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:
Sep. 18, 2012
Filed:
Mar. 28, 2001
Wael Adi, Braunschweig, DE;
Wael Adi, Braunschweig, DE;
IPCOM GmbH & Co. KG, Pullach, DE;
Abstract
The invention creates a method for identification of a physical unit (M) in an open, wireless telecommunications network by means of a testing device (P), having the following steps: storing a secret identity (SIMEI) and an open identity (IMEI) in memory in the physical unit (M); generating a first parameter (CHv) in the testing device (P); sending an identity request (IR) with the first parameter (CHv) from the testing device (P) to the physical unit (M); generating an electronic signature (SIGt) by means of a first cryptographic function (F) from the secret identity (SIMEI) and at least the first parameter (CHv) in the physical unit (M), and sending the generated electronic signature (SIGt) and the open identity (IMEI) to the testing device (P); generating the secret identity (SIMEI) from an open key (EMIGK) and from the sent open identity (IMEI) in the testing device (P); generating a corresponding electronic signature (SIGv) by means of the first cryptographic function (F) from the generated first secret identity (SIMEI) in the testing device (P); and identifying the physical unit (M) by a comparison of the electronic signature (SIGt) sent and the corresponding electronic signature (SIGv) in the generated testing device (P).