System and method for high-efficiency data integrity auditing supporting safety duplication eliminating in cloud environment

The present invention belongs to the cloud data technology field, and discloses a system and method for high-efficiency data integrity auditing supporting safety duplication eliminating in a cloud environment. A data owner module is configured to store local data after safety duplication eliminating on cloud, submit a data management task to a cloud service provider module and submit a data auditing task to a third-party audit module; the cloud service provider module is configured to provide data outsourcing storage and integrity auditing service to take the user' place to perform data storage and management; the third-party audit module is configured to replace the data owner module to provide the data integrity auditing service and return back an auditing result; and a certificate authority module is configured to generate a data owner module anonymous public key certificate, track the real identities of malicious users and generate public parameters and label aggregation secret keys. The safety duplicatio