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by cyphar 3242 days ago
> I wasn't familiar with the one that involves brute-forcing it on every login attempt, and I've never heard of it being used in production on a real site (whereas a global shared secret seems to be reasonably common).

In case you're interested, that is the same scheme as the one used by JoeyH's keysafe[1].

[1]: http://joeyh.name/code/keysafe/