Design and Implementation of Linear Feedback shift Register based physical unclonable function

Abstract: In the physical real world, there is a critical problem due to the threats in network security. As a result, there is an infringement of integrated intellectual data. Hence there is a strong necessity to eliminate this discrepancy in Integrated Security Systems (ISS). An LFSR is a commonly used circuit to generate pseudo random sequences. An LFSR is a shift register whose input bit is a linear function of the previous state. A physical unclonable function (PUF) is a physical entity that is embodied in a physical structure and is easy to authenticate but hard to predict. The output bits of a pulse generator are presented in parallel as a challenge input to an Arbiter PUF. PUFs depend on the uniqueness of their physical microstructure. This microstructure depends on random physical factors introduced during manufacturing. These factors are unpredictable and uncontrollable which makes it virtually impossible to duplicate or clone the structure. Therefore this project mainly focuses on providing security by randomly generating different sequences by the implementation of LFSR based PUF which can be decoded only by having master or true authentication of the system.

Keywords: Physical Unclonable Function, True Random Number Generator, Network Security, FPGA, Linear Feedback Shift Register, Information Security, Randomness.