| 摘要 |
An authentication method, system and device are provided by the embodiments of the present invention. Said method includes the following steps: an Application Server (AS) receives an AS access request, which carries a user identifier, transmitted by a User Equipment (UE); the AS generates a key generation request based on the user identifier and transmits it to a network side; the AS receives the key transmitted by the network side, and authenticates the UE according to the key. In the present invention, generating the key between a terminal without a card and the AS is implemented, and the AS authenticates the UE using the generated key, and the security of the data transmission is improved.
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