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:
Mar. 01, 2016
Filed:
Dec. 21, 2011
Gisela Meister, Munich, DE;
Gisela Meister, Munich, DE;
GIESECKE & DEVRIENT GMBH, Munich, DE;
Abstract
In a cryptographic method between a portable data carrier and a terminal device there are employed a public data-carrier key and a secret data-carrier key of the data carrier as well as a public terminal key and a secret terminal key of the terminal device. The data carrier employs as a public data-carrier key a static public key. As a secret data-carrier key the data carrier employs a secret key that is derived from a secret basic key associated with the public data-carrier key. Within the framework of the method, the terminal device checks an authentication parameter associated with the data carrier and different from the data-carrier keys.