| 摘要 |
A method and communications system is provided for electronically signing a message in a mobile radio telephonehe invention. A personal computer can communicate directly with a mobile radio telephone which can act as a signing device, via a communications network. An electronic fingerprint is first generated from a message to be signed in a personal computer. The electronic fingerprint is sent by the personal computer via a communications network to a selectable mobile radio telephone, which contains a signing device. The received electronic fingerprint is signed in the mobile radio telephone and returned to the personal computer.
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