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A blockchain-based file storage and access method

A technology for file storage and access methods, which is applied in the blockchain field and can solve problems such as leaked information and tampering

Active Publication Date: 2021-08-31
深圳市乾数科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In human socialization activities, regarding the storage, access, and confidentiality of important files, a centralized management mechanism is usually adopted. For example, administrators are granted file management permissions such as adding, deleting, reading, and writing, and the files are unified by file administrators. Manage files to ensure the efficiency of file management. However, this centralized management method that authorizes administrators to manage files has potential risks, such as risks such as tampering and information disclosure.

Method used

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  • A blockchain-based file storage and access method
  • A blockchain-based file storage and access method
  • A blockchain-based file storage and access method

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Embodiment Construction

[0068] A block chain-based file storage and access method proposed by the present invention comprises the following steps:

[0069] Step S1: file division, first define the set of sub-file division methods, the division method used and the control parameters, divide the target file into several sub-files, and each sub-file corresponds to an authorized user;

[0070] Step S2: File encrypted signature, the authorized user encrypts and signs the corresponding sub-file and sends it to the file management module, the file management module performs signature verification, and decides whether the verification is passed;

[0071] Step S3: file information is uploaded to the chain, and the file management module creates a blockchain smart contract, uploads the encrypted sub-files and encrypted sub-file related information that have passed the verification in step S2, stores them in the blockchain smart contract, and stores them in the blockchain smart contract. All encrypted file encr...

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Abstract

The invention discloses a method and system for file storage and access based on blockchain, including file division, file encrypted signature, file information chaining, file access authorization, file reconstruction and sharing, and finally the reconstruction target file is encrypted and sent to the access user Perform associated read or write operations. The present invention adopts separate file storage and a file management mechanism based on blockchain smart contracts. The file access authority management module utilizes the main characteristics of blockchain such as openness, transparency, and non-tamperability, which effectively enhances the security and traceability of file access. sex. By dividing the file into multiple sub-files and encrypting them with different private keys, it is possible to prevent unilateral manipulation of the file. At the same time, the information related to sub-files is encrypted and stored in the blockchain and cannot be tampered with, which greatly enhances the security of file information.

Description

technical field [0001] The invention relates to the technical field of block chains, in particular to a file storage and access method based on block chains. Background technique [0002] In human socialization activities, regarding the storage, access, and confidentiality of important files, a centralized management mechanism is usually adopted. For example, administrators are granted file management permissions such as adding, deleting, reading, and writing, and the files are unified by file administrators. Manage files to ensure the efficiency of file management. However, this centralized management method that authorizes administrators to manage files has potential risks, such as risks such as tampering and information disclosure. [0003] Blockchain technology is a distributed ledger system, including a series of technologies such as encryption and decryption, consensus mechanism, peer-to-peer communication network, and chain storage. It has the characteristics of decen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/08H04L9/32H04L9/30H04L9/06G06F21/60G06F21/64
CPCH04L63/10H04L63/0428H04L67/1097H04L9/3247H04L9/3066H04L9/0643G06F21/602G06F21/604G06F21/64G06F2221/2141G06F2221/2107H04L9/50
Inventor 杨忠勋
Owner 深圳市乾数科技有限公司
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