In the era of cloud computing, ensuring the confidentiality and integrity of data stored in the cloud is paramount. The RSA (Rivest-Shamir-Adleman) algorithm, a widely used public-key cryptosystem, provides a robust method for securing data through encryption and decryption. This study explores the application of the RSA algorithm for encrypting data before it is uploaded to the cloud and decrypting it upon retrieval. By leveraging the strengths of RSA, this approach ensures that sensitive information remains protected from unauthorized access, even when stored on third-party cloud servers. The paper discusses the implementation of RSA encryption and decryption in a cloud computing environment, evaluates its performance, and highlights the benefits and potential challenges associated with its use.

KEYWORDS: RSA Algorithm, Cloud Computing, Data security, Data Encryption, Data Decryption