MITM Bond Failure Android 5.0 and nrf51822

RE: MITM Bond Failure Android 5.0 and nrf51822

vineeshvs — Sat, 31 Oct 2015 06:47:41 GMT

@Petter Is this issue still there?

I am getting the following error in nRF Toolbox (UART) app

My settings are the following

#define SEC_PARAM_BOND                  0                                           /**< Perform bonding. */
#define SEC_PARAM_MITM                  1                                           /**< Man In The Middle protection not required. */
// #define SEC_PARAM_IO_CAPABILITIES       BLE_GAP_IO_CAPS_DISPLAY_ONLY                        /**< No I/O capabilities. */
#define SEC_PARAM_IO_CAPABILITIES       BLE_GAP_IO_CAPS_DISPLAY_YESNO                        /**< No I/O capabilities. */
#define SEC_PARAM_OOB                   0                                           /**< Out Of Band data not available. */
#define SEC_PARAM_MIN_KEY_SIZE          7                                           /**< Minimum encryption key size. */
#define SEC_PARAM_MAX_KEY_SIZE          16                                          /**< Maximum encryption key size. */

#define START_STRING                    "Start...\n"                                /**< The string that will be sent over the UART when the application starts. */

#define PASSKEY_TXT                     "Passkey:"                                  /**< Message to be displayed together with the pass-key. */
#define PASSKEY_TXT_LENGTH              8                                           /**< Length of message to be displayed together with the pass-key. */
#define PASSKEY_LENGTH                  6                                           /**< Length of pass-key received by the stack for display. */
#define STATIC_PASSKEY					"123456" 									/**< Static pin. */

RE: MITM Bond Failure Android 5.0 and nrf51822

Petter Myhre — Tue, 03 Feb 2015 11:09:16 GMT

I have reproduced this and we have notified Google about the issue.

Unfortunately, we just have to wait for them to fix this.

I'm sorry for any inconvenience this causes.

@Clem Regarding the BLE_GAP_IO_CAPS_DISPLAY_YESNO solution, I experienced the same as you, it didn't make a difference.

RE: MITM Bond Failure Android 5.0 and nrf51822

Lucas — Fri, 16 Jan 2015 19:01:29 GMT

Awsome. Thanks for the information. Glad others are seeing simular issues.

RE: MITM Bond Failure Android 5.0 and nrf51822

Clem Taylor — Fri, 16 Jan 2015 10:04:46 GMT

Thanks for asking this, I've been meaning to but have been busy working on other things.

You aren't the only one, this is a reported issue to the android folks but they do not seem to be in any hurry to fix it.

code.google.com/.../detail code.google.com/.../detail code.google.com/.../detail along with a few others

There was a claim that you could get it to work with BLE_GAP_IO_CAPS_DISPLAY_YESNO instead of BLE_GAP_IO_CAPS_DISPLAY_ONLY like I have now, my quick try with that didn't work. However, it wasn't clear how to confirm the bond when using YESNO (no example).

Maybe one the nordic folks has a suggestion how to work around this.