METHODS, APPARATUSES AND SOFTWARE FOR INITIATING A CIRCUIT SWITCHED CALL TO A KEY SERVER, FOR RECEIVING INCOMING CIRCUIT SWITCHED CALLS AND FOR ATTACHING A COMPUTER PERIPHERAL DEVICE

摘要

A computer peripheral device configured for attachment to a computing device, the peripheral device including: modem means configured to provide a connection to a wireless network; a secure data store including data encrypted with a key; and an authorisation means, associated with the modem means, the authorisation means configured to request the key from a remote key server by initiating a circuit switched data call to the key server, such that the circuit switched data call includes Calling Line Identification data usable by the key server to authenticate the key request. Alternatively or in addition, the authorisation means is configured to: receive an incoming circuit switched data call from a remote computing device; determine an identity of the remote computer device in the incoming data; and determine whether or not to communicate with the remote computing device based on the determined identity. The incoming data call is typically a GSM data call, and may be used to exchange keys for establishing a subsequent secure communication over a higher data rate network, such as a 3 G network. Ideally the computer peripheral device is associated with a mouse navigational functionality.