Substitution boxes are essential nonlinear components responsible to impart strong confusion and security in most of modern symmetric ciphers. Constructing efﬁcient S-boxes has been a prominent topic of interest for security experts. With an aim to construct cryptographically efﬁcient S-box, a novel scheme based on ﬁreﬂy (FA) optimization and chaotic map is proposed in this paper. The anticipated approach generates initial S-box using chaotic map. The meta-heuristic FA is applied to ﬁnd notable conﬁguration of S-box that satisﬁes the criterions by guided search for near-optimal features by minimizing ﬁtness function. The performance of proposed approach is assessed through well-established criterions such as bijectivity, nonlinearity, strict avalanche criteria, bit independence criteria, differential uniformity, and linear approxi- mation probability. The obtained experimental results are compared with some recently investigated S-boxes to demon- strate that the proposed scheme has better proﬁciency of constructing efﬁcient S-boxes. Keywords Substitution box Fireﬂy algorithm Discrete chaotic map Symmetric ciphers 1 Introduction block ciphers inherently relies on deployed S-boxes. The gap in performances of chaos-based and algebraic S-boxes In information security, the concept of chaos facilitates has been identiﬁed and none of the former displayed high cryptography through its high sensitiveness to initial con-
Neural Computing and Applications – Springer Journals
Published: May 28, 2018
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