Table 4.1 MQTT events that trigger trust... | Emerald Publishing

Table 4.1

MQTT events that trigger trust evaluation.

Event	Topic	Payload/description
New device	entity/entityID/new	Device (entity) type and parameters (A new device sends its trust related information).
Device removed	entity/entityID/remove	An announcement to remove a device from the network.
Device data	device/entityID/data	Device Data (Through this topic, the TA sends the Device Data to the TMB.)
Trust Score Calculation	entity/entityID/agent/calculate	Initial or updated trust score for a device (the TMB calculates the trust score of a device with a specific ID and forwards it to the subscribers of that topic.)
Risk score calculation	entity/entityID/tmra/riskscore	A risk score computed by the TMRA module.(Through this topic, the TMB will receive the risk score from the TMRA module for the device with the specified ID.)
Interaction with the IDS	entity/entityID/ids	IDS monitoring score. (Through this topic, the TMB interacts with the IDS module to obtain an IDS monitoring score.)
Interaction with the CTI	entity/entityID/cti	Through this topic the CTI interacts with the TMB and sends threat related information.
Interaction with MUD	entity/entityID/mud/MUDfilejson	Through this topic the MUD interacts with the TMB and sends the MUDfile, a json file which contains manufacturer specification and expected behavior for a device with a specific ID.

Event	Topic	Payload/description
New device	entity/entityID/new	Device (entity) type and parameters (A new device sends its trust related information).
Device removed	entity/entityID/remove	An announcement to remove a device from the network.
Device data	device/entityID/data	Device Data (Through this topic, the TA sends the Device Data to the TMB.)
Trust Score Calculation	entity/entityID/agent/calculate	Initial or updated trust score for a device (the TMB calculates the trust score of a device with a specific ID and forwards it to the subscribers of that topic.)
Risk score calculation	entity/entityID/tmra/riskscore	A risk score computed by the TMRA module.(Through this topic, the TMB will receive the risk score from the TMRA module for the device with the specified ID.)
Interaction with the IDS	entity/entityID/ids	IDS monitoring score. (Through this topic, the TMB interacts with the IDS module to obtain an IDS monitoring score.)
Interaction with the CTI	entity/entityID/cti	Through this topic the CTI interacts with the TMB and sends threat related information.
Interaction with MUD	entity/entityID/mud/MUDfilejson	Through this topic the MUD interacts with the TMB and sends the MUDfile, a json file which contains manufacturer specification and expected behavior for a device with a specific ID.