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Security Improvement of Key Management Protocols in Hierarchical Wireless Sensor Network

Mokhtari Ardakani, Ehsan | 2010

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 40857 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Salmasizadeh, Mahmood; Mohajeri, Javad
  7. Abstract:

  8. Wireless sensor networks (WSNs) use many tiny sensors to monitor phenomena such as temperature, humidity, brightness and traffic, and then transmit this information to a base station using wireless channels. WSNs find applications in military, ecological, urban and health related areas. Hierarchical wireless sensor networks are kind of sensor networks that use communication entities with different capabilities in terms of energy, processing power, bandwidth, communication range and etc. In this thesis, an introduction to WSNs and their applications, characteristics and designing factors is expressed. It continues on studying the infrastructures and the role of cryptography in enhancing the security level in these networks. After having an overview on the key management protocols as the most practical and effective way of security enhancement in sensor networks, we present a key management scheme including key distribution and key revocation schemes for WSNs with multiple base stations by a little change in the basic key management scheme which includes only one base station. Finally, we investigate its strengths and weakness, and offer our proposal for continuation of the project.

  9. Keywords:
  10. Security ; Key Management ; Wireless Sensor Network ; Internet Protocol Security ; Key Distribution ; Key Revocation

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