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. 14, 2009
Filed:
Nov. 29, 2004
Patrick Lequere, Villebon Suryvette, FR;
Patrick LeQuere, Villebon Suryvette, FR;
Bull S.A., Les Clayes Sous Bois, FR;
Abstract
The present invention concerns a cryptographic system () with a modular architecture. Memory modules () make it possible to store information concerning authentication keys, data and commands, including a secure memory module (') for containing the keys with integrity checking and an emergency erase function. Various types of algorithm modules () perform cryptographic functions of the cryptographic system by executing the commands stored in at least one memory module (). External interface modules () are utilized that make it possible to produce the link between the cryptographic system () and external devices, through a standard or proprietary input/output bus. A control unit () is responsible for the supervision of the various algorithm modules and the management of the keys, and a central interconnect module () assures handling of secure exchanges between blocks.