AT Command Manual
v1.5
©2013 LM Technologies Ltd
www.lm-technologies.com
Page 22 of 26
where“XXXXXXXXXXXX” is address of remote Bluetooth 2.0 device. The host should
send (“
AT+DPIN
”) command with the 4-8 digit pin code for authentication process.
2.9.3
Bluetooth 2.1 Security events
Note:
2.10
This section is only applicable for v6.17 firmware version running on LM780/LM400/LM072
module hardware. If applicable, refer to section
for more details.
The connected host will receive one event message during authentication with remote Bluetooth 2.1
device. The event message received will depend on the local device type configuration
(“AT+IOTYPE”) as well as MITM protection setting.
2.9.3.1
Passkey Cfm
This event is sent by local Bluetooth device to connected host on authentication request
from remote Bluetooth 2.1 device if MITM protection has been enabled on local Bluetooth
device and local device type configuration is (
“AT+IOTYPE1”
) which means “
Display with Yes
or No”.
2.9.3.1.1
Syntax
<cr,lf>PASSKEY CFM“XXXXXXXXXXXX”,dddddd<cr,lf>
where“XXXXXXXXXXXX” is address of remote Bluetooth 2.1 device and”dddddd” is 6
digit passkey to be confirmed by host and remote device user. The host must display
passkey(6 digit) and prompt local user to confirm if displayed passkey is same as
displayed on remote BT2.1 device(“Display Yes or No”) or same passkey entered by
remote person on remote BT2.1 device(“Keyboard only”). The host should send
(“
AT+PASSCFM
”) command for this confirmation.
2.9.3.2
Passkey Dsp
This event is sent by local Bluetooth device to connected host on authentication request
from remote Bluetooth 2.1 device if MITM protection has been enabled on local Bluetooth
device and local device type configuration is (
“AT+IOTYPE0”
) which means “
Display Only”.
2.9.3.2.1
Syntax
<cr,lf>PASSKEY DSP“XXXXXXXXXXXX”,dddddd<cr,lf>
where“XXXXXXXXXXXX” is address of remote Bluetooth 2.1 device and ”dddddd” is 6
digit passkey for display purposes only. The host must display passkey (6 digit) and
remote device user should confirm if displayed pass key is same as displayed on
remote BT2.1 device (“Display Yes or No”) or same passkey entered by remote user
on remote BT2.1 device (“Keyboard only”).
2.9.3.3
Passkey Req
This event is sent by local Bluetooth device to connected host on authentication request
from remote Bluetooth 2.1 device if MITM protection has been enabled on local Bluetooth
device and local device type configuration is (
“AT+IOTYPE2”
) which means “
Keyboard Only”.
2.9.3.3.1
Syntax
<cr,lf>PASSKEY REQ“XXXXXXXXXXXX”<cr,lf>
where“XXXXXXXXXXXX” is address of remote Bluetooth 2.1 device. . The host will
prompt local user to enter same passkey as displayed on remote BT2.1
device(“Display Yes or No” or “Display only”) or same passkey entered by remote
person on remote BT2.1 device(“Keyboard only”). The host should send
(“
AT+PASSKEY
”) command for this confirmation.
