Enhancement in Homomorphic Encryption Scheme for Key Management and Key Sharing in Cloud Security

With the moving time, cloud computing is gaining importance, as it offers storage of data at terribly less worth and is additionally gift at all the time over the net. Cloud computing lets the users use applications void of installation and access their personal information at any laptop with the helpof internet access. Cloud computing is most propitious however it additionally has bound hindrances for storage of data. For information security, cryptography is one amongst the conventions used schemes. Cryptography stratagems area unit primarily of two types: Fully Disk Encryption Scheme (FDE) and Fully Homomorphic Encryption scheme (FHE). Comparison is completed between the two schemes on bound factors that shows the Fully Homomorphic Encryption scheme is superior than Fully Disk Encryption scheme in terms of security and privacy of information however it even have some uncertainties like key management and key sharing. In this paper, we tend to propose a complete unique technique to resolve the uncertainties of key management and key sharing. To realize this novel technique we will establish a secure channel between user and cloud server by victimization Diffie Hellman Key Exchange Algorithm and that we will also use the HMAC protocol for information integrity and information authentication.