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Blockchain editing method based on distributed key management

A key management and blockchain technology, applied in key distribution, can solve the problems of utilization, blockchain cannot run normally, and malicious nodes are easily leaked, so as to ensure the security of keys.

Inactive Publication Date: 2021-03-02
HUNAN TIAN HE GUO YUN TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the key is lost or leaked, it means that the entire blockchain cannot function normally
Traditional key management, such as physical means, secure channel transmission, key agreement algorithm, etc., are all centralized management solutions, and there are risks such as easy leakage and use by malicious nodes

Method used

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  • Blockchain editing method based on distributed key management
  • Blockchain editing method based on distributed key management
  • Blockchain editing method based on distributed key management

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] see figure 1 , the present invention provides a block chain editing method based on distributed key management, including:

[0046] S1. Construct a block chain and create a block, and add chameleon hash to adjust the random number in the block; in the block chain, each block includes two parts: block header and block body, and the block header includes The hash value of a block header, Merkle tree root, time stamp and other information, the block body includes transaction header, chameleon hash random number ...

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Abstract

The invention provides a blockchain editing method based on distributed key management, which comprises the following steps: generating a key through a chameleon hash function based on identity information, and then dividing the secret into a plurality of sub-secrets through a threshold segmentation scheme; deploying an intelligent contract at the management node, wherein the intelligent contractis responsible for calculation operation of the secret key; enabling the management node to broadcast a block modification request to other nodes; enabling the other nodes to return the sub-keys to the management node after receiving the request; enabling the management node to perform asymmetric decryption on the received sub-key and recovers the complete key; enabling the management node to callan intelligent contract, and enabling the intelligent contract to perform random number calculation according to the information of the management node; and enabling the supervision node to completeblock editing according to the calculated random number and broadcast an edited result to other nodes. Compared with the prior art, the blockchain editing method based on distributed key management provided by the invention is high in key distribution management and security and easy to implement.

Description

technical field [0001] The invention relates to the technical field of block chains, in particular to a method for editing block chains based on distributed key management. Background technique [0002] Blockchain technology first appeared in the Bitcoin open source project. It is essentially a decentralized distributed ledger technology with specific features such as tamper-proof and traceable. Blockchain technology can provide a credible transaction environment without the participation of third-party intermediaries. Compared with traditional technologies, it can reduce manpower, time, and maintenance costs. In recent years, the application scenarios of blockchain technology have been continuously expanded. From finance, product traceability, government affairs and people's livelihood, electronic certificate storage to digital identity and supply chain collaboration, the deepening and diversification of scenarios has continued to deepen. [0003] The non-tamperable featur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06G06Q40/04H04L9/06H04L9/08H04L9/32H04L29/08
CPCH04L63/0442H04L9/0643H04L63/06G06Q40/04H04L9/3236H04L9/0869H04L67/10H04L67/1097H04L9/50
Inventor 陈强谭林毛洪亮苏沐冉吴震杨征
Owner HUNAN TIAN HE GUO YUN TECH CO LTD
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