Research
TPA Ensuring Data Integrity in Cloud Environment
Cloud computing is an internet based computing where virtual shared servers provide software, infrastructure, platform and other resources to customers on a pay-as-you-use basis. In one of the services offered by cloud viz. Storage as a Service, users outsource their data to cloud without having direct possession or control on it. Storage of large data in cloud reduces costs and maintenance. But the customer is unaware of the storage location. Here risk involved is modification of data or tampering of data. In this paper we propose a data correctness scheme in which Third Party can audit the data stored in the cloud and assure the customer that the data is safe. Hence we implemented a scheme for verifying integrity of data. Such verification systems prevent the cloud storage archives (storage) from misrepresenting or modifying the data stored by using frequent checks on the storage archives.
Monitoring Data Integrity while using TPA in Cloud Environment
Cloud Computing is the arising technology that delivers software, platform and infrastructure as a service over a network. Cloud minimizes the burden of users by allowing them to remotely store their data and eliminates the need of local storage and maintenance. Even though benefits are higher but while storing data in cloud, correctness of data and security are major concerns as there are many chances for CSP to behave unfaithfully towards users regarding the status of their outsourced data. In order to overcome the threat of integrity, user can entrust third party auditor to assess the risk of outsourced data when needed .For this, in our proposed scheme we are using SHA-2 which is cryptographic hash function to verify integrity of data along with XOR mechanism, Station-to-Station key protocol for key generation and mutual authentication with TPA.
Survey on Efficient Audit Service to Ensure Data Integrity in Cloud Environment
Cloud computing is an internet based computing which provides different users an opportunity to store their data in the cloud. While data outsourcing relieves the owner of the burden of the local data storage and maintenance but as they have no longer physical possession of outsourced data makes data integrity protection a very challenging task. This paper explores the secure cryptographic hash function along with some other techniques that can be used by TPA to ensure the integrity of data stored in the cloud at regular intervals or on user request.
