Authentication assertions require that the user prove his identity.

认证断言要求用户证实自己的身份。

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It assumes that if the user can prove his identity then he is allowed to register.

它假定用户能证明其身份从而可以进行注册。

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Dylan was given a lift in a patrol car back to his hotel, where his manager produced a passport to prove his identity.

巡逻警车把迪伦送回他住的酒店，他的经理人拿出护照，证明了他的身份。

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When Facebook is suspicious about an account, it asks the owner to prove his identity, even if he has the correct password.

WSJ: Spam Finds a New Target

But after years as a slave and without any document to prove his identity to Georgian police, he stopped trying to escape.

BBC: Slave of the Caucasus

Prosecutors, however, say they have documents which prove his Nazi background, including an SS identity card which shows he was posted to the death camp in Sobibor in 1943 and many witness testimonies.

BBC: Demjanjuk facing Germany charges