Open Access

ARTICLE

Design of Feedback Shift Register of Against Power Analysis Attack

Yongbin Zhao^1,*, XuYang¹, RanranLi¹

1 School of Information Science and Technology, Shijiazhuang Tiedao University, Shijiazhuang, China.

* Corresponding Author: Yongbin Zhao. Email: .

Computers, Materials & Continua 2019, 58(2), 517-527. https://doi.org/10.32604/cmc.2019.03680

Abstract

Stream ciphers based on linear feedback shift register (LFSR) are suitable for constrained environments, such as satellite communications, radio frequency identification devices tag, sensor networks and Internet of Things, due to its simple hardware structures, high speed encryption and lower power consumption. LFSR, as a cryptographic primitive, has been used to generate a maximum period sequence. Because the switching of the status bits is regular, the power consumption of the LFSR is correlated in a linear way. As a result, the power consumption characteristics of stream cipher based on LFSR are vulnerable to leaking initialization vectors under the power attacks. In this paper, a new design of LFSR against power attacks is proposed. The power consumption characteristics of LFSR can be masked by using an additional LFSR and confused by adding a new filter Boolean function and a flip-flop. The design method has been implemented easily by circuits in this new design in comparison with the others.

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Citations