Secured Cloud Data Outsourcing Model Using Two Party Integrity Scheme
Sabir Ali, Y Justindhas, M Lakshmanan, P. Hari Kumar, Priya Baskaran
Abstract
Securing the data in the cloud is very challenging problem because security model proposed by the cloud service provider may not be acceptable by the client on many occasions. Inspite of those security concerns organizations show interest in outsourcing their data because of the variety of benefits offered by the cloud. To enhance the security, the cloud clients usually encrypt the data before outsourcing to it to the cloud service provider. Encryption alone will not provide sufficient guarantee for providing storage security to the outsourced data. To overcome these security issues we have proposed a new encryption model for the outsourced data in the cloud. This model uses a trusted third party manager who acts as an intermediary between the data owner and the cloud service provider. The model used in this approach is called two-person integrity scheme. In this model the encryption key is managed by both the cloud service provider and the data manager. The proposed model follows two stage of encryption. In this first stage the key is derived from the data owner and data manager. In the second stage the key is determined by the data manager and the cloud service provider. The experimental results of the proposed system are better than the existing cloud security algorithms