Abstract

Cryptography is widely used in the field of cloud computing now days. Cloud computing provides the users with the facility to store large amount of data in the cloud from different location. Also data sharing can be done efficiently while dealing with cloud data. But these facilities can bring new challenges to users mainly concerning security and privacy. These are the main issues which can restrict the users to upload their data in the cloud and these issues can prevent users from using the cloud services for various applications. In these cases, cryptographic techniques plays a major role for enhancing security in the field of cloud computing.