Modes of Operation of the AES Algorithm

Blazhevski, Dobre and Bozhinovski, Adrijan and Stojchevska, Biljana and Pachovski, Veno (2013) Modes of Operation of the AES Algorithm. In: Proceedings of the Tenth Conference on Informatics and Information Technology. Faculty of Computer Science and Engineering, Ss. Cyril and Methodius University in Skopje, Macedonia, Skopje, Macedonia, pp. 212-216. ISBN 978-608-4699-01-9


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AES is an algorithm for block encryption, which is in widespread use. Back in 2001, five modes of operation of the AES algorithm were standardized: ECB (Electronic Code Book), CBC (Cipher Block Chaining), CFB (Cipher FeedBack), OFB (Output FeedBack) and CTR (Counter). This paper describes these modes and the details of their operation, their strengths and weaknesses, as well as the demands for their parameters, which are necessary to guarantee security and are of utmost importance for a proper AES implementation. The parameters are often neglected, and even if that is not the case, the modes of operation can be unreliable and vulnerable to various kinds of attacks. In addition, as a result of the analysis of the AES modes of operation by studying the literature, the conclusion is that, in order to obtain a proper and secure AES implementation, the CTR mode should be used.

Item Type: Book Section
Subjects: International Conference on Informatics and Information Technologies > Security and Cryptography
Depositing User: Vangel Ajanovski
Date Deposited: 28 Oct 2016 00:15
Last Modified: 28 Oct 2016 00:15

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