Apparatus to secure operations in a mobile radio network

Abstract

Abstract For persons with operating authorisation in addition to the subscriber possessing an authorisation card, a smart card is provided as evidence of authorisation. On this card, the telephone number has a notional authentication centre as a home location, which is connected to all the EDP installations of the network operation. The EDP installations are thus made able, through comparison of a response code (SRES) which is produced when a booking order is despatched from the authentication centre to a local exchange by transmitting a random number as an inquiry word and subsequent calculation with a subscriber-specific code, and a further response code (SRES) which is produced upon the inquiry of the subscriber by a random number through the local exchange and calculation in the SIM (Subscriber Identity Module) of the subscriber, to check the identity of the authorised person and provide the code to be used to set up a connection.

Inventors

• 👤 Helmut Dipl.-Ing. Mahner

Bibliographic Details