Enabling Fast Public Auditing and Data Dynamics in Cloud Services

Hosting data in the cloud minimizes maintenance requirements, allowing users to easily access their data on cloud servers. However, cloud servers have full control over outsourced data, which raises security concerns about data integrity. The cloud, for example, might have the financial incentive to discard rarely accessed data, freeing up valuable storage space to, say, host other data-centric applications. Therefore, users need to confirm periodically that their data is intact but this has become increasingly onerous due to the ever-growing volume of data being outsourced.