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ENCRYPTION CONTROL SYSTEM, ENCRYPTION CONTROL METHOD AND ENCRYPTION CONTROL PROGRAM

外国特許コード F190009855
整理番号 (S2017-1099-N0)
掲載日 2019年7月26日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2018JP038954
国際公開番号 WO 2019078343
国際出願日 平成30年10月19日(2018.10.19)
国際公開日 平成31年4月25日(2019.4.25)
優先権データ
  • 特願2017-203513 (2017.10.20) JP
発明の名称 (英語) ENCRYPTION CONTROL SYSTEM, ENCRYPTION CONTROL METHOD AND ENCRYPTION CONTROL PROGRAM
発明の概要(英語) The present invention provides an encryption control system, an encryption control method and an encryption control program which make it possible to further reduce the risk of a cipher key leaking. An input device, a plant-side control device, and a controller are respectively equipped with pseudorandom number calculation units having a common function, and are time synchronized, and start a synchronized operation at the same time. By thus configuring the encryption control system, it becomes possible to switch a pair of a public key and a private key in synchronization with the control cycle of the entire control system. Consequently, it becomes possible to instantaneously and definitely detect intervention in the control system by a malicious third party.
従来技術、競合技術の概要(英語) BACKGROUND ART
In recent years, with the development of information technology such as the Internet, electrical, gas, water or the like, a citizen life support infrastructure (Infrastructure: social infrastructure), or in a factory or industrial facility such as a power plant in a control system, information technology and the network is progressing. Such a control system and by the evolution of networked ICT(Information and Communication Technology), the control system includes a processing speed is increased, the sophistication of the processing content is a significant benefit from the like. On the other hand, a networked control system is a new threat is a cyber attack which attract a concern. In fact, a plant or a factory or power plant operation control system to monitor or control the appearance and to cyber attack, social attention as an important issue.
Against this backdrop, critical infrastructure to support control system for protected from cyber attack has been an urgent need for development of technology, the technology information to the control system other security system, such as detection of a cyber attack study is underway.
Patent Document 1 is, in part to the user of the present invention, encryption control system of the disclosed technology.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • THE UNIVERSITY OF ELECTRO-COMMUNICATIONS
  • 発明者(英語)
  • KOGISO Kiminao
  • SUZUKI Takashi
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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