An enhanced Data Possession Checking scheme using Identity Based Signature

The phenomenon of cloud storage is to keep enormous amount of data available given by the user. The user has to be assured that the integrity of the data stored is intact. In order to ensure the integrity of the data, we have come up with a new scheme called an enhanced data possession checking using Identity Based Signature. In the earlier existing approaches, the time taken for key exchange is not considered because of which the efficiency of the overall working model is reduced. By introducing this scheme, the data that is stored using Merkle Hash Tree can avoid the waiting time as the user can generate his/her own public key using the Identity Based Signature. The Merkle Hash Tree is constructed and the root is evaluated by both cloud service provider and the data owner. In order to check the integrity of the data, the data owner asks for a specific block which returns the axillary path along with the file asked. The root computation is done and the external verifier compares the roots. The efficiency and the security of this new scheme is evaluated by both theoretical analyzing and simulation experiments. The obtained solution proves that our proposed scheme is secure and efficient.