Volume 25, Issue 1, June 2016, Pages 299–307
S. Hanis1 and R. Amutha2
1 ECE, SSN College of Engineering, Chennai, India
2 Department of Electronics and Communication Engineering, SSN College of Engineering, Chennai, Tamil Nadu, India
Original language: English
Copyright © 2016 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This paper presents a novel image encryption scheme based on cellular automata (CA) and chaotic logistic mapping. The logistic chaotic mapping is used for shuffling the pixels which results in permutation. This permuted image is converted into a binary stream image where each rows of the image are converted into binary streams. Then a hybrid cellular automata (HCA) is used to provide diffusion by local interaction of the adjacent bits by applying various CA rules in the permuted image and confusion is brought by the cellular automata rules and keys from pseudo random number generator. In this scheme both reversible and irreversible cellular automata are used where irreversible cellular automata are used as a Pseudo Random Number Generator (PRNG) and reversible CA is used for diffusion. The properties of the encrypted image such as entropy, correlation coefficients, histogram, key space and key sensitivity prove that the encryption scheme is highly robust against attacks and also reliable in transmission loss scenarios.
Author Keywords: Diffusion, Encryption, Decryption, Logistic Mapping, Cellular Automata.
S. Hanis1 and R. Amutha2
1 ECE, SSN College of Engineering, Chennai, India
2 Department of Electronics and Communication Engineering, SSN College of Engineering, Chennai, Tamil Nadu, India
Original language: English
Copyright © 2016 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This paper presents a novel image encryption scheme based on cellular automata (CA) and chaotic logistic mapping. The logistic chaotic mapping is used for shuffling the pixels which results in permutation. This permuted image is converted into a binary stream image where each rows of the image are converted into binary streams. Then a hybrid cellular automata (HCA) is used to provide diffusion by local interaction of the adjacent bits by applying various CA rules in the permuted image and confusion is brought by the cellular automata rules and keys from pseudo random number generator. In this scheme both reversible and irreversible cellular automata are used where irreversible cellular automata are used as a Pseudo Random Number Generator (PRNG) and reversible CA is used for diffusion. The properties of the encrypted image such as entropy, correlation coefficients, histogram, key space and key sensitivity prove that the encryption scheme is highly robust against attacks and also reliable in transmission loss scenarios.
Author Keywords: Diffusion, Encryption, Decryption, Logistic Mapping, Cellular Automata.
How to Cite this Article
S. Hanis and R. Amutha, “A Novel Image Encryption Scheme Using Chaos and Hybrid Cellular Automata,” International Journal of Innovation and Scientific Research, vol. 25, no. 1, pp. 299–307, June 2016.
