얼굴과 사용자 입력정보를 이용하여 안전한 키를 생성하는 방법
A Method for Generating Robust Key from Face Image and User Intervention
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초록
바이오해싱 기법은 생체 인식 템플릿으로부터 효과적으로 비트스트링 키를 생성할 수 있지만, 토큰 같은 사용자 입력요소에 대한 의존도가 높아 토큰 도난 시 성능이 하락한다. 이러한 한계점을 개선하기 위하여, 본 논문에서는 얼굴 사진과 사용자 입력정보로부터 안전한 키를 생성하는 기법을 제시한다. 바이오해싱 기법과 GPT 기법을 사용하여, 인증 시사용자 입력정보에 대한 의존도를 조정하고, 충분한 길이의 안전한 키를 생성하도록 구성하였다. 제시한 기법을 입증하기 위하여 다양한 실험을 진행하고 결과를 보였다.
Abstract
Even though BioHashing scheme can effectively extract binary string key from analog biometrics templates, it shows lower performance in stolen-token scenario due to dependency of the token. In this paper, to overcome this limitation, we suggest a new method of generating security key from face image and user intervention. Using BioHashing and GPT schemes, our scheme can adjust dependency of PIN for user authentication and generate robust key with sufficient length. We perform various experiments to show performance of the proposed scheme.
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