Data owner select the data and create the bit vector for that data. Using that bit vector of the data the binary data is generated. The binary data is the index for the data in the data owner. The bit vector is the bytes form of the data in the data owner. The bit vector is converted into the binary data. These bit vector and the binary data are ready for the data ciphering.
DATA CIPHERING

In this model, the cloud server is supposed to only know encrypted data set C and searchable index I, both of which are outsourced from the data owner (Known background model). Then the data owner have to encrypt the original data and send it to server. And then encrypt the binary data or the index and send it to server. Service provider did not know about the original content in the data owner. This index are used to refer the data in the service provider. It gives more security in the server side, so that the attackers can’t use the data. Our system must prevent Server from learning any additional correspondence between plaintext values and ciphertext values except those obtained by prior knowledge. That is, we must protect the plaintext values for any encrypted records or queries from being disclosed to Server. …show more content…
A query from Users will go though the trusted Proxy, which encrypts the query and submits the query to Server. Server computes and returns the answer to Proxy. Proxy then decrypts the answer, and returns the answer to Users. For example, Owner is a hospital, who outsources patient records to the cloud, and Users are various medical research labs, who post queries to retrieve patient records of