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NOVEL DYNAMIC KEY MANAGEMENT FOR SECURE CONTINUOUS ROAMING IN WIRELESS LAN

 

TITLE NOVEL DYNAMIC KEY MANAGEMENT FOR SECURE CONTINUOUS ROAMING IN WIRELESS LAN
AUTHOR MANOP KALONG
DEGREE MASTER OF SCIENCE PROGRAMME IN COMPUTER SCIENCE
FACULTY FACULTY OF SCIENCE
ADVISOR SUDSANGUAN NGAMSURIYAROJ
CO-ADVISOR VASAKA VISOOTTIVISETH
SIWARUK SIWAMOGSATHAM
 
ABSTRACT
Key management is one of the most critical security issues in wireless networks. It includes key related operations such as key generation, key distribution and re-keying over insecure communication. These operations have much overhead since they all have to be done in a secure way. The new standard of wireless LANs introduces the technique of secure dynamic key management. However, using the dynamic key is very restricted and its lifetime is very short. In addition, the dynamic key must be initialized by a central authority before that key can be sent to all communicating hosts. Subsequently, the key must be modified after every single use. This thesis proposes a new dynamic key management mechanism in wireless networks. It provides both fast authentication, and secure continuous roaming. The work is evaluated using OMNet++ network simulator tool which simulates a simple intra-roaming scenario and the roaming performance is measured for four experiments having different varying parameters including moving speed, background workload, the number of clients or client density and the combined traffic. The experiment results show that the key management protocol outperforms the standard IEEE802.11i for all testing parameters and gives high scalability as well.
KEYWORD KEY MANAGEMENT / DYNAMIC KEY WIRELESS SECURITY / WIRELESS LAN / ROAMING

 

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