A secure temporal credential-based authenticated key agreement scheme for Wireless Sensor Networks (WSNs) enables a user. a sensor node and a gateway node to realize mutual authentication using temporal credentials. The user and the sensor node then negotiate a common secret key with the help of the gateway node. and establish a secure and authenticated channel using this common secre... https://www.lightemupsequences.com/quick-find-Our-Seasons-The-World-in-Winter-Spring-Summer-and-Autumn-best-save/