A Time-Controlled Data Destruction Model Adapted for Cloud Storage

With the progress of cloud storage technology, its data security is threatened and its time of data destruction is limited in its life cycle in the cloud storage environment. Based on object storage technology, cryptography and data rewrite technology, a time-controlled data destruction model is proposed under the cloud storage environment to protect user’s data security in its whole life cycle. The model is processed by the function transformation to generate the ciphertext and avoid the complex key management. To improve the controllability of data destruction, a time-controllable self-destructing data object is designed so that any illegal access to expired data will trigger a data rewrite program to execute assured deletion of self-destructing data objects. Finally, the analysis and experimental results show that the scheme can enhance the flexibility and controllability of data destruction and reduce the performance cost, while protecting the data safely and more efficiently.