This research paper underscores the paramount importance of security in cloud computing platforms, with a particular emphasis on decentralized cloud environments. The primary objective of this study is to develop a comprehensive methodology for evaluating the performance of security algorithms, specifically homomorphic encryption algorithms from the LightPHE library. Through an in-depth analysis of these algorithms, this research aims to highlight the critical role of encryption in safeguarding personal information online and the necessity of assessing algorithmic performance in cloud platforms. By identifying common characteristics among well-established homomorphic algorithms, this study will inform the development of a testing methodology that will enable the selection of optimal algorithms for cloud platforms, thereby ensuring the effective utilization of security measures. Ultimately, this research contributes to the enhancement of cloud security and the protection of online personal information through a rigorous examination of algorithmic performance.