An Inter-Component Pixels Permutation Based Color Image Encryption Using Hyper-chaos
This work addresses the need for practical and secure encryption methods to protect multimedia color images, representing an incremental improvement in image encryption techniques.
The paper tackles the problem of securing color images by proposing a hyper-chaos-based encryption algorithm that uses a 3D Arnold transform and 2D hyper-chaotic map for shuffling and confusion, resulting in high security and robustness against cryptographic attacks as demonstrated in simulations.
In this paper, a simple and robust color image encryption algorithm based on high-dimensional chaotic maps is proposed. The algorithm employs a 3D Arnold transform to perform inter-component shuffling of plain-image, while a 2D hyper-chaotic map is used to confuse the relationship between the encrypted image and plain-image. The control parameters of Arnold transform are extracted from pending plain-image, thereby establishing a dependency to the plain-image. The confusion process is carried out in cipher-block chaining mode to make it dependent to the encrypted image. This makes the algorithm able to resist the cryptographic attacks. The performance of the proposed algorithm is analyzed through computer simulations. The experimental analyses show that the proposed algorithm has desirable properties of high security, robustness to cryptographic attacks and practicability to protect multimedia color images.