BLE UART example pairing? password?

[mbates14]

I noticed when using the UART BLE Example that there is no password or pairing request to connect to and use the device. 

Everything works fine, and I even implemented my own little password thing that has to present a password over the active connection before itll start sending data over the UART connection. 

The trouble is, there is no paring password or code, or password in order to connect. I cant figure out how to fix that situation, any ideas? 

This is causing me a problem in the Denial of Service area. Someone can connect to the device, and just leave it idle and connected, preventing an authorized user from connecting. This is starting to happen to me in school situations because of nefarious students. 

[Simon]

I would recommend you to use the Peer Manager if you would like add bonding/pairing to the ble app uart example, which will prevent unauthorized users to connect to your application.

Take a look at the answer I just posted about bonding. I have also attached an example I made earlier with the BLE UART peripheral example with legacy bonding with a static passkey. Be aware that this pairing method is not really secure from attackers.

ble_app_uart_bonding_static_passkey_SDK_15.2.0.zip

Best regards,

Simon

[mbates14]

I tried to copy/paste in your changes, and I keep getting a file not found error: #include "peer_manager_handler.h"

It cant find that file. So I went into my BLE components and looked under peer manager, it doesnt exist. 

[Simon]

What SDK do you use?

[mbates14]

I think 14.2.0? I tried a newer one when I first started messing with this, but I could never get my main.c file to compile. I had to roll back. 

Here is my main.c file that works without pairing: https://www.dropbox.com/s/q0x9lc1gh4jtk67/main.c.old?dl=0

Here it is with the modifications I tried to make based off of yours: https://www.dropbox.com/s/nou5twdbt4x6tc7/main.c?dl=0

Any help here would be awesome. 

[Simon]

The example project I uploaded is used with SDK 15.0.0. If you upgrade your current application to SDK 15 by following this migration guide, and then adding my modifications it should work fine.

Best regards,

Simon

[mbates14]

Ok. So, I downloaded the 15.2 SDK along with your example, I compiled it and ran it as-is without modifications just so I can start with a known good baseline. It still allows me to connect without pairing to the device so something is wrong somewhere. Also when running in the debugger, it randomly encounters Fatal Errors and the BT module needs reset. Alot.... 

Then when I do go to pair it, I get this output in the debugger:

<info> peer_manager_handler: Connection security failed: role: Peripheral, conn_handle: 0x0, procedure: Bonding, error: 132

Thoughts?