Published Paper Details:

Cloud is a service model to provide facility to user for store data in the cloud for avoids the expenditure of local data storage and maintenance. So many data integrity auditing scheme have been proposed for ensure the integrity of the data stored in the cloud. In the existing system the process of data integrity auditing scheme users requires the private key to generate data authentication. For storing the private key user will require hardware token (e.g. USB token, sensor card) and memorize a password for activate this private key. If this hardware token is lost or this password is forgotten most of the current data integrity auditing schemes would be unable to work. To solve this problem we proposed a new paradigm called data integrity auditing without private key storage and design such a scheme. In the proposed system to use biometric data (e.g. iris scan, fingerprint) as the users fuzzy private key to avoid using the hardware token, to confirm the identity of the users we can utilize a linear sketch with coding and error correction process .in addition we can design a new signature scheme which not only supports blockless verifiability but also compatible with the linear sketch. The proof of safety and performance analysis show that our proposed scheme achieves security and efficiency.