Abstract
Substitution permutation network (SP-network) is a chain of linked mathematical primitives used in block cipher algorithms. The proposed novel design of cryptographic SP-network consists of three cryptographic primitives: substitution box, permutation box, and random key sequences, including one key whitening operation. A new design is being proposed for each cryptographic primitive. The cryptographic strength of the proposed SP-network is evaluated by employing various standard tests; strict avalanche criterion, differential approximation probability, bit independent criterion, linear approximation probability, nonlinearity test, unified averaged changed intensity, histogram analysis, and coefficient correlation tests. The outcomes of the investigations validate that the designed cryptosystem is stable for secure communication and attains better cryptographic strength as compared with other state-of-the-art techniques.
Highlights
Today’s digital information age brings along many issues; among which information security and privacy is deemed to be the most important
Offer high degree of security, requiring low complexity We present a novel method for the construction of cryptographic SP-Network by synthesizing the high-dimensional chaotic gold sequences and logistic tent system
The proposed SP-Network consists of three cryptographic primitives and one key whitening operation for connected layers
Summary
Today’s digital information age brings along many issues; among which information security and privacy is deemed to be the most important. The feistel ciphers are different from the SP-Network block ciphers, in a way that they do not require invertible substitution and permutation layers. The most influential attacks for block cipher are linear and differential attacks These attacks can only be resisted, if designed S-box attains characteristics, such as low differential uniformity and high non-linearity [2], [4], [6]. Khan et al.: Novel Design of Cryptographic SP-Network Based on Gold Sequences and Chaotic LTS generation, based on chaotic system [10], [17]–[19], [22], Gaussian distribution [9] and machine learning [11], [23]. Offer high degree of security, requiring low complexity We present a novel method for the construction of cryptographic SP-Network by synthesizing the high-dimensional chaotic gold sequences and logistic tent system.
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