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

Table 1

Notations and descriptions.

Notations	Descriptions
RC	Registration center
, and HG	user, smart device, and home gateway
	user equipment
, , and	’s, , and HG’s identity
	’s password
	’s biometrics
,	Generation and reproduction algorithm of fuzzy extractor
	’s biometrics key, ’s physical key
	Public parameters
	Current timestamp
	Maximum communication delay
	HG’s secret key
	Symmetric key between and HG
	Group session key between the user and smart devices
	Secret value utilized for secret sharing
	’s secret share
	Physical unclonable function
	One-way hash function
	Concatenation and bit-wise XOR operation, respectively