SGX data integrity auditing method based on dynamic frequency table

Abstract

The invention provides an SGX data integrity auditing method based on a dynamic frequency table, and relates to the technical field of information security. The SGX data integrity auditing method based on the dynamic frequency table comprises the following six steps: S1, key distribution and signature preprocessing; S2, enabling the SGX to update the use frequency value of the data block in real time; S3, enabling the SGX to initiate an auditing challenge; S4, providing data evidence by the CSP; S5, enabling the SGX to check the correctness of the evidence; S6, enabling the SGX to publish an audit result. According to the invention, the auditing challenge sampling units are divided according to the frequency of real-time use data of a user, and a dynamic sampling mechanism combined with the data use frequency is realized based on PPS. Compared with a static random sampling mode, a single integrity auditing task can be completed by using less challenge data blocks, and the efficiency of the integrity auditing system is improved.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a method for auditing the integrity of SGX data based on a dynamic frequency table. Background technique [0002] Cloud storage service is an emerging technology based on cloud computing. A large number of users store data in the cloud. In order to solve the user's own storage space, the user will delete the local copy, so that the user loses actual control over the data. This makes remote data integrity verification a hot topic. Due to limited professional knowledge and limited computing resources, users cannot directly audit remote data. Entrusting the data audit task to a third party can reduce the burden on users. This is public auditing. Trusted third parties can regularly audit results Perform statistics and releases to constrain malicious behavior of the cloud. Traditional auditing methods can only randomly select data blocks for challenge, or use static sam...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a SGX data integrity audit method based on a dynamic frequency table, by using SGX to replace a trusted third party (TPA) to complete the public audit, while realizing the TPA audit function and also It perfectly solves the problem of user privacy leakage. At the same time, under the SGX audit mechanism, a frequency value modification mechanism is proposed to record the user's access to data in real time.

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