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Data fingerprint generation method and device based on block chain and storage medium

A data fingerprint and data storage technology, applied in the blockchain field, can solve problems such as hash algorithm collisions and conflicts, and achieve the effect of strong collision resistance

Pending Publication Date: 2022-08-09
INDUSTRIAL AND COMMERCIAL BANK OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This application provides a blockchain-based data fingerprint generation method, device, and storage medium to solve the problem of risk loopholes in hash algorithms that generate collisions in related technologies

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  • Data fingerprint generation method and device based on block chain and storage medium
  • Data fingerprint generation method and device based on block chain and storage medium
  • Data fingerprint generation method and device based on block chain and storage medium

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Embodiment Construction

[0028] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0029] In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only The embodiments are part of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0030] It shou...

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PUM

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Abstract

The invention discloses a data fingerprint generation method and device based on a block chain and a storage medium. The invention relates to the technical field of blockchains. The method comprises the steps that a data file is called from a data storage system through a user side, and the data storage system is a data storage system in a block chain network; to-be-coded data in the data file is obtained, the security level of the to-be-coded data is determined, and the security level is used for representing the confidentiality degree of the to-be-coded data in the current security scene; and determining a Hash algorithm corresponding to the to-be-coded data under the security level, and performing multiple Hash operation on the to-be-coded data according to the Hash algorithm to obtain a digital fingerprint. Through the method and the device, the problem of risk vulnerabilities of collision conflicts existing in a hash algorithm in related technologies is solved.

Description

technical field [0001] The present application relates to the field of blockchain technology, and in particular, to a method, device and storage medium for generating data fingerprints based on blockchain. Background technique [0002] Hash algorithm is an algorithm in the field of blockchain. Hash algorithm is widely used to construct blocks and confirm the integrity of transactions in the blockchain. With the development of the times, hash algorithms have also been found to have risk vulnerabilities of the inevitability of collisions. For example, the MD5 and SHA1 algorithms in hash algorithms have recently been proven to be insecure. [0003] Since the length of the string output by the hash function corresponding to the hash algorithm is certain, different inputs may produce the same hash value. If an attacker can cause the hash function to collide on purpose, he can disguise the malicious file or data as the correct hash value and store it on the blockchain, and pass t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/62G06F21/60G06F21/78
CPCG06F21/6218G06F21/602G06F21/78G06F2221/2141G06F2221/2113
Inventor 罗伟彬苏恒罗强王玲芳
Owner INDUSTRIAL AND COMMERCIAL BANK OF CHINA