An organization dumps all files into the cloud so that it can be easily available to all its employees, but retrieving a particular file from plenty of files is bit difficult task so, to make it easier one can apply efficient keyword based file retrieval in cloud mechanism. A data owner collects all the files and encrypts each file using homomorphic encryption method and these encrypted files are stored in a bucket of the cloud securely. The keywords are extracted from every file and a

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... y is formed, this dictionary is used to generate an index file. An index file is created for every file, which is further used for keyword based file retrieval.