Page 216 - Trust in ICT 2017

3 Trust in ICT

Figure IV.5 – Document sharing service high level illustration

3.3 Detailed service flow

Wireless Portable Hard
Drive Trust Management Platform Smartphone User

1) Send a request
2) Data collection from smartphone

3) Calculate the subjective trust value
4) Notification

5) Trust value ≥ Threshold 5-1) Send the document
5-2) Notification

6) Trust value < Threshold 6-1) Deny the request
6-2) Notification

Figure IV.6 – Document sharing service flow

Detailed flow description
1) When User B requests the document to User A's wireless portable hard drive (WPH) by using B’s
own smartphone.

2) User B's smartphone as a gateway sends User B’s social information CoI value to trust management
platform.
3) From User A’s perspective, trust management platform calculates the subjective trust value (Ta,b)
of User B toward User A by using given information of User A and B.

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