Method for user identity protection
October 14, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and apparatus for privacy and authentication in wireless networks Method and system for restructuring a call signal frame in a cellular mobile telephone system having directory and routing number Method and apparatus for authentication in a communication system System and method for authenticating subscribers of a transmission network and subscription, having differing authentication procedures, using a common authentication center Process of combined authentication of a telecommunication terminal and of a user module Method of facilitating tallgroup calls in a peer communication network Communication system capable of using a plurality of subscriber identity media sharing a single subscriber identity information Method and apparatus for tracking identity-code changes in a communications system Patent #: 6119000 InventorAssigneeApplicationNo. 418387 filed on 10/14/1999US Classes:380/247, CELLULAR TELEPHONE CRYPTOGRAPHIC AUTHENTICATION380/44, Having particular key generator380/46, Nonlinear (e.g., pseudorandom)380/248, Visiting center380/249, Initialization380/259, Symmetric key cryptography380/270, Wireless communication455/410, Security or fraud prevention455/422.1, Zoned or cellular telephone system455/432.2, System format conversion455/436, Handoff455/437Mobile assisted or initiatedExaminersPrimary: Chung, Phung M.Assistant: Callahan, Paul E. Attorney, Agent or FirmForeign Patent References
International ClassH04K 001/44Foreign Application Priority Data1997-04-16 FIAbstractIn the method in accordance with the present invention, the subscriber identifier to be sent to the transmission network is encrypted using a cipher key common to a specific group of subscribers, and a random number is attached to the identifier to be sent to the network. For example, a subscriber group may consist of the subscribers to a single given operator. The section of the identifier specifying the subscriber group is sent to the network in a non-encrypted format, in which case the network is able to direct the encrypted message to such a network element where it can be deciphered.Other References
Field of SearchVisiting centerUsage pattern detection Position dependent or authenticating Symmetric key cryptography Wireless communication Having receiver selection (e.g., pager) Including hand-off based cryptographic alteration Having particular key generator Nonlinear (e.g., pseudorandom) Security or fraud prevention Handoff Mobile assisted or initiated Portable address responsive receiver | |
