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On the Nonlinearity and Affine Equivalence Classes of C-F Functions

Lei SUN, Fangwei FU, Xuang GUANG

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Summary :

Since 2008, three different classes of Boolean functions with optimal algebraic immunity have been proposed by Carlet and Feng [2], Wang et al.[8] and Chen et al.[3]. We call them C-F functions, W-P-K-X functions and C-T-Q functions for short. In this paper, we propose three affine equivalent classes of Boolean functions containing C-F functions, W-P-K-X functions and C-T-Q functions as a subclass, respectively. Based on the affine equivalence relation, we construct more classes of Boolean functions with optimal algebraic immunity. Moreover, we deduce a new lower bound on the nonlinearity of C-F functions, which is better than all the known ones.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E99-A No.6 pp.1251-1254
Publication Date
2016/06/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E99.A.1251
Type of Manuscript
LETTER
Category
Cryptography and Information Security

Authors

Lei SUN
  Nankai University
Fangwei FU
  Nankai University
Xuang GUANG
  Nankai University

Keyword