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1. (WO2018052090) TRANSMISSION AND RECEPTION SYSTEM, TRANSMISSION DEVICE, RECEPTION DEVICE, METHOD, AND COMPUTER PROGRAM

Pub. No.:    WO/2018/052090    International Application No.:    PCT/JP2017/033305
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Fri Sep 15 01:59:59 CEST 2017
IPC: H04L 9/32
G09C 1/00
Applicants: NTI, INC.
株式会社エヌティーアイ
Inventors: NAKAMURA, Takatoshi
中村 貴利
Title: TRANSMISSION AND RECEPTION SYSTEM, TRANSMISSION DEVICE, RECEPTION DEVICE, METHOD, AND COMPUTER PROGRAM
Abstract:
Provided is an authentication technology which is far safer than common technologies employing one-time passwords. A client and a server both have a functionality for generating the same solution under the same conditions. The client creates a first 20-character mixed alphanumeric solution (S1002), generates a partial solution in which part of the solution has been extracted in accordance with certain rules (S1003), and transmits the partial solution to the server together with identifying information, i.e. a user ID (S1004). The server receives said solution and information (S2001), generates a solution (S2002), and generates a partial solution (S2003). If the partial solution generated by the server matches the partial solution received from the client, the client is authenticated as being legitimate.