Data possession proof scheme

Abstract

The invention discloses a data possessionproof scheme, belonging to the field of information security and being suitable for a cloud storage security management technology. In the scheme, a key generation module, a label generation module, a challenge module, a proof generation module and a verification module are included. The scheme only needs addition, subtraction, multiplication and modular arithmetic and supports modification and additional operations of data blocks, data possession proof of multiple duplicates and third-party verifiable data possessionproof. The scheme disclosed by the invention has the advantages of high security, low computational expense and low requirements for storage space and traffic, and provides a new research orientation for developing the data possession proof scheme.

Description

technical field

[0001] The invention relates to a security management technology of cloud storage, in particular to a data possession certification scheme in a cloud environment, and belongs to the technical field of information security. Background technique

[0002] In the era of big data, more and more owners are willing to entrust data management to cloud service provider CSP (Cloud Service Provider) to reduce the cost of owner data management. On the other hand, putting data on cloud servers will cause various data security issues. Since the CSP is not necessarily completely trustworthy, the CSP may conceal the data destruction and loss caused by improper management and other reasons from the Owner to evade responsibility. Proof of Data Possession PDP (Provable Data Possession) allows the Owner to verify whether the untrusted CSP has correctly saved the Owner's data, preventing the CSP from modifying or deleting data.

[0003] Looking at the existing data possession p...

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