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A blockchain-based multi-user communication key agreement method

A multi-user communication and key negotiation technology, applied to secure communication devices, user identity/authority verification, and key distribution, to achieve the effects of ensuring security and privacy, realizing verifiability, and expanding basic functions

Active Publication Date: 2021-10-08
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a multi-user communication key negotiation method based on blockchain, which aims to solve the problem of realizing communication key security negotiation based on distributed open channels in a multi-user environment. question

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  • A blockchain-based multi-user communication key agreement method
  • A blockchain-based multi-user communication key agreement method
  • A blockchain-based multi-user communication key agreement method

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Embodiment Construction

[0051] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0052] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the compo...

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Abstract

The present invention proposes a blockchain-based multi-user communication key negotiation method, including: generating public parameters and blockchain initial blocks; each user generates a pair of public keys and private keys according to the public parameters; key negotiation The initiator performs key negotiation based on the public keys of key negotiation participants and key negotiation listeners and generates communication key negotiation initial parameters; each key negotiation participant reads the communication key negotiation initial parameters from the blockchain, Calculate the respective response parameters; the key negotiation initiator reads the response parameters generated by all key negotiation participants from the blockchain, and calculates the first communication key; each key negotiation participant reads all the key negotiation participants from the blockchain The initial parameters of the communication key negotiation and the response parameters generated by other key negotiation participants are calculated to obtain the second communication key; each key negotiation listener reads the initial communication key negotiation parameters and all keys from the block chain The response parameters generated by the negotiating participants are calculated to obtain the third communication key.

Description

technical field [0001] The invention relates to the field of information security ciphers, in particular to a blockchain-based multi-user communication key agreement method. Background technique [0002] The key agreement technology allows multiple users to jointly execute an interactive protocol on an open channel, and finally obtain a shared communication key, which can be further used to encrypt and decrypt communication content, thereby realizing secure communication between multiple users . Based on this, it can be seen that key agreement technology is the basis for realizing multi-user secure communication. Since the Diffie-Hellman two-party key agreement protocol was proposed, a large number of two-party or multi-party key agreement protocols have been proposed so far, some of which need the help of a trusted third party, while others do not need a trusted third party. However, the current research results require all users to actively participate in the key negotia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/06H04L9/08H04L9/32
CPCH04L9/0643H04L9/0838H04L9/0869H04L9/3297
Inventor 王玉珏丁勇赵萌刘林刚王冰尧
Owner GUILIN UNIV OF ELECTRONIC TECH
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