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Enhancing Data Security through Implementation of a Hybrid Cryptosystem with Emphasis on Levels of Entropy

Kearns, Lee (2021) Enhancing Data Security through Implementation of a Hybrid Cryptosystem with Emphasis on Levels of Entropy. Masters thesis, Dublin, National College of Ireland.

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Abstract

As the technology world we live in today continues to rapidly develop and we see more and more people sharing data across the internet, new and advanced ways of securing this data must be implemented. This paper proposes a method where the implementation of a hybrid cryptosystem is introduced to provide an algorithm that portrays higher entropy levels, making it more secure against attacks such as brute force, man-in-the-middle attacks, stream cipher attacks, or ciphertext frequency analysis. The paper proposes a system that combines the two-industry standard symmetric and asymmetric algorithms AES and RSA. The encryption process is implemented through OpenSSL and GPG scripts for efficiency, while entropy levels are calculated using the Shannon Index Formula. The hybrid system has been evaluated with alternative encryption algorithms and is found to have higher entropy levels in comparison, with levels cumulating to an average of 4.02649, thus enhancing data security.

Item Type: Thesis (Masters)
Subjects: Q Science > QA Mathematics > Electronic computers. Computer science
T Technology > T Technology (General) > Information Technology > Electronic computers. Computer science

Q Science > QA Mathematics > Computer software > Computer Security
T Technology > T Technology (General) > Information Technology > Computer software > Computer Security
Divisions: School of Computing > Master of Science in Cyber Security
Depositing User: Clara Chan
Date Deposited: 14 Oct 2021 14:22
Last Modified: 14 Oct 2021 14:22
URI: http://norma.ncirl.ie/id/eprint/5096

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