Page 256 - Trust in ICT 2017

5 Trust in ICT

7.3 Model for trust provisioning

Figure 4 – Trust provisioning in the ICT world for trusted ICT applications

With the perspectives of trust provisioning, there are physical, cyber, and social worlds. To build ICT
ecosystem, the raw data from physical things in the physical world are produced by physical interfaces like
sensors and actuators. In the cyber world, there are physical objects and logical objects. Physical objects are
the objects mapping to hardware devices and equipment which have capabilities of data processing, data
storage, and communication, etc. Logical objects are algorithms, functions, and software which are working
over computing, storage, and networking components. In the social world, social entities like human,
stakeholders, and software agents, which are a computer program that acts for a user, produce and consume
various data and applications through user interfaces. Physical things, cyber objects, and social entities make
interactions to perform trusted ICT applications with considering physical, cyber, and social trust, respectively.
Figure 4 shows trust provisioning in the ICT world to realize various trusted ICT applications.

– Physical trust: The physical trust reflects various trust aspects of physical things, which can be
measured by counting on its trustworthiness in terms of capability, integrity, and cooperation. Its
capability means the ability of the physical thing to perform its task with correct functionality. Its
integrity means the state of the physical thing being stable without trouble or breakdown. Its
cooperation means that the physical thing is working together with other physical things for their
common purposes. The physical trust reflects trust propensity which is affected by risks related to
the physical world.
– Cyber trust: The cyber trust reflects various trust aspects of cyber objects, which can be measured
by counting on its trustworthiness in terms of capability, integrity, and cooperation. Its capability
means that the ability of a cyber object is correct and assured to execute control, computing, and
communication. Its integrity means that data handled or provided by cyber objects are not
accidentally or maliciously altered or destroyed during control, computing, and communication. Its
cooperation means how much the cyber object is well working together with other objects. The
cyber trust reflects trust propensity which is affected by risks at the cyber world.
– Social trust: The social trust reflects various trust aspects of social entities. A social trust can be
measured by considering its trustworthiness in terms of ability, honesty, and benevolence. Its ability
means human competence in his/her activity. Its honesty implies that the social entity treats others
honestly. Its benevolence means how much the social entity behaves nicely to other social entities
or how much the social entity has interactions with other entities for their kindness. The social trust
reflects trust propensity which is affected by risks at the social world.

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