Image Encryption Method Using Dependable Multiple Chaotic Logistic Functions

Ranu Gupta, Rahul Pachauri and Ashutosh K. Singh
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Ranu Gupta: Jaypee University of Engineering and Technology, Guna, India
Rahul Pachauri: Jaypee University of Engineering and Technology, Guna, India
Ashutosh K. Singh: Thapar Institute of Engineering and Technology University, Punjab, India

International Journal of Information Security and Privacy (IJISP), 2019, vol. 13, issue 4, 53-67

Abstract: This article explores an efficient way of image encryption using chaotic logistic function. A set of two chaotic logistic functions and a 256 bit long external secret key are employed to enhance the security in the encrypted images. The initial condition of first logistic function has been obtained by providing the suitable weights to all bits of the secret key. The initial condition of second logistic function has been derived from first chaotic logistic function. In this proposed algorithm, ten different operations are used to encrypt the pixel of an image. The outcome of the second logistic map decides the operation to be used in the encryption of the particular image pixel. Various statistical parameter comparisons show that the proposed algorithm provides an image encryption method with better security and efficiency for all real-time applications.

Date: 2019
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