A model to ensure data integrity in the cloud

Abstract: Cloud computing refers to the delivery of computing resources over Internet, there are significant concerns and security challenges appear about releasing control over user's data, because the Cloud service provider could intentionally or accidentally alter or delete some information of the user. It is not easy for the user to verify that his data is secure. In this paper, we are going to focus on cloud data storage to ensure the integrity of user's data in the cloud. We built a model with dynamic data operations support including data append, update and delete, including online and offline monitoring to ensure data integrity of user's in the cloud based on verification tokens and local database repository, taking in our consideration the size of data file and network bandwidth. Performance and efficiency evaluations show that the model is highly efficient against malicious data modification attack.

Keywords: Cloud computing, Cloud service provider, dynamic data operations support, Online Auditing, Offline VerificationI-