In cloud computing scenario security and privacy are important part. To reduce costing and for fast searching speed many data owners can outsource the data to public cloud storage.This proposed system can outsourced data files in encrypted form which protect data files and preserve privacy. Random utilization of data can be reduced due to encrypted file format. This paper include concept of conceptual graphs for semantic searching of documents. Every data user is authorized by data owner, thats why authorized user can download encrypted documents by decrypting it.

Keywords : Encryption Technique, Key Generation, Security, Encrypted key