| 6978373 |
Methods systems and computer program products for providing secure client profile completion by network intermediaries |
| Dec-20-2005 |
Methods, systems and computer program products are provided which provide profile information associated with a client to a server by generating, at the client, a profile document containing profile information... |
| 6978023 |
Apparatus and method for location based wireless client authentication |
| Dec-20-2005 |
An apparatus and method for location based wireless client authentication is described. The method includes the receipt of an authentication/access request from a wireless client desiring access to a wireless... |
| 6876747 |
Method and system for security mobility between different cellular systems |
| Apr-5-2005 |
Method and system for providing security mobility between two cellular systems. One or more ciphering keys are generated for a second cellular system by an interoperability authentication center at a first... |
| 6850909 |
Using smartcards to enable probabilistic transactions on an untrusted device |
| Feb-1-2005 |
The present invention permits a user to conduct remote transactions without a network while using an untrusted computing device, such as a hand-held personal digital assistant or a laptop computer. The... |
| 6829358 |
Processing channel resets while performing a ciphering configuration change in a wireless communications protocol |
| Dec-7-2004 |
A first station communicates with a second over first and second channels. The first station includes first and second ciphering configurations, and a ciphering engine. The ciphering engine uses the first... |
| 6771776 |
Method and apparatus for re-synchronization of a stream cipher during handoff |
| Aug-3-2004 |
A method and apparatus for re-synchronizing a stream cipher during soft handoff. Transmitted quasi-secret keying information is used with a secret key to reinitialize a stream cipher generator located... |
| 6594489 |
Method and apparatus for effecting handoff between different cellular communications systems |
| Jul-15-2003 |
A method of effecting handoff of a mobile station from a first base station in a first cellular communications system controlled by a first mobile switching control station to a second base station in... |
| 6587680 |
Transfer of security association during a mobile terminal handover |
| Jul-1-2003 |
An existing security association is re-established when a communication handover event occurs in a radio communications system such as IEEE 082.11 or a HIPERLAN wherein the existing security association... |
| 6556681 |
Reconfigurable universal trainable transmitter |
| Apr-29-2003 |
A trainable transmitter comprises a transmitter, code-generation circuitry and a removable, plug-in data module. The data module includes information necessary for generating a code for a specific security... |
| 6336186 |
Cryptographic system and methodology for creating and managing crypto policy on certificate servers |
| Jan-1-2002 |
A cryptosystem having a Certificate (Key) Server for storing and maintaining certificate or key information in a certificate database is described. The Certificate Server allows clients to submit and retrieve... |
| 6201871 |
Secure processing for authentication of a wireless communications device |
| Mar-13-2001 |
The invention provides technology that improves the security of the A-Keys in a wireless communications system. The technology effectively prevents any human access to the A-Keys and eliminates cloning.... |
| 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 |
The mobile station comprises Traffic Identification Encryption means (TIE) and a memory (54) for storing at least one authentication number (A-key). According to the invention, the protection system comprises... |
| 5966450 |
Variable mask for encryption generated independently at communications stations |
| Oct-12-1999 |
Frames of data are encrypted by combining each of the frames with a mask that varies from frame to frame. The mask is obtained by using a frame counter as the seed for a pseudo random number generator,... |
| 5778075 |
Methods and systems for mobile terminal assisted handover in an private radio communications network |
| Jul-7-1998 |
Mobile assisted handover of an encrypted traffic connection between linked base stations of a private radio communications network are provided in a system including a plurality of base stations and a... |
| 5754957 |
Method for performing a high speed automatic link transfer in a wireless personal communication system |
| May-19-1998 |
A method of implementing an improved automatic link transfer for high mobility use in a wireless personal communication system is provided. The method includes retuning a subscriber unit to a new radio... |
| 5546464 |
Method of and apparatus for selective resynchronization in a digital cellular communications system |
| Aug-13-1996 |
In a ciphered digital cellular communications system a method and apparatus are presented for selective resynchronization of the cipher upon initial channel acquisition or handoff. Where synchronization... |
| 5471532 |
Method of rekeying roaming communication units |
| Nov-28-1995 |
A method of providing over the air rekeying information to roaming communication units in a secure wide area communications system including a home key unit 101, a first key unit 102, and second key unit... |
| 5325419 |
Wireless digital personal communications system having voice/data/image two-way calling and intercell hand-off |
| Jun-28-1994 |
A wireless digital personal communications system (or PCS) having a plurality of intelligent base stations and portable handset terminals, each having a predetermined radio cell coverage area. The radio... |
| 5293423 |
Synchronizing method in a mobile radio system |
| Mar-8-1994 |
A synchronizing method in a mobile radio system which operates with Time Division Multiple Access (TDMA) but which lacks global time reference for all base stations and mobiles in the system. The inventive... |
| 5243653 |
Method and apparatus for maintaining continuous synchronous encryption and decryption in a wireless communication system throughout a hand-off |
| Sep-7-1993 |
In a wireless communication system comprising a plurality of fixed communication units (FCUs) (102) and portable communication units (PCUs) (120), each comprising an encryption synchronization counter... |
| 5239294 |
Method and apparatus for authenication and protection of subscribers in telecommunication systems |
| Aug-24-1993 |
Radio frequency based cellular telecommuication systems often require a subscriber (10) to maintain a proprietary identifier (19) or serial number (18) which is transmitted to a fixed network communication... |
| 5199072 |
Method and apparatus for restricting access within a wireless local area network |
| Mar-30-1993 |
User module (12) access capabilities are provided within a wireless Local Area Network (LAN) having distinct user groups (1-3). In this effort, a password is entered into a UM (12) seeking access within... |
| 5081679 |
Resynchronization of encryption systems upon handoff |
| Jan-14-1992 |
A system for the synchronization of encryption and decryption in a duplex cellular radio system in which an encrypted call may be switched from one cell to another. At the instant of handoff, a rapid first... |
| 4549308 |
Secure mobile radio telephony |
| Oct-22-1985 |
An arrangement for generating an encryption key for use in encrypting communications between a mobile radio telephone unit and a base station is disclosed which can be readily changeable in real time.... |
