| 摘要 |
A method for verifying the authenticity and integrity of a file which has been received or is to be transmitted by a computer (14) and which is provided with a digital signature, accesses for verification signals which are available at an interface (18) of the computer with an output device (16) for outputting the file provided with the digital signature. A device (20) for carrying out the method according to the invention comprises a circuit and a program which are used to perform the verification in the device (20) and in a manner logically separate from the central calculating unit of the computer (14), the device (20) being coupled to an interface (18) of the computer (14) with an output device (16) in such a way that it detects the signals used for the verification for outputting the file provided with the digital signature.
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