Abstract

Increased concern about data security is now experienced with cloud computing, mainly on the aspect of data confidentiality of the CSP. This research examines the use of cryptographic algorithms such as DES and AES in cloud computing to alleviate the security risk. Simulations in Matlab R2009a are conducted based on a quantitative approach for evaluating the encryption speed, data security, and the resource usage of both algorithms. Findings show that although DES improves data security, the short key length and susceptibility to cryptographic attacks make it less efficient for large-scale cloud applications. On the other hand, AES has better security and scalability but is hindered by its computational intensity. The comparative analysis suggests that AES is a better choice for cloud security if optimization strategies overcome its resource-intensive nature. It, therefore, contributes to understanding solutions in cryptographic secure cloud computing and emphasizes the need for tailored encryption standards that respond to specific cloud security needs. Future research should further address emerging cryptographic technologies and real-world implications for diverse cloud environments.