Re: [Bluez-devel] [Fwd: Re: Problem connecting Bluetooth device]

["Harald Niederländer" <harald.niederlaender@ibmt.fraunhofer.de>]

Hi Marcel,

Marcel Holtmann schrieb:

> Hi Harald,
> 
> 
>>>>The problem regarding the linkkey is that the stored linkkey from the first connection is
>>>>OK and all further connections are successful. But if I switch off and then switch on the
>>>>remote device, a new linkkey, different from the first, will be generated, but the old
>>>>linkkey will not be overwritten with the new one! Therefore I can contact the remote
>>>>device only one time (after entering the PIN). Why the linkkey is not overwritten?!
>>>
>>>
>>>how can the remote device generate a new link key when it is switched
>>>off. 
>>
>>Naturally the device is switched on again. Then after entering the PIN, a new linkkey, 
>>different from the first, will be generated. Maybe the linkkey is only temporary and for 
>>each session a new linkkey will be genereted from a random number and the PIN.
> 
> 
> this is possible, but this doesn't explain why the stored link key on
> your device is different from the link key provided on the next connect.

The reason is, that the stored linkkey is the result from the first connection, and 
because each new generated linkkey, after switch off and later switch on the device, is 
different from the first linkkey and the old linkkey will not be overwritten.

Regards

Harald

> This is what we saw in the hcidump.
> 
> Regards
> 
> Marcel
> 
> 
> 
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Bluez-devel mailing list
> Bluez-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bluez-devel
> 
> 



Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
Bluez-devel mailing list
Bluez-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-devel