Mobility Management Entity, Terminal, and Identity Authentication Method
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United States of America Patent
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Jul 21, 2014
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Jul 21, 2014
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Abstract
A mobility management entity (MME), a terminal and an identity authentication method are disclosed. The MME comprises: a sending unit, configured to send an identity authentication request, an encryption key and a corresponding digital certificate to a terminal when detecting that a mapping relation between a globally unique temporary terminal identity and an international mobile subscriber identity code is lost, so that the terminal is enabled to verify the mobility management entity according to the digital certificate, use the encryption key to encrypt the international mobile subscriber identity code when the verification is successful, and send the encrypted international mobile subscriber identity code to the mobility management entity; a receiving unit, configured to receive the encrypted international mobile subscriber identity code sent by the terminal; and a decrypting unit, configured to decrypt the encrypted international mobile subscriber identity code according to a stored decryption key corresponding to the encryption key.
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