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1. (WO2018220727) SERVICE PROVISION SYSTEM, SERVICE PROVISION METHOD, AND PROGRAM

Pub. No.:    WO/2018/220727    International Application No.:    PCT/JP2017/020159
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Wed May 31 01:59:59 CEST 2017
IPC: H04L 9/32
H04L 9/08
Applicants: HISHINUMA Noboru
菱沼 昇
Inventors: HISHINUMA Noboru
菱沼 昇
Title: SERVICE PROVISION SYSTEM, SERVICE PROVISION METHOD, AND PROGRAM
Abstract:
A service provision system provided with: a communication unit (110) for receiving a first partial key that is a portion of an authentication key from a terminal; and an information storage unit (190) for storing a second partial key of the authentication key, with the first partial key removed, and a hash value calculated on the basis of the authentication key. A service provision device (100) is provided with: a hash value authentication unit for authenticating the terminal on the basis of the stored hash value and the hash value calculated on the basis of the received first partial key, and the stored second partial key; and a provision unit (180) for providing services to the terminal when the hash value authentication unit has successfully authenticated the terminal.