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아이트래킹을 이용한 안전한 패스워드 입력 방법에 관한 연구 - 숄더 서핑 공격 대응을 중심으로

A Study of Secure Password Input Method Based on Eye Tracking with Resistance to Shoulder-Surfing Attacks

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주제분류컴퓨터학

초록

시선 기반 입력은 사용자가 문자를 입력하였을 때, 입력이 제대로 되었음을 확인하기 위한 피드백을 제공한다. 이미 많은 연구에서 적절한 피드백이 시선 기반 입력의 사용성을 높이는 효과가 있음을 증명하였다. 그러나 피드백을통해 입력된 문자에 대한 정보가 노출되어 숄더 서핑 공격의 대상이 될 수 있다. 적절한 피드백을 활용하여 기존의사용성을 유지하며 보안성을 향상시킬 필요가 있다. 본 연구에서는 숄더 서핑 공격에 대응하기 위한 새로운 시선 기반 입력 방법인 FFI(Fake Flickering Interface)를 제안한다. 또한, 실험 및 설문을 통해 기존의 피드백을 활용한 시선 기반 입력과 비교하여 FFI의 사용성과 보안성을 평가한다.

Abstract

The gaze-based input provides feedback to confirm that the typing is correct when the user types the text. Many studieshave already demonstrated that feedback can increase the usability of gaze-based inputs. However, because the informationof the typed text is revealed through feedback, it can be a target for shoulder-surfing attacks. Appropriate feedback needs tobe used to improve security without compromising the usability of the gaze-based input using the original feedback. In thispaper, we propose a new gaze-based input method, FFI(Fake Flickering Interface), to resist shoulder-surfing attacks. Throughexperiments and questionnaires, we evaluated the usability and security of the FFI compared to the gaze-based input usingthe original feedback.

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