Protection method for block interception attacks in block chains based on mining behaviors
A blockchain and behavioral technology, applied in the blockchain field, can solve problems such as inability to effectively reduce malicious miners, inability to effectively detect malicious miners, and inability to detect and eliminate malicious miners in a timely manner
A blockchain and behavioral technology, applied in the blockchain field, can solve problems such as inability to effectively reduce malicious miners, inability to effectively detect malicious miners, and inability to detect and eliminate malicious miners in a timely manner
CN112333170APending Publication Date: 2021-02-05ZHEJIANG SHUREN COLLEGE ZHEJIANG SHUREN UNIV
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[0087] This embodiment discloses a protection method for block interception attacks in blockchain based on mining behavior, such as figure 1 As shown, it mainly includes the following steps:
[0088] Step 1): parameter initialization;
[0089] Initialize the number of miners N w and the number of mining pools N c , and initialize the following parameters: the number of errors, the number of offline times, the delay time and the threshold of the offline time Active time discrimination threshold ฯ, performance score update factor The number of cluster centers K, the maximum number of iterations T max , the current number of iterations step=0 and other parameters;
[0090] Step 2): The mine pool manager preprocesses the data reported by the miners;
[0091] The mine pool manager uses the box plot detection algorithm to clean and normalize the data reported by the miners. If an error value is found, it will be replaced by the average value of the normal value. Among them,...
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The invention relates to a protection method for block interception attacks in block chains based on mining behaviors, which comprises the following steps of: preprocessing miner data by adopting a box type diagram detection method, and proposing a reward and punishment mechanism and a credit value model comprising workload proof rewards and block mining failure punishment in combination with mining behaviors of miners; comprehensively evaluating the contribution degree of the miners and arousing enthusiasms of the miners to participate in mining; in order to comprehensively evaluate the credit rating of nodes, based on a Gaussian mixture model, considering the average sample posterior probability and sample similarity of each cluster and adopting a miner credit rating division algorithm for balancing the posterior probability and similarity to obtain the distribution situation of malicious miners in a mine pool in the first time; and giving reasonable income distribution weights; andfinally, representing formulas such as attack mine pool selection, effective computing power, mining cost and income through a mathematical formula, establishing an income model of each miner under the block interception attack, and distributing the income of the mine pool in combination with the credit rating of the miners.
Description
Technical field: [0001] The invention relates to the technical field of block chains, in particular to a protection method for block interception attacks in block chains based on mining behavior. Background technique: [0002] Since the release of Bitcoin in 2008, blockchain technology, which does not rely on central institutions, has developed rapidly and has begun to be applied to fields such as finance, the Internet of Things, and intelligent transportation. Among them, the blockchain application mainly realizes block consensus among different participants (miners) through a consensus algorithm based on proof of work (PoW). In the PoW consensus algorithm, miners complete block construction by solving hash-based probability calculation puzzles, thereby earning new currency or transaction fees. The greater the computing power of a miner, the greater the possibility of obtaining coin rewards and block bookkeeping rights. Considering factors such as computing power limitati...
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Patent Timeline
05 Feb 2021
Publication
CN112333170A
- IPC
- H04L29/06; H04L29/08; G06K9/62
- CPC
- H04L63/1408; H04L63/1416; H04L67/10; H04L9/50; G06F18/23
- Inventors
- ้ๅ่ฃ; ้ๆตฉ