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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2018/043497
Kind Code:
Provided is a one-time mutual authentication system in which, when normal authentication fails, re-authentication is performed, and if the re-authentication is successful, a seed for the next normal authentication is set. When normal authentication fails, a client-side device generates, on the basis of a re-authentication seed, a re-authentication client-side one-time authenticator XC1(m-1) and next authentication client-side seeds for normal authentication and re-authentication, and transmits the same to a server device. If the server device successfully authenticates the re-authentication client-side one-time authenticator, the server device generates a re-authentication server-side one-time authenticator XS1(m-1) and next authentication server-side seeds for normal authentication and re-authentication, and transmits the same to the client-side device. If authentication of the re-authentication server-side one-time authenticator is successful in the client-side device, the status of the next normal authentication seed and the next re-authentication seed in both the client-side device and the server device are changed to an already-set status.

OKAWA Katsuyoshi (4-52-18-306, Kamiasao Asao-ku, Kawasaki-sh, Kanagawa 21, 〒2150021, JP)
Application Number:
Publication Date:
March 08, 2018
Filing Date:
August 29, 2017
Export Citation:
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FOM RESEARCH & INSTITUTE LLC. (#19-102 Sanrafureyurigaoka, 5 Yurigaoka 2-chome, Asao-ku, Kawasaki-sh, Kanagawa 11, 〒2150011, JP)
International Classes:
H04L9/32; G06F21/44
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (Sapia Tower, 1-7-12 Marunouchi, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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