• 한국항행학회논문지
• /
• 제17권4호
• /
• pp.442-448
• /
• 2013

제어계측 시스템과 정보시스템은 서로 차이가 있으며 두 시스템의 보안설계가 다르다. 이러한 문제점을 해결하기 위해 제어계측 시스템의 보안통제를 설계하기 위해서는 보안통제가이드를 기본으로 한 정책 설정 및 모델링 작업의 필요성이 대두되고 있다. 본 논문에서는 제어계측시스템 환경에서 사이버 보안 통제를 지원하기 위하여 보안규제 가이드를 기반으로 역할, 보안 통제 별 및 문서간의 관계스키마를 설계하였고, 설계된 스키마는 보안규제가이드를 준수하기 위한 사이버 보안 통제 구축 지원 시스템의 계획, 설계, 구현을 지원 하는 데이터베이스와 내용으로 활용이 가능하다. 이후 제안된 스키마를 활용하여 시스템 프로세스를 설계하고 제어계측 시스템에 최적화된 보안통제지원 시스템을 개발한다.

• Nuclear Engineering and Technology
• /
• 제44권8호
• /
• pp.919-928
• /
• 2012

The applications of computers and communication system and network technologies in nuclear power plants have expanded recently. This application of digital technologies to the instrumentation and control systems of nuclear power plants brings with it the cyber security concerns similar to other critical infrastructures. Cyber security risk assessments for digital instrumentation and control systems have become more crucial in the development of new systems and in the operation of existing systems. Although the instrumentation and control systems of nuclear power plants are similar to industrial control systems, the former have specifications that differ from the latter in terms of architecture and function, in order to satisfy nuclear safety requirements, which need different methods for the application of cyber security risk assessment. In this paper, the characteristics of nuclear power plant instrumentation and control systems are described, and the considerations needed when conducting cyber security risk assessments in accordance with the lifecycle process of instrumentation and control systems are discussed. For cyber security risk assessments of instrumentation and control systems, the activities and considerations necessary for assessments during the system design phase or component design and equipment supply phase are presented in the following 6 steps: 1) System Identification and Cyber Security Modeling, 2) Asset and Impact Analysis, 3) Threat Analysis, 4) Vulnerability Analysis, 5) Security Control Design, and 6) Penetration test. The results from an application of the method to a digital reactor protection system are described.

• 한국실내디자인학회논문집
• /
• 제19권6호
• /
• pp.249-256
• /
• 2010

For guaranteeing for security of nuclear power plant, ergonomic factors have been applied to design of main control room, core area for management and control of nuclear power plant, but design elements for performance of operators have been ignored. As the behaviors of operators are important for security of nuclear power plant, space design which makes them pleasant psychologically and makes them maintain attention on security equipments ceaselessly is required. Therefore, the purpose of this study is to analyze space characteristics of main control rooms according to regulations of nuclear power plant and general guidelines of space design, and to offer basic data for designing of main control room which makes operators pleasant psychologically and physically. At first, theoretical issues related with design of main control room are reviewed and several premises of space are developed by abstracting design elements from common space and regulations of nuclear power plant and, then integrating each design elements interactively. In short, the improvement of system environment based on human-machine interface space has brought about perceptual, cognitive, and spatial changes and has realized next generation of main control rooms. And, differences and similarities between ordinary space and main control room, which ergonomic sizes and regulations are applied and is VDT environment based on LDP, are discussed in relation to 13 design elements and 17 space premise.

• 한국산학기술학회:학술대회논문집
• /
• 한국산학기술학회 2009년도 춘계학술발표논문집
• /
• pp.421-424
• /
• 2009

SCADA control systems and protocols are developed based on reliability, availability, and speed but with no or little attention paid to security. Specifically in Modbus protocol, there are inherent security vulnerabilities in their design. The lack of common security mechanisms in the protocol such as authentication, confidentiality and integrity must be addressed. In this paper, security vulnerabilities of Modbus-based SCADA controls systems will be studied. An in-depth analysis of the message frame formats being sent between master and slave will be discussed to expose the security vulnerabilities. This will enable SCADA users to find ways to fix the security flaws of the protocol and design mitigation strategies to reduce the impact of the possible attacks. Security mechanisms are recommended to further enhance the security of SCADA control systems.

• 융합보안논문지
• /
• 제11권4호
• /
• pp.43-49
• /
• 2011

웹 기반 의료정보는 많은 편리성을 제공하지만 공개된 네트워크 환경에서 나타나는 보안 취약성을 해결하지 않은 채 정보노출의 위험속에 사용이 확대되고 있다. 웹 기반 의료정보 접근시 보안문제에 대한 안전한 방법론 강구없이 기술만 발전시키려한다면 또 다른 위협의 요소를 증가시키는 것이다. 따라서 웹에 기반한 정보활용 보안대책 으로서 웹 기반 의료정보 접근제어 보안 메커니즘 기반 설계가 필요하다. 본 논문은 소프트웨어 아키텍쳐 설계사상을 기반으로 하여 의료정보시스템 접근제어 보안 메커니즘 기반을 설계 하였다. 그 방법론은 새로운 설계절차를 도출하고 아키텍쳐를 설계하며 기능 메커니즘 알고리즘을 구성하는 것 이다. 이를위해서는 웹 기반 다중 환자 정보 접근제어를 위한 보안 아케텍쳐 인프라스트럭가 필요하다. 제안하는 소프트웨어아케텍쳐는 소프트웨어 프레임워크를 도출하고 기능 메커니즘을 구성하는 기반에 관한 구조도를 도출했다. 제안된 시스템를 활용하여 의료정보 어플리케이션을 설계할때 의료정보 사용자는 실시간으로 데이터를 검색하면서도 통합화된 접근제어알고리즘의 보장하에서 정보관리 안전성을 확보하는 시스템 설계가 가능하다.

• International journal of advanced smart convergence
• /
• 제5권3호
• /
• pp.66-71
• /
• 2016

Smart building gate security control system using smartphone integrated with near field communication (NFC) has become part of daily life usage these days. The technology change in replacing RF NFC device using visible light communication technology based approach growing faster in recent days. This paper propose a design and development of gate security control system using color code based user authentication ID generation as part of an intelligent access control system to control automatic door open and close. In this approach gate security access control use the recent visible light communication technology trends to transfer the user specific authentication code to door access control system using color code on smartphone screen. Using a camera in the door access control system (ACS), color codes on smartphone screens are detected and matched to the database of authenticated user to open the door automatically in gate security system. We measure the visual light communication technology efficiency as a part of the research and the experiments have revealed that more than 95% users authenticated correctly at the suggested experiment environment on gate security control system.

• 디지털콘텐츠학회 논문지
• /
• 제1권1호
• /
• pp.23-37
• /
• 2000

EDI는 은행업무, 무역, 의학, 출판 등의 다양한 활동이나 사업에 관련된 메시지를 컴퓨터들간에 상호 교환한다는 개념이다. 그러므로, 보안성, 신뢰성 및 특수 기능성이 EDI 시스템의 절대적 요구사항이다. 이러한 요구사항 중 보안성에 대한 요구사항을 만족시키기 위한 접근제어 모델을 설계하고자 한다. 정보시스템에 있어서의 접근제어는 실체에 대한 모든 접근은 보안정책에 의해서 정해진 접근모드나 규칙에 따라 발생한다는 것을 보장하기 위한 것이다. 본 논문에서는, 접근제어 모델을 위한 보안정책을 신분기반 정책, 규칙기반 정책, 직무기반 정책 측면에서 제시한다. 정의한 보안정책을 수행하기 위해서 유도된 접근제어 규칙과 오퍼레이션에 기초한 안전한 EDI 서비스를 제공하기 위한 접근제어 모델을 설계한다. 제안한 접근제어 모델은 EDI 메시지에 대한 무결성, 비밀성 및 흐름제어를 제공한다.

• IEIE Transactions on Smart Processing and Computing
• /
• 제3권2호
• /
• pp.65-73
• /
• 2014

An overall responding security-centered framework is necessary required for infringement accidents, failures, and cyber threats. On the other hand, the correspondence structures of existing administrative, technical, physical security have weakness in a system responding to complex attacks because each step is performed independently. This study will recognize all internal and external users as a potentially threatening element. To perform connectivity analysis regarding an action, an intelligent convergence security framework and road map is suggested. A suggested convergence security framework was constructed to be independent of an automatic framework, such as the conventional single solution for the priority defense system of APT of the latest attack type, which makes continuous reputational attacks to achieve its goals. This study suggested the next generation convergence security framework to have preemptive responses, possibly against an APT attack, consisting of the following five hierarchical layers: domain security, domain connection, action visibility, action control, and convergence correspondence. In the domain, the connection layer suggests a security instruction and direction in the domains of administrative, physical and technical security. The domain security layer has consistency of status information among the security domain. A visibility layer of an intelligent attack action consists of data gathering, comparison and decision cycle. The action control layer is a layer that controls the visibility action. Finally, the convergence corresponding layer suggests a corresponding system of before and after an APT attack. The administrative security domain had a security design based on organization, rule, process, and paper information. The physical security domain is designed to separate into a control layer and facility according to the threats of the control impossible and control possible. Each domain action executes visible and control steps, and is designed to have flexibility regarding security environmental changes. In this study, the framework to address an APT attack and load map will be used as an infrastructure corresponding to the next generation security.

• 정보보호학회논문지
• /
• 제8권1호
• /
• pp.23-37
• /
• 1998

This paper considers the design and management of security MIB for EDI system. EDI system has to establish various securety wervices and mechanisms to protect against security threats. Hence, the EDIsystem requires appropriate security management to monitor and control the security obhects for its security services and mechanisms. In this paper, I identify security objects for management of secueity services defined in the EDIsystem, and propose the design of a security MIB and describe the use of SNMPnetwork management protocol in its management.

• 융합보안논문지
• /
• 제1권1호
• /
• pp.1-7
• /
• 2001

본 논문에서는 접근제어 요구 사항의 복잡한 문제를 해결하기 위한 직무기반 접근제어 모델을 설계하였다. 본 논문에서 설계한 접근제어 모델은 직무기반 접근제어를 이용하여 권한을 효과적으로 통제하고, 신분 및 규칙기반 접근제어를 이용하여 정보의 비밀성, 무결성 및 가용성의 보장과 불법적인 유통을 방지할 수 있다. 설계된 접근제어 모델은 직무, 보안등급, 무결성 등급 및 소유권 등의 다단계 보안 정책을 기반으로 하여 자원에 대한 불법적인 접근을 방어 할 수 있다.