Which JS function derive AppKey ?

[alfonzodi]

Hi,

I am in LORAWAN 1.0.2, and I am looking for the function that generates the NwkSKey and the AppSkey fromroot key (appKey).
I know it's two keys are generated in the generation of the join accept.
Are the two keys generated here?
*"lorawan / backend / join_request.go/" ====> func createJoinAnsPayload(ctx context) error

[brocaar]

Please see https://github.com/brocaar/lorawan/blob/master/backend/joinserver/session_keys.go.