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A modified approach to improve the performance of AES using feistel structure


Citation

Al-Ansi, Afeef Yahya Ahmed (2018) A modified approach to improve the performance of AES using feistel structure. Masters thesis, Universiti Putra Malaysia.

Abstract

In encryption algorithm design, apart from the security performance, processing performance and the cost of the implementation are very important trade-off parameters. A most popular and widely adopted symmetric encryption algorithm is the Advanced Encryption Standard (AES). It suffers from the demand for the performance efficiency. To improve its computational cost, we propose a modification of the AES technique. Having found that out of the four major operations in the AES; MixColumn is the one that takes huge amount of computing time and for which replacement with look-up table adds additional space constrain, we propose replacing the MixColumns with a Feistel Structure that exits and is the main engine of the Data Encryption Standard (DES). Empirical performance analysis on our proposed modified AES shows a significant reduction in the processing time by up to 67% on the average. The method support parallel implementation with little overhead.


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Additional Metadata

Item Type: Thesis (Masters)
Subject: Data encryption (Computer science)
Subject: Data Encryption Standard
Call Number: FSKTM 2018 27
Chairman Supervisor: Assoc. Prof Dr. Zurina Mohd Hanapi, PhD
Divisions: Faculty of Computer Science and Information Technology
Depositing User: Ms. Nur Faseha Mohd Kadim
Date Deposited: 18 Jun 2019 02:38
Last Modified: 18 Jun 2019 02:38
URI: http://psasir.upm.edu.my/id/eprint/68819
Statistic Details: View Download Statistic

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