Method for distributing customized data for mobile telephone network

Abstract

The invention concerns a method for distributing customized data in the form of text messages to users of a mobile telephone network (4). Said method uses multicast (Cell Broadcast) functions specific to said networks, but enables customization of effectively available information for the terminal user, and control by the service operator of access to said information, in particular for marketing and billing to the final user. To achieve this, the method uses encryption of the broadcast information (1), and its decryption on the mobile telephone (5), with a software which thereby manages access to the information (1). The encryption keys are stored by the operator, either in the mobile telephone (5), or in the SIM card, and in all cases, outside the reach of the user.

Dependencies are inferred from the claim text.