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Group member extension method, device and equipment based on block chain and medium

An expansion method, blockchain technology, applied to secure communication devices, key distribution, can solve problems such as the inability of nodes in the group to reach a consensus

Active Publication Date: 2018-10-12
吕晟珉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the blockchain mechanism, the online status of nodes is constantly changing according to the actual situation, so the number of active online nodes may decrease over time,

Method used

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  • Group member extension method, device and equipment based on block chain and medium
  • Group member extension method, device and equipment based on block chain and medium
  • Group member extension method, device and equipment based on block chain and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] figure 1It is a flow chart of a blockchain-based group member expansion method provided by an embodiment of the present invention. Please refer to figure 1 , the specific steps of the blockchain-based group member extension method include:

[0046] Step S10: Select the original node group including blockchain nodes.

[0047] Wherein, the original node group has a first threshold value t, each node in the original node group has a first group of secrets, and the first group of secrets is constant.

[0048] Step S11: When a new node is added to the original node group, obtain the original nodes of the second threshold value r in the original node group, so as to control each original node to generate their own secret polynomial; wherein, the second threshold value r is greater than Or equal to the first threshold value t, and less than the total number of nodes in the original node group, the highest power of the secret polynomial is t-1 times, and the constant term is...

Embodiment 2

[0060] On the basis of the above embodiments, the present invention also provides the following series of preferred implementation manners.

[0061] figure 2 It is a flowchart of the steps of generating the first group of secrets in the original node group provided by the embodiment of the present invention.

[0062] Such as figure 2 As shown, as a preferred implementation, the step of generating the first group of secrets in the original node group includes:

[0063] Step S20: Control each blockchain node in the original node group to generate its own initial secret.

[0064] It should be noted that the original node group in this step is a group formed by artificially dividing the nodes in the blockchain network according to specific needs, and the nodes in the group are artificially preset blockchain nodes. The purpose of each block chain node in the original node group to generate the initial secret is to participate in the generation of the corresponding key of the o...

Embodiment 3

[0092] The embodiment of the block chain-based group member expansion method has been described in detail above, and the present invention also provides a block chain-based group member expansion device corresponding to the method, because the embodiment of the device part is the same as The embodiments of the method part correspond to each other, so for the embodiments of the device part, please refer to the description of the embodiments of the method part, and details will not be repeated here.

[0093] image 3 A block chain-based group member expansion device structure diagram provided by the embodiment of the present invention. The block chain-based group member expansion device provided by the embodiment of the present invention includes:

[0094] The selection module 10 is used to select an original node group containing blockchain nodes; wherein, the original node group has a first threshold value t, each node in the original node group has a first group of secrets, ...

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Abstract

The invention discloses a group member extension method, device and equipment based on a block chain and a medium. According to the method, the second group of secrets are results generated by all block chain nodes in the group through jointly participating in authentication, when a new node is added to the node group, the first group of secrets of the new node can be generated by carrying out corresponding operation on the second group of secrets through each original node, so that the new node can participate in generation of a consensus secret key of the node group through the first group of secret keys, and the rest of nodes in the node group do not need to change the own first group of secrets, so that the usability of the new node added to the node group is guaranteed, and thus the number of available nodes in the node group and the reliability of generating the consensus secret key can be correspondingly ensured. In addition, the invention further provides the group member extension device and equipment based on the block chain and the medium, which have the beneficial effects.

Description

technical field [0001] The present invention relates to the field of block chains, in particular to a block chain-based group member expansion method, device, equipment and medium. Background technique [0002] With the rise of digital currency, blockchain technology as the underlying support has attracted widespread attention from the industry. Blockchain technology, with its advantages of decentralization, credible and traceable information, has caused the industry to explore the practical application of blockchain. [0003] In the underlying technology of the blockchain, a large number of cryptographic algorithms are used, such as the cryptographic algorithms for keeping the communication between network nodes confidential, ensuring that the message is not tampered with in the process of transmission, and the receiver confirms that the source of the message is correct. The key is the result generated by a cryptographic algorithm and is used for data encryption or digital...

Claims

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Application Information

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IPC IPC(8): H04L9/08
CPCH04L9/0861
Inventor 吕晟珉胡红钢吴轶群
Owner 吕晟珉
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