Computer device for use as system-on-chip-component in mobile radio-communication device, has secret key attached to hardware-crypto-machine, and connector for connecting key with user-sub-system identificator of user- sub-system

摘要

The device (102) has a processing system with a several of user-sub-systems. Each of user-sub system identificators identifies one user-sub-system of several of user-sub-systems. A processor executes the processing system, and a cryptography-unit (104) i.e. hardware-crypto-machine, provided with a cryptographic mechanism. A secret cryptography-unit-key (106) is attached to the hardware-crypto-machine. A connector is provided for connecting the secret cryptography-unit-key with the user-sub-system identificator of the actual executed user- sub-system. An independent claim is also included for a method for operating the computer device.