무선 센서네트워크는 넓은 지역에 무선 네트워크로 설치된 센서들을 사용하여, 온도 습도 등의 환경을 감지하여 환경 감시, 대상 추적, 환자 모니터링, 군사적 목적 등 매우 다양한 분야의 서비스에 활용된다. 센서네트워크도 기존 네트워크와 마찬가지로 네트워크 보안 기능을 필요로 한다. 그러나 센서네트워크에 사용되는 장비가 사용할 수 있는 자원에 제약이 많아, 기존의 암호기술을 적용하는데 어려움이 있었다. 그러나, 최근의 연구결과들은 경량화 구현 기술을 적용하여 기존 네트워크에 적용하여 오던 보안 기술들을 센서네트워크에 적용하는 것이 실효성이 있다는 것을 보여준다. 본 논문에서는 대칭키 암호 기능과 비대칭키 암호 기능을 각각 소프트웨어와 하드웨어로 구현하여 성능을 측정한 결과를 비교한다.
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