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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:
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Patent Number Title Of Patent Date Issued
7873165 Tactical radio with integrated satcom capability Jan. 18, 2011
7840008 Method and apparatus for decrypting a communication Nov. 23, 2010
7813511 Facilitating mobility for a mobile station Oct. 12, 2010
7801517 Methods, systems, and computer program products for implementing a roaming controlled wireless network and services Sep. 21, 2010
7765402 System and methods for the wireless delivery of a message Jul. 27, 2010
7734049 Data transmission method, user equipment and GPRS/EDGE radio access network Jun. 8, 2010
7735126 Certificate based authentication authorization accounting scheme for loose coupling interworking Jun. 8, 2010
7664265 Controlling communications between stations Feb. 16, 2010
7653200 Accessing cellular networks from non-native local networks Jan. 26, 2010
7639817 Method for scrambling packet data using variable slot length and apparatus thereof Dec. 29, 2009
7602917 Method of ciphering data transmission in a radio system Oct. 13, 2009
7562224 System and method for multi-session establishment for a single device Jul. 14, 2009
7542569 Security of data connections Jun. 2, 2009
7522727 Method and apparatus for providing authentication in a communication system Apr. 21, 2009
7516486 Communication between a private network and a roaming mobile terminal Apr. 7, 2009
7512973 Wireless-access-provider intermediation to facilliate digital rights management for third party hosted content Mar. 31, 2009
7403621 System for ensuring encrypted communication after handover Jul. 22, 2008
7400731 Scalable technique for ensuring real-time, end-to-end security in a multimedia mobile network Jul. 15, 2008
7380124 Security transmission protocol for a mobility IP network May. 27, 2008
7308104 Forward multiple scrambling code generating method and apparatus Dec. 11, 2007
7298849 Method and apparatus for simultaneous encryption and decryption of publicly distributed media Nov. 20, 2007
7289630 Counter initialization, particularly for radio frames Oct. 30, 2007
7275157 Facilitating 802.11 roaming by pre-establishing session keys Sep. 25, 2007
7221764 Security key distribution using key rollover strategies for wireless networks May. 22, 2007
7203318 Secure transmission system for a digital trunked radio system Apr. 10, 2007
7184554 Wireless device management Feb. 27, 2007
7158640 Method and apparatus for re-synchronization of a stream cipher during handoff Jan. 2, 2007
7158641 Recorder Jan. 2, 2007
7155607 Method for authentication between apparatuses using challenge and response system Dec. 26, 2006
7127742 Establishing a secure connection with a private corporate network over a public network Oct. 24, 2006
7123719 Method and apparatus for providing authentication in a communication system Oct. 17, 2006
7116738 Data synchronization apparatus and method Oct. 3, 2006
7113600 Base transceiver station automatic encryption handling Sep. 26, 2006
7047405 Method and apparatus for providing secure processing and data storage for a wireless communication device May. 16, 2006
6978023 Apparatus and method for location based wireless client authentication Dec. 20, 2005
6978373 Methods systems and computer program products for providing secure client profile completion by network intermediaries Dec. 20, 2005
6876747 Method and system for security mobility between different cellular systems Apr. 5, 2005
6850909 Using smartcards to enable probabilistic transactions on an untrusted device Feb. 1, 2005
6829358 Processing channel resets while performing a ciphering configuration change in a wireless communications protocol Dec. 7, 2004
6771776 Method and apparatus for re-synchronization of a stream cipher during handoff Aug. 3, 2004
6594489 Method and apparatus for effecting handoff between different cellular communications systems Jul. 15, 2003
6587680 Transfer of security association during a mobile terminal handover Jul. 1, 2003
6556681 Reconfigurable universal trainable transmitter Apr. 29, 2003
6336186 Cryptographic system and methodology for creating and managing crypto policy on certificate servers Jan. 1, 2002
6275585 Method for reprogramming a vehicle system or a user system in a vehicle Aug. 14, 2001
6201871 Secure processing for authentication of a wireless communications device Mar. 13, 2001
6108424 Mobile radio telephone station comprising a protection system for at least one authentication number and method of protecting an authentication number Aug. 22, 2000
5966450 Variable mask for encryption generated independently at communications stations Oct. 12, 1999
5778075 Methods and systems for mobile terminal assisted handover in an private radio communications network Jul. 7, 1998
5754957 Method for performing a high speed automatic link transfer in a wireless personal communication system May. 19, 1998

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