No input and output capabilities, possible security

[chinargor]

Hi BLE Developers,

I'm developing a BLE peripheral device using S110 softdevice which doesn't have any input or output capabilities and will communicate with smartphone. Just works pairing method doesn't satisfy for my project requirements. I don't want to use white list as well. (MITM protection) I read in other forums that OOB pairing method doesn't supported for many central devices.

I'm thinking about to use static key in peripheral side and confirmation of that static key in a central side. Is it possible? If no, can you please give me advise how can I protect my device from MITM ?

Thanks in advance for your help, and looking forward to your answers.

[chinargor]

Thanks a lot for your help. Your advices were really helpful for me.

[Hung Bui]

@Chinargor: I'm happy to help. Could you mark the question as correct and we can close the case ?

[Bui Tan Duoc]

Any Keil 4 project like this!