| 摘要 |
<p>A method and system for authorization key context information in mobile terminal handover procedure is to solve the problem that related sequence number information in authorization key context of target base station is not identical with that of the mobile terminal in existing technology. In technical solution of the present invention, a authenticator/key contributor to which the mobile terminal currently belongs creates authorization key between mobile terminal and target base station and context information thereof when the terminal request for a handover, the context information including current authorization key sequence number, uplink management message authentication code sequence number and/or current downlink management message authentication code sequence number; and transmits the authorization key and related sequence number information to a key receiver, to which the target base station of mobile station handover belongs, when it request for the authorization key. Thus, the continuity of sequence number information is kept, possible replay attack is efficiently prevented, and session security after restore is ensured.</p> |
