Seth Vidal wrote:
On Tue, 26 May 2009, Till Maas wrote:
On Tuesday 26 May 2009 15:50:49 Seth Vidal wrote:
I was changing some settings with my mobile phone company and in
order to
change my password they made me use what looks a lot like 2 factor auth:
something I know: my current password
something I have: my phone
I logged in with my current password - then they txt'd me a temporary
password which I had to type in to verify I was me.
Which got me to wondering - if most people have a mobile phone and/or
have
access to one - why couldn't we use that as the second factor for our
auth?
A problem with phones is, that they are typically not as secure as
hardware
tokens. Users can install custom software on them. Also the phone may be
compromised via bluetooth. It might be even possible to directly
access text
messages via bluetooth or maybe also wifi nowadays.
But that's the point of it being one factor of two factor auth...
Even if you compromise the txt msg you still don't have the component
that the user knows. You only have the component that the user HAS.
-sv
How about a token App for the iPhone? Download a certificate with seed
data for the algorithm.. and bobs your uncle.
-- bk
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