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:
Jul. 14, 2015
Filed:
Apr. 06, 2011
Nicolas Anquet, Grenoble, FR;
Hervé Sibert, Le Mans, FR;
Nicolas Anquet, Grenoble, FR;
Hervé Sibert, Le Mans, FR;
ST-ERICSSON SA, Plan-les-Ouates, CH;
Abstract
A method of protecting digital data stored in a storage medium. The method comprises providing a first and a second addressable storage region in the storage medium, and selector means for selectively indicating one of the first and the second addressable storage regions as active; storing the digital data in the first addressable storage region of the storage medium, wherein the digital data stored in the first addressable storage region is stored encrypted with a first encryption key; and causing the selector means to indicate the first addressable storage region as being active; and, responsive to a trigger event, copying the digital data from the first to the second addressable storage region, wherein the digital data stored in the second addressable storage region is stored encrypted with a second encryption key; and causing the selector means to indicate the second addressable storage region as being active.