What does this mean in practice?
E.g. If the user is super-paranoid, or has super-secret encrypted info, they should double the size of their diceware passphrase due to the threat of PQCrypto and halving of the key size because of Grover’s algorithm?
So, if they assume quantum computers exist already or will soon, create a 14 word passphrase, assuming the entropy is halved to around a 7 word passphrase?
I don’t care about the math, just the practical application. (we can footnote the crypto guy)
If that is true, we add another column to that table e.g. “Post-quantum Security”, showing “Yes”, “No” etc based on assumed halving of key size.