Cloud environment data integrity verification method based on fully homomorphic encryption
A data integrity and fully homomorphic encryption technology, applied in the field of information security, can solve the problems of not supporting publicity verification, high computing overhead, and unsuitable cloud storage massive data service mode, etc., to reduce communication overhead, compact logic, significant effect
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[0039] Specific embodiments are given below to further illustrate the technical solutions of the present invention in a clear, complete and detailed manner. This embodiment is the best embodiment based on the technical solution of the present invention, but the protection scope of the present invention is not limited to the following embodiments.
[0040] In the actual implementation process of the present invention, the cloud storage server sends the calculated integrity proof to the user in this process, without including the file or a subset of the file. After the user receives the integrity proof, the local Carry out verification calculation, and judge whether the target data block of this verification maintains integrity in the cloud according to the result obtained by the local calculation. Diffie-Hellman system, RSA system and bilinear pairing are common algorithms with homomorphic properties in this type of protocol.
[0041] like figure 1 As shown, a cloud environme...
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