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:
Oct. 26, 2021
Filed:
Oct. 02, 2017
Orange, Issy-les-Moulineaux, FR;
ORANGE, Issy-les-Moulineaux, FR;
Abstract
A method for mutual authentication between user equipment and a communications network. The network includes a mobility management entity and a home subscriber server. The method, implemented by the user equipment, includes: receiving an authentication challenge having an token based on a first index and a first authentication message calculated by the home subscriber server and based on a first sequence number; checking that a condition of a set is true, the set including: the first sequence number is the same as a second sequence number stored in the user equipment, and the first sequence number is the same as a preceding value of the second sequence number and the first index is higher than a second index stored in the client equipment; and calculating and sending, when a condition is true, an authentication result and an authentication message, based on the preceding value of the second sequence number.