Doktorarbeit / Dissertation, 2019
113 Seiten
This book aims to provide a comprehensive understanding of cloud computing, covering its fundamentals, architecture, service models, deployment models, and key characteristics. It explores strategies for improving the performance and adoption of cloud computing in various domains. The book emphasizes the importance of cloud computing for businesses and individuals, highlighting its benefits and challenges.
Chapter 1 introduces the concept of cloud computing, exploring its history, evolution, and key definitions. The chapter dives into the architecture of cloud computing, outlining its components and functionalities. It also delves into different service models such as SaaS, PaaS, and IaaS, explaining their characteristics and applications. Further, the chapter examines the deployment models of cloud computing, including public, private, hybrid, and community clouds. Finally, it discusses the key characteristics of cloud computing, emphasizing its scalability, elasticity, and on-demand nature.
Cloud computing, cloud architecture, service models, SaaS, PaaS, IaaS, deployment models, characteristics, scalability, elasticity, on-demand, performance optimization, adoption strategies, benefits, challenges.
The three main service models are SaaS (Software as a Service), PaaS (Platform as a Service), and IaaS (Infrastructure as a Service).
The model uses RSA Partial Homomorphic encryption for data, MD5 hash algorithm for integrity verification, and access permission lists to control who can read or write the data.
The research shows that the proposed model using this algorithm takes less encryption and decryption time compared to a combination of Triple DES and SHA, providing better efficiency.
Key characteristics include rapid elasticity, on-demand service, broad network access, multi-tenancy, pay-per-use, and scalability.
The cloud provider calculates a hash value of the file using MD5. The owner later compares this with a newly calculated hash of the cloud data to ensure no unauthorized modifications occurred.
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