Research And Application Of Anonymous Currency Payment And Revocable Crowdsourcing Distribution Scheme Based On Blockchain

Due to its decentralized,tamper-proof,open and transparent characteristics,Blockchain technology plays an important role in scenarios such as anonymous currency and crowdsourcing allocation.However,there are still some problems with blockchainbased anonymous currencies and crowdsourcing allocation schemes.For example,anonymous currencies require a lot of time to verify transactions,resulting in low transaction confirmation efficiency.The crowdsourced data stored on the blockchain will easily lead to excessive overhead and low data transmission efficiency.The pseudo-anonymity of blockchain can lead to privacy leakage problems of anonymous currencies and crowdsourcing schemes.In response to the above problems,this paper respectively proposed a blockchain-based anonymous currency payment scheme and a blockchain-based refundable crowdsourcing allocation scheme,and designed a blockchain-based crowdsourcing allocation system for Internet of vehicles data.The specific content is as follows.(1)A blockchain-based anonymous currency payment scheme is proposed to solve the problems of low transaction efficiency and privacy leakage in anonymous currency.The threshold proxy re-signature technology is used to improve the speed of transaction confirmation.Diffie-Hellman key negotiation technique is used to ensure the anonymity of capital flow and protect the privacy of transactions.Compared with similar schemes,this scheme has higher security.(2)A blockchain-based revocable crowdsourcing allocation scheme is proposed to address the issues of privacy leakage,low efficiency and high blockchain overhead in blockchain-based crowdsourcing allocation schemes.By introducing proxy re-signature technology,the privacy of worker identity is protected.Attribute-based encryption technology is used to ensure the secure and complete transmission of data on the blockchain.A distributed file system is utilized to reduce the storage overhead of the blockchain.Edge computing technology is adopted to improve the efficiency of attribute ciphertext decryption.Compared with similar schemes,this scheme has higher efficiency and security.(3)Aiming at the problems of privacy leakage,low efficiency and low security in the Internet of vehicles environment,a blockchain-based crowdsourcing data distribution system for Internet of vehicles was designed.Using crowdsourcing to share and verify data,improve the efficiency and accuracy of data transmission.Introduce blockchain technology to ensure data transparency and integrity.Attribute-based encryption algorithm is adopted to ensure the safe transmission of Internet of vehicles data.The proxy re-signature mechanism is used to realize the anonymity of vehicle identity privacy during transaction payment.The simulation results show that the system can run safely and efficiently.