Abstract
We give the trace representation of a family of binary sequences derived from Euler quotients by determining the corresponding defining polynomials. The result extends an earlier result of Z. Chen on the trace of binary sequences derived from Fermat quotients modulo a prime. However, the case of composite modulus brings some interesting twists. Trace representation can help us producing the sequences efficiently and analyzing their cryptographic properties, such as linear complexity.
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In the sequel, we will use the Euler quotients \(Q_r(u)\) and related notations for \(1\le r\le {\mathfrak {r}}\) repeatedly.
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Acknowledgments
The authors wish to thank the anonymous referees and the editor for their patience in reading this manuscript and their helpful suggestions. Z. Chen was partially supported by the National Natural Science Foundation of China under Grant No. 61373140. X. Du was partially supported by the National Natural Science Foundation of China under Grants 61202395,61462077 and the Program for New Century Excellent Talents in University (NCET-12-0620).
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Chen, Z., Du, X. & Marzouk, R. Trace representation of pseudorandom binary sequences derived from Euler quotients. AAECC 26, 555–570 (2015). https://doi.org/10.1007/s00200-015-0265-4
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DOI: https://doi.org/10.1007/s00200-015-0265-4