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. 04, 2011
Filed:
Mar. 11, 2003
Patrice Beaudou, Montrouge, FR;
Christophe Dubois, Poissy, FR;
Patrice Beaudou, Montrouge, FR;
Christophe Dubois, Poissy, FR;
Gemalto SA, Meudon, FR;
Abstract
The invention relates to a method of updating an authentication algorithm in at least one data processing device (CARD, SERV) which can store a subscriber identity (IMSI) which is associated with an authentication algorithm (Algo) in a memory element of said device (CARD, SERV). The inventive method comprises the following steps, namely: a step whereby a second inactive (Algo) authentication algorithm is pre-stored in a memory element of the device and a step for switching from the first algorithm (Algo) to the second algorithm (Algo) which can inhibit the first algorithm (Algo) and activate the second (Algo).