Method for cryptographically verifiable identification of a physical unit in a public, wireless telecommunications network
US8271787B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 2001 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Jan 5, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/75
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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 (F3) 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 (F3) 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 sig…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.