Enabling Public Auditability, Dynamic Storage Security and Integrity Verification in Cloud Storage

Cloud computing is an information delivery model, where resources are retrieved from the web based-tools without direct connection to the server and it moves services - such as storage and applications to the server through the internet. One of the important issue in cloud computing is security of remotely stored data from client point of view. The data which is stored on server lacks data integrity, where often checking of data which is stored on server is carried out. This method of storing and managing the data possess many security challenge. This paper mainly focus on data storage security and integrity checking. The data integrity checking has been carried out using a trusted third party (TTP), is the trusted person has the ability to expose risk of cloud storage services on behalf of the clients upon request. Along with checking integrity of stored data, the proposed work also supports storage security dynamically. Motivation of the work, inferred from literature survey. RSA based storage security system (RSASS) uses auditing of text file publically by existing RSA algorithm and integrity checking can be done by using HASH function. Using this scheme the security for data which is stored on cloud by TTP, dynamic cloud storage security by changing cloud and stored data integrity checking is improved while compared with existing system