Homomorphic Encryption and its Applications in Multi-Cloud Security

This research study investigates the use of homomorphic encryption to bolster data security in multi-cloud environments. As cloud computing gains popularity, safeguarding data confidentiality, integrity, and privacy becomes paramount. Homomorphic encryption presents a solution by permitting calculations on encrypted data without decryption, thereby preserving data confidentiality and privacy. This paper delves into Partially Homomorphic Encryption (PHE) and fully homomorphic encryption (FHE), highlighting their capabilities and applications. The paper explores the difficulties of employing homomorphic encryption in systems that utilize multiple clouds. These difficulties include high computational costs, complex key management, issues with interoperability, and trouble identifying suitable applications. The paper emphasizes the need for continuing research and cooperation among academic institutions, businesses, and governmental organizations to address these difficulties and maximize the potential of homomorphic encryption in environments with multiple clouds.