On Thu, 28 Jan 2010 17:53:30 -0500
Roger <[email protected]> wrote:

> >
> > The point of slowing down the algorithm is to protect against
> > off-line attack where an attacker has gained access to a copy of
> > master.passwd.
> 
> When say "off-line attack" do you refer to the attacker running a
> brute force attack on his/her machine?

Yes

> I'm assuming that by using a slow algorithm the attacker is forced to
> use the same slow algorithm to check the passwords?

Hopefully

> > Any hashing has to be done when the password is set, so it's fixed
> > thereafter.
> 

The thread is about password hashing, which is not a mechanism to
slow-down and back-off login attempts.


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