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Editable block chain system

A technology of blockchain and editing, applied in the field of blockchain to achieve the effect of ensuring security, improving security, and ensuring security

Active Publication Date: 2020-07-28
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The emergence of the DAO attack in Ethereum has made people see the threat of immutability

Method used

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Examples

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0026] The editable block chain system of this embodiment, such as figure 1 As shown, including the first chain and the second chain; the first chain and the second chain are connected through a common node; the first chain has an edit control smart contract; the common node has trapdoor fragments, and trapdoor fragments are used to synthesize trapdoors ; The common node is used to initiate editing behavior, synthesize trapdoors according to the trapdoor fragments, and verify the trapdoors through the editing control smart contract. Publish the target content and hash conflict value to the second chain; the nodes in the second chain verify the target content and hash conflict value, and replace the original content with the target content if the verification is ...

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Abstract

The invention discloses an editable block chain system, which comprises a first chain and a second chain, wherein the first chain and the second chain are connected through a common node; wherein thefirst chain has an editing control smart contract; wherein the common node is provided with a trap door fragment, and the trap door fragment is used for synthesizing a trap door; the common node is used for initiating an editing behavior, synthesizing a trap door according to the trap door fragment, verifying the trap door through the editing control smart contract, calculating a hash conflict value according to the original content, the original random number and the target content after verification is passed, publishing the target content and the hash conflict value to the second chain; andenabling a node in the second chain to verify the target content and the hash conflict value, and replaces the original content with the target content if the target content and the hash conflict value pass the verification. The system has the advantages that the requirement for data storage safety can be met, and the requirement for data modification under specific conditions can also be met.

Description

technical field [0001] The invention relates to the technical field of block chains, in particular to an editable block chain system. Background technique [0002] As a decentralized, tamper-proof, and traceable distributed ledger system, blockchain has been applied to all aspects of society. The core concept of the blockchain is to change the centralized bookkeeping method into a distributed ledger backed up by everyone, and to enhance the anti-tampering and security of the ledger through the supervision of everyone. However, the non-tamperable modification of the blockchain not only provides data security for the distributed ledger, but also poses a severe test for the management of the content on the blockchain. First of all, the massive growth of data in the blockchain has put forward huge requirements for storage, and secondly, illegal information such as pornography and violence appearing on the Bitcoin chain, as well as the phenomenon of money laundering and black ma...

Claims

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Application Information

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IPC IPC(8): G06F21/62G06F21/64
CPCG06F21/6227G06F21/64
Inventor 任炬陈琳韦娅徐旸张尧学
Owner CENT SOUTH UNIV
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