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No, any hash will be crackable, it just depends on how fast.

A well designed authentication protocol shouldn't expose any hashes to be cracked in the first place.



Sure -- if you define the heat death of the universe as "how fast".


You can't guarantee that, and keep reasonable performance, if humans are generating the PSK


I agree, but you can certainly build a system where humans don't generate the key.


Then how do humans share said key?

QR codes and NFC tags etc. are nice, but not supported everywhere.




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