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Proposed solution
New MIKEY Mode
Responder generates TGKs and PKE
Initiator Responder

I_MESSAGE = HDR, T, CERTi, [IDr], [SP], SIGNi -->

R_MESSAGE = HDR, T, RAND, IDr|CERTr, {SP}, KEMAC, PKE, SIGNr
PKE = E(PKi, env_key) KEMAC = E(encr_key, IDr || {TGK}) || MAC
PPT Version