| 摘要 |
A chip card unit (13) pertaining to a mobile radio telephone, for instance, is connected to an interface (12) for a computer via a control unit (11) enabling the mobile radio telephone (10) to operate as a card terminal when coupled to a computer (30). When the computer (30) is connected to a telecommunication network (40), occupation of network services by service providers (50) is also possible. Chip card applications include mutual client-server authentication, verification of access rights, digital signature for sensitive data, generation of keys to encrypt data, proof of ordering, payment from an electronic purse, etc.
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