Forming Vehicular Web of Trust in VANET

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VANET Security Research Group (VSRG)
VANET TRUST
Forming Vehicular Web of Trust in VANET

• Dr I.A.Sumra

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Overview

• Introduction
• Requirement of Trust in P2P Vehicular network
• Properties and components of Trust in Vehicular
  Network
• Proposed Trust Levels
• Types of TRUST in Vehicular Network
• Conclusion
• References
• QA

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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.

V2I
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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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Component Behavior

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

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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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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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PROPOSED WEB OF TRUST MODEL

• In the proposed Vehicular Web of TRUST (VWT)
  environment the each vehicle possess a Trust
  Module with a TPM hardware module inside the
  vehicle.

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Levels of TRUST

• 1. Trust between TPMs and Vehicle Sensors
• 2. Trusted Medium (DSRC)
• 3. Trust between Vehicle to Vehicle (V2V)
• 4. Trust between Vehicle to Infrastructure (V2I)

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Levels of TRUST

1. Trust between TPMs and Vehicle Sensors

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Levels of TRUST

• 2. Trusted Medium (DSRC)
• At the second level, the role of the medium is
  important, dedicated short range communication
  (DSRC) frequency band is used for all types of
  communication in VANET.
• DSRC provides multiple channels and its
  transmission ranges from 5.850 to 5.925 GHz. DSRC
  are divided into seven channels and each channel
  range is 10 MHz.
• Every vehicle in the network receives messages
  from other vehicles or from infrastructure. A
  secure and trusted content of message is the
  major concern of the users.

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Levels of TRUST

• 3. Trust between Vehicle to Vehicle (V2V)

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Levels of TRUST

• 4. Trust between Vehicle to Infrastructure (V2I)

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Direct Anonymous Attestation (DAA)

• DAA is a digital group signature scheme and it
  was originated by Brickell, Camenisch and Chen.
• It provides the facility to a third party to
  validate the TPM, and check whether the user
  platform is genuine.
• In VANET environment, DAA can be considered for
  attesting a vehicle platform, and at the same
  time protecting the privacy of the user. Using of
  DAA we can develop the four level of trust in
  vehicular communication.

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Conclusion

• Reducing the death rate, avoiding congestion on
  roads and makes comfortable journey some of key
  objective of vehicular network.
• Security and trust are becoming increasingly key
  challenges issues in vehicular network.
• TPM hardware module is the key module of trusted
  computing and that supports to develop trust in
  vehicular communication environment.
• In this paper we have presented new model for web
  of trust within vehicular network and this model
  are based on four level of trust.

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• Please download complete paper from
• IEEEE website
• ResearchGate

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