| 摘要 |
A method and a server are configured to provide, in a tamperproof manner, a key certificate for a public device key of a user device, which is installed for a user, by means of a server belonging to a service provider who provides the user with a service via the user device, wherein the server provides the user device with the key certificate if a signing request message received by the user device is successfully verified by the server using a one-time password generated for the user device by the server.
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