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Alternative Polynomials for Rijndael: Diffusion Analysis
Linnaeus University, Faculty of Technology, Department of Computer Science.
2014 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The Rijndael cryptosystem uses a particular polynomial to create its constants. All calculations within the encryption and decryption layers are based on this polynomial. This arouse the curiosity to see what happens if the polynomial is substituted by other polynomials. This paper’s main area of study is to investigate the consequences of using different polynomials to construct the Rijndael cryptosystem. To do so, as a phase of this study, a Mathematica package has been created to ease the investigations. As the second phase, using the aforementioned package, some kind of diffusion analysis has been done on the newly constructed Rijndael-like cryptosystems. The fundamental challenge was to figure out the reason of having the particular polynomial chosen. By the end of the experiment, we concluded that choosing other polynomials with the same characteristics as an ingredient of the Rijndael algorithm, does not have any perceptible effects on the diffusion level.

Place, publisher, year, edition, pages
2014. , 30 p.
Keyword [en]
Rijndael, Advanced Encryption Standard, Symmetric key Encryption, Diffusion Analysis, Mathematica, Irreducible Polynomial
National Category
Computer Science Mathematics
URN: urn:nbn:se:lnu:diva-36304OAI: diva2:736474
Subject / course
Computer Science
Educational program
Network Security Programme, 180 credits
Available from: 2014-08-19 Created: 2014-08-06 Last updated: 2014-08-19Bibliographically approved

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Noroozi, Hamid
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