[Bluez-users] Bluetooth passkey and encryption

[Bluez-users] Bluetooth passkey and encryption

[Hofmann, Marco]

Dear members,

For a project in my school I need to connect a Debian Linux Server via
Bluetooth to a serial Bluetooth dongle. It is important that a
connection can be established using only the command line. I use the
bluez-utils 3.7 on a debian unstable (kernel 2.6.17).
Without enabling any security functions the connection can be
established without a problem. As soon as encryption and PIN are enabled
a connection can not be established. I have checked the settings in the
hcid.conf according to various How-Tos to enable encryption and PIN. I
always receive an Input/Output error.
Doing the pairing with a graphical tool like kbluetoothd is possible
with encryption and PIN. So it is possible and the devices work. I am
just frustrated that I am obviously missing something somewhere. If
anyone could help that would be great.

Sincerely,
Marco. 

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Re: [Bluez-users] Bluetooth passkey and encryption

[Marcel Holtmann]

Hi Marco,

> For a project in my school I need to connect a Debian Linux Server via
> Bluetooth to a serial Bluetooth dongle. It is important that a
> connection can be established using only the command line. I use the
> bluez-utils 3.7 on a debian unstable (kernel 2.6.17).
> Without enabling any security functions the connection can be
> established without a problem. As soon as encryption and PIN are enabled
> a connection can not be established. I have checked the settings in the
> hcid.conf according to various How-Tos to enable encryption and PIN. I
> always receive an Input/Output error.
> Doing the pairing with a graphical tool like kbluetoothd is possible
> with encryption and PIN. So it is possible and the devices work. I am
> just frustrated that I am obviously missing something somewhere. If
> anyone could help that would be great.

check with "hcidump -X -V" and look at the syslog for errors from hcid.

Regards

Marcel



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Re: [Bluez-users] Bluetooth passkey and encryption

[Hofmann, Marco]

Hi Marcel

I checked with hcidump and received the following message:

> HCI Event: PIN Code Request (0x16) plen 6
    bdaddr 00:11:B1:A1:68:2B
< HCI Command: PIN Code Request Negative Reply (0x01|0x000e) plen 6
    bdaddr 00:11:B1:A1:68:2B
> HCI Event: Command Complete (0x0e) plen 10
    PIN Code Request Negative Reply (0x01|0x000e) ncmd 1
    status 0x06 bdaddr 00:11:B1:A1:68:2B
    Error: PIN or Key Missing
> HCI Event: Connect Complete (0x03) plen 11
    status 0x06 handle 7 bdaddr 00:11:B1:A1:68:2B type ACL encrypt 0x00
    Error: PIN or Key Missing 

I set a key under the option passkey in the hcid.conf. So if that key is
not used, where would I have to set this key?

Sincerely,
Marco.

-----Original Message-----
From: bluez-users-bounces@lists.sourceforge.net
[mailto:bluez-users-bounces@lists.sourceforge.net] On Behalf Of Marcel
Holtmann
Sent: Monday, February 19, 2007 9:41 AM
To: BlueZ users
Subject: Re: [Bluez-users] Bluetooth passkey and encryption

Hi Marco,

> For a project in my school I need to connect a Debian Linux Server via
> Bluetooth to a serial Bluetooth dongle. It is important that a
> connection can be established using only the command line. I use the
> bluez-utils 3.7 on a debian unstable (kernel 2.6.17).
> Without enabling any security functions the connection can be
> established without a problem. As soon as encryption and PIN are
enabled
> a connection can not be established. I have checked the settings in
the
> hcid.conf according to various How-Tos to enable encryption and PIN. I
> always receive an Input/Output error.
> Doing the pairing with a graphical tool like kbluetoothd is possible
> with encryption and PIN. So it is possible and the devices work. I am
> just frustrated that I am obviously missing something somewhere. If
> anyone could help that would be great.

check with "hcidump -X -V" and look at the syslog for errors from hcid.

Regards

Marcel



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Re: [Bluez-users] Bluetooth passkey and encryption

[Marcel Holtmann]

Hi Marco,

> I checked with hcidump and received the following message:
> 
> > HCI Event: PIN Code Request (0x16) plen 6
>     bdaddr 00:11:B1:A1:68:2B
> < HCI Command: PIN Code Request Negative Reply (0x01|0x000e) plen 6
>     bdaddr 00:11:B1:A1:68:2B
> > HCI Event: Command Complete (0x0e) plen 10
>     PIN Code Request Negative Reply (0x01|0x000e) ncmd 1
>     status 0x06 bdaddr 00:11:B1:A1:68:2B
>     Error: PIN or Key Missing
> > HCI Event: Connect Complete (0x03) plen 11
>     status 0x06 handle 7 bdaddr 00:11:B1:A1:68:2B type ACL encrypt 0x00
>     Error: PIN or Key Missing 
> 
> I set a key under the option passkey in the hcid.conf. So if that key is
> not used, where would I have to set this key?

the passkey option is only used on incoming connection and only if
security auto has been selected. For all the rest you have to run a
passkey agent. Check the mailing list archives for details.

Regards

Marcel



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