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Class Information
Number: 380/272
Name: Cryptography > Communication system using cryptography > Wireless communication > Including hand-off based cryptographic alteration
Description: Subject matter wherein cryptographic protection is extended or modified by a switch between serving base stations of a mobile receiver.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8707045 Method and apparatus for traffic count key management and key count management Apr. 22, 2014
8666077 Traffic encryption key generation in a wireless communication network Mar. 4, 2014
8666078 Method and system for generating cipher key during switching Mar. 4, 2014
8656480 Method for negotiating security-related functions of subscriber station in wireless portable internet system Feb. 18, 2014
8649514 On-demand switched content encryption Feb. 11, 2014
8588426 Methods and apparatus to secure communications in a mobile network Nov. 19, 2013
8565432 Communications system Oct. 22, 2013
8538026 Key distribution Sep. 17, 2013
8538025 Security performance negotiation method and a TEK management method Sep. 17, 2013
8538024 Method and apparatus for initializing a new stream cipher during handoff Sep. 17, 2013
8533461 Wireless local area network terminal pre-authentication method and wireless local area network system Sep. 10, 2013
8527426 Using smartcards to enable probabilistic transactions on an untrusted device Sep. 3, 2013
8515072 Method and apparatus for providing secure communications for mobile communication devices Aug. 20, 2013
8472628 Method of handling security key change and related communication device Jun. 25, 2013
8468353 Method, system and authentication centre for authenticating in end-to-end communications based on a mobile network Jun. 18, 2013
8442233 Telecommunication systems and encryption of control messages in such systems May. 14, 2013
8443431 Authenticator relocation method for WiMAX system May. 14, 2013
8429728 Pre-registration security support in multi-technology interworking Apr. 23, 2013
8413243 Method and apparatus for use in a communications network Apr. 2, 2013
8406194 Communication system, network handover processing method and apparatus Mar. 26, 2013
8370630 Client device, mail system, program, and recording medium Feb. 5, 2013
8346261 Mobile communication method and switching center Jan. 1, 2013
8331906 Methods, apparatuses, system, and related computer program products for handover security Dec. 11, 2012
8320567 Efficient data path encapsulation between access point and access switch Nov. 27, 2012
8320568 Method, apparatus and system for key derivation Nov. 27, 2012
8289929 Method and apparatus for enabling mobility in mobile IP based wireless communication systems Oct. 16, 2012
8290163 Automatic wireless network password update Oct. 16, 2012
8285990 Method and system for authentication confirmation using extensible authentication protocol Oct. 9, 2012
8284941 Changing radio access network security algorithm during handover Oct. 9, 2012
8275133 Method and system for mobile communications Sep. 25, 2012
8249256 Method for providing fast secure handoff in a wireless mesh network Aug. 21, 2012
8233934 Method and system for providing access via a first network to a service of a second network Jul. 31, 2012
8218769 Encrypted communication system, communication status management server, encrypted communication method, and communication status management method Jul. 10, 2012
8204044 Method and network element for voice-over-IP (VoIP) communications in a mobile IP network Jun. 19, 2012
8194607 Handover control method and apparatus for efficiently buffering packets in wimax network Jun. 5, 2012
8121293 System for ensuring encrypted communication after handover Feb. 21, 2012
8117454 Fast update message authentication with key derivation in mobile IP systems Feb. 14, 2012
8107629 Method of providing security for relay station Jan. 31, 2012
8086843 Performing cryptographic provider failover Dec. 27, 2011
8078872 Method, system and device for determining a mobile IP key, notifying a mobile IP type Dec. 13, 2011
8036385 Apparatus and method for applying ciphering in a universal mobile telecommunications system Oct. 11, 2011
8027304 Secure session keys context Sep. 27, 2011
8019083 Method, apparatus and system for key derivation Sep. 13, 2011
8005224 Token-based dynamic key distribution method for roaming environments Aug. 23, 2011
7991161 System and method for automatic security authentication in wireless networks Aug. 2, 2011
7961668 Method and apparatus for synchronizing a smart antenna apparatus with a base station transceiver Jun. 14, 2011
7936880 Method, apparatus and system for key derivation May. 3, 2011
7900039 TLS session management method in SUPL-based positioning system Mar. 1, 2011
7881475 Systems and methods for negotiating security parameters for protecting management frames in wireless networks Feb. 1, 2011
7881470 Network mobility security management Feb. 1, 2011

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