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:
Apr. 23, 2019
Filed:
Mar. 25, 2015
Oberthur Technologies, Colombes, FR;
Sebastien Nerot, Colombes, FR;
IDEMIA FRANCE, Colombes, FR;
Abstract
The securing of data loading originating from an external device into a code memory area defined by an initial program of the secure element and any modification of which is controlled solely by the latter. When the external device obtains data to be transmitted to the secure element, the latter simulates an image of the code memory area as it would be modified by the loading of these data. A signature is calculated on the basis of the simulated image, then dispatched to the secure element with the data. The initial program of the secure element compares a signature that it has calculated over the whole of the code memory area after the actual loading of the data, with the signature received from the external device. The identity between these signatures ensures that the code memory area conforms to the image simulated by the external device, and is unimpaired.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile