Page 92 - Trust in ICT 2017

1 Trust in ICT

Figure 29 – Trust management (Trust as a cross domain relationship)

Trust management has the following key functionalities: monitoring management, data management,
analytics management, expectation management and decision management. Specifically trust information
for reputation and recommendation are exchanged to support these functionalities and adaptive knowledge
based control for dynamics is further considered.

(2) Trust Measure & Calculate
For measurable trust, some mechanisms or solutions of trusts may be accounted by defining trust metric or
trust index. There are several attributes for trust provisioning such as security, strength, reliability,
availability, and ability, etc. Depending on services and applications, the required attributes of trust may vary.
For example, for a particular application, trust attributes may be consisted of security, reliability and
availability. Whereas, for other applications, security and reliability may be needed for such trust
provisioning. The capability or attributes of trusts can be also classified into application types, costs, technical
complexity, and human credibility/reputation. Depending on applications, most of trust solutions may be
clarified and mapped.

(3) Trust-based Decision Making
In the IoT environments, data generated by devices and existing infrastructure must be able to be shared
through databases for analysis. For trusted data exchange, each process from sensing to actionable
knowledge requires trust enabled mechanisms such as data perception trust, trustworthy data fusion/mining
and reasoning with trust related policies and rules (see Figure 47).

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