Group Key Generation Sample Clauses

Group Key Generation. KRSU = eˆ( Di, dRSU P ). Then, it computes its sig- After σi is authenticated, the RSU will generate the group key for vehicles in its area. RSU selects a random nonce dRSUΣ∈ Zq∗, and computes Di = dRSU PIDi,1 and 2 Review of Xxx et al.’s SEGKA Xxx et al.’s [9] SEGKA scheme consists of seven phases: parameter initialization, vehicle and RSU registration, vehicle signing, RSU verification, group key generation, group member joining, and group member leaving.

Group Key Generation. Σ After σi is authenticated, RSU selects dRSU ∈ Zq∗ and computes Di = dRSU PIDi,1. In this phase, we make a signature σ′ key K′ = eˆ R SΣU before they compute their new group modification where the RSU will do the summation of Di . At this point, i=1 as DG =

Group Key Generation. After the vehicles are authenticated, the RSU generates the group key for the vehicles. The detailed processes are as follows. (1) The RSU randomly selects a random nonce dRSU ∈ RZq∗, computes Di = dRSU PIDi,1, and computes the group key KRSU as follows: KRSU = e(∑ Di, dRSU P) (3) i=1 (2) The RSU computes its signature σRSU = SKRSU H(D), where D = D1||D2|| · · · ||Dn. Then, it broadcasts Z = σRSU ||D to the vehicles, as shown in Figure 6. Z = ıRSU||D