• Title, Summary, Keyword: 무결성

Search Result 1,203, Processing Time 0.172 seconds

Availability Performance Analysis of Korean Wide Area Differential GNSS Test Bed (한국형 광역보정시스템 테스트베드 가용성 성능 분석)

  • Yun, Ho;Kee, Chang-Don;Kim, Do-Yoon
    • Journal of Advanced Navigation Technology
    • /
    • v.15 no.4
    • /
    • pp.510-516
    • /
    • 2011
  • For using Global Navigation Satellite System(GNSS) in the civil aviation, it should satisfies the Required Navigation Performances(RNPs) which are defined by International Civil Aviation Organization(ICAO). RNP defines the required accuracy, integrity, availability, continuity of each flight procedure. In order to guarantee user's integrity, user's protection level has to be overestimated. On the other hand, for improving user's availability, user's protection level has to be estimated tightly. Therefore protection level should be estimated as tight as possible while it assuring the user's integrity. This paper describes the current integrity function of Korean WAD GNSS test bed, and predicts the availability performance of Korean WAD GNSS by simulation.

Privacy-Preserving Self-Certified Public Auditing for Secure Cloud Storage (안전한 클라우드 스토리지를 위한 프라이버시 보장 자체 인증 공공 감사)

  • Baek, Mokryeon;Kim, Dongmin;Jeong, Ik Rae
    • Journal of KIISE
    • /
    • v.43 no.4
    • /
    • pp.497-508
    • /
    • 2016
  • With a cloud storage service, data owners can easily access their outsourced data in cloud storage on different devices and at different locations, and can share their data with others. However, as the users no longer physically have possession of their outsourced data and the cloud still facing the existence of internal/external threats, the task of checking the data integrity is formidable. Over recent years, numerous schemes have been proposed to ensure data integrity in an untrusted cloud. However, the existing public auditing schemes use a third-party auditor(TPA) to execute high computation to check data integrity and may still face many security threats. In this paper, we first demonstrate that the scheme proposed by Zhang et al. is not secure against our two threat models, and then we propose a self-certified public auditing scheme to eliminate the security threats and guarantee a constant communication cost. Moreover, we prove the securities of our public auditing scheme under three security models.

Real-Time File Integrity Checker for Intrusion Recovery and Response System (침입 복구 및 대응 시스템을 위한 실시간 파일 무결성 검사)

  • Jeun Sanghoon;Hur Jinyoung;Choi Jongsun;Choi Jaeyoung
    • Journal of KIISE:Computer Systems and Theory
    • /
    • v.32 no.6
    • /
    • pp.279-287
    • /
    • 2005
  • File integrity checking is the most reliable method to examine integrity and stability of system resources. It is required to examine the whole data whenever auditing system's integrity, and its process and result depends on administrator's experience and ability. Therefore the existing method is not appropriate to intrusion response and recovery systems, which require a fast response time. Moreover file integrity checking is able to collect information about the damaged resources, without information about the person who generated the action, which would be very useful for intrusion isolation. In this paper, we propose rtIntegrit, which combines system call auditing functions, it is called Syswatcher, with file integrity checking. The rtlntegrit can detect many activities on files or file system in real-time by combining with Syswatcher. The Syswatcher audit file I/O relative system call that is specified on configuration. And it can be easily cooperated with intrusion response and recovery systems since it generates assessment data in the standard IDMEF format.

Design and Implementation of a Spatial-Operation-Trigger for Supporting the Integrity of Meet-Spatial-Objects (상접한 공간 객체의 무결성 지원을 위한 공간 연산 트리거의 설계 및 구현)

  • Ahn, Jun-Soon;Cho, Sook-Kyoung;Chung, Bo-Hung;Lee, Jae-Dong;Bae, Hae-Young
    • Journal of KIISE:Computing Practices and Letters
    • /
    • v.8 no.2
    • /
    • pp.127-140
    • /
    • 2002
  • In a spatial database system, the semantic integrity should be supported for maintaining the data consistency. In the real world, spatial objects In boundary layer should always meet neighbor objects, and they cannot hold the same name. This characteristic is an implied concept in real world. So, when this characteristic is disobeyed due to the update operations of spatial objects, it is necessary to maintain the integrity of a layer. In this thesis, we propose a spatial-operation-trigger for supporting the integrity of spatial objects. The proposed method is defined a spatial-operation-trigger based on SQL-3 and executed when the constraint condition is violated. A spatial-operation-trigger have the strategy of execution. Firstly, for one layer, the spatial and aspatial data triggers are executed respectively. Secondly, the aspatial data trigger for the other layers is executed. Spatial-operation-trigger for one layer checks whether the executed operation updates only spatial data, aspatial data, or both of them, and determines the execution strategy of a spatial-operation-trigger. Finally, the aspatial data trigger for the other layers is executed. A spatial-operation-trigger is executed in three steps for the semantic integrity of the meet-property of spatial objects. And, it provides the semantic integrity of spatial objects and the convenience for users using automatic correcting operation.

e네비게이션을 위한 전파항법 발전방향

  • Chae, Jong-Guk;Jeong, Gyeong-Gyu
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • /
    • pp.304-306
    • /
    • 2011
  • IMO, IALA는 e네비게이션 구현을 위한 미래 GNSS 시스템 요구조건으로서 보다 높은 정확도와 무결성, 백업 항법 등을 요구하고 있으며, 해외 동향 및 기술검토를 통해 국내 해양 전파항법 발전 방향을 제시하고자 한다.

  • PDF

A Study on Performance Improvement and Development of Integrity Verification Software of TCP/IP output data of VCS Correlation Block (VCS 상관블록의 TCP/IP 출력데이터의 무결성 검사 소프트웨어의 개발과 성능개선에 관한 연구)

  • Yeom, Jae-Hwan;Roh, Duk-Gyoo;Oh, Chung-Sik;Jung, Jin-Seung;Chung, Dong-Kyu;Oh, Se-Jin
    • Journal of the Institute of Convergence Signal Processing
    • /
    • v.13 no.4
    • /
    • pp.211-219
    • /
    • 2012
  • In this paper, we described the software development for verifying the integrity of output data of TCP/IP for VLBI Correlation Subsystem (VCS) correlation block and proposed the performance improvement method in order to prevent the data loss of correlation output. The VCS correlation results are saved at the Data Archive system through TCP/IP packet transmission. In this paper, the integrity verification software is developed so as to confirm the integrity of correlation result saved at the data archive system using TCP/IP packet information of VCS. The 3-step integrity verification process is proposed by using the developed software, its effectiveness was confirmed in consequence of correlation experiments. In addition, TCP/IP packet transmission must be completed within minimum integration period. However, there is not only TCP/IP packet loss occurred but also the problem of correlation result integrity affected in account of a large quantity of packets and data during short integration time. In this paper, the reason of TCP/IP packet loss is analyzed and the modified methods for FPGA(Field Programmable Gate Array) of VCS are proposed, the integrity problem of correlation results will be solved.

A Study on the Chain of Custody for Securing the Faultlessness of Forensic Data (포렌식 자료의 무결성 확보를 위한 수사현장의 연계관리 방법 연구)

  • Lee, Gyu-An;Shin, Young-Tae;Park, Dea-Woo
    • KSCI Review
    • /
    • v.14 no.2
    • /
    • pp.225-234
    • /
    • 2006
  • Computer Forensics functions by defending the effects and extracting the evidence of the side effects for production at the court. Has the faultlessness of the digital evidence been compromised during the investigation, a critical evidence may be denied or not even be presented at the trial. The presented monograph will deliberate the faultlessness-establishing chain procedures in disk forensics. system forensics, network forensics, mobile forensics and database forensics. Once the faultlessness is established by the methods proposed, the products of investigation will be adopted as a leading evidence. Moreover, the issues and alternatives in the reality of digital investigation are presented along with the actual computer forensics cases, hopefully contributing to the advances in computer digital forensics and the field research of information security.

  • PDF

Configuration Management based Configuration File Version Integrity Auditing Framework (형상관리 기반 설정파일 버전 무결성 감사 프레임워크)

  • Kim, Seonjoo;Lee, Sukhoon;Baik, Doo-Kwon
    • Proceedings of the Korea Information Processing Society Conference
    • /
    • /
    • pp.1511-1514
    • /
    • 2012
  • 최근 기업에서 구축하는 IT 아키텍쳐가 점점 복잡해져 가는 환경변화에 따라 각 시스템 구성요소의 조건이나 특성을 저장하는 설정파일(Configuration file)의 중요성이 강조되고 있지만, 대부분의 형상관리시스템이 응응 소프트웨어를 중심으로 구성되어 설정파일의 특징을 반영한 활동에 한계를 갖고 있다. 또한 품질보증 목적으로 수행하는 형상감사 활동도 응용 소프트웨어를 대상으로 품질중심 감사 활동이 이루어지면서, 등록된 개별 소프트웨어 별로 변경통제와 버전관리가 이루어져 설정 파일이 포함되는 경우 버전 무결성 차원의 문제를 적발하지 못하는 문제가 있다. 이 논문에서는 추가적으로 필요한 감사활동 요구기능을 정의하고, 동일한 원본에서 배포된 설정파일들이 서로 버전이 다르게 관리 될 수 있는 문제를 감사(Audit)를 통해 탐지할 수 있는 버전 무결성 감사 프레임워크를 제시한다. 제안하는 프레임워크는 기존 형상관리 개념과 액티비티, 프로세스를 기반으로 감사기능을 보완한다. 이를 통해 기존 감사활동에 버전 무결성 검증을 수행하는 형상감사 기능이 포함되며, 이는 설정파일의 버전 차이에 의해 사전/사후 발생될 장애, 오동작 등의 문제 해결에 활용된다. 이 논문에서 제안 프레임워크의 검증을 위하여 웹 시스템 기반 자바환경으로 구현하였고, 현장 적용한 부분을 평가 함으로써 검증하였다.

  • PDF

System design for vehicle black box data integrity provision of cloud computing base (데이터 무결성 제공을 위한 클라우드 기반의 차량용 블랙박스 시스템 설계)

  • Kim, Bo-Kyung;Baek, Hye-Ran;Jo, Su-Bin;Jung, Sun-Jae;Choi, Young-jun;OH, Seok-Youn;Rhee, Kyung-Hyune
    • Proceedings of the Korea Information Processing Society Conference
    • /
    • /
    • pp.640-643
    • /
    • 2013
  • 차량용 블랙박스는 영상, 음성 및 자동차의 주행정보를 저장하는 매체로서 저장되는 데이터를 통해 차량 접촉사고 시 운전자의 과실여부를 판단할 수 있는 중요한 장치로 최근 자동차 시장에서 많은 주목을 받고 있다. 그러나 현재 차량용 블랙박스는 단순히 주행 데이터를 저장만 하고 있어 법적인 근거 자료로 활용되기 위해서는 데이터에 대한 무결성 보장을 제공하는 기능이 없는 상황이다. 블랙박스에 저장된 데이터는 공격자에 의해 위, 변조될 위험이 존재함으로 본 논문에서는 보다 안전한 환경에서의 무결성 보장을 위해 클라우드 컴퓨팅 환경에서의 무결성을 제공하는 시스템을 설계 한다.

  • PDF