1 Analytical Method to Compute the Cloud Computing Data Security Issues by Using Encryption Algorithms Abdul Hannan Khan 1, 2* , Syed Anwer Hasnain 1 , Shahan Yamin Siddiqui 1, 2 , Muhammad Sohail Irshad 2 , Muhammad Sajid 2 , Shahid Iqbal 3 1 School of Computer Science, National College of Business Administration & Economics, Lahore, Pakistan. 2 Department of Computer Science, Minhaj University, Lahore, Pakistan. 3 Department of Computer Science & IT, Virtual University of Pakistan, Lahore, Pakistan. Abstract All the associations are genuine thoughts to receive the cloud computing administrations, seeing its advantages as far as cost, openness, accessibility, adaptability and profoundly computerized procedure of upgrading. Cloud computing upgrade the present capacities progressively without further speculation. Cloud computing is a band of assets, applications, and administrations. With the execution of cloud computing, associations have solid worries about the security of their information. The research focuses on the security issues of cloud services. The AES and RSA algorithms will be verified on five parameters key generation time, encryption execution time, memory usage, file uploading time and file downloading time. The CloudSim simulator will be used to find results that the RSA is performing much better than AES in terms of encryption execution time. Keywords: Advanced Encryption Standard (AES), Rivest-Shamir-Adleman Algorithm (RSA), CloudSim, IAAS, PAAS, SAAS, Key generation time, encryption execution time, and memory usage, file uploading time, and file downloading time. Received on 03 March 2020, accepted on 04 May 2020, published on 13 May 2020 Copyright © 2020 Abdul Hannan Khan et al., licensed to EAI. This is an open access article distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/3.0/), which permits unlimited use, distribution and reproduction in any medium so long as the original work is properly cited. doi: 10.4108/eai.13-7-2018.164555 1. Introduction Today is the era of Cloud Computing Technology in IT Industries. Cloud computing, which is based on the Internet has the most powerful architecture of computation. It reckons in a compilation of integrated and networked hardware, software and internet infrastructure. Cloud computing is the delivery of on-demand computing services from applications to storage and processing power, typically over the internet. Rather than owning their computing infrastructure or data centers, companies can rent access to anything from applications to storage from a cloud service provider. One benefit of using cloud computing services is that firms can avoid the upfront cost and complexity of owning and maintaining their own IT infrastructure, and instead simply pay for what they use when they use it. In turn, providers of cloud computing services can benefit from significant economies of scale by delivering the same services to a wide range of customers [1]. Cloud computing is a new rising field of preparing in which resources are available at the versatile environment and obliging practically no exertion. On account of its element and overhauled highlights individuals and affiliations are going to switch towards the cloud. Cloud organization supplier gives the cloud administrations at the economy of scale, compelling and gainful access. Its improvement is from scattered enrolling and the term circulated registering is used as a piece of different extents of translations [2]. The cloud organization suppliers give three particular organizations in the perspective of different capacities, for instance, IaaS (Infrastructure as a Service), SaaS (Software as a Service) as well as PaaS (Platform as a Service) [3]. SaaS: contains programming running on the provider’s cloud base, passed on various clients (on enthusiasm) by method for a slight client (e.g. Program) over the Internet. Common representations are Google Docs and Salesforce.com. PaaS: These give a designer the versatility to make applications on the supplier's stage. A virtualized stage that consolidates one or more servers, working structures, and specific applications. Major EAI Endorsed Transactions on Scalable Information Systems Research Article *Corresponding author. Hannankhan.cs@gmail.com EAI Endorsed Transactions on Scalable Information Systems 10 2020 - 12 2020 | Volume 7 | Issue 28 | e3