Gavin Wood wrote an article in response to the questioning of the avalanche protocol: the avalanche protocol is neither secure nor scalable

7月28日,雪崩协议的一名成员收集了雪崩协议社区内部一些对波卡的质疑,发布在了波卡Riot官方群,具体质疑内容涉及波卡可扩展性、插槽机制以及跨链性能。 Polkadot联合创始人Gavin Wood针对此事回应称,雪崩协议所谓的子网安全性和波卡的共享安全性完全不是一回事。何谈性能上的比较。实际上,雪崩协议类似一个中心化的Cosmos,由选出来的重叠的验证人组充当了子网安全性。这将导致整个系统内各个链间的安全性有极大的不均。跨分片攻击是可行的,因为来自一个(低安全性)链的消息可以导致另一个(更安全的)子网上的状态迁移。这样一来整个网络的安全性就等同于安全性最差的那个链。 跟Cosmos的问题一样,任何试图设计一个中央区域以执行敏感逻辑的解决方案都会遇到可拓展性瓶颈,且会让一部分链劣化为状态转换无法信任的二等公民。不管程序在哪个链上执行,都有同等级的安全性保障,这才是一个可扩展的系统。 综上,雪崩协议并不安全,也不具备可扩展性。(Phala可信网络)
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