Mixcoin: Anonymity for Bitcoin with Accountable Mixes

被引:244
作者
Bonneau, Joseph [1 ]
Narayanan, Arvind [1 ]
Miller, Andrew [2 ]
Clark, Jeremy [3 ]
Kroll, Joshua A. [1 ]
Felten, Edward W. [1 ]
机构
[1] Princeton Univ, Princeton, NJ 08544 USA
[2] Univ Maryland, College Pk, MD 20742 USA
[3] Concordia Univ, Montreal, PQ, Canada
来源
FINANCIAL CRYPTOGRAPHY AND DATA SECURITY, FC 2014 | 2014年 / 8437卷
关键词
D O I
10.1007/978-3-662-45472-5_31
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
We propose Mixcoin, a protocol to facilitate anonymous payments in Bitcoin and similar cryptocurrencies. We build on the emergent phenomenon of currency mixes, adding an accountability mechanism to expose theft. We demonstrate that incentives of mixes and clients can be aligned to ensure that rational mixes will not steal. Our scheme is efficient and fully compatible with Bitcoin. Against a passive attacker, our scheme provides an anonymity set of all other users mixing coins contemporaneously. This is an interesting new property with no clear analog in better-studied communication mixes. Against active attackers our scheme offers similar anonymity to traditional communication mixes.
引用
收藏
页码:486 / 504
页数:19
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