Abstract
The advancements in the network and multimedia technologies have made information security more exigent and demanding. It brings new challenges to develop security methods that are credential enough to encrypt a number of images and generate a single encrypted image containing the information of all plain-images. Here, we propose a novel image encryption algorithm which has the efficacy of encrypting eight distinct plain-images simultaneously. Low frequency components of plain-images are selected and processed. The algorithm makes use of three chaotic systems to get visual effect of disorder, distorted and indistinguishable single encrypted image. The encryption/decryption processing operations such as chaos-based circular rotation and random mixing of pixels are carried out in wavelet domains. The one-dimensional chaotic maps are used to generate two chaotic key images needed for circular rotation. A two-dimensional chaotic map is employed for randomly shuffling the coefficients matrix received after mixing. The performance of proposed algorithm is analyzed through experimentation against pixels correlation, peak signal to noise ratio, key sensitivity and key space. It is found that the simulation results validate the effectiveness of the proposed octuple images encryption algorithm.
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Ahmad, M., Alam, B., Jain, A., Khare, V. (2013). A Novel Octuple Images Encryption Algorithm Using Chaos in Wavelet Domain. In: Chaki, N., Meghanathan, N., Nagamalai, D. (eds) Computer Networks & Communications (NetCom). Lecture Notes in Electrical Engineering, vol 131. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6154-8_50
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DOI: https://doi.org/10.1007/978-1-4614-6154-8_50
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