On Jan 28, 2019, at 11:22 AM, John Mattsson <john.matts...@ericsson.com> wrote:
> 
> The intention with "All other parameters such as MSK and EMSK are derived as 
> specified in EAP-TLS [RFC5216], Section 2.3." was to only mention changes 
> compared to RFC 5216.

  Sure.  The confusion is that when reading RFC 5216, it defines Key_Material 
in the same block of text as MSK and EMSK.  That raises the possibility for 
confusion.

> Avoiding potential confusion is a very important goal to avoid incompatible 
> implementations. I think we should make any clarification needed to avoid 
> that. Your mail only mentions MSK and EMSK, but I think the situation are 
> similar with Enc-RECV-Key, Enc-SEND-Key, RECV-IV, and SEND-IV.
> 
> Should all of the following be added to draft-ietf-emu-eap-tls13?

  I think so, yes.

  Maybe also:

All other parameters such as MSK and EMSK are derived in the same manner as 
with EAP-TLS [RFC5216], Section 2.3.  The definitions are repeated below for 
simplicity:

  Alan DeKok.

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