Robert Boschgmbh

Ipcom Gmbh & Cokg

Siemens Aktiengesellschaft

Wael Adi

Josef Laumen

Martin Hans

Frank Kowalewski

Mark Beckmann

Gunnar Schmidt

Siegfried Baer

A method for identification of a physical unit (M) storing a secret identity (SIMEI) and an open identity (IMEI) in memory in a 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 use 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 SIGt and the open identity (IMEI) to the testing device (P); and identifying the physical unit (M) by a comparison of the electronic signature (SIGt) sent and a corresponding electronic signature (SIGv) in the generated testing device (P).

Method for cryptographically verifiable identification of a physical unit in a public, wireless telecommunications network

A method for confirming identity of a physical unit (M) in an open, wireless telecommunications network, having the following steps: storing a secret identity (SIMEI) and an open identity (IMEI) in memory in the physical unit (M); receiving an identity request (IR) with a first parameter (CHv) from the testing device (P) at 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 a testing device (P); wherein the identity of the physical unit (M) is confirmed if the electronic signature (SIGt) matches a corresponding electronic signature (SIGv) generated by the testing device by application of a first cryptographic function to the secret identity (SIMEI).

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).

A method of encrypting data, a telecommunications terminal and an access authorization card are described, which permit utilization of services of one or more service providers independently of a network operator or manufacturer of the telecommunications terminal. Encrypted data is transmitted between a service provider and the telecommunications terminal over a telecommunications network. Data to be transmitted over the telecommunications network is encrypted as a function of the service provider selected.

Method for encrypting data and a telecommunications terminal and access authorization card

In a method and apparatus for encoding or decoding data, a fire code is used for this with a polynomial G(x)=P(x)(1+x), wherein the value for C can be variably selected, and in addition, the error correction and detection properties of the redundancy integrated into the decoding apparatus can be set independently of the encoding device, and these properties depend solely on the number of redundancy bits used.

Device and method for coding data with a fire code

A device and a method for the coding or decoding of data are provided, in which an outer block coding and an inner coding take place. For adjusting the data rate, the redundancy and therefore the block size of the block-coded data is set.

Growing community of inventors

Braunschweig, Germany

Wael Adi