Patent ID: 9554270
Date: 2017-01-24
CPC Classifications: H04L,H04W

Claim:
1. A method, implemented at a first wireless transmit/receive unit (WTRU), for secure direct link communication, the method comprising: generating, by the first WTRU, a first nonce; exchanging, by the first WTRU, the first nonce and a second nonce associated with a second WTRU; subsequent to exchanging the first nonce and the second nonce, generating, by the first WTRU, a common nonce that is common to the first WTRU and the second WTRU, wherein the common nonce is derived from the exchanged first and second nonces; transmitting, by the first WTRU, group identification information including the common nonce to an authentication server; and receiving, by the first WTRU, a master key from the authentication server, wherein the master key is securely encrypted uniquely for the first WTRU.