Journal of Sensors

Research Article

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

Table 3

Login and authentication phase.
UserGatewaySensor
input and   
  
  
  
random ,   
get , timestamp   
  
  

checks the freshness of
 
  
  
  
  
 timestamp  
  
 
checks the freshness of
  random ,
  
  
  
 
random number