특성 벡터를 이용한 얼굴 인증 시스템에서 변환된 생체 정보 데이터의 가역성에 대한 보안 문제 분석
The Security Problem Analysis for Reversibility of Transformed Biometric Information Data on Eigenvector-based Face Authentication
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초록
생체 정보 인식은 사용자의 인증을 위한 수단으로써 많은 연구가 진행 되어 오고 있다. 그 중 얼굴 인식 분야에서 특성 벡터를 이용한 사용자의 얼굴 인식 기법이 존재한다. 이 기법은 전체 얼굴 데이터 집합에서 벡터 공간을 만들어 내고 생체 정보 템플릿을 사상시켜 추상화된 데이터를 생성하는 기법이다. 그러나 생체 정보의 보안성을 일컫는 개념인 취소 가능한 특성(Cancelable Feature)을 기대 할 수 는 없다. 이 논문에서는 특성 벡터를 이용한 얼굴 인증 시스템에서 변환된 생체 정보 데이터의 복원에 대한 보안 문제를 지적하고, 예상 가능한 공격 시나리오를 실험을 통해 보인다.
Abstract
The biometrics has been researched as a means for authenticating user’s identity. Among the biometrics schemes for face recognition, the eigenvector-based schemes, which use eigenvector made from training data for transforming test data to abstracted data, are widely adopted. From those schemes, however, it is hard to expect cancelable feature, which is a general concept for security in the biometrics. In this paper, we point out the security problem that is the recovery of valuable face information from the abstracted face data and consider a possible attack scenario by showing our experiment results.
참고문헌 (22)
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