Hello,

2015-06-09 16:16 GMT+02:00 Josh Smeaton <josh.smea...@gmail.com>:

> You're referring to a "pepper" - a site wide secret that's supposed to be
> used, in some way, to further encrypt passwords. As far as I'm aware there
> are no algorithms available that take a pepper into consideration.
>

I'm also wary of implementing a mechanism that isn't considered a best
practice in the industry.

Pepper doesn't achieve anything that you couldn't do by changing the number
of rounds (or perhaps the salt length, but I'm not sure that makes sense).
Any additional code adds potential for implementation mistakes that could
introduce security issues.

As a consequence, I think there are more risks than benefits to this
proposal as it stands. I would change my mind if pepper countered a common
class of attacks, like salt countered rainbow tables.

-- 
Aymeric.

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