Research and Implementation of Bitcoin Transaction Simulation Intercept Technology Based on Eclipse Attack and Route Detour

The Bitcoin cryptocurrencies have some significant technical characteristics, such as account anonymity, anonymous transaction, decentralization, and non-freezing assets. As the underlying technology of encrypted digital currency, the blockchain network is a decentralized network established through a peer-to-peer approach which realizes decentralized transactions and value exchange. However, the blockchain networks are an open network structure where any light or full node can join the network and establish communication connections with neighboring nodes. This network broadcasting mechanism has both advantages and disadvantages. Malicious nodes suppress normal communication in the system by controlling the internal and external connections of normal nodes, and sends false communication information to normal nodes, achieving the goal of deceiving nodes. Therefore, we utilized the network broadcast mechanism characteristics of blockchain networks and the principle of eclipse attacks to design a transaction simulation interception technology framework for Bitcoin account nodes. In the experimental platform, the success rate of injecting malicious IP into the Bitcoin address group new table was 95.8%. Through dial test analysis, the success rate of simulating transaction interception experiments was 100%.