최근들어 Radio Frequency Identification (RFID) 태그가 다수의 상품에 부착되고 절러 분야에 적용되기 시작했지만, 비용문제로 인해 인증이나 암호화 같은 보안기능은 고려하지 않고 있다. 보안 기능이 없는 RFID시스템은 개인정보 노굴, 불법 리더의 접근, 위조 태그의 남용과 같은 심각한 부작용을 초래하지만 현 단계에서는 보안기능을 적용하기가 쉽지않다. 절러 기술을 따르는 수동형 태그중 EPCglobal의 EPC Class 1과 Class 1 Generation 2(C1G2)는 산업계의 여러 분야에서 특히, supply-chain 모델에서 사실상 국제표준으로 여겨진다. EPC Class1 수준의 태그는 자체 밧데리를 가지지 않는 수동형 태그이고, 암호 프리미티브를 적용한 알고리즘이나 프로토콜은 제공하지 않는다. EPC Class1 과 EPC C1G2의 유일한 보안 대책으로는 태그를 영원히 동작하지 못하게 하는 Kill 기능이 있다. Kill을 수행한 태그는 RFID 태그로서의 의미가 사라진다. 본 논문에서는 Kill 기능에 대한 EPC Class1 시스템의 취약성을 보이고 또한, EPC C1G2 시스템에서 Kill 관점에서의 보안성을 분석한다.
KSP Keywords
Class 1, EPC C1G2, Passive radio frequency identification(RFID), Radio Frequency(RF), supply chain
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