A CAN-Bus Lightweight Authentication Scheme

. 2021 Oct 25;21(21):7069. doi: 10.3390/s21217069

Algorithm 13:

L e a v e_K e y C h a n g e

: The GW sends out the group key individually.

Input:

{S_{g}}^{i}

S_{j}^{i}

{T C}^{i}

Output: Packet ,

S_{g}

seed = random64(); ;

s k^{i} = K D F ({S_{g}}^{i}, s e e d)

;
Packet.data =

E n c r y p t (S_{j}^{i}, s k^{i})

;
Packet.CRC =

M G (S_{j}^{i} ∥ {T C}^{i} ∥ P a c k e t . d a t a)

;

{S_{g}}^{i} = {s k}^{i}

;