Jörg Dr.rer.nat. Schwenk

Method to install software in hardware

Method of establishing a common key for authorised users by means of a threshold scheme

Methods and arrangements for preventing unauthorised use of distribution networks

Method for preparing a restricted access service e.g. for pay-TV via mobilephone terminal, involves decoding message for testing reception validity in terminal device

Digital rights management system, where license key transmitted to user personal computer and stored in random access memory before being used to decrypt separately transmitted content

Marking of digital sound or image sequences

Method for secure transfer of ip data via a radio medium

Method for generating an authentic electronic certificate

Method for generating an asymmetric cryptographic group-key pair

Data receiving method for access-restricted data, involving issuing a subscriber with authority to receive data in the form of a code for decoding data per session