Implementation of Keyword search considering users preference in Encrypted Data in Cloud Computing

Cloud Computing is very popular and used in the every field let it be for usage of software or as a platform or as an infrastructure. Cloud computing is now an important thing around which the technologies revolve. Cloud computing has made everything available in just a click away format. Heavy data is stored using storage as a service or a huge amount of data resides on cloud for the various transactions to be done. When such a huge dependence is done on cloud computing it's obvious for the data to be stored in encrypted format. But when the data is stored in encrypted format, then the option of doing search on plaintext data is not possible. Therefore search on encrypted data is must. On addition, if the user is able to give his own preference then the search will be more efficient. Thus in this paper we will tell how the keyword search considering user's preference is implemented. Whenever an owner stores a file in cloud an index for that is automatically generated and the file is encrypted and stored in the cloud. When a user wants to search from the data stored in the cloud in encrypted format, he can give the list of keywords along with his preferences, i. e. which keyword has higher or lower prefence. Corresponding to that preference the application retrieves the file from cloud and in the ranking order as of the preference. in our implementation all the files are stored in owncloud[13]