An efficient semantic secure keyword based search scheme in cloud storage services

Cloud data storage (Storage as a Service) is an important service of cloud computing it can also be referred as Infrastructure as a Service (IaaS). The data storage security problem is an important aspect of Quality of Service (QoS). In the existing cloud storage, the user stores his information in the encrypted format, preserving privacy. When a user wants to retrieve files through keyword search, the cloud storage server returns all matched data, which forces the user to decrypt all returned data. Decrypting all the returned data will result in depletion of CPU time and results in increased memory utilization. This paper proposes an efficient semantic secure keyword based search (ESSKS) scheme, which retrieves exact information needed by the user, ensuring that the same keyword does not always produce the same result, in user querying, reducing computational and communication overhead. This security mechanism also addresses the data integrity problem.