IEEE 802.15.3 고속률 WPAN(Wireless Personal Area Networks)은 네트워크 구성 시 인증을 받은 노드들에게만 통신 권한을 부여함으로써 보안성을 높였다. 그러나 IEEE 802.15.3 WPAN에서 제안한 인증 방법은 사전에 각 노드들이 중앙 집중적인 키 관리자로부터 오프라인 상으로 인증키를 분배 받는 것을 가정으로 하고 있다. 이 같은 가정은 WPAN이 무선 Ad Hoc 네트워크로서 중앙 관리 노드가 부재하고 위상 변화가 유동적인 특성을 고려하지 못한 것으로 WPAN의 확장성을 감소시킨다. 따라서 본 논문에서는 WPAN의 노드들이 온라인을 통해 협력적으로 인증키를 생성하는 분산 인증키 관리 방법을 제안한다. 이 방법은 WPAN 네트워크에 확장성을 제공할 뿐 아니라 마스터 노드에 대한 보안 의존성을 감소시켜 인증 서비스의 가용성을 증대시킨다.
KSP Keywords
Ad hoc, IEEE 802.15.3, Wireless personal area network(WPAN)
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