Mannesmann Aktiengesellschaft

Vodafone Holding Gmbh

Atx Europe Gmbh

Maik Schmidt

Stefan Vieweg

Matthias Jungemann

R&uuml;diger Barth

Reinhard Thomann

Michael Thoenissen

Hans G&uuml;nter Schneider

A simple, efficient and reliable introduction of a service key into a terminal is made possible by a method for introducing a service key into a terminal where the terminal can use the service key to decrypt service data transmitted in encrypted form from a central control station via a public communication channel. The terminal stores a decoding key which is produced from an initialization value by a terminal programming device using an algorithm. The central control station uses an algorithm corresponding to the algorithm and initialization value in the terminal programming device in order to produce a coding key matching the decoding key. The service key stored in the central control station is coded using the coding key and is transmitted to the terminal where it is decoded using the stored decoding key.

Method and device for introducing a service key into a terminal

Simple and multipurpose traffic information is made possible by a method for selecting traffic information which is to be sent to a mobile wireless terminal from a traffic information center and which pertains to a geographic area of a road traffic network selected on the mobile wireless terminal side and/or selected based on the position of the mobile wireless terminal. On the basis of selection information representing the selection of a geographic area, map information pertaining to the selected area is selected in the traffic information center from a digital map of a traffic network, which digital map is available in the traffic information center. On the basis of the selection information, traffic status information pertaining to the geographic area of the road traffic network and representing the traffic status on road sections of the road traffic network are selected from the traffic status information available in the traffic information center. Graphic traffic information based on the selected map information and on the selected traffic status information is transmitted by mobile radio to the mobile wireless terminal for joint graphic display.

Location-related WAP traffic jam map by associating map excerpts in a traffic information center

A secure and efficient key management system for utilizing a service key for retrieving service data transmitted to a terminal from a service center via a communication channel. A service key is inserted into a terminal and is used to enable the decryption of the received encrypted service data from the service center. The service center requests and obtains a coding key from a trust center when the service center receives a service key transmission request from the from the terminal. The service key transmission request includes a terminal identity number. The service center forwards the request to the trust center which returns the coding key associated with a decoding key corresponding to the specific terminal. The service center encrypts the service key with the coding key and transmits the service key to the terminal. The service key is decrypted in the terminal using the decoding key input to the terminal by the terminal manufacturer. Once the service key has been decrypted, the service data can correspondingly be decrypted to use by the terminal user.

Method for inserting a service key in a terminal and devices for implementing said method

Growing community of inventors

Meerbusch, Germany

Maik Schmidt