| 摘要 |
<p>The present invention belongs to the technical field of mobile communication and smart card application, and specially provides a method for enhancing the security of a subscriber identity module (SIM). For the phenomenon that illegal copy and embezzlement of the SIM often exist in a mobile communication system, the invention adopts the idea of combination of active defence and dynamic management. By performing function expansion and enhancement on a part of the function entities in the mobile communication system and adding new security data and operation process, the invention realizes the hiding and protection of the original security data so that the user can actively perform the prevention in advance, supervision in process, and postmortem control on the security during the usage of the SIM. Thus the illegal copy and embezzlement of the SIM are prevented and the profits of the subscriber and the operator are protected.</p> |
