A novel image encryption technique using hybrid method of discrete dynamical chaotic maps and Brownian motion

Abstract

Information security is an important and critical subject of the current digital era. Nowadays, almost all information is digital in nature and security from hackers and eavesdroppers has become vital in civil (big giant corporations) as well as in defense organizations. One type of information in bit streams is in the form of digital images. In this article, an idea to combine Brownian motion with ternary unique orientation has been implemented which is related to random motion over time and spatial coordinates. Moreover, chaotic dynamical map has been used to add one more security level to the proposed encryption scheme. The proposed scheme is evaluated on different statistical tests and these results are compared with already existing benchmarks. The results show that the proposed algorithm has better security performances as compared to existing image enciphering schemes.

A Lightweight Chaos-Based Medical Image Encryption Scheme Using Random Shuffling and XOR Operations

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An Image Encryption Algorithm Based on Bisection Method and One-Dimensional Piecewise Chaotic Map

“…[19] used a block cipher in an adequate mode of operation and the Rijndael architecture employing chaotic maps to propose a new image encryption scheme. In [20], the authors combine Brownian motion with ternary unique orientation with chaotic dynamical map to design a new cryptographical algorithm. A novel image encryption algorithm using chaotic maps and genetic operations was presented in [21].…”

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“…However, some existing chaotic-based encryption algorithms have some shortcomings. Such as, the key design is simple [19,20], cannot resist some plaintext attacks [21][22][23] and requires a large number of pseudorandom numbers [9,23,26]. These methods may lead to inefficient encryption processes and lower security levels.…”