Page 218 - Trust in ICT 2017

3 Trust in ICT

Figure IV.7 – Device selection for data transmission

4.2 Actors
– User: A user who takes the ownership of the things (e.g., smartphone, laptop, etc.) and wants to
exchange information with another peer via other users.
– Device (Smartphone): A device, which is an intermediate entity, is available to send its owner’s social
relationship information and its CoI information to other devices. Also, it is in charge of judging
authorization to send information.

– Trust management platform: A trust management platform is mainly in charge of collecting the
social information and calculating the subjective trust value.

4.3 Detailed service flow

User Device (Smartphone) Trust Management Platform Other Devices

1) Want to exchange information
2) Send a request
3) Data collection from devices

4) Calculate the subjective trust value
5) Notification

The highest trust value 6) Select the path & Start to send information

Figure IV.8 – Device selection for data transmission service flow

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