Subject: Re: [Bluez-devel] Re: Jumpy cursor with Wacom Graphire Bluetooth
From: Marcel Holtmann <marcel@holtmann.org>
To: bluez-devel@lists.sourceforge.net
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Date: Mon, 28 Nov 2005 11:29:01 +0100

Hi Robert,

> > > > > > Don't even think about switching into security mode 3. Use the -E switch
> > > > > > of hidd instead.
> > > 
> > > Why? What is the difference?
> > 
> > the security mode 3 comes with a lot of troubles and unless you really
> > know what you are doing, don't use it. Period.
> 
> I don't yet "really know", but I would like to.

check the mailing list archives for details.

> > You can check with "hcitool con" is the encryption for a link is active.
> 
> I thought so, too, but as it did not say neither "yes" nor "no"...
> 
> siemer@panorama:/var/lib/bluetooth$ hcitool con
> Connections:
>         > ACL 00:13:C2:00:11:2C handle 42 state 1 lm MASTER 

It will show ENCRYPT (and AUTH) for an encrypted link.

> > The new tools store the link keys under /var/lib/bluetooth and if the
> > tablet is detected as mouse then maybe the encryption will never be
> > requested by hidd.
> 
> How can I force hidd to try the encryption? I'm sure it sees the tablet
> as a mouse...

I think you need to change the source code for it.

> Anyway: should be noted in /etc/bluetooth/hcid.conf as a comment to try
> the (sometimes undocumented) "-E" switch instead of enableing it
> there...

Send in an patch for the hidd manual page.

Regards

Marcel


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