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本帖最后由 Hetbert 于 2018-1-16 21:00 编辑
Clairelan 发表于 2018-1-16 20:36 
可悲的是,全世界最快的计算机(目前世界最强的超算神威·太湖之光是每秒9.3亿亿次)
不过相当于54个量子 ...
姐,真心不是那么算的。
请读这篇康奈尔大学的论文:
https://arxiv.org/abs/1710.10377
如果您没时间读,我引用一下奶大的结论:
“By our most optimistic estimates, as early as 2027 a quantum computer could exist that can break the elliptic curve signature scheme in less than 10 minutes, the block time used in bitcoin,” the paper said.
The extreme speed of current specialized ASIC hardware for performing the hashcash PoW, coupled with much slower projected gate speeds for current quantum architectures, essentially negates this quadratic speedup, at the current difficulty level, giving quantum computers no advantage. Future improvements to quantum technology allowing gate speeds up to 100GHz could allow quantum computers to solve the PoW about 100 times faster than current technology.
by 2028, the researchers reckon, you'd need a 4.4 million qubit machine to achieve 13.8 gigahashes per second: “This is more than one thousand times slower than off the shelf ASIC devices which achieve hash rates of 14TH/s”.
根据美国,澳洲,法国的最前沿专家的最乐观的估计,还要十年,量子计算机才有很小很小的可能,破解比特币的椭圆曲线加密。
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