MS or Mphil

Permanent URI for this community

Now showing 1 - 1 of 1

A novel cipher design using an innovative chaotic map-based S-BOX
(UMT, Lahore, 2021) ANNAS WASIM MALIK
In the present-day world, secure communication of sensitive information between different entities is a major challenge. Hence, many cryptosystems have been developed for this purpose. Various operations are used in these cryptosystems. The most common operations used are substitution and permutation. The operation of substitution is performed by the substitution-box (S-box), which is a look-up table that takes m bits as input and replaces them with n bits. The construction of an S-box with strong cryptographic features is an essential part of building a robust and secure cryptosystem. Many researchers have developed complex techniques to construct S-boxes. In this research, a novel approach has been adopted to design a compound-chaotic map-based robust and dynamic S-box. The proposed methodology for constructing the S-box is simple and has good strength. The proposed S-Box is thoroughly examined and tested for cryptographic strength using a variety of standard criteria, including Non-Linearity (NL), Strict Avalanche Criterion (SAC), Bit Independence Criterion (BIC), Linear Probability (LP), and Differential Probability (DP). The results of the proposed S-box have been compared to those of others, demonstrating that it is cryptographically sound and worthy of inclusion in modern cryptosystems.