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Towards the Design of a Stronger AES: AES with Key Dependent Shift Rows (KDSR)

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Abstract

Cloud data storage is a service offered by cloud computing for storing the data. Though it has a lot of benefits, the security of the stored data is one of its major concerns. Many models have been developed to address this issue. These models encrypt the data and store them. Advanced encryption standard (AES) is one of the encryption methods that has been used prevalently. This paper presents a model that tries to further strengthen the AES algorithm. It alters the shift row of the AES by making it key dependent. The key dependency enhances the security of the algorithm and the results show that the statistical pattern of the plaintext is dispersed over the cipher text, thereby, defending the plaintext from the cryptanalysis. Experimental results indicate that the dispersion ratio of the plaintext over the cipher text increases from 0.75 for AES to approximately 1 for the proposed model. The model is also analyzed using the coefficient of variation metric. The proposed model also exhibits a significant level of avalanche effect.

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Authors and Affiliations

  1. Department of Computer Applications, B. S. Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai, 600 048, India

    S. Srisakthi

  2. Department of Computer Science and Engineering, College of Engineering, Anna University, Guindy Campus, Chennai, 600 025, India

    A. P. Shanthi

Authors
  1. S. Srisakthi
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  2. A. P. Shanthi
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Correspondence to S. Srisakthi.

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Srisakthi, S., Shanthi, A.P. Towards the Design of a Stronger AES: AES with Key Dependent Shift Rows (KDSR). Wireless Pers Commun 114, 3003–3015 (2020). https://doi.org/10.1007/s11277-020-07514-9

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  • DOI: https://doi.org/10.1007/s11277-020-07514-9

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