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PoW consensus protocol security assessment method based on hierarchical quantitative model

A technology of security assessment and quantitative model, which is applied in the direction of secure communication devices, digital transmission systems, electrical components, etc., can solve the problems of no blockchain system evaluation, PoW consensus algorithm single-angle consideration of the blockchain system, etc., to improve the objective performance, avoid evaluation bias, and improve evaluation efficiency

Pending Publication Date: 2021-11-19
SOUTHEAST UNIV
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Problems solved by technology

[0004] Currently, the security research on the PoW consensus algorithm often only considers the security of the blockchain system from a single perspective, such as the impact of network delay on the security of the blockchain system, the impact of increased block intervals and block size changes on the blockchain system. The impact of security, did not evaluate the blockchain system from all aspects and multiple angles

Method used

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  • PoW consensus protocol security assessment method based on hierarchical quantitative model
  • PoW consensus protocol security assessment method based on hierarchical quantitative model
  • PoW consensus protocol security assessment method based on hierarchical quantitative model

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Embodiment 1

[0036] Embodiment 1: see figure 1 , a method for evaluating the security of a PoW consensus protocol based on a hierarchical quantization model, the method comprising the following steps:

[0037] Step 1: Determine the PoW consensus security assessment dimensions, which include: chain quality, consensus efficiency and attack resistance;

[0038] Step 2: Determine the specific indicators to measure the security of PoW consensus according to each dimension, including:

[0039] The chain quality is measured by the proportion of honest blocks in the main chain in the current blockchain system;

[0040] Consensus efficiency is measured by calculating the time required for the current blockchain system to reach consensus;

[0041] The ability to resist attacks is measured by the success rate of the blockchain system against double-spending attacks and selfish mining attacks;

[0042] Step 3. According to the specific indicators, determine the influencing factors of each indicator...

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Abstract

The invention relates to a PoW consensus protocol security assessment method based on a hierarchical quantitative model, comprising the following steps: measuring PoW consensus algorithm security through multiple dimensions, selecting proper indexes, determining influence factors of each index, obtaining each influence factor through an ns3 network simulator, and constructing a consensus security assessment hierarchical model, wherein each layer in the hierarchical model is an index or an influence factor, performing standardization processing on the index, determining the weight of the lower-layer index to the upper-layer index, and finally calculating a final safety evaluation value through a weighted summation method. According to the scheme, the security condition of the block chain system is reflected through the change of the selected key index, and the evaluation efficiency is improved. For example, the security change of the block chain system can be perceived more quickly through the change of indexes such as the number of waste blocks and the number of arc blocks in the chain quality dimension.

Description

technical field [0001] The invention relates to an evaluation method, in particular to a method for evaluating the security of a PoW consensus protocol based on a hierarchical quantitative model, and belongs to the technical field of security evaluation of consensus algorithms in block chains. Background technique [0002] Blockchain technology is essentially a point-to-point distributed database, which maintains the consistency of the blockchain system through consensus algorithms, realizes trust between different nodes and calculates the corresponding rights and interests of each node. The PoW consensus algorithm is a proof-of-work consensus mechanism and one of the core technologies of Bitcoin. The proof-of-work mechanism is the proof of the workload, which is a necessary condition to be met when generating a new block. Each node obtains the right to bookkeeping by calculating a hash with a random number, and the ability to calculate the correct numerical solution to gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L29/06
CPCH04L41/145H04L63/1441H04L63/20H04L9/50
Inventor 李必信田嘉美包骐豪
Owner SOUTHEAST UNIV
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