Remote data completeness verification method facing cloud storage

The invention provides a remote data completeness verification method facing cloud storage. According to the method, the aggregate signature and specified certifier signature technology is utilized, the verification function on the user data completeness by users and the third party auditors is realized, and meanwhile, the information of users for data completeness is enabled not to be leaked; the verification information transparency control is realized through the zero knowledge proving technology, and when the dispute exists between the users and a server, the third party auditors can generate the undeniable high-confidence-degree proving through the non-interactive zero knowledge proving technology. According to the method, under the condition that a cloud storage service provider is incredible, the accuracy of the cloud data completeness verification can also be ensured, and the method provided by the invention has the advantages that the realization is easy, the cost is low, the data protection performance is high, the third party audit is supported, the privacy protection mechanism is flexible, and the like.