Parallel stream cipher for secure high-speed communications

Authors:
Hoonjae Lee;Sangjae Moon
Affiliations:
Department of Computer Engineering, Kyungwoon University, Induk-ri 55, Sandong-Myun, Kumi, Kyungbuk 730-850, South Korea;School of Electronic and Electrical Engineering, Kyungpook National University, 1370, Sankyuk-Dong, Taegu 702-701, South Korea
Venue:
Signal Processing
Year:
2002

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Abstract

Due to ongoing improvements in high-speed communications, the speed of data encryption must also increase. Accordingly, this paper proposes an PS-LFSR with an m(≥ 2)-times faster shifting during one clock interval and a parallel stream cipher that is faster by paralleling many similar keystream generators using the PS-LFSRs. Finally, an m-parallel SUM-BSG with 8-parallel for detail is proposed as a design example of the proposed parallel stream cipher. When compared with a conventional stream cipher, the properties of the proposed cipher exhibited the same crypto-degree with m-times faster processing.