FIELD: communication means.
SUBSTANCE: receiving a first authentication vector acquisition request message from a first authentication server function through unified data management, wherein the first authentication vector acquisition request message is intended to obtain an authentication vector corresponding to the terminal device. By means of unified data management receiving the second authentication vector acquisition request message from the second authentication server function, wherein the second authentication vector acquisition request message is intended to obtain an authentication vector corresponding to the terminal device. Through unified data management, the first request message for obtaining the authentication vector and the second request message for obtaining the authentication vector are sequentially processed.
EFFECT: prevention of keys desynchronization.
17 cl, 16 dwg
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