The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 05, 2023
Filed:
May. 21, 2018
Nti, Inc., Yokkaichi, JP;
Takatoshi Nakamura, Tokyo, JP;
NTI, INC., Mie, JP;
Abstract
A technique for preventing a man in the middle attack is proposed. A security gate system includes an admission card and a security gate apparatus. The admission card has condition data that is data for specifying a condition to be satisfied when or before or after encrypted authentication data are transferred from the admission card to the security gate apparatus. When a user attempts to enter a building, authentication data including condition data are generated in the admission card(S), and encrypted into encrypted authentication data (S). The encrypted authentication data are transmitted from the admission card to the security gate apparatus (S, S), and decrypted to be returned to the authentication data (S). The security gate apparatus performs authentication determination which is a determination as to whether a condition specified by the condition data included in the authentication data is satisfied (S), and opens a gate plate when a determination result is positive (S).