International Journal of Advanced Research in Computer Engineering & Technology
Cloud storage helps enterprises and government agencies significantly reduce their financial overhead of data management, since they can now archive their data backups remotely to third-party cloud storage providers rather than maintain data centers of their own. Security concerns become relevant as the authors outsource the storage of possibly sensitive data to third party cloud storage. Data stored in cloud may be unexpectedly disclosed in the future due to malicious attacks on the cloud or careless management of cloud operators. Secure data transfer is needed to maintain the data security between authorized users. The challenge of achieving secure data sharing is that they have to encrypt the data and at the same time it should be available to those authorized clients.