Publicly Verifiable Remote Data Integrity

摘要

More and more customers are outsourcing data storage to remote archive service providers that are responsible for properly preserving the data. As such, it has become crucial for an archive service to be capable of providing evidence to demonstrate the integrity of data for which it is responsible, from the time it receives the data until the expiration of the archival period. Pairing-based provable data integrity (PDI) scheme is proposed that enables not only the customer but also a third-party verifier to check remote data integrity. This PDI scheme is provably secure and efficient. Compared to the best-known prior art, our experiments under defined conditions show that our PDI scheme works 50 times faster in fingerprinting the data, and the resulting fingerprints are 30 times smaller in size.