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Sanket Vyapari, Shivani Tawde, 3Mitali Joshi, Achyut Pratap, Rashmi Dhumal

In a world where digitization of day to day activities is increasing rapidly, the strain is on professionals to provide the secure services & storing the data in encrypted form on cloud. The need for cloud security services is rising tremendously. However, there are many loopholes in today's system by which data can be deciphered/extracted and used by unauthorized person as per their needs. With the growth in volume and experience of cyber- attacks, ongoing attentions is applied to protect personal information, companies, government, military, corporations and other businesses who collect, process and store a great deal of confidential information on cloud in high volume. Data encryption is a basic solution for providing confidentiality to sensitive data. However, performing operations on encrypted data requires extra overhead, since repeated encryption-decryption need to be performed for every single operation on encrypted data. Fully Homomorphic Encryption (FHE) is the head on solution to solve this issue, since it enable to perform computations directly on encrypted data without sharing the secret key needed to decrypt the data. This paper will include a survey of how FHE operation is performed by using the Scarab library to overcome the confidentiality problems of data stored on cloud.