Hi @leons
Mbed TLS is a TLS stack, and doesn’t support EAP-TLS.
However, you can implement the EAP protocol on top of Mbed TLS, and use the key export feature to export the key material for EAP-TLS.
Note that the key export feature is available on the feature branch, and not on any LTS branch.
You can look at the ssl_client2 example on how the key is derived for EAP-TLS.
Regards,
Mbed TLS Support
Ron