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Context-Aware Security Service in the Cloud Computing Environment
Mokdong Chung,Jaehyuk Choi,Hyundong Lee,Shi-Kook Phyoo 한국멀티미디어학회 2011 한국멀티미디어학회 국제학술대회 Vol.2011 No.-
Authentication model in the wireless environment has many security vulnerabilities. However, there is no adapting standard method in this field. To solve these problems, we suggest a flexible integrated authentication and access control facility using context-awareness, integrated authentication, access control, and OSGi service platform in the cloud computing environment. We also utilize Fuzzy Logic and MAUT (Multi-Attribute Utility Theory) to handle diverse contexts properly and to determine the appropriate security level. We could provide flexible and secure seamless security service by user context in the cloud computing environment using the proposed system.
다중변수 기반 에이전트 중재 전자상거래 협상모델 및 프레임워크 설계
정목동(Mokdong Chung) 한국정보과학회 2001 정보과학회논문지 : 소프트웨어 및 응용 Vol.28 No.11
오늘날의 1세대 구매 에이전트는 상품의 전체 특징 변수(attribute)에 대해서보다는 주로 판매자들이 제시한 가격만 비교해서 구매행위를 대행해 주고 있으며, 간혹 가격 이외의 변수에 대한 비교를 해주는 에이전트의 경우에도 협상(negotiation) 과정에서 전체 변수를 적절하게 고려해주는 협상 모델은 찾아보기 힘들다. 따라서 전자 상거래의 협상 모델(negotiation model)을 가격 변수뿐만 아니라 상품의 전체 변수로 확장 시켜 주는 것이 절실히 요구되고 있다. 본 논문에서는 유틸리티(utility) 이론과 간결한 휴리스틱스(simple heuristics)에 바탕을 두어서 가격, 상품의 특성, 보장 기간, 서비스 정책 등에 대해서 협상을 벌이는 에이전트 중재에 의한 전자 상거래 협상 모델을 제시하고, 이를 구현하는 프레임워크 Pmart원시 시스템에 관해서 논한다. Pmart는 객체 지향 기술에 바탕을 둔 소프트웨어 재사용과 확장성을 제공하고 있으며, 네트워크 투명성과 플랫폼 독립성을 위하여 Java와 CORBA를 이용하여 구현하고 있다. Today's first generation shopping agent is limited to comparing merchant offerings usually on price instead of their full range of attributes. Even in the full range comparison, there is not a good model which considers the overall features in the negotiation process. Therefore, the negotiation model needs to be extended to include negotiations over the more attributes. In this paper, we propose a negotiation model in the agent-mediated electronic commerce to negotiate over prices, product features, warranties, and service policies based on utility theory and simple heuristics. We will describe a prototype agent-mediated electronic commerce framework called Pmart. This framework provides the software reuse and the extensibility based on the object-oriented technology. It is implemented on Windows-based platforms using Java and CORBA for the network transparency and platform independence.
정목동(Chung, Mokdong) 한국정보보호학회 2006 情報保護學會誌 Vol.16 No.2
본 고에서는 상황 인식(Context-Awareness)의 의미와 관련 기술을 소개하고, 상황 인식에 바탕을 두고 있는 상황 인식 보안(Context-Aware Security) 기술 동향을 살펴본 다음 그 응용 예를 알아본다. 상황 인식에 관한 연구는 국내외적으로 상당한 연구가 진행 되어 왔지만, 상황 인식 기술을 컴퓨터 보안에 응용하는 상황 인식 보안 연구는 최근에야 시작 되었기 때문에 본 고를 준비하는데 어려움이 있었다.
Design and Implementation of Context-Aware Integrated Single Sign-On in Cloud Computing Environment
Hyundong Lee,Mokdong Chung 한국멀티미디어학회 2010 한국멀티미디어학회 국제학술대회 Vol.2010 No.-
In cloud computing service environment, various security issues are raised such as authentication and access control. In particular, the integrated management and control, authentication, and access control model are required to access various resources in cloud computing environment. To solve these problems, we introduce Context-Aware Integrated Single Sign-On (SSO) model in this paper. And we try to show a flexible and convenient authentication system.
Gerber, Christian,Chung, Mokdong Korea Information Processing Society 2016 Journal of information processing systems Vol.12 No.1
In this paper, we propose a method to achieve improved number plate detection for mobile devices by applying a multiple convolutional neural network (CNN) approach. First, we processed supervised CNN-verified car detection and then we applied the detected car regions to the next supervised CNN-verifier for number plate detection. In the final step, the detected number plate regions were verified through optical character recognition by another CNN-verifier. Since mobile devices are limited in computation power, we are proposing a fast method to recognize number plates. We expect for it to be used in the field of intelligent transportation systems.
( Christian Gerber ),( Mokdong Chung ) 한국정보처리학회 2016 Journal of information processing systems Vol.12 No.1
In this paper, we propose a method to achieve improved number plate detection for mobile devices by applying a multiple convolutional neural network (CNN) approach. First, we processed supervised CNN-verified car detection and then we applied the detected car regions to the next supervised CNN-verifier for number plate detection. In the final step, the detected number plate regions were verified through optical character recognition by another CNN-verifier. Since mobile devices are limited in computation power, we are proposing a fast method to recognize number plates. We expect for it to be used in the field of intelligent transportation systems.
Context-Aware Security System for the Smart Phone-based M2M Service Environment
( Hyundong Lee ),( Mokdong Chung ) 한국인터넷정보학회 2012 KSII Transactions on Internet and Information Syst Vol.6 No.1
The number of smart phone users is rapidly growing due to recent increase in wireless Internet usage, development of a wide variety of applications, and activation of M2M (Machine to machine) services. Although the smart phone offers benefits of mobility and convenience, it also has serious security problems. To utilize M2M services in the smart phone, a flexible integrated authentication and access control facility is an essential requirement. To solve these problems, we propose a context-aware single sign-on and access control system that uses context-awareness, integrated authentication, access control, and an OSGi service platform in the smart phone environment. In addition, we recommend Fuzzy Logic and MAUT (Multi-Attribute Utility Theory) in handling diverse contexts properly as well as in determining the appropriate security level. We also propose a security system whose properties are flexible and convenient through a typical scenario in the smart phone environment. The proposed context-aware security system can provide a flexible, secure and seamless security service by adopting diverse contexts in the smart phone environment.
Identity and Access Management using OSGi Service Platform in Cloud Computing
Youngmin Jung,Mokdong Chung 한국멀티미디어학회 2010 한국멀티미디어학회 국제학술대회 Vol.2010 No.-
??In this paper, we propose an identity and access management system using OSGi service platform in cloud computing environment. Whenever we use diverse services of cloud computing environment, we should provide convenience of authentication using single sign on. We suggest an efficient access control technique using RBAC and solution of privacy protection. And we also suggest solution of seamless cloud computing services at any time including fetches and updates. The solution will be designed and implemented using OSGi service platform. The proposed model is expected to be able to efficiently and securely manage identity and access.