A New Image Encryption Algorithm Based on Two-dimensional Coupled Chaotic Map

Li Tu, Liyuan Jia, Chi Zhang, Saiqiu Guo

Abstract


In this paper, a kind of two-dimensional coupled chaotic transcendental map (TCCTM) was proposed. Firstly, by using the TCCTM chaotic sequences were generated,then the chaotic sequences were modified to generate chaotic key stream that is more suitable for image encryption. In the process of encryption, an original color image was decomposed into three images of red, green and blue components, and encrypted them in a different way respectively.  The experimental results demonstrate that the extremely sensitive to the key, the encrypted image has random-like distribution behavior of grey values, the adjacent pixels have zero co-correlation properties. Furthermore, the algorithm shows the advantages of large key space and high speed of encryption.

Keywords


Two-dimensional coupled chaotic transcendental equation; position scrambling; sensitivity;Image encryption

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DOI: http://doi.org/10.11591/ijeecs.v12.i12.pp8229-8237

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Indonesian Journal of Electrical Engineering and Computer Science (IJEECS)
p-ISSN: 2502-4752, e-ISSN: 2502-4760
This journal is published by the Institute of Advanced Engineering and Science (IAES) in collaboration with Intelektual Pustaka Media Utama (IPMU).

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