Published: 26 Oct 2018 › Updated: 26 Oct 2018![[Blockchain] 一张图带你读懂自私挖矿和33%/25%攻击](https://i.ecency.com/p/C3TZR1g81UNaPs7vzNXHueW5ZM76DSHWEY7onmfLxcK2iPTpwksDez8RBxeUjMtL3NJa81Q3X9GdfrKRt7cUVX7VG3Le9EfS6pKC3ZnaF46DKAXeUiyiAdt?format=match&mode=fit&height=377)
[Blockchain] 一张图带你读懂自私挖矿和33%/25%攻击
Majority is NOT enough
康奈尔大学计算机系的2名研究生提出51%诚实算力并不能保障比特币网络的安全(论文), 存在一种自私挖矿的行为, 其有效攻击所付出的算力分别是33%和25%。
一张图读懂自私挖矿的33%/25%攻击
影响
自私挖矿威胁是采用类比特币POW共识机制的公链都需要考虑的问题。
虽然论文所述攻击条件比较严苛, 但在矿池/小算力公链上却可以达到实施条件。
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