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Recently, the Rijndael algorithm has been uniform by the National Institute of Standards and Technology (NIST) as the Advanced Encryption Standard (AES). This makes AES a vital and necessary data-protection mechanism for federal agencies in the US and other countries. In AES, rotation occurs in key expansion, ciphering, and deciphering. Rotation is vital for confusion and diffusion, which play an important role in any cryptography technique. Confusion and diffusion make breaking the key complex and difficult. This paper studies the effect of reconfiguring the structure of AES, especially replacing constant rotation with variable rotation. The resulting producing another cipher is called Dynamic Rotation for Advanced Encryption Standard (DRAES). DRAES with variable rotation raises the complexity of the algorithm, and thus, increases the time consumed for brute-force attacks. We measured the diffusion of AES and DRAES algorithms. DRAES reached acceptable level of diffusion faster than AES.
Dr. Mohamed Abd Elhamid Ibrahim. 2015. "Robust Performance and Resistance to Attack for the Advanced Encryption Standard using Dynamic Rotation". Global Journal of Computer Science and Technology - E: Network, Web & Security GJCST-E Volume 15 (GJCST Volume 15 Issue E6).
Crossref Journal DOI 10.17406/gjcst
Print ISSN 0975-4350
e-ISSN 0975-4172
v1.2
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Total Score: 146
Country: Egypt
Subject: Global Journal of Computer Science and Technology
Authors: Dr. Mohamed Abd Elhamid Ibrahim. Moustafa Mousa El Bahtity (PhD/Dr. count: 1)
View Count (all-time): 469
Total Views (Real + Logic): 3037
Total Downloads (simulated): 184
Publish Date: 2015 03, Sun
Monthly Totals (Real + Logic):
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