Re: Speaker verification in gdm

[Ben Ford <ben kalifornia com>]

Jean-Marc Valin wrote:

> Malcolm Tredinnick a écrit :
>
> > On Sun, May 20, 2001 at 11:55:30PM -0400, Jean-Marc Valin wrote:
> >
> > > I don't know PAM, but I suppose I'll need a couple non-standard things, like
> > > prompting (sending a wav?) the user and/or waiting for a certain key to be
> > > pressed before recording. I don't know PAM at all, so I don't know whether it
> > > would do the job.
> > This is exactly why you do want PAM. :-)
> >
> > The whole idea (warning: broad brush strokes, read the documentation and
> > the web for details) is that your Pluggable Authentication Module is
> > called for certain types of access (in this case gdm login). You do
> > whatever magic you need to work out whether the user is authorised or
> > not. That is really all the calling process cares about -- yes or no. So
> > all the stuff that is "special" to your sound authentication method
> > (which sounds pretty cool, btw) is encapsulated in the PAM.
>
> Would it be possible to do speaker _identification_? By that I mean that you say
> something and the system recognizes _who_ you are and logs you in (or say that
> you're no in the list of users).
>
> 	Jean-Marc
You can do anything you want.  All PAM does is invoke a module which 
returns 'yes' or 'no'.  You code the module and it can do anything you 
want.  You could authenticate by the phase of the moon if you wanted to!

-b

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