• Title/Summary/Keyword: FTP (File Transport Protocol)

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Design and implementation of a secured FTP server/client (보안 기능이 내재된 FTP 서버-클라이언트 설계 및 구현)

  • Ahn, Jae-Won;Choi, Bum-Jin;Ok, Sung-Jin;Kang, Jung-Ha;Kim, Eun-Gi
    • Proceedings of the Korea Information Processing Society Conference
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    • 2013.11a
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    • pp.672-675
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    • 2013
  • FTP(File Transfer Protocol)는 호스트에서 다른 호스트로 파일을 전송하기 위한 프로토콜로써, 데이터를 평문으로 전송하기 때문에 기밀성이 보장되지 않는다. 현재 보안 기능이 제공되는 FTP로 FTPS(FTP over SSL)가 있다. FTPS는 TLS(Transport Layer Security)와 SSL(Secure Socket Layer) 암호화 프로토콜 기반에서 동작하는 FTP 이다. 따라서 FTPS는 TLS와 SSL과 같은 추가적인 시스템이 반드시 필요한 단점이 있다. 본 논문에서는 추가적인 암호화 프로토콜 없이 FTP 내에서 보안 기능을 제공하는 Secured FTP를 제안하였다. 본 논문에서 제안한 Secured FTP 는 FTP 내에서 Diffie-Hellman 알고리즘을 이용하여 비밀 키를 교환하고 AES(Advanced Encryption Standard)-Counter 알고리즘을 이용하여 FTP 데이터를 암호화 및 복호화하도록 설계하였다. 본 논문에서 제안한 Secured FTP를 Linux 운영체제에서 구현하였고 시험을 통하여 비밀 키가 정상적으로 교환되고, FTP 데이터가 암호화되어 전송되는 것을 확인하였다.

A Study on Development of a Design System of Suction Muffler for Compressor (압축기용 흡입머플러의 설계시스템 개발에 관한 연구)

  • 양성대;정경훈;이은영;김우영;이유엽;황원걸;김병현
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2001.04a
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    • pp.279-283
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    • 2001
  • We described an integrated management system, which is a design system of suction muffler(SMDS). SMDS constructs a virtual design system and possesses a Mutual Interfacing Module function using a Remote Analysis function and a GUI(Graphic User Interface). This system consists of a sever and clients. Client performs modeling and preprocessing, and server analyzes the results. The system uses Telnet and FTP based on TCP/IP protocol for connecting a client with a server.. It uses a PC at each work place as a basic platform for design and analysis of goods, and si able to manage a project as a unit. It is shown through an exsample that it is useful as a design tool in the fields.

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Data Load Process of large-sized media for avionics using FTP and JSON (FTP와 JSON을 활용한 대용량 미디어의 항공장비용 데이터 로드 프로세스)

  • Ji-Hwan Choi;Nak-Min Choi;Jae-Kwon Shin
    • Journal of Advanced Navigation Technology
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    • v.27 no.5
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    • pp.610-620
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    • 2023
  • The interest in the aircraft interior market is gradually growing due to technological development based on the 4th industrial revolution and competition for airlines to attract customers, and as part of that, Cabin Display System (CDS) for FAA Part.25 civil aircraft is being developed in Korea. The CDS is a system that provides various multimedia services to passengers by utilizing Flexible and Transparent Organic Light Emitting Diodes (OLED) with Integrated Display Processing Module (IDPM). This paper presents a new method for efficient Data Load Process of large-sized files and deals with their implementation and performance. The results of this study are expected to be applied to Data Load Process development of avionics that require reliable large-capacity file transmission along with reducing the costs of development compared to existing ARINC-615A.

IP Studio Infrastructure intended for Modern Production and TV broadcasting Facilities

  • Mfitumukiza, Joseph;Mariappan, Vinayagam;Lee, Minwoo;Lee, Seungyoun;Lee, Junghoon;Lee, Juyoung;Lim, Yunsik;Cha, Jaesang
    • International journal of advanced smart convergence
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    • v.5 no.3
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    • pp.61-65
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    • 2016
  • In the TV broadcasting, movie production and business the transportation of video between creators (programmers, studios) and distributors (broadcast and cable networks, cable and satellites companies) is still a mix of File Transfer Protocol (FTP), physical delivery, and expensive multicast satellite. Cloud-based file sync-and-share providers like Dropbox and box are playing an increasing role, but the industry's unique demands for speed and multicasting have fueled the growth of IP Video transport. This paper gives a solid grasp of the major elements of IP video technology, including content preparation, system architecture alternatives and network performance management.