PUF-Assisted Lightweight Group Authentication and Key Agreement Protocol in Smart Home

Table 3

Communication cost comparison.

Scheme	Single device cost	devices cost	The no. of message
Challa et al. [20]	2016	2016	4
Wazid et al. [8]	2592	2592	4
Li et al. [9]	2048	2048	4
Yu and Li [46]	4096	4096	8
Shuai et al. [47]	2272	2272	4
Banerjee et al. [48]	2048	2048	4
Our protocol	3296		6