Performance and security improvements of Dӧmӧsi’s cryptosystem

Khaleel, Ghassan and Turaev, Sherzod and Mohd Tamrin, Mohd Izzuddin and Alshaikhli, Imad Fakhri Taha (2016) Performance and security improvements of Dӧmӧsi’s cryptosystem. International Journal of Applied Mathematics and Statistics, 55 (2). pp. 32-45. ISSN 0973-1377 E-ISSN 0973-7545

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Abstract

Dӧmӧsi’s cryptosystem (Dӧmӧsi’s, 2008; Dӧmӧsi, November 11–14, 2009) is a new stream cipher based on finite automata without outputs. The cryptosystem uses specific deterministic finite accepters as secret keys for the encryption and decryption. Though this cryptosystem has been proven to be secure against different standard attacks (see (Kovacs´ and Penzes, January 27–30, 2010)), the proposed encryption algorithms in (Dӧmӧsi’s, 2008; Dӧmӧsi’s, November 11–14, 2009) involve exhaustive backtracking in order to generate ciphertexts. In this research, we propose a modified encryption algorithm, which improves performance of the system up to a better linear-time without effecting its security.

Item Type:	Article (Journal)
Additional Information:	6846/50467
Uncontrolled Keywords:	Domosi’s cryptosystem; deterministic finite automata; control system; time ¨ complexity; performance; security
Subjects:	Q Science > QA Mathematics Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Information and Communication Technology > Department of Computer Science Kulliyyah of Information and Communication Technology > Department of Computer Science Kulliyyah of Information and Communication Technology > Department of Information System Kulliyyah of Information and Communication Technology > Department of Information System
Depositing User:	Mohd Izzuddin Mohd Tamrin
Date Deposited:	07 Jun 2016 08:28
Last Modified:	03 Oct 2017 16:06
URI:	http://irep.iium.edu.my/id/eprint/50467

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