Cloud data security positioning method based on integrity auditing and communication time delay

Abstract

The invention belongs to the technical field of distributed data geographic positioning, and discloses a cloud data security positioning method based on integrity auditing and communication time delay. The method comprises the following steps: encoding and encrypting an original data file by a data owner by using a Reed-Solomon error correction code, and completing an encoding operation during theinitialization stage; when the data owner wants to position data in the cloud of the data owner, requiring each agent node to perform a distributed challenge operation; enabling each distributed agent that receives an instruction of the data owner to challenge cloud storage; receiving a set of challenge requests and providing a proof result by a cloud server; executing a challenge response protocol and broadcasting a recoverability certificate to each agent node by the cloud server; in the verification stage, mainly performing a recoverability verification function and extracting geographic measurement information by the distributed node; and running a position estimation algorithm to estimate the position of the cloud server by the data owner. According to the cloud data security positioning method based on the integrity auditing and communication time delay provided by the invention, a potential malicious server with manipulation delay and a counterfeiting position can be checked; and through theoretical analysis, the method is considered to be effective and correct.

Description

Technical field [0001] The invention belongs to the technical field of distributed data geographic positioning, and in particular relates to a cloud data safe positioning method based on integrity audit and communication delay. Background technique [0002] At present, the existing technology commonly used in the industry is as follows: cloud computing is an information technology that has been widely used, and it can access and manage system resources and higher-level services anytime and anywhere. Its most important advantage is that cloud computing technology allows the company to minimize the cost of establishing the infrastructure upfront. Cloud storage is a major branch of cloud computing and has been widely used in various fields. However, cloud service providers for data users are not completely trustworthy. After uploading local data to cloud servers, users lose physical control of the data. Therefore, data location auditing is becoming one of the growing needs of users...

AI Technical Summary

Problems solved by technology

[0004] (1) The existing distributed positioning scheme only considers the improvement of accuracy. However, if a delay injection attack is performed on a malicious cloud server that outsources data based on economic motives, the existing positioning algorithm cannot detect such a Attackers; in academia, attacks against traditional targeting methods have achieved great success

[0005] (2) Although the existing location verification schemes can effectively detect potential malicious attackers, the premise is that users need to know the specific location of the data. However, the real problem is that based on security and privacy requirements, most cloud services provide The supplier does not give the precise data location in the service level agreement, so the data location verification scheme is often difficult to implement in actual situations

[0006] (3) The latest academic solution that combines integrity verification and data location technology, which downloads data blocks through distributed nodes, resulting in a large communication overhead

[0008] (1) The difficulty of the above problem is that the data owner cannot know the authenticity of the geographical location of the cloud server from the measured network parameters and the old technical solution has caused a lot of communication overhead

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