17HH2100, Development of Biometrics-based Key Infrastructure Technology for On-line Identification ,
Sangrae Cho
Abstract
바이오 인증 기술은 키를 저장하는 별도 저장매체의 소유 및 패스워드의 암기가 불필요하여 간편 인증으로 활용성이 높다. 하지만 개인의 고유 바이오 정보가 유출될 경우, 고유 바이오 정보는 재사용이 불가능하다. 본 논문에서는 대표적인 바이오 정보인 지문 정보에 기반을 둔 프라이버시 보호형 템플릿 구성 방법을 제시한다. 제안 방법은, 지문 정보를 암호 조합에 기반을 둔 형태로 외부로부터 안전하게 숨기는 템플릿을 제공하는 것이다. 거짓 특징점을 이용하여 고유 지문 정보를 은닉하는 지문 퍼지볼트(Fuzzy Vault)와 비교하여 약 50% 이상의 템플릿 크기의 감소 효과를 얻을 수 있다. 제안 기법은 또한, 지문 퍼지볼트와는 다르게, 상관관계 공격에 강인하다. 구체적인 파라미터 분석을 통하여, 제안한 방법은 안전성과 효율성 측면에서 우수함을 보인다.
KSP Keywords
Fuzzy vault
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