DH-HMAC (MIKEY-DHHMAC) (HMAC-Authenticated Diffie-Hellman): This is a light-weight version of Diffie-Hellman MIKEY: instead of certificates and RSA signatures it uses HMAC to authenticate the two parts to one another.
TICKET (MIKEY-TICKET): Ticket-Based Modes of Key Distribution in Multimedia Internet KEYing (MIKEY).