Patent ID: 11909869
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. A communication method, comprising: receiving, by a security anchor function (SEAF), an N1 message from UE, wherein:
the N1 message carries an encrypted identifier of the UE, the N1 message further carries a Diffie-Hellman (DH) public parameter or a DH public parameter index, and the encrypted identifier is obtained by encrypting a permanent identifier of the UE and a first DH public key; and sending, by the SEAF, a first access authentication request to an authentication server function (AUSF), wherein the first access authentication request carries the DH public parameter or the DH public parameter index, and wherein the first access authentication request further caries the encrypted identifier; receiving, by the SEAF, a first access authentication response that is used to respond to the first access authentication request and that is sent by the AUSF, wherein the first access authentication response carries a 5G authentication vector and the permanent identifier of the UE, the 5G authentication vector comprises a hashed expected authentication result, and the hashed expected authentication result is derived based on an expected authentication result, the first DH public key, and a second DH public key;
sending, by the SEAF to the UE, an authentication request carrying a random number; and
receiving, by the SEAF from the UE, an authentication response used to respond to the authentication request, wherein the authentication response carries an authentication result calculated based on a root key and the random number.