언제 어디서나 네트워크에 접근하여 경제적이고 편리하게 정보를 교환할 수 있는 유비쿼터스 환경이 제대로 갖추어지기 위해서는 보안 기술이 필수적인 요소이다. 기존 디바이스보다 작고, 경량이며, 값싸고, 이동 가능한 디바이스를 필요로 하는 유비쿼터스 컴퓨팅 및 네트워크 환경에서는 기존의 보안 기술을 그대로 적용하기는 어렵다. 그러므로 정보보호 기술의 핵심인 암호 기술도 유비쿼터스 환경에 적합한 형태로 변화 및 발전되어야 한다. 본 고에서는 유비쿼터스 환경에 적용하기 위해 개발되고 있는 최신 암호 기술에 대해 살펴본다. 특히 유비쿼터스 환경을 위한 구체적인 첫걸음인 RFID와 USN 시스템에 적용하기 위해 개발되고 있는 암호 기술과 앞으로의 환경 변화에서 더욱 중요성이 부각되고 있는 개인의 프라이버시 보호를 위한 암호 기술을 중심으로 분석한다.
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