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Consortium Chain Construction Method Based on Discrete Logarithm

A discrete logarithm and construction method technology, applied in the field of network security, can solve problems such as difficult calculations, huge calculation overhead, and reduced system computing performance, and achieve the goals of improving security, efficient verification and confirmation, and efficient block recording and confirmation Effect

Active Publication Date: 2020-09-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

However, simply introducing the discrete logarithm problem is easy to reduce the computational efficiency of the entire system
If all nodes in the entire network are allowed to participate in the calculation of discrete logarithms fairly, this will inevitably cause excessive computational overhead (here, due to the calculation of discrete logarithms on high-order groups for current devices, it is difficult to calculate)

Method used

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  • Consortium Chain Construction Method Based on Discrete Logarithm
  • Consortium Chain Construction Method Based on Discrete Logarithm

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Embodiment Construction

[0026] Such as figure 1 and figure 2 The method for constructing the consortium chain based on discrete logarithm in the present invention includes:

[0027] A. Initializing the trapdoor discrete logarithm group: According to the security parameter λ, a q-order multiplicative group G is generated, the generator of the multiplicative group G is g, and a trapdoor Td for calculating the discrete logarithm is generated to form a discrete The parameters corresponding to the logarithmic group (G, q, g, Td). by g α =h calculates the solution α of the discrete logarithm, where h∈G is an element on the multiplicative group G.

[0028] B. Initialize the consortium chain: generate the initial block (Genesis Block) of the consortium chain, and publicize the parameters P=(G, q, g, H 1 ) into the initial block, where the first hash function H 1 For: H 1 : {0, 1} * → G, then designate a batch of alliance nodes, and send the trapdoor Td to each alliance node.

[0029]C. Block verific...

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Abstract

The present invention relates to a method for constructing a consortium chain based on discrete logarithms, including: A. Initializing the trapdoor discrete logarithm group according to security parameters; Each alliance node; C. Each alliance node verifies each generated block including its own information and discrete logarithm puzzle; D. Each alliance node packages and verifies the transaction information generated in the current network, and Record it in the block verified by step C, then generate a discrete logarithm puzzle, and use the trapdoor to solve the discrete logarithm puzzle of the previous block, record the result of the solution in the block, and use Validate the block on other nodes. The invention greatly improves the reading and writing efficiency of the consortium chain, and at the same time effectively improves the security and flexibility of the consortium chain in operation.

Description

technical field [0001] The invention relates to the field of network security, in particular to a method for constructing a discrete logarithm-based consortium chain. Background technique [0002] The concept of blockchain was first formally proposed in 2008, and it can be used to realize public ledgers and unchangeable transaction records in a decentralized environment. Blockchain can be roughly divided into three categories: Public Blockchain, Private Blockchain and Consortium Blockchain. [0003] Among them, the public chain has the highest degree of decentralization. This kind of public blockchain represented by Bitcoin and Ethereum is not controlled by a third-party organization. Everyone in the world can read the data records on the chain, participate in transactions, and compete for the accounting rights of new blocks. Program developers have no right to interfere with users, and each participant (ie node) is free to join and exit the network, and perform relevant o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L63/1441H04L63/20
Inventor 张小松黄可牛伟纳杨涵麟肖修卓卢臻
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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