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CASca:A CA Based Scalable Stream Cipher

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Part of the book series: Springer Proceedings in Mathematics & Statistics ((PROMS,volume 139))

Abstract

This paper presents a scalable stream cipher based on Cellular Automata. The cipher uses linear and nonlinear cellular automata as crypto primitives. The properties of maximum length nonlinear cellular automata have been exploited to design the cipher. Rotational symmetric bent function is used in the final combiner of the cipher which is proven to be secured against certain kind of fault attacks. The scalability provides different security level for different applications. Finally the cipher is shown to be very hardware efficient.

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Notes

  1. 1.

    The nonlinearity of a bent function is the highest possible value among all Boolean functions of the same number of variables.

References

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Correspondence to Shamit Ghosh .

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Ghosh, S., Chowdhury, D.R. (2015). CASca:A CA Based Scalable Stream Cipher. In: Mohapatra, R., Chowdhury, D., Giri, D. (eds) Mathematics and Computing. Springer Proceedings in Mathematics & Statistics, vol 139. Springer, New Delhi. https://doi.org/10.1007/978-81-322-2452-5_7

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