Word Oriented Cascade Jump σ-LFSR

Authors:
Guang Zeng;Yang Yang;Wenbao Han;Shuqin Fan
Affiliations:
Department of Applied Mathematics, Zhengzhou Information Science and Technology Institute, Zhengzhou, China 450002;Department of Applied Mathematics, Zhengzhou Information Science and Technology Institute, Zhengzhou, China 450002;Department of Applied Mathematics, Zhengzhou Information Science and Technology Institute, Zhengzhou, China 450002;Department of Applied Mathematics, Zhengzhou Information Science and Technology Institute, Zhengzhou, China 450002
Venue:
AAECC-18 '09 Proceedings of the 18th International Symposium on Applied Algebra, Algebraic Algorithms and Error-Correcting Codes
Year:
2009

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Abstract

Bit oriented cascade jump registers were recently proposed as building blocks for stream cipher. They are hardware oriented designed hence inefficient in software. In this paper word oriented cascade jump registers are presented based on the design idea of bit oriented cascade jump registers. Their constructions make use of special word oriented σ -LFSRs, which can be efficiently implemented on modern CPU and only require few memory. Experimental results show that one type of efficient word oriented cascade jump σ -LFSRs can be used as building blocks for software oriented stream cipher.