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Subject: Re: [Bluez-users] Pairing multiple devices
From: Marcel Holtmann <marcel@holtmann.org>
To: Alex Eiser <alexe@ed.ca>
Cc: BlueZ Mailing List <bluez-users@lists.sourceforge.net>
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Date: Mon, 23 Feb 2004 08:32:26 +0100

Hi Alex,

> I have several bluetooth devices, which I am having a hard time getting 
> them all connected at the same time.
> 
> The problem is that, one device (a Logitech MS 900) doesn't seem to 
> work if I have encryption and authentication enabled.

and this is correct. Read the HID profile for more details.

> However my apple wireless keyboard does not work with out those options 
> enabled.

The Apple mouse is wrong here, because the HID device must not decide
this. In the case of HID the host stack must trigger the authentication.

> With encryption and authentication on, the mouse does not have a 
> successful pairing. (always failing on the key request)

With auth and encrypt set in hcid.conf or with hciconfig you enable
security mode 3 and this is not what you really want. Disable it and let
the device decide when to ask for authentication.

> Is there a way to specify that a specific connect uses (or doesn't use) 
> encryption and authentication?

See above. You are in security mode 3, but what you want is security
mode 2.

Regards

Marcel




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