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3GPP 접속 망에서 ID 기반 암호를 이용한 신원 프라이버시 개선 연구
정용현 ( Yonghyun Jung ),이동훈 ( Dong Hoon Lee ) 한국정보처리학회 2016 정보처리학회논문지. 컴퓨터 및 통신시스템 Vol.5 No.10
Identity Privacy issues such as exposures of IMSIs(International Mobile Subscriber Identities) in access network have been consistently raised throughout GSM, UMTS, LTE in 3GPP. The 3GPP specification uses temporary identities instead of IMSI to ensure anonymity of the user. Even if temporary identities are disclosed, Identity Privacy may be maintained at a safe level by security policies such as no linkability and periodic update. But in case of IMSI, it cannot be changed even though it is exposed. There still exist some situations that IMSI is used in clear text for the authentication. Therefore, a protective mechanism for the identity confidentiality is needed. In this paper we propose a protocol based on IBE(Identity-based Encryption) to protect permanent identities in access network. By simplifying the scheme, this protocol has minimized the system impact on current 3GPP environment. And this scheme can be applied to all kind of permanent identities and 3GPP AKA(Authentication and Key Agreement) protocols in access network.
실험계획법을 이용한 하중조절형 시트벨트의 충돌성능 최적화 연구
유완동(Wandong Yoo),김치호(Chiho Kim),정용현(Yonghyun Jung) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11
Adaptive seatbelt is proposed to meet both NHTSA full frontal NCAP and IIHS small overlap crash condition. The principle of this seatbelt is two stage of loadlimiter level which is controlled by micro gas generator. Those loadlimiter level can be switched with a detecting of crash mode. After classification of crash mode, ECU send a switching signal based on the crash algorithm.