| 摘要 |
A first device receives, from a second device, a first request to set up an account, where the first request includes a shared key and information associated with the second device, where the shared key is calculated based on a private key, of a private key/public key pair, and information regarding an identity selection, from user identity information, associated with a user of the second device; and store the shared key in a memory. The first device receives, from the second device, a second request to log in to the account, where the second request includes a first webtoken and information associated with the second device, where the first webtoken is calculated based on the shared key and a first time interval; retrieves the shared key; generates a second webtoken based on the shared key and a second time interval; performs an authentication operation by comparing the first webtoken and the second webtoken; and permits the second device to access the account when the first webtoken matches the second webtoken.
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