A Privacy Protection User Authentication and Key Agreement Scheme Tailored for the Internet of Things Environment: PriAuth

Table 2

Symbols used in the PriAuth.

Symbols	Meaning
	Gateway node
	The th user
	The th sensor node
	The th user’s identity
	The th sensor’s identity
∥	String connector, connect two strings together
	XOR operation
	’s secret value, master key
	Shared key between and
	The private key and public key of
	The generator of ECC
,	Shared key between user and
,	Timestamp
	Hash function