Browsing by Author "NOMAN AKHTAR"

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    Construction of Dynamic Substitution Box based on an Innovative Cubic Chaotic Map
    (UMT, Lahore, 2020) NOMAN AKHTAR
    Modern block cryptosystems are used to enhance the security of confidential data and message transmission channels. For this purpose, different substitution and permutation processes are executed. S-boxes are used to perform substitution operations in different block cryptosystems. The main objective of S-box is to create nonlinearity, distraction and resistant against various cryptanalysis. Many researchers have introduced complex algorithms to generate different S-boxes. In this research, an innovative method is proposed to generate dynamic and key dependent substitution boxes based on cubic chaotic map. The method of S-box is very modest and better in strength than other S-boxes. Statistical analyses are performed on standard properties such as; Differential Uniformity, Strict Avalanche Criterion, Nonlinearity, Linear Probability, and Bit Independence Criterion in order to measure the strength of proposed S-box. Comparative analysis of proposed outcomes with other S-boxes validates that designed S-box is worthwhile for use in modern encryption applications.