A Secure and Privacy-Preserving Three-Factor Anonymous Authentication Scheme for Wireless Sensor Networks in Internet of Things

Table 1

Notations.

Notations	Description
	User
	Adversary
	sensor node
	Gateway node
	Unique identity of
	Password of
	Biometric information of
	Unique identity of
	Session key
	’s secret parameter
, , ,	Timestamp
	Hash function
	Concatenation
	XOR operation
	The generator point on the curve
,	Fuzzy extractor algorithm for reproduction and generation
	Reproduction parameter of fuzzy extractor algorithm
	Biometric key of fuzzy extractor algorithm
	The transmission delay time