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A Survey on Face-based Cryptographic Key Generation
Thao Dang,Deokjai Choi (사)한국스마트미디어학회 2020 스마트미디어저널 Vol.9 No.2
Derivation cryptographic keys from human biometrics opens a new promising research area when it can be used efficiently for not only verification or recognition tasks, but also symmetric-key based applications. Among existing biometric traits, face is considered as the most popular biometrics since facial features are informative and discriminative. In this paper, we present a comprehensive survey of Face-based key generation (FKGS). First, we summarize the trend of FKGS researches and sum up the methods which play important roles in the proposed key generation systems. Then we present the evaluation and the general performance analysis; from that, we give a discussion about the advantages and disadvantages of surveyed studies to clarify the fundamental requirements and the main challenges when implementing FKGS in practice. Finally, an outlook on future prospects is given
Secure and Privacy Enhanced Gait Authentication on Smart Phone
Hoang, Thang,Choi, Deokjai Hindawi Publishing Corporation 2014 The Scientific World Journal Vol.2014 No.-
<P>Smart environments established by the development of mobile technology have brought vast benefits to human being. However, authentication mechanisms on portable smart devices, particularly conventional biometric based approaches, still remain security and privacy concerns. These traditional systems are mostly based on pattern recognition and machine learning algorithms, wherein original biometric templates or extracted features are stored under unconcealed form for performing matching with a new biometric sample in the authentication phase. In this paper, we propose a novel gait based authentication using biometric cryptosystem to enhance the system security and user privacy on the smart phone. Extracted gait features are merely used to biometrically encrypt a cryptographic key which is acted as the authentication factor. Gait signals are acquired by using an inertial sensor named accelerometer in the mobile device and error correcting codes are adopted to deal with the natural variation of gait measurements. We evaluate our proposed system on a dataset consisting of gait samples of 34 volunteers. We achieved the lowest false acceptance rate (FAR) and false rejection rate (FRR) of 3.92% and 11.76%, respectively, in terms of key length of 50 bits.</P>
Biometrics-based Key Generation Research: Accomplishments and Challenges
Ha, Lam Tran,Choi, Deokjai THE KOREAN INSTITUTE OF SMART MEDIA 2017 스마트미디어저널 Vol.6 No.2
The security and privacy issues derived from unsecurely storing biometrics templates in biometric authentication/ recognition systems have opened a new research area about how to secure the stored biometric templates. Biometrics-based key generation is the newest approach that provides not only a mechanism to protect stored biometric templates in authentication/ recognition systems, but also a method to integrate biometric systems with cryptosystems. Therefore, this approach has attracted much attention from researchers worldwide. A review of current research state to summarize the achievements and remaining works is necessary for further works. In this study, we first outlined the requirements and the primary challenges when implementing these systems. We then summarize the proposed techniques and achievements in representative studies on biometrics-based key generation. From that, we give a discussion about the accomplishments and remaining works with the corresponding challenges in order to provide a direction for further researches in this area.
Priagung Khusumanegara,Rischan Mafrur,Deokjai Choi 보안공학연구지원센터 2015 International Journal of Multimedia and Ubiquitous Vol.10 No.8
Facebook has grown tremendously and becomes one of the most popular social networks in the world. Along development of smartphone, Facebook also provides Facebook application in order that smartphone users can easily to access Facebook using their smartphone. However, some of smartphone users prefer to access Facebook through Facebook mobile website rather than Facebook application. In this research, we want to investigate "Why smartphone users accessing Facebook through Facebook mobile website?”. In this study, we collected smartphone data of 46 participants and analyzed factors affecting smartphone users prefer to access Facebook through Facebook mobile website rather than Facebook application. The results showed that battery and privacy awareness significantly affected the decision of smartphone users to access Facebook whether through Facebook mobile website or Facebook application.
홍기원 ( Kiwon Hong ),최덕재 ( Deokjai Choi ) 한국정보처리학회 2004 한국정보처리학회 학술대회논문집 Vol.11 No.2
SCTP는 오류 및 플로우 제어 등 많은 부분에 있어서 TCP의 방식을 사용한 표준화된 전송 프로토콜이다. 현재 네트워크는 무선망으로 확장되는 과정에서 유선망과 무선망이 혼합되어지는 형태로 진화하고 있으며, 이러한 혼합망에서 TCP에 대한 성능 향상 기법에 대한 연구가 활발히 이루어지고 있다. 그러나 기존의 연결 지향적으며 신뢰성 있는 데이터 전송을 위한 전송 프로토콜인 TCP를 대체할 차세대 전송 프로토콜로 부각되고 있는 SCTP에 대한 성능향상 연구는 이루어지고 있지 않고 있어 본 논문에서는 유·무선 혼합망에서 기존의 TCP와 성능비교를 통해 성능 평가를 실시하여 유·무선 혼합망 에서의 SCTP 성능을 살펴보았다.