| 摘要 |
The present invention relates to a method for proving the correctness of a query result produced by a data publisher while preserving the privacy of the query result. The method comprises delivering a public key of a public key/private key pair from a data owner to a client and delivering data and cryptographic metadata to at least one data publisher, wherein the metadata is associated both with the data and the public key of the public key/private key pair. The method further comprises receiving a query from the client, returning a query result and a verification object from the data publisher to the client in response to the query, and verifying the correctness of the query result, wherein the correctness of the query result is verified utilizing the verification object and the public key.
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