Research on Lightweight Mutual Authentication for the Product Authorization Chain

Table 3

The comparison of memory and communication cost.

Cost testing	Wang et al.’s [4]	Wen and Li’s [5]	Chang et al.’s [6]	Kumari et al.’s [7]	Wang et al.’s [11]	Kaul and Awasthi’s [8]	Ours
Memory cost	3L	3L	3L	6L	2L	5L	5L
Communication cost	6L	9L	6L	7L	6L	6L	6L