论文标题
ZLB：一个可以容忍勾结多数的区块链
ZLB: A Blockchain to Tolerate Colluding Majorities
论文作者
论文摘要
在一般环境中，如果对手控制系统的三分之一，则不能解决共识。然而，尽管有少数系统的对手，但区块链参与者通常会“最终”达成共识。超越此$ \ frac {1} {3} $ cap是通过容忍瞬态分歧而成为可能的，其中不同的参与者为同一索引选择不同的块，然后最终同意选择同一块。到目前为止，没有一个区块链可以容忍控制大多数系统的攻击者。 在本文中，我们介绍了零损坏区块链（ZLB），这是第一个可容忍控制系统超过一半的对手的区块链。 ZLB是一个开放区的区块链，结合了拜占庭协议的最新理论进步，以排除不可否认的欺骗性复制品。逐渐将欺骗性副本的一部分低于$ \ frac {1} {3} $，并达成共识。地理分布的实验表明，ZLB的表现优于HotStuff，几乎与无法忍受$ N/3 $故障的可伸缩红色腹部区块链一样快。
In the general setting, consensus cannot be solved if an adversary controls a third of the system. Yet, blockchain participants typically reach consensus "eventually" despite an adversary controlling a minority of the system. Exceeding this $\frac{1}{3}$ cap is made possible by tolerating transient disagreements, where distinct participants select distinct blocks for the same index, before eventually agreeing to select the same block. Until now, no blockchain could tolerate an attacker controlling a majority of the system. In this paper, we present Zero-Loss Blockchain (ZLB), the first blockchain that tolerates an adversary controlling more than half of the system. ZLB is an open blockchain that combines recent theoretical advances in accountable Byzantine agreement to exclude undeniably deceitful replicas. progressively reduces the portion of deceitful replicas below $\frac{1}{3}$, and reaches consensus. Geo-distributed experiments show that ZLB outperforms HotStuff and is almost as fast as the scalable Red Belly Blockchain that cannot tolerate $n/3$ faults.
