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Re:Quantum Computers Are the Future Nukes of the IT World by archgoon on Friday September 21, 2018 @01:53PM (#18041430)
To our knowledge, it cannot. It would be extremely surprising if it could.

However, it can reduce the difficulty of a generic brute force search

https://en.wikipedia.org/wiki/Grover%27s_algorithm

But it only reduces the effective key length by 2. Which, although amazing, has a fairly straightforward response. Double your key length beyond what was previously viewed as 'intractable'.

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