Enhancing Security Of Data by Replacing Public Cloud with Hybrid Cloud

Abstract: Recent advances have given rise to the popularity and success of cloud computing. However, outsourcing the data to a third party causes the security and privacy issues to become a critical concern. This has raised the important security issue of how to control and prevent unauthorized access to data stored in the cloud. In this paper the authors propose to develop hybrid cloud i.e. private cloud and public cloud, where the private cloud should store only the organization's sensitive structure information and the public cloud should store the actual data. This proposed architecture not only will dispel the organization's concerns about risks of leaking sensitive structure information, but will also takes full advantage of public cloud’s power to securely store large volume of data. All data on public cloud is to be stored in encrypted form by employing cryptographic techniques which will save data from misuse and restrict data access to only those intended by the data owners.

Keywords: Outsourcing,Hybrid,Encryption, Cloud, Cryptography