Block transmission-oriented trusted node selection optimization method in block chain network
A node selection and optimization method technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as normal communication congestion, reasonable block delay, node transmission confusion, etc., to reduce block transmission redundancy, fast calculated effect
Active Publication Date: 2021-09-28
上海洛意信息科技有限公司
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Problems solved by technology
While improving the transmission rate problem, security is also easily overlooked
If security issues are not taken into account, false nodes will not only send false block information, causing node transmission confusion, increasing communication congestion of normal nodes, causing great delays in the transmission of reasonable blocks, but also deliberately increasing fork for malicious nodes. The probability of blocks provides convenient access to
A typical example is Sybil attack. In a peer-to-peer network, nodes will maliciously increase redundant information by controlling some nodes based on their multiple identities, impacting the backup information of network nodes, thereby causing normal communication congestion and affecting Block verification speed between nodes
[0003] In the permissionless chain network, the transmission nodes are randomly selected for block transmission, and there are problems such as low node communication speed and insufficient security
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[0034] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0035] The trusted node selection model for block transmission in the block chain network designed by the present invention is as follows: figure 1 As shown, it means to classify the status of the node's receiving transmission block first, then calculate the node's comprehensive PR value, including the node's transmission rate PR value and trust PR value, and finally select the optimal node transmission block according to the node's comprehensive PR value. Treat the blockchain P2P network as an undirected graph G ( V, E ),in V represents a set of nodes, Represents the set of edges between nodes. in, N = |V| Indicates the number of nodes in the blockchain networ...
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The invention discloses a block-transmission-oriented trusted node selection optimization method in a block chain network. A block-transmission-oriented trusted node selection optimization model is provided in order to improve the security and transmission rate of block transmission in the block chain network. The model analyzes the influence of node distance and connectivity in block synchronization time, trust values are introduced into node behaviors (such as transmission and verification blocks), block reception transmission states of nodes are classified in order to reduce transmission redundancy and communication cost, and the model is designed in combination with node states. Based on the model, an improved PageRank(PR) algorithm is designed to calculate a node comprehensive PR value, and an optimal node set is selected according to the node comprehensive PR value. The method designed by the invention has advantages in block synchronization time, block transmission time and block transmission success rate.
Description
technical field [0001] The invention relates to a block transmission-oriented trusted node selection optimization method in a block chain network, and belongs to the field of node selection in block transmission. Background technique [0002] At present, in order to reduce the probability of blockchain forks, many scholars have reduced the verification time and introduced incentives to improve the participation of nodes from the consensus layer, and have also improved the network in terms of network transmission time, network communication cost, and network topology. Layer transport performance. In the block transfer problem, node selection is a key factor. The number of external connections in the blockchain network is 8 and the number of internal connection nodes reaches 125. Therefore, choosing different external connection nodes will make the block transfer process to the entire network faster. While improving the transmission rate problem, security is also easily over...
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IPC IPC(8): H04L29/08H04L12/26
CPCH04L67/1044H04L67/1048H04L43/0805
Inventor 张佩云束俊良刘梓杰蔡松健陈芳剑谢杰敏黄文君陈禹同张茂凯谢荣见
Owner 上海洛意信息科技有限公司