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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:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 5546464 |
Method of and apparatus for selective resynchronization in a digital cellular communications system |
Aug. 13, 1996 |
| 5471532 |
Method of rekeying roaming communication units |
Nov. 28, 1995 |
| 5325419 |
Wireless digital personal communications system having voice/data/image two-way calling and intercell hand-off |
Jun. 28, 1994 |
| 5293423 |
Synchronizing method in a mobile radio system |
Mar. 8, 1994 |
| 5243653 |
Method and apparatus for maintaining continuous synchronous encryption and decryption in a wireless communication system throughout a hand-off |
Sep. 7, 1993 |
| 5239294 |
Method and apparatus for authenication and protection of subscribers in telecommunication systems |
Aug. 24, 1993 |
| 5199072 |
Method and apparatus for restricting access within a wireless local area network |
Mar. 30, 1993 |
| 5081679 |
Resynchronization of encryption systems upon handoff |
Jan. 14, 1992 |
| 4549308 |
Secure mobile radio telephony |
Oct. 22, 1985 |
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