[Bluez-users] sniffing others devices - noob

[Bluez-users] sniffing others devices - noob

[Thomas PEYRIN]

hi !

i'm would like to get the random values (in_rand) and
all the other data (Ca - Cb) sent while the
authentification of two devices. Can hcidump get these
values if he runs on a different machine than the two
ones authentificating ?? how so ??

thanks in advance !


	

	
		
Yahoo! Mail : votre e-mail personnel et gratuit qui vous suit partout ! 
Créez votre Yahoo! Mail sur http://fr.benefits.yahoo.com/

Dialoguez en direct avec vos amis grâce à Yahoo! Messenger !Téléchargez Yahoo! Messenger sur http://fr.messenger.yahoo.com


-------------------------------------------------------
This SF.Net email is sponsored by: IBM Linux Tutorials
Free Linux tutorial presented by Daniel Robbins, President and CEO of
GenToo technologies. Learn everything from fundamentals to system
administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] sniffing others devices - noob

[Marcel Holtmann]

Hi Thomas,

> i'm would like to get the random values (in_rand) and
> all the other data (Ca - Cb) sent while the
> authentification of two devices. Can hcidump get these
> values if he runs on a different machine than the two
> ones authentificating ?? how so ??

hcidump only sniffs on HCI level. What you need is a protocol analyser.

Regards

Marcel




-------------------------------------------------------
This SF.Net email is sponsored by: IBM Linux Tutorials
Free Linux tutorial presented by Daniel Robbins, President and CEO of
GenToo technologies. Learn everything from fundamentals to system
administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] sniffing others devices - noob

[Marcel Holtmann]

Hi Thomas,

> on the net I saw example of output of hcidump and after a link key request, the
> response is a 16 bytes value ... this is not the in_rand value in the
> authentification ??

the 16 bytes you have seen must be the 128 bit link key. Read the
Bluetooth HCI specification.

Regards

Marcel




-------------------------------------------------------
This SF.Net email is sponsored by: IBM Linux Tutorials
Free Linux tutorial presented by Daniel Robbins, President and CEO of
GenToo technologies. Learn everything from fundamentals to system
administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] sniffing others devices - noob

[Marcel Holtmann]

Hi Thomas,

> well i've already read it ... but i thought that the link key was not
> transmitted in clear. The first data transmitted is in_rand the first random
> value. hcidump doesn't display data transmitted ?? 

you should read it again. The link key and also the pin code are never
transmitted in clear over the air.

hcidump displays all data on the HCI level. Use the -x switch to look
into some packets.

> if not, do you know a free software that can allow me to catch those data.

On lower levels than HCI you only get the information with a protocol
analyser.

Regards

Marcel




-------------------------------------------------------
This SF.Net email is sponsored by: IBM Linux Tutorials
Free Linux tutorial presented by Daniel Robbins, President and CEO of
GenToo technologies. Learn everything from fundamentals to system
administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users

Re: [Bluez-users] sniffing others devices - noob

[Marcel Holtmann]

Hi Thomas,

> ok ... thanks ! but the only ones available aren't free at all ... very
> expensive ! do you have an idea of software i could maybe use ?

there is no free software (and hardware) for sniffing on the radio level
of Bluetooth.

Regards

Marcel




-------------------------------------------------------
This SF.Net email is sponsored by: IBM Linux Tutorials
Free Linux tutorial presented by Daniel Robbins, President and CEO of
GenToo technologies. Learn everything from fundamentals to system
administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users