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. 23, 2012
Filed:
Jun. 28, 2007
Giovanni Fontana, Naples, IT;
Saverio Donatiello, Meroogliano, IT;
Giovanni Fontana, Naples, IT;
Saverio Donatiello, Meroogliano, IT;
Incard S.A., Geneva, CH;
Abstract
A key session derivation is provided during a mutual authentication between a master IC card storing a master key, and a user IC card storing a key-seed. The master IC card and the user IC card are connected through a communication interface for a communication session. A first random number associated to the user IC card is generated. First and second sub keys are derived from the key-seed. First and second session sub keys are respectively derived through the first sub key in combination with the first random number, and through the second sub key in combination with the first random number. The first and second session sub keys are joined in at least a session key for the communication session.