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

Table 1

Comparison of protection of privacy.

Schemes	Sensor anonymity	User anonymity	Shared key privacy
Choi et al. [1]	×	×	√
Shi and Gong [2]	×	×	√
Chang and Le [3, Scheme 1]	×	×	×
Chang and Le [3, Scheme 2]	×	×	√
Wu et al. [4]	√	×	√
Das et al. [5]	√	×	√
Jung et al. [6]	√	×	×
Fan et al. [7]	×	×	×
Amin and Biswas [8]	×	×	×
Nam et al. [9]	×	×	√
Lu et al. [10]	√	√	×
Zhao et al. [11]	√	×	×
Hou et al. [12]	×	×	×
Farash et al. [13]	×	×	×
Turkanović et al. [14]	×	×	×
PriAuth	√	√	√