPUF). The memristor was inserted in the inverter, that build up the ring oscillator to produce a random or unpredictable oscillation frequency. This is due to the characteristic of inconstant memristance for the memristor. Furthermore, the usage of the memristor reduce the size of the circuit due to its nanoscale size. The circuit of the ROPUF design is using the 180 nm CMOS technology at 1.8 V. A resource-efficient memristor-based ROPUF has reduced size and power consumption compared to the previous ROPUF. The modification is made on the number of ring oscillators, k and the type of multiplexers used. For the size of the circuit, the total number of NMOS and PMOS is lesser compared to the previous ROPUF. For the power consumption, the total output current has reduced compared to the previous ROPUF. The performance of the ROPUF is based on the three performance metrics, which is uniqueness, uniformity, and bit-aliasing. With the modification made, the result on the three performance metrics are not fully maintained. However, the result is acceptable since the values are quite close to the ideal value of 50%, which is 46%, 52%, and 52% for uniqueness, uniformity, and bit-aliasing respectively. According to the result on the three performance metrics, the memristor-based ROPUF has the potential to be improved for the future and used as the hardware security.
Description
FYP 2 SEM 2 2019/2020
Keywords
Resource-efficient memristor-based ring oscillator physically unclonable function