Data outsourcing: A threat to confidentiality, integrity, and availability

Today, every computing node is generating large amounts of data that cannot be stored on these resource constrained devices, so cloud computing provides an ample opportunity to use their storage facility. However, outsourcing personal data to third party storage facility inversely brings security and privacy concerns that make user to reluctance to use cloud computing facility. In this research paper we have made an attempt to provide end to end security of client data. The paper has designed a cloud storage framework that provides secure data outsourcing and retrieval of client data to ensure the integrity of data. Data outsourcing has threat to privacy at two point data in-transit and at rest. To provide assurance of data privacy encrypts the data before outsource using SSL. Further, the Predicate Based Encryption scheme has used to encrypt the client data at rest. The method focuses on multiple data owner scenario, and divides the users´ data depending upon user, severity rating (SR) such as low, and medium and high severity level. The experimental analysis has proven the combined approach provide a high degree of privacy preference of client data.