Remote Data Integrity Check and Data Uploading Using Client and Server Proxies

Large number of clients like to store data onto public cloud server (PCS) due to increase in advancement in cloud computing. As a result the new security problems are in need to be solved to help large number of clients in processing their data on public cloud servers. When the clients are not allowed to access the public cloud servers, they will be forwarded to proxy servers to process their data. Along with that, checking data integrity in that remote place is also a major security issue in public cloud storage. In this, it helps the clients in sending their data to the server via proxy and downloading the whole data with security. From the intension of solving security problem, we propose a proxy server oriented data uploading and remote integrity check of the data based on identity. For the same public key encryption and decryption is used. The remote data integrity check using proxy server with partial data method is used to address the problem. Our algorithm is efficient and very flexible. Based upon the real clients authorization, our protocol can realize private data integrity check using partial data. Keywords— Cloud computing, identity oriented – cryptography, proxy based public key cryptography, remote data integrity check, PCS, Original Client