Trust Levels in Peer-to-Peer (P2P) Vehicular Network

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Trust Levels in Peer-to-Peer (P2P) Vehicular
Network
VANET TRUST
Dr I.A.Sumra
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• Vehicular ad-hoc network is a special kind of
  network in which nodes (Vehicles) can communicate
  with each other on the road and with its
  Infrastructure.

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VANET Applications

• Safety Applications
• Non Safety Applications

Work Zone Warning!!!
Work Zone Warning!!!
Work in Progress Plz! use Alt. route
Shopping MALL ( TESCO )
Parking Slot Available!!!
Parking Slot Available!!!
RSU
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Trust

• an entity can be trusted if it always behaves in
  the expected manner for intended purpose.
• all components of the network (vehicles and
  infrastructure) are behaving in an
• expected manner
• (secure communication between the components) and
  serve the users and save human lives.

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Security and Trust

• Security is one of the most important issues in
  vehicular network. Applications of vehicular
  network should be secure and user receives right
  information while traversing along their journey.
  
• Trust is also a key component of security and
  trust is governs the behavior all components in
  the network which must behave in the expected
  manner.
• User, vehicle and road side unit (RSU) are some
  components of trusted vehicular network. If any
  of these components of network unexpectedly
  change their behavior then it would signify that
  there is a breach of trust in the network.

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Requirement of Trust in P2P Vehicular network

• What is TRUST A system or component that
  behaves in expected manner for the particular
  purpose .
• TRUST in VANET All components of the network
  (user, vehicles and infrastructure) are behaving
  in an expected manner (trusted communication
  between the components) and serve users which
  subsequently would save human lives.

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Trust

• Trust Expectancy Belief in expectancy
  Willingness to be vulnerable for that belief.
• Expectancy First module of the trust is
  expectancy. It means that the Trustor node (A)
  expects a speci?c behavior of the Trustee node
  (B) such as receiving valid messages or
  e?ectively performing cooperative action upon
  that receiving safety or non safety messages.
• Belief in Expectancy Trustor (node A) believes
  that the expected thing is true, based on
  evidence of the trustees (RSU) competence and
  goodwill.

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Trust Types

• Trust in Belief
• Trust in belief is the trust placed on what
  trustee believes.
• Trust in belief semantics is that the trustor
  entity (Node A (a)) believes on information x
  (safety or non safety message) that the trustee
  entities (Node B (b), RSU (r)) in the context of
  k within the trustors context of trust. Entity
  (a) has relationship with two entities, so we
  explain the belief of trust from entity (a) to
  entity (b) and then from entity (a) to entity RSU
  (r).

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Trust Types..

• Trust in Performance
• Trust in performance is the trust in what
  trustee performs such as the information created
  or the actions performed.
• Trustor (Node A) believes on messages that is
  created and receiving from trustee (node B, RSU)
  in a context within the trustors context of
  trust, or the trustor (node A) believes in the
  performance of an action (sending safety or non
  safety messages) committed by the trustee (node
  B, RSU) in a context within the trustors context
  of trust.

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Properties and components of Trust in Vehicular
Network

• Context Dependence
• Function of Uncertainty
• Quantitative Values
• Transitivity
• Asymmetry
• Personalization

Components of TRUST in Vehicular Network
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Component Behavior

• User Behavior
• Node Behavior
• Road Side Unit (RSU) Behavior

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Proposed Trust Levels

• Zero Trust
• This is the first level of trust in which the
  attacker is dominant and launch different kinds
  of attack and it is not possible for other users
  of network to communicate and take service from
  network.
• attacker X launched two different kinds of
  attacks (DOS attacks and send wrong message). In
  this scenario, Node B could not take service from
  RSU due to DOS attack and Node X also sent wrong
  message to node B and node B sent this wrong
  message to node A, causing the whole network to
  be affected.

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Proposed Trust Levels..

• Weak Trust (a)
• Weak Trust is the second level of trust in which
  the attacker is able to launch different kind of
  attacks within some specific region. Some
  entities are affected with these attacks whereas
  other entities of the network can still perform
  their task properly and serve the users of the
  network.
• explains the scenario in which node B is not
  possible to make communication with RSU but it is
  capable to make communicate with other node A.

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Proposed Trust Levels..

• Weak Trust (b)
• explains the second scenario in which
  communication is disturbed between vehicle to
  vehicle (V2V) due to DOS attack. However, Node B
  is still able to communicate and take service
  with RSU. But Node C could not communicate with
  node A due to DOS attack.

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Proposed Trust Levels..

• Strong Trust
• Strong trust refers to the situation in which all
  entities of the network are trusted and work
  properly. There are no attackers in the network
  and this is a very ideal condition and every
  entity performing their task properly.
• the strong trust levels in which node B is
  performing all types of task and take services
  from other nodes and also from RSU.

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Conclusion

• Security and trust are becoming increasingly key
  challenges in vehicular network.
• Safety and non safety applications serve users
  when components (user, vehicle and RSU) of the
  network behave in an expected manner in peer to
  peer vehicular communication. Whenever any
  component of the network unexpectedly changes
  their behavior then it would be harmful for other
  users of the network.
• We proposed three different trust levels in peer
  to peer vehicular network. We discussed in detail
  the functionality of different component of
  network pertaining to the trust levels, and
  emphasized the role of trusted users in peer to
  peer vehicular communication.

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• Send email isomro28_at_gmail.com
• Please download complete paper
• IEEEE website
• ResearchGate
• Video Available on given link-
• https//www.youtube.com/watch?vaNQEF9qkpfM

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