Security Analysis of Cloud Storage with Access Control and File Assured Deletion (FADE)

Today most of the enterprises are outsourcing their data backups onto online cloud storage, services offered by third party. In such environment, security of offsite data is most prominent requirement. Tang et el. Has proposed, designed and implemented FADE, a secure overlay cloud storage system. Fade assures file deletion, making files unrecoverable after their revocation and also it associates outsourced file with fineg rained access policies to avoid unauthorised access of data. In their paper, we have done security analysis of FADE and have found some design vulnerability in it. We could also discover few attacks and find out their causes. We have also suggested few countermeasures to prevent those attacks and made few improvement in the FADE system.