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Algorithm and software development for security estimation of SPN-based block cipher against related-key attacks
Linnaeus University, Faculty of Technology, Department of Computer Science.
2014 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Symmetric block ciphers are among the most widely used cryptographic primitives. In addition to providing privacy via encryption, block ciphers are used as basic components in the construction of hash functions, message authentication codes, pseudorandom number generator, as part of various cryptographic protocols and etc. One of the most popular block ciphers nowadays is AES (Advanced Encryption Standard), which has been used as a standard of encryption in many countries of the world. In spite of popularity of this cipher a huge attack was found on its key-expansion algorithm some years ago. That is why it is important to analyze carefully this component and understand what weak points admit attacks. Since we know that we can improve existing algorithm to protect cipher from attacks or build up a new algorithm taking into account founded weaknesses so there will be no chance to break it with existing knowledge.

The goal of this project is to create some method which can estimate security of encryption algorithm against related-key attacks. For this reason the perspective block cipher is introduced. This cipher is a candidate to the public standard of encryption in Ukraine so that is why this research is very important. Actually the introduced method of estimation is created especially for this cipher but also can be used for other ciphers based on the substitution-permutation network. The developed method was applied to the cipher and results are represented in the report. Also the complexity estimation of this algorithm is expressed. The software implementation is described in the last chapter of report.

Place, publisher, year, edition, pages
2014. , 46 p.
Keyword [en]
Algorithm and software development for security estimation of SPN-based block cipher against related-key attacks
National Category
Computer Systems
URN: urn:nbn:se:lnu:diva-34728OAI: diva2:722218
Educational program
Software Technology Programme, Master Programme, 120 credits
Available from: 2014-06-09 Created: 2014-06-05 Last updated: 2014-06-09Bibliographically approved

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Kaidalov_report(867 kB)104 downloads
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Type fulltextMimetype application/pdf

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Kaidalov, Dmytro
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