可监管的比特币隐私保护混淆服务

doi:10.11959/j.issn.2096-109x.2019037

Abstract

Abstract:

With the deepening of research on Bitcoin privacy protection,Bitcoin,a new type of digital currency,has become more difficult to regulate.A Bitcoin privacy protection confusion scheme with regulatory RBmix is proposed for this problem.The model of RBmix uses a fair blind signature algorithm and introduces trusted third parties with regulatory,anonymity,scalability,Bitcoin compatibility,and anti-DoS aggression.Experimental results show that the RBmix protocol has good scalability and execution efficiency.

Key words: Bitcoin, privacy-preserving, regulatory, fair blind signature

CLC Number:

TP311

Zijian BAO,Qinghao WANG,Yongxin ZHANG,Bin WANG,Ning LU,Wenbo SHI. Regulatory Bitcoin privacy-preserving mixing service[J]. Chinese Journal of Network and Information Security, 2019, 5(4): 40-51.

Figures/Tables 7

References 32

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参数	含义
A	Alice的真实身份
A′	Alice的隐藏身份,即Alice使用Tor匿名网络隐藏身份
K_in	A的支付地址,可能已经被链接到自身的真实身份
K_out	A期望的交付地址,一般由用户新创建的比特币地址
K_esc	M接受A转钱的地址,对于每个用户都生成一个对应的唯一地址
K_esc′	M往地址K_out转钱的地址
A_C	盲签名中的盲化函数
A_C′	盲签名中的去盲函数
K_out]A_C	使用盲化函数将K_out进行盲化
x	混淆服务商存储到可信第三方的比特币金额
p	支付的混淆服务费用的比率
v	混淆的单位金额
w	比特币系统中的区块确认个数

方案	可追责性	可扩展性	架构	比特币兼容	抗DoS攻击	可监管性
RBmix	√	√	服务	√	√	√
Coinjoin	-	×	服务	√	×	×
Coinswap	-	×	服务	√	√	×
Mixcoin	√	√	服务	√	√	×
Blindcoin	√	√	服务	√	√	×
Zerocoin	-	√	服务	×	√	×

Regulatory Bitcoin privacy-preserving mixing service

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