Enhancing Cloud Security: A Hybrid PGP-Inspired Encryption System Using ECDH and AES-GCM

Manik, Sai Siddharth (2025) Enhancing Cloud Security: A Hybrid PGP-Inspired Encryption System Using ECDH and AES-GCM. Masters thesis, Dublin, National College of Ireland.

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Abstract

The rapid growth of cloud-based web applications has been increased concerns regarding secure data transmission, key management and system performance under concurrent type of workloads. There are some traditional encryption approaches which prioritise either strong security or high performance by resulting in trade-offs that are unsuitable for dynamic cloud environments. This study addresses the need for a balanced, scalable and secure encryption framework capable of operating in cloud-native architectures. To solve this problem there is a Pretty Good Privacy (PGP) inspired hybrid encryption system which was designed and implemented using Elliptic Curve Diffie–Hellman (X25519) for secure session key exchange and symmetric encryption with AES-GCM, DES included for legacy comparison. The system has been deployed as a stateless web application on AWS. Concurrent workload evaluation has been conducted with the help of Locust to simulate real-world cloud usage. Experimental results shows that the AES-GCM consistently outperformed DES in terms of latency.

Item Type:	Thesis (Masters)
Supervisors:	Name Email Gupta, Shaguna UNSPECIFIED
Uncontrolled Keywords:	Hybrid Encryption; PGP-Inspired Framework; Cloud Security; Elastic Beanstalk
Subjects:	T Technology > T Technology (General) > Information Technology > Cloud computing 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 Cloud Computing
Depositing User:	Ciara O'Brien
Date Deposited:	01 Sep 2026 09:16
Last Modified:	01 Sep 2026 09:16
URI:	https://norma.ncirl.ie/id/eprint/9721

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