{"title":"DMix:去中心化的不可连接混合器","authors":"Fadi Barbàra, C. Schifanella","doi":"10.1109/BRAINS49436.2020.9223282","DOIUrl":null,"url":null,"abstract":"We present a protocol that lets participants operate a decentralized mixer to exchange coins in the Bitcoin blockchain. DMix does not need the election of any leader and respects both the unlinkability and the atomicity properties, so that there is no possibility to correlate addresses or lose funds using the protocol. We leverage the MuSig aggregate signatures. This aggregation scheme is based on the Schnorr signature scheme, a recent proposal for a ECDSA alternative, the current Bitcoin signature scheme. We also present an analysis of the method and mitigation of attacks.","PeriodicalId":315392,"journal":{"name":"2020 2nd Conference on Blockchain Research & Applications for Innovative Networks and Services (BRAINS)","volume":"267 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"DMix: decentralized mixer for unlinkability\",\"authors\":\"Fadi Barbàra, C. Schifanella\",\"doi\":\"10.1109/BRAINS49436.2020.9223282\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We present a protocol that lets participants operate a decentralized mixer to exchange coins in the Bitcoin blockchain. DMix does not need the election of any leader and respects both the unlinkability and the atomicity properties, so that there is no possibility to correlate addresses or lose funds using the protocol. We leverage the MuSig aggregate signatures. This aggregation scheme is based on the Schnorr signature scheme, a recent proposal for a ECDSA alternative, the current Bitcoin signature scheme. We also present an analysis of the method and mitigation of attacks.\",\"PeriodicalId\":315392,\"journal\":{\"name\":\"2020 2nd Conference on Blockchain Research & Applications for Innovative Networks and Services (BRAINS)\",\"volume\":\"267 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2020 2nd Conference on Blockchain Research & Applications for Innovative Networks and Services (BRAINS)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/BRAINS49436.2020.9223282\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 2nd Conference on Blockchain Research & Applications for Innovative Networks and Services (BRAINS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/BRAINS49436.2020.9223282","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
We present a protocol that lets participants operate a decentralized mixer to exchange coins in the Bitcoin blockchain. DMix does not need the election of any leader and respects both the unlinkability and the atomicity properties, so that there is no possibility to correlate addresses or lose funds using the protocol. We leverage the MuSig aggregate signatures. This aggregation scheme is based on the Schnorr signature scheme, a recent proposal for a ECDSA alternative, the current Bitcoin signature scheme. We also present an analysis of the method and mitigation of attacks.