| 摘要 |
The invention provides a portable communication device 4, 6, 8 such as a mobile phone, PDA or handheld PC with smart card functionality for use in a smart card system including a host 2. The smart card functionality may be achieved by way of a virtual smart card implemented as a software application, software module or firmware in a memory of the device. The device provides at least one smart card function from authentication, data encryption, access control, secure memory and the provision of digital signatures. A software application may provide one or more smart card functions with reference to data held in a secure data store. The device may be compatible with more than one host. By using a non-dedicated device to provide smartcard functions, users no longer need to carry dedicated smart cards. Furthermore, since the device communicates 10, 12 with the host, the system does not require a smart card reader.
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