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Lightweight Feistel structure based hybrid-crypto model for multimedia data security over uncertain cloud environment

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Abstract

The exponential rise in software computing and internet technologies have broadened the horizon of cloud computing applications serving numerous purposes like business processes, healthcare, finance, socialization, etc. In the last few years the increase is security breaches and unauthorized data access has forced industry to achieve computationally efficient and robust security system. The increase in multimedia data communication over different cloud applications too demands an efficient security model, which is expected to have low computational complexity, negligible quality-compromise and higher security robustness. Major conventional security-systems like cryptography and steganography undergo high computational overhead, thus limiting their potential towards cloud-communication where each data input used to be of large size and a gigantic amount of multimedia data is shared across the network. To alleviate above stated problems and enable a potential solution, in this paper a highly robust Lightweight Feistel Structure based Substitution Permutation Crypto Model is developed for multimedia data security over uncertain cloud environment. Our proposed model applies substitution permutation crypto concept with Feistel structure which performs substitution-permutation over five rounds to achieve higher confusion and diffusion. To retain higher security with low computation, we applied merely 64-bit block cipher and equal key-size. MATLAB based simulation revealed that the proposed lightweight security model achieves better attack-resilience even maintaining low entropy, high-correlation, and satisfactory computation time for multimedia data encryption. Such robustness enables our proposed security model to be applied for real-world cloud data security.

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  1. Department of Computer Science, Periyar University, Salem, Tamil Nadu, India

    Denis Rayappan

  2. Department of Computer Science, Don Bosco College (Affiliated to Periyar University), Dharmapuri, Tamil Nadu, India

    Madhubala Pandiyan

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Rayappan, D., Pandiyan, M. Lightweight Feistel structure based hybrid-crypto model for multimedia data security over uncertain cloud environment. Wireless Netw 27, 981–999 (2021). https://doi.org/10.1007/s11276-020-02486-x

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