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A cloud storage data integrity verification method based on bilinear pair accumulator

A data integrity and bilinear pairing technology, which is applied in the field of computer science, can solve the problems of data block data integrity verification and cloud storage data integrity verification, and achieve the effect of reducing verification overhead and resisting label forgery

Active Publication Date: 2021-11-16
NANJING UNIV OF INFORMATION SCI & TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0006] Purpose of the invention: Aiming at the problem that the existing verifier cannot perform unlimited data integrity verification on data blocks, and cannot verify the integrity of all cloud storage data at one time, the present invention proposes a method based on bilinear pairwise accumulation Cloud Storage Data Integrity Verification Method for Server

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  • A cloud storage data integrity verification method based on bilinear pair accumulator
  • A cloud storage data integrity verification method based on bilinear pair accumulator
  • A cloud storage data integrity verification method based on bilinear pair accumulator

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Embodiment 1

[0071] This embodiment provides a cloud storage data integrity verification method based on bilinear paired accumulators, the verification method can perform an unlimited number of data integrity verifications on the entire data set, while keeping the computational overhead at an acceptable level , and the verification method supports dynamic operations by marking the index data structure table.

[0072] No matter what kind of cloud storage service, there are three role participants, namely: the cloud storage provider CSP that stores the data sent by the data owner C; The data owner who saves a large amount of key data to bear the risk C, due to the importance of data transmission, requires 100% data integrity and has a guaranteed verification party.

[0073] In this embodiment, the cloud storage data integrity verification method specifically includes the following steps:

[0074] Step S1: According to the bilinear map, select two groups G and G with prime order p T , where...

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Abstract

The invention discloses a method for verifying the integrity of cloud storage data based on a bilinear pair accumulator, which includes the following steps: S1: According to the bilinear mapping, two groups G and G with the same prime number order are selected T , to generate a pair e; S2: Generate two symmetric keys K through the AES key generation algorithm H and K E ; S3: The data owner according to the symmetric key K E Generate an encrypted data block for the data to be sent; S4: The data owner stores the auxiliary value F in the verifier by encrypting the data block and pairing e; S5: The cloud storage provider sends a certificate to the verifier through the verification value; S6: The verifier verifies the cloud storage data according to the proof and the auxiliary value F. The invention supports dynamic data, and can resist label forgery, data deletion, replacement, replay and leakage attacks. At the same time, Fang Ming can perform integrity verification on all cloud storage data blocks at one time, and the verifier can perform unlimited data integrity verification on cloud storage data blocks.

Description

technical field [0001] The invention relates to the technical field of computer science, in particular to a method for verifying the integrity of cloud storage data based on bilinear pair accumulators. Background technique [0002] In cloud storage, data owners outsource their own data to cloud storage servers, which can save a lot of storage space for data owners, and also reduce the burden of daily management of these data by data owners. However, data owners are concerned that uploaded data may be modified or deleted without their knowledge or permission. So to solve this problem, verifiers must perform regular data integrity checks to verify ownership of data and detect any unauthorized modification. Technically, there are two ways to perform such sanity checks: [0003] Deterministic approach: verifiers are required to be able to check all data blocks at once, and verify their integrity, thereby guaranteeing 100% data integrity and ownership. [0004] Probabilistic a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/08H04L9/30H04L9/06
CPCH04L9/0631H04L9/3073H04L63/123H04L67/1097
Inventor 任勇军祁健刘业鹏冷彦朱福建高语秋
Owner NANJING UNIV OF INFORMATION SCI & TECH
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