Security In Wireless Sensor Network

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Security In Wireless Sensor Network

• CHIA-LING YANG
• CSCI 5235

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Abstract

• Wireless sensor networks are a device that can
  collect data and its size can range from a few
  hundred sensors to a few hundred thousand or
  possibly more 1. As WSNs can be data
  collection, coordinated analysis, and automated
  event correlation 2, they can be applied to a
  wide range of purposes such as temperature
  monitoring, vehicle monitoring, animal
  monitoringetc. These sensors, different from
  traditional networks, are deployed over our
  environment and it is more vulnerable to security
  attacks than wired networks, due to the broadcast
  communication 3. Therefore, security issues
  become extremely important. In this paper,
  different kinds of threats in WSN are introduced
  and it indicates that how they can be avoided and
  protected by security services in WSN.

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Outline

• Section I
• Introduction
• Section II
• Wireless Sensor Networks
• What is WSN?
• Where can it be used for?
• Section III
• Threats and Attacks in Wireless Sensor Networks
• Passive Information Gathering
• False Node insertion
• Sybil Attack
• Wormhole Attack

• Section IV
• Security Goals in Wireless Sensor Networks
• Data Confidentiality
• Data authentication
• Data Integrity
• Data Freshness
• Robustness
• Section V
• Security Method LEAP
• Individual Key
• Group Key
• Cluster Key
• Pairwise Shared Key
• Section VI
• Conclusion

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Wireless Sensor Networks
From http//arri.uta.edu/acs/networks/WirelessSen
sorNetChap04.pdf
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Threats and Attacks (1)

• Passive Information Gathering
• Physical location
• Message
• Use encryption to prevent it
• False Node insertion
• False data
• Inject False Messages
• Use authentication to prevent it

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Threats and Attacks (2)
Sybil Attack
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Threats and Attacks (3)
Wormhole Attack
From http//csie.npu.edu.tw/itaoi/6/B/6.pdf
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Security Goals

• Data Confidentiality
• Data authentication
• Data Integrity
• Data Freshness
• Robustness

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Security Method LEAP

• Localized Encryption and Authentication Protocol
• Four types of keys
• Individual key
• Each node has a unique key shared with the base
  station
• Cluster key
• A node has the key shared with all of its
  neighboring nodes
• Pairwise key
• A node has the key shared with its immediate
  neighbors.
• Group key
• This is a globally shared key that is used by
  the base station for encrypting messages that are
  broadcast to the whole group.3

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Reference

• 1 Roberto Di Pietro, Luigi V. Mancini, and
  Alessandro Mei, Energy efficient node-to-node
  authentication and communication confidentiality
  in wireless sensor networks. Springer Science
  Business Media, LLC, 19 May 2006.
• 2 Adrian Perrig, John Stankovic, and David
  Wagner, Security in Wireless Sensor Netoworks,
  Communications of The ACM, Vol. 47 No. 6, pp.
  53-57, June 2004.
• 3 Xiuli Ren, Security Methods for Wireless
  Sensor Networks, in International Conference on
  Mechatronics and Automation, 2006, pp. 1925-1930.
• 4 Eric Sabbah, Adnan Majeed, Kyoung-Don Kang,
  Ke Liu, and Nael Abu-Ghazaleh, An
  application-Driven Perspective on Wireless Sensor
  Network Security,
• 5 F. L. LEWIS, Wireless Sensor Networks,
  http//arri.uta.edu/acs/networks/WirelessSensorNet
  Chap04.pdf.