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PEMK
PEMK = prf+(MSK, "PaC-EP master key" | SID | KID | EPDID)

prf+ : defined in IKEv2 [RFC4306]. The actual pseudo-random function used for the prf+ is negotiated within PANA session (c.f., I-D.ietf-pana-pana)

MSK is a Master Session Key generated by EAP and exported to PANA.

SID: PANA session identifier

KID is the content of the PANA Key-ID AVP.

EPDID: Identifier of the EP. The EPDID format is the same of Address type of Diameter:
2-octet AddressType + addres value
AddressType contains Address Family defined in [IANAADFAM]
How a PaC configures the identifier of the EP is out of the scope of this document.
PPT Version