International Association for Cryptologic Research

International Association
for Cryptologic Research

IACR News item: 06 May 2015

Pascale Charpin, Sihem Mesnager, Sumanta Sarkar
ePrint Report ePrint Report
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.

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