Linux command line howto accept pairing for bluetooth device without pin

Question

Is there a way to pair a device in linux without requiring a pin for testing purposes so I need it to be done w out human interaction  assuming you have root access    bluez-simple-agent seems to require a pin except with some simple devices such as mice

User · Answer

hciconfig noauth   This should do the trick  I m using bluez 5 23 and there s no more simple-egent and blue-utils   However  I m trying to look for a way to make changes hciconfig permanent because after power out and then power on  authentication is needed again  So far  the changes in hciconfig still stays the same when you reboot it  it reverts back only when power out  If anybody has found a way to make hciconfig permanent  do let me know

User · Answer

For Ubuntu 14 04 and Android try   hcitool scan  get hardware address sudo bluetooth-agent PIN HARDWARE-ADDRESS   PIN dialog pops up on Android device  Enter same PIN   Note  sudo apt-get install bluez-utils might be necessary   Note2  If PIN dialog does not appear  try pairing from Android first  will fail because of wrong PIN   Then try again as described above

User · Answer

hciconfig noauth   It worked for me in  Linux mx 4 19    The exact steps are   1  open a terminal - run   hciconfig noauth   2  use the blueman-manager gui to pair the device  in my case it was a keyboard   3  from the blueman-manager choose  connect to HID   step 3  is normally asking for a password - the  hciconfig noauth  makes step 3  passwordless

User · Answer

Entering a PIN is actually an outdated method of pairing  now called Legacy Pairing  Secure Simple Pairing Mode is available in Bluetooth v2 1 and later  which comprises most modern Bluetooth devices  SSPMode authentication is handled by the Bluetooth protocol stack and thus works without user interaction   Here is how one might go about connecting to a device     hciconfig hci0 sspmode 1   hciconfig hci0 sspmode hci0    Type  BR EDR  Bus  USB BD Address  AA BB CC DD EE FF  ACL MTU  1021 8  SCO MTU  64 1 Simple Pairing mode  Enabled   hciconfig hci0 piscan   sdptool add SP   hcitool scan     00 11 22 33 44 55    My Device   rfcomm connect  dev rfcomm0 00 11 22 33 44 55 1  amp  Connected  dev rfcomm0 to 00 11 22 33 44 55 on channel 1 Press CTRL-C for hangup   This would establish a serial connection to the device

User · Answer

follow steps  CentOs     bluetoothctl devices scan on pair 34 88 5D 51 5A 95  34 88 5D 51 5A 95 is my device code replace it with yours  trust 34 88 5D 51 5A 95 connect 34 88 5D 51 5A 95   If you want more details  https   www youtube com watch v CB1E4Ir3AV4

User · Answer

Try setting security to none in  etc bluetooth hcid conf  http   linux die net man 5 hcid conf  This will probably only work for HCI devices  mouse  keyboard  spaceball  etc     If you have a different kind of device  there s probably a different but similar setting to change

User · Answer

This worked like a charm for me  of-course it requires super-user privileges  -       hcitool cc  lt target-bdaddr gt   hcitool auth  lt target-bdaddr gt   To get  lt target-bdaddr gt  you may issue below command    hcitool scan  Note  Exclude    amp    as they are command line prompts   Courtesy

[linux] Linux command line howto accept pairing for bluetooth device without pin

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