[Resource Topic] 2015/434: Dickson Polynomials that are Involutions

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Dickson Polynomials that are Involutions

Authors: Pascale Charpin, Sihem Mesnager, Sumanta Sarkar


Dickson polynomials which are permutations are interesting combinatorial objects and well studied. In this paper, we describe Dickson polynomials of the first kind in \mathbb{F}_2[x] that are involutions over finite fields of characteristic 2. Such description is obtained using modular arithmetic’s tools. We give results related to the cardinality and the number of fixed points (in the context of cryptographic application) of this corpus. We also present a class of Dickson involutions with high degree.

ePrint: https://eprint.iacr.org/2015/434

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