Method of distributing keys to subscribers of communications networks
AssigneeT-Mobile Deutschland GmbH
InventorsPeter Brune, Andreas Sasse
Life of this patent
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Abstract
The invention relates to a method for distributing keys to subscribers in communications networks, in particular digital mobile radio networks. These keys are required, for example, for access to added value services. In this case, there is a problem in distributing the keys securely and, above all, in an uncomplicated manner, to the subscribers. According to the invention, this is achieved by the keys being generated, and possibly stored if required, in a security device provided at the mobile radio network end and, on request by a subscriber, by at least one key being requested from the security device, being allocated to the subscriber, and being transmitted via the mobile radio network to the subscriber's mobile station.
Claims13
A method for distributing keys to subscribers in digital mobile radio networks, comprising the steps of:
- generating the keys in a security device provided at the mobile radio network end;
- requesting at least one key from the security device;
- transmitting the at least one key via the mobile radio network to a mobile station or a terminal of a subscriber based on the request;
- and
- setting up a SIM application toolkit (SAT) application in the SIM in the mobile station, wherein the SAT application carries out additional end-to-end encryption of the key transmitted between the mobile station and the security device, wherein
- the generated keys are stored in the security device prior to transmission;
- the requesting step is performed by the subscriber;
- the transmitted key is allocated to the subscriber;
- and
- the transmitted key is stored in the terminal and/or in a subscriber identity module (SIM) in the mobile station.
A method for distributing keys to subscribers in digital mobile radio networks, comprising the steps of:
- generating the keys in a security device provided at the mobile radio network end;
- storing the generated keys in the security device prior to transmission
- requesting, by the subscriber, at least one key from the security device;
- and
- transmitting the at least one key via the mobile radio network to a mobile station or a terminal of a subscriber based on the request, wherein
- the transmitted key is allocated to the subscriber;
- the transmitted key is stored in the terminal and/or in a subscriber identity module (SIM) in the mobile station;
- and
- the security device sends the key which is transmitted to the subscriber to one or more added value service nodes.
Dependencies are inferred from the claim text.