• Title/Summary/Keyword: Network Device

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A Study on Efficient Routing and Authentication Scheme in Ad-Hoc Environment (Ad-Hoc환경에서 효율적인 라우팅 및 인증 기술에 관한 연구)

  • Kang, Seo-Il;Lee, Im-Yeong
    • Journal of Korea Multimedia Society
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    • v.11 no.8
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    • pp.1121-1128
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    • 2008
  • Ad-Hoc network is consisted with the device of wireless communication. Therefore, the organization of network is dynamic and the changing communication channel is essential. According this, the study of secure routing route and certification technique has to be needed. In we research, we suggest not only the secure routing scheme in Ad-Hoc circumstance but also the method that user can be serviced the type of network which is connected Ad-Hoc network and wireless lam. In case of the routing form of Ad-Hoc Network, although in preexist study, when the device of organization withdraws, routing is needed, in we research, we suggest the detour route that is used hop frequency. We can offer the service of ubiquitous that the certification of secure user and the creation of routing route in Ad-Hoc network.

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Research on the Issuing and Management Model of Certificates based on Clustering Using Threshold Cryptography in Mobile Ad Hoc Networking (이동 Ad Hoc 네트워킹에서 Threshold Cryptography를 적용한 클러스터 기반의 인증서 생성 및 관리 모델연구)

  • Park, Bae-Hyo;Lee, Jae-Il;Hahn, Gene-Beck;Nyang, Dae-Hun
    • Journal of Information Technology Services
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    • v.3 no.2
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    • pp.119-127
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    • 2004
  • A mobile ad hoc network(MANET) is a network where a set of mobile devices communicate among themselves using wireless transmission without the support of a fixed network infrastructure. The use of wireless links makes MANET susceptible to attack. Eavesdroppers can access secret information, violating network confidentiality, and compromised nodes can launch attack from within a network. Therefore, the security for MANET depends on using the cryptographic key, which can make the network reliable. In addition, because MANET has a lot of mobile devices, the authentication scheme utilizing only the symmetric key cryptography can not support a wide range of device authentication. Thereby, PKI based device authentication technique in the Ad Hoc network is essential and the paper will utilize the concept of PKI. Especially, this paper is focused on the key management technique of PKI technologies that can offer the advantage of the key distribution, authentication, and non-reputation, and the issuing and managing technique of certificates based on clustering using Threshold Cryptography for secure communication in MANET.

N-Screen Service for ASMD support (N-Sceen Serivce의 ASMD를 지원 방안 연구)

  • Yun, Sang-Jun;Kim, Kee-Cheon
    • Proceedings of the Korea Information Processing Society Conference
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    • 2012.04a
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    • pp.615-617
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    • 2012
  • N-Screen Service는 하나의 Content를 다양한 Device에서 사용가능하게 해주는 Service를 의미한다. 현재 N-Screen Service는 Content Service 형태로 봤을 때 OSMU(One Source Multi Use) Service를 제공한다. ASMU(Adaptive Source Multi Device) N-Screen Service의 조건으로 Device에 최적화된 Content를 제공하여야 한다. 이를 위해서는 Device에 최적화된 Content의 변환 및 Metadata의 이동이 자유로워야 한다. 본 논문에서는 ASMD를 지원하는 N-Screen Model을 제안한다. 특히 Home Network와 Cloud 사이의 Devicerks Content Metadata 이동과 Content 변환에 대한 방법을 제시하고자 한다.

CoAP-based Time Synchronization Algorithm in Sensor Network (센서 네트워크에서의 CoAP 기반 시각 동기화 기법)

  • Kim, Nac-Woo;Son, Seung-Chul;Park, Il-Kyun;Yu, Hong-Yeon;Lee, Byung-Tak
    • Journal of the Institute of Electronics and Information Engineers
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    • v.52 no.3
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    • pp.39-47
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    • 2015
  • In this paper, we propose a new time synchronization algorithm using CoAP(constrained-application protocol) in sensor network environment, which handles a technique that synchronizes an explicit timestamp between sensor nodes not including an additional module for time-setting and sensor node gateway linked to internet time server. CoAP is a standard protocol for sensor data communication among sensor nodes and sensor node gateway to be built much less memory and power supply in constrained network surroundings including serious network jitter, packet losses, etc. We have supplied an exact time synchronization implementation among small and cheap IP-based sensor nodes or non-IP based sensor nodes and sensor node gateway in sensor network using CoAP message header's option extension. On behalf of conventional network time synchronization method, as our approach uses an exclusive protocol 'CoAP' in sensor network, it is not to become an additional burden for synchronization service to sensor nodes or sensor node gateway. This method has an average error about 2ms comparing to NTP service and offers a low-cost and robust network time synchronization algorithm.

A Design of Device Identification and Communication Method for Secure Device Monitoring based Smart Phone (스마트폰 기반에서 안전한 디바이스 모니터링을 위한 디바이스 식별 및 통신 기법 설계)

  • Jin, Byungwook;Ahn, Heuihak;Jun, Moonseog
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.13 no.1
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    • pp.69-78
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    • 2017
  • As the smartphone-based devices are diffused and developed rapidly, they provide the convenience to the users. The abovementioned sentence technologies are being used not only in the existing sensor and wireless network technology but also in the application services of the diverse fields application services such as smart appliance, smart car, smart health care, etc. and the new fusion paradigm from the industry is presented by undertaking the researches in diverse area by the enterprises and research institutions. However, the smart environment exposes its weaknesses in the mobile terminal area, existing wireless network and IT security area. In addition, due to new and variant ways of attack, not only the critical information are disclosed However also the financial damages occur. This paper proposed the protocol to perform the smartphone-based safe device monitoring and safe communication. The proposed protocol designed the management procedure of registration, identification, communication protocol and device update management protocol and the safety against the attack techniques such as the an-in-the-middle-attack, impersonation attack, credential threat, information leaks and privacy invasion was analyzed. It was observed that the proposed protocol showed the performance improved by approximately 52% in the communication process than the existing system.

A Study on NMEA 2000 based two-dimensional Ultrasonic Anemometer (NMEA 2000 기반 2차원 초음파 풍향 풍속계에 관한 연구)

  • Kim, Jong-Hyun;Park, Dong-Hyun;Kim, Kyung-Yup;Yu, Yung-Ho
    • Journal of Advanced Navigation Technology
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    • v.15 no.1
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    • pp.25-31
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    • 2011
  • Recently NMEA 2000 protocol is familiarized as a standard real time instrument network of SOLAS ship. This paper is studied to develop NMEA 2000 based two-dimensional ultrasonic anemometer which is core device for navigation as a sensor of wind speed and direction using ultrasonic including temperature and barometer. Developed system is connected to NMEA 2000 network which is composed of various kinds of merchandised NMEA 2000 device such as depth gauge, speed gauge, GPS device etc. to test connectivity with other NMEA 2000 device and functional test are carried out as weather station in comparison with other merchandised weather station which are developed advanced foreign company to ascertain usability as a weather station on board.

Design of Collective system of Automobile information in Korea (대한민국 표준 개인용 자동차 운행정보 수집 시스템 설계에 대한 연구)

  • Kim, Min-Young;Jang, Jong-Wook
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.9
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    • pp.1923-1930
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    • 2012
  • 'No-Automobile driving Day' is one of Special option of Automobile Insurance in Republic of Korea. It option is used a system for collect to automobile driving information. However, Its system gives discomfort to users of this system. A Discomfort of this system to users is the OBD device's(Personal Car Driving Check Device) installation. A frequent installation of this device provides this OBD device's breakage to the users of this system. In this paper, for a solve this problem, studied new system design to supplement the existing system using Smartphone and WPAN(Wireless Personal Area Network).

Effective Parent-Child Key Establishment Algorithm used ZigBee Sensor Network (ZigBee 센서네트워크에서 효율적인 Parent - Child 키 연결 알고리즘)

  • Seo, Dae-Youl;Kim, Jin-Chul;Kim, Kyoung-Mok;Oh, Young-Hwan
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.43 no.10 s.352
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    • pp.35-45
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    • 2006
  • Coordinator is defining so that function as most trust center that is point in security in ZigBee Alliance. Because must do height connection with coordinator in device signing to PAN newly, coordinator has shortcoming that subordinate is revealed to danger directly to Centered and cattish device. When do height connection some device, do not become problem, but if network is huge, coordinator's subordinate shall increase as traffic quantity which happen in coordinator increases. Also, in ZigBee security to link network kina of transmission and mutually certification in ZigBee Alliance standard include, but I do not provide method to deliver master key in each node safely. Because process that transmit master key passes through channel that do not secure, master key has shortcoming that is revealed directly. In this paper, I suggested Parent-Child key establishment algorithm to solve these problem. Proposed algorithm consists of two structures. Master key establishment algorithm and device that sign to PAN newly that can use one-way Hash chain and transmit master key safety are consisted of Parent-Child network key establishment algorithm that do child node and parent node key establishment as can do key establishment efficiently. Method that device proposes in case method that propose in case have master key establishment time was shown better performance $200{\sim}1300ms$ than existing method, and device does not have master key than existing method height connect time about $400{\sim}500ms$ better performance see.

Wireless DDoS Attack Detection and Prevention Mechanism using Packet Marking and Traffic Classification on Integrated Access Device (IAD 기반 패킷 마킹과 유무선 트래픽 분류를 통한 무선 DDoS 공격 탐지 및 차단 기법)

  • Jo, Je-Gyeong;Lee, Hyung-Woo;Park, Yeoung-Joon
    • The Journal of the Korea Contents Association
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    • v.8 no.6
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    • pp.54-65
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    • 2008
  • When DDoS attack is achieved, malicious host discovering is more difficult on wireless network than existing wired network environment. Specially, because wireless network is weak on wireless user authentication attack and packet spoofing attack, advanced technology should be studied in reply. Integrated Access Device (IAD) that support VoIP communication facility etc with wireless routing function recently is developed and is distributed widely. IAD is alternating facility that is offered in existent AP. Therefore, advanced traffic classification function and real time attack detection function should be offered in IAD on wireless network environment. System that is presented in this research collects client information of wireless network that connect to IAD using AirSensor. And proposed mechanism also offers function that collects the wireless client's attack packet to monitoring its legality. Also the proposed mechanism classifies and detect the attack packet with W-TMS system that was received to IAD. As a result, it was possible for us to use IAD on wireless network service stably.

Portable 4K UHD Broadcasting Device using 5G Mobile Network as a Transmission Channel (5G 이동통신망을 전송채널로 활용하는 휴대형 4K UHD 방송중계 장치)

  • Paik, Junghoon;Kim, Yongsuk
    • Journal of Broadcast Engineering
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    • v.25 no.5
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    • pp.789-797
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    • 2020
  • In this paper, we propose a protocol structure of a portable 4K Ultra High Definition (UHD) broadcast relay device that utilizes a 5G mobile communication network as a transport channel, and construct a prototype to conduct a broadcast relay performance test through a 5G mobile communication network. The test shows that the encoding time of the 4K UHD encoder is from a minimum of 86.28ms to a maximum of 88.41ms, the relay delay time in the 5G mobile communication network is 13.645ms on average, the delay variation is 17.49ms, and the glass-to-glass delay time is 289.90 on average, the delay variation is 27.63ms. Using the developed prototype, a relay test between Seoul and Anseong is conducted, and the possibility of 4K UHD broadcasting through a 5G mobile communication network is confirmed.