NETWORK SYSTEM AND MESSAGE SECURITY METHOD THEREOF

A network system according to an embodiment of the present invention comprises: a producer terminal for generating a topic; a subscriber terminal for subscribing to the topic; and a broker terminal which communicates with the subscriber terminal and the producer terminal, decrypts an encrypted topic...

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Bibliographic Details
Main Authors SHIN, Yoojung, KWON, Taekyoung, KWAK, Myeongcheol, LEE, Hyunwoo, LIM, Junghwan, LEE, Hyeonmin
Format Patent
LanguageEnglish
French
Korean
Published 03.06.2021
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Summary:A network system according to an embodiment of the present invention comprises: a producer terminal for generating a topic; a subscriber terminal for subscribing to the topic; and a broker terminal which communicates with the subscriber terminal and the producer terminal, decrypts an encrypted topic by using a second topic encryption key shared with the producer terminal so as to identify a subscriber terminal which is subscribing to the decrypted topic when a message including the encrypted topic and an encrypted payload is received from the producer terminal, and encrypts the topic by using a first topic encryption key shared with the subscriber terminal so as to transmit the encrypted topic together with the encrypted payload to the subscriber terminal. Un mode de réalisation de la présente invention concerne un système de réseaux qui comprend : un terminal producteur destiné à générer un sujet ; un terminal abonné destiné à s'abonner au sujet ; et un terminal courtier qui communique avec le terminal abonné et le terminal producteur, qui déchiffre un sujet chiffré au moyen d'une deuxième clé de chiffrement de sujet partagée avec le terminal producteur afin d'identifier un terminal abonné qui s'abonne au sujet déchiffré lorsqu'un message incluant le sujet chiffré et une charge utile chiffrée est reçu du terminal producteur, et qui chiffre le sujet au moyen d'une première clé de chiffrement de sujet partagée avec le terminal abonné afin de transmettre le sujet chiffré en même temps que la charge utile chiffrée au terminal abonné. 본 발명의 실시예에 따른 네트워크 시스템은 토픽을 생성하는 생산자 단말, 상기 토픽을 구독하는 구독자 단말, 및 상기 구독자 단말 및 상기 생산자 단말과 통신하며, 상기 생산자 단말로부터 암호화된 토픽과 암호화된 페이로드가 포함된 메시지를 수신하면, 상기 암호화된 토픽을 상기 생산자 단말과 공유하는 제 2 토픽 암호키를 이용하여 복호화하여 복호화된 토픽을 구독 중인 구독자 단말을 확인하고, 상기 구독자 단말과 공유하는 제 1 토픽 암호키를 이용하여 상기 토픽을 암호화하여 상기 암호화된 페이로드와 함께 상기 구독자 단말로 전송하는 브로커 단말을 포함한다.
Bibliography:Application Number: WO2020KR13707