Comvenient Gmbh & Co. Kg

Hubert E Kukla

Ingo Barth

The invention relates to a method for decrypting encrypted broadband data by one or more authorized users comprising the following steps: provision of the encrypted broadband data () for a plurality of users; provision of encrypted or non-encrypted key data (), which is of a comparatively narrower band than the broadband data () and which is personalized for one or more authorized users, exclusively in a decryption unit (), said narrow-band key data () being held in the decryption unit () in a form that is not accessible to the authorized user; at least partial decryption of the encrypted broadband data () in the decryption unit () in order to output a broadband data stream () that is at least partially decrypted; or generation of broadband key information () from the narrow-band key information () in the decryption unit () for the subsequent decryption of the encrypted broadband data ().

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Oberding, Germany

Hubert E Kukla