DATA SHARING SCHEME FOR BIG DATA BASED ON USER REVOCATION

As cloud provides various services number of user stores their data on cloud. Integrity of cloud data is important as number of user shared data on cloud. User revocation is common in such schemes, as user’s membership changes for variety of purpose. Previously, user revocation overhead in such schemes was related with the overall different file blocks occupied by a revoked user. Remote information integrity checking permits an information storage server, says a cloud server, to control a character that it’s really storing owner’s data honestly. Up till now, various Remote information integrity checking protocols are planned, however most of the concept suffer from the difficulty of a fancy key organization, that is, they rely on the expensive public key infrastructure which could hamper the preparation of Remote information integrity checking in observe. This project, have a tendency to propose a replacement construction of identity-based (ID-based) Remote information integrity checking protocol by creating use of key homomorphic cryptanalytic primitive to remove the system complexness and also the value for establishing and managing the general public key authentication framework.