Providing security and integrity for data stored in cloud storage

Cloud computing which is widely emerging technology in the recent years is adopted by most of the IT companies and other organizations. Storing large amount of data by the user in the LAN may cost the user heavily. We use different electronic storage device like file servers, Storage Area Networks (SAN) and Network Attached Storage (NAS) which provide high performance and many useful features to the user but the electronic storage has many drawbacks like it cost more, its life time is less and needs backup. Cloud storage avoid these problem by storing data in a virtual pool hosted by TPA. The TPA is responsible for maintaining the user data. But cloud storage has many draw back in which integrity and security of data stored in cloud storage is issues among it. So we create a scheme by which we provide a secure saving of our confidential data in cloud storage in an efficient manner which requires low computational power and time and disallowing hacker from penetrating into our privacy data storage. And we provide a simple and easy integrity checking mechanism when compared to other already present one by which we can verify whether our data is not corrupted and deleted or modified ours is an efficient. Our integrity checking mechanism is simple that it does not take more computational power. The mechanism even prevents the TPA who maintains our data in cloud storage from editing our file.