Methods, systems, and techniques for configuring mobile media devices to communicate with different networks are provided. Example embodiments provide a technique for receiving, for example, over-the-air, electronic-based SIM access information, and then reconfiguring a mobile media device for wireless communications based on the received electronic-based SIM access information.

Apparatus, systems and methods for programmable sim card using over the air communicated information

In a telecommunications system including a plurality of different networks, terminals and smart cards, each terminal is usable in a particular network in association with one of the smart cards when that smart card is registered with that network. Each smart card carries secret information specific to its registered home network and with which the network can authenticate the smart card and allow use of the terminal with which that smart card is associated. Each smart card may be registered with one of the networks as its home network, selectively de-registered from its home network, and re-registered with a different one of the networks as its home network by obtaining data including an International Mobile Subscriber Identifier for use with that network. The Identifier is transmitted to the smart card, and the secret information relating to a particular network activated when registering or re-registering the smart card with that network.

Telecommunications systems and methods and smart cards for use therewith

A computer, such as a Windows-based PC 23 , has associated with it a Subscriber Identity Module (SIM) 15 , such as of the type used in a GSM or UMTS cellular or mobile telecommunications network. The SIM 15 can be authenticated with the network 3 in the same way as for authenticating SIMs of mobile telephone handsets used in the network, and can in this way authenticate the user of the PC 23 or the PC 23 itself. Such authentication can, for example, permit use of the PC 23 in relation to a particular application running on the PC 23 . Challenge and response messages are transmitted between the network 3 and the SIM 15 via an authenticator module 30 implemented on the PC 23 . These authentication messages have the predetermined format of an Over The Air (OTA) message, which is also used in GSM or UMTS telecommunications networks to transmit non-authentication messages—for example, SMS messages. The authentication data is encapsulated within OTA messages. The OTA messages are not necessarily transmitted wirelessly (that is, over the air). They may be transmitted via a fixed network; however, they have the predetermined format of OTA messages.

Facilitating and authenticating transactions

A constrained proxy key is used to secure communications between two devices via an intermediary device. A first proxy key is generated at a host device (key generator device) based on a shared secret key, one or more constraints on the first proxy key, and a key derivation function. At least the shared secret key and key derivation function are known to the host device and a client device (authentication device). The first proxy key is sent to a proxy device to use in authenticating communications with the client device. An authenticated message is generated by the proxy device using the first proxy key and sent to the client device. The client device locally generates a second proxy key using the key derivation function, one or more constraints, and the shared secrete key for authenticating the proxy device. The proxy device is authenticated if the client device successfully accesses the authenticated message from the proxy device using the second proxy key.

Constrained cryptographic keys

Methods and apparatus to secure communications in a mobile network are disclosed. An example method disclosed herein comprises randomizing a first set of bits associated with information to be communicated over a slow associated control channel by applying a scrambling factor to generate a set of scrambled bits equal in length to the first set of bits. Another example method disclosed herein comprises concatenating a set of error detection bits with a set of information bits associated with information to be transmitted over a slow associated control channel to generate a set of coded bits, and shuffling the set of coded bits to generate a set of shuffled bits.

Methods and apparatus to secure communications in a mobile network

System and method of anonymising data comprising the steps of reading parameters of an anonymisation procedure from a configurable anonymisation procedure resource Receiving data to be anonymised from a data source, wherein the data source is identified by one or more of the read parameters Applying one or more transformations to the received data according to the anonymisation procedure, wherein the one or more transformations include transforming at least an original portion of the received data into a transformed portion

Anonymisation and filtering data

A telecommunications system, such as a mobile telecommunications system, comprises a plurality of networks such as all owned or controlled in common. Smart cards are used for enabling terminals within the system to communicate. If the networks are GSM or UMTS networks, the smart cards can be SIM cards. A SIM card management centre (10) is provided which carries out the process normally carried out by a network operator for registering one of the SIM cards with its network (as its 'home' network), using information supplied by the SIM card supplier. In addition, however, the SIM card management centre (10) can re-register each smart card with a different one of the networks (as its new home network). This is particularly though not only useful where the terminals are telematics terminals incorporated in a product the final geographical destination of which may not be known at the time of manufacture or may change. Secret information relating to all the networks is pre-stored, in respective records, on each SIM card at the outset. The record specific to a particular one of the networks merely has to be activated when the SIM card is to be registered or re-registered with that network. The need for transmission of new secret information to the SIM card when re-registering it with a different one of the networks, which would potentially compromise security, is avoided.

System method and smart card for accessing a plurality of networks

Provisioning a subscriber in a network is provided by: receiving an initialisation request for access to a network on behalf of a subscriber, at an admission platform of a network operator associated with the subscriber, and assigning the subscriber limited access rights to the network, the limited access rights being configured for communication between the subscriber and a subscription manager, for reconfiguration of identity information associated with the subscriber.

Provisioning a network subscription

Security key management is provided between a cellular network and a mobile terminal. The mobile terminal and an authentication management node of the cellular network both store a common security key. A key management message is communicated between the cellular network and the mobile terminal. In response to the communication, an intermediate security key specific to the mobile terminal is generated using the stored common authentication key. A session security key is generated using the intermediate security key, for securing a communications session between the cellular network and the mobile terminal.

Efficient cellular network security configuration

Security of communications between a mobile terminal 1 and a cellular network node (base station 3) is enhanced. A communication session transmitted on a first traffic channel '0' is encrypted using a key 'KA'. The security is enhanced by causing the communication channel to change to a second communication channel '7' after a predetermined time, preferably very quickly after establishing the key. In one embodiment the communication channel then changes to a third communication channel '25' after a predetermined time. In another embodiment the communication session is encrypted using a second key 'KB' after causing the communication channel to change to the second communication channel '7'.

Improving security in telecommunications systems

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