Abstract: A method of data routing in a network through time-variant contextual trust includes: determining, by the network, a level and a nature of confidentiality of data to be transmitted from at least one network component to at least one recipient network component; determining, by the network, a time-variant availability of at least one hop node; determining, by the network, an owner of the at least one hop node and a profile of the owner of the at least one hop node; determining, by the network, a time-variant contextual trust between an owner of the at least one network component and the owner of the at least one hop node; and determining, by the network, a hop routing strategy for data routing.

Abstract: Disclosed are a time synchronization method and device. The method includes: a slave device detecting whether time synchronization can be performed via a primary link between a master device and the slave device; and when time synchronization cannot be performed via the primary link between the master device and the slave device, the slave device using a backup link to perform time synchronization. By the method and device in the embodiments of the present document, the technical problem of time synchronization failure caused by abnormalities in the related art is solved, and the technical effect of improving the reliability of time synchronization is achieved.