Nokia Solutions and Networks Oy

Seimens Aktiengesellschaft

Siemens Aktiengesellschaft

Robert Seidl

Gerhard Kuhn

Norbert Goetze

Gabor Marton

Uwe Föll

Markus Bauer-Hermann

Erwin Postmann

Joerg Abendroth

Christoph Pollak

Gerald Meyer

A protocol for issuing and controlling digital certificates is described in which an identity management system is used to identify a user requesting a digital certificate and is also used to issue the digital certificate itself. Accordingly, an IDM-based PKI system is provided.

Certificate authority

An arrangement for authenticating a user at a service provider is described. The arrangement makes use of the fact that a user of a mobile communication device can be readily and securely identified by a telecommunications provider and re-uses that authentication to identify the same user when accessing the service provider from a different client. The client instructs the mobile communication device to contact an identity provider at the telecommunications provider and shared secrets are exchanged between the identity provider, mobile communication device and client to confirm that the same user is at the client and the mobile communication device.

Authentication to an identity provider

A method of providing data in response to a search request comprises the steps of a social networking website receiving the search request to provide a pseudonym associated with the real name; the social networking website determining that the search request is for a pseudonym which, within its database, is not associated with the real name; the social networking website referring the search request to a identity management server which contains an association between the pseudonym and the real name; the identity management server determining the pseudonym which is associated with the real name; and the identity management server providing an information item which is related to the pseudonym.

System for protecting personal data

A serving call session control function unit (S-CSCF) is provided within an IMS-based service communication system in order to register a user of a mobile communication terminal for communication service in a mobile communication system. The IMS-based service communication system has several call session control function units and at least one interrogation call session control function unit (I-CSCF). The mobile communication system is equipped with at least one policy decision point unit (PDP). To select a suitable S-CSCF unit, user information is first determined using a user context server unit that is assigned to the policy decision point unit and network information is determined using a network context server unit. The user information and network information are interlinked in the policy decision point unit (PDP) and user-specific and/or network-specific selection criteria are derived from said information and are taken into consideration to select a suitable S-CSCF unit.

Method for selecting an S-CSCF unit within an IMS-based service communication system

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Königsdorf, Germany

Robert Seidl