NRF51822 S110 ble_gap_sec_params_t SDK7 vs SDK8

[Omnia]

Hello,

I am currently use the new SDK 8.0 for the NRF51822 (S110 soft device). I noticed that on SDK 7.0 for the ble_gap_sec_params_t struct, there was a variable called timeout

ble_gap_sec_params_t struct for SDK7.0

This variable has now disappeared with the version of the SDK8.0 :

ble_gap_sec_params_t struct for SDK8.0

I would like to know why this modification occurred and what is the workaround now ?

In a second time, I do not well understand the purpose of the newble_gap_sec_kdist_t kdist_periph ble_gap_sec_kdist_t kdist_central. Could you please provide me some explanations and/or examples of this feature to understand what is it ?

Thanks,

[Susheel Nuguru]

For your first question:

The application can no longer specify a timeout for security procedures:  
The timeout field has been removed from ble_gap_sec_params_t, and the timeout length is now set internally by the stack according to the specification.

[Omnia]

Hello Aryan, Thanks for your answer, OK, got it, but if it is set by the stack, how can I setup it ? I am little bite lost! Could you provide me more details please ?

[Susheel Nuguru]

Hi, you dont have to setup timeout anymore, application do not have control on the timeout now and this was done to remove a security loophole.

[Omnia]

Ok got it. Last question : Do you have any information about this "security loophole" , please ? Thanks

[Susheel Nuguru]

I do not anymore than the one already provided information in the migration documents.

[Omnia]

Ok thanks for your support