| 摘要 |
A method for effecting a secure electronic transaction on a terminal using a portable data carrier is proposed. According to the method a user ( 30 ) first authenticates himself vis-à-vis the portable data carrier ( 20 ). The portable data carrier ( 20 ) at the same time produces quality information about how authentication was done. The authentication is confirmed to the terminal ( 14 ). Then the portable data carrier ( 20 ) performs a security-establishing operation within the transaction, for example the creation of a digital signature. It attaches the quality information to the result of the security-establishing operation.
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