| 7035412 |
WLAN error control |
| Apr-25-2006 |
A method in a wireless communications network is disclosed whereby errors due to incorrect transmission of scrambler seed values can be very greatly reduced. This is achieved by using a known pseudo-random... |
| 7024553 |
System and method for updating encryption key for wireless LAN |
| Apr-4-2006 |
System for updating an encrypted key, by means of which the WEP of IEEE 802.11 can be applied to a wireless LAN system having plural APs and a large number of STAs. A key management server is LAN-connected... |
| 7020502 |
Transmitter for remote control system |
| Mar-28-2006 |
A transmitter has a dummy load circuit. The dummy load circuit is driven prior to writing of a rolling code into a memory. It consumes the amount of power corresponding to the amount of power consumed... |
| 6981146 |
Method of communications and communication network intrusion protection methods and intrusion attempt detection system |
| Dec-27-2005 |
The intrusion protection method and system for a communications network provides address agility wherein the cyber coordinates of a target host are changed both on a determined time schedule and when an... |
| 6981137 |
System for broadcasting to, and programming, a mobile device in a protocol |
| Dec-27-2005 |
The present invention is directed, in one embodiment, to a programming interface which enables device/protocol/network independent transmission of messages to, and programming of, mobile devices. In another... |
| 6980795 |
Wireless network with a cipher key change procedure |
| Dec-27-2005 |
A wireless network employing a radio network controller and a plurality of assigned terminals which are provided for coding certain data to be transmitted over traffic and control channels and which are... |
| 6978367 |
Selective data encryption using style sheet processing for decryption by a client proxy |
| Dec-20-2005 |
A method, system, and computer program product for selectively encrypting one or more elements of a document using style sheet processing. Disclosed is a policy-driven augmented style sheet processor (e.g.... |
| 6975727 |
Dynamic security credential generation system and method |
| Dec-13-2005 |
An apparatus and method dynamically creates security keys for a subscriber, having at least one preexisting security credential set, and allows the configuration for N key pairs or N keys (where the cryptographic... |
| 6961849 |
Selective data encryption using style sheet processing for decryption by a group clerk |
| Nov-1-2005 |
A method, system, and computer program product for selectively encrypting one or more elements of a document using style sheet processing. Disclosed is a policy-driven augmented style sheet processor (e.g.... |
| 6941459 |
Selective data encryption using style sheet processing for decryption by a key recovery agent |
| Sep-6-2005 |
A method, system, and computer program product for selectively encrypting one or more elements of a document using style sheet processing. Disclosed is a policy-driven augmented style sheet processor (e.g.... |
| 6937726 |
System and method for protecting data files by periodically refreshing a decryption key |
| Aug-30-2005 |
Methods for transferring among key holders in encoding and cryptographic systems the right to decode and decrypt messages in a way that does not explicitly reveal decoding and decrypting keys used and... |
| 6931532 |
Selective data encryption using style sheet processing |
| Aug-16-2005 |
A method, system, and computer program product for selectively encrypting one or more elements of a document using style sheet processing. Disclosed is a policy-driven augmented style sheet processor (e.g.... |
| 6928551 |
Method and apparatus for selectively denying access to encoded data |
| Aug-9-2005 |
A method and system is provided for selectively denying access to encoded data. Encryption is used to protect secured data on any of a number of media devices in a system and in which unsecured data is... |
| 6907127 |
Hierarchical key management encoding and decoding |
| Jun-14-2005 |
The present invention discloses a construction for key management module functionality which provides for secure encoding and decoding of messages which are up to two blocks long. A method for generating... |
| 6870932 |
Frame number identification and ciphering activation time synchronization for a wireless communications protocol |
| Mar-22-2005 |
A received PDU is sequentially identified by an n-bit frame number (FN) and an m-bit hyper frame number (HFN), which are synchronously maintained on first and second stations. The second station determines... |
| 6839436 |
Method for providing long-lived broadcast encrypton |
| Jan-4-2005 |
A long-lived broadcast encryption method that adapts to the presence of compromised keys and continues to broadcast securely to privileged sets of users over time. In one aspect, a method for providing... |
| 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... |
| 6826689 |
Method and system for emulating a secret code between two hardware modules |
| Nov-30-2004 |
A method and system for emulating a secret code between a first hardware module to a second hardware module. First, the secret code that is initially stored in the first hardware module is transformed... |
| 6813355 |
Method and arrangement for ciphering information transfer |
| Nov-2-2004 |
The invention relates to a method and arrangement for ciphering an information transfer connection. The invention can be advantageously applied in a TDMA (Time Division Multiple Access) cellular system... |
| 6785809 |
Server group key for distributed group key management |
| Aug-31-2004 |
A method and apparatus for distributed group key management for multicast security. According to one aspect of the invention, a common multicast group includes a number of key servers, as well as clients... |
| 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... |
| 6766024 |
Data communication system |
| Jul-20-2004 |
A system for decrypting an encrypted message comprises first and second decryption devices, the first decryption device having a higher security than the second decryption device. The system further comprises... |
| 6765497 |
Method for remotely accessing vehicle system information and user information in a vehicle |
| Jul-20-2004 |
A communication system includes a vehicle (101) and an infrastructure (160). The vehicle contains vehicle system information (104) and user information (112). The infrastructure includes a processor (154)... |
| 6748082 |
Method and device for introducing a service key into a terminal |
| Jun-8-2004 |
A simple, efficient and reliable introduction of a service key into a terminal is made possible by a method for introducing a service key into a terminal where the terminal can use the service key to decrypt... |
| 6674860 |
Method and arrangement for managing a service in a mobile communications system |
| Jan-6-2004 |
The invention pertains to a method and arrangement for managing a service in a mobile communications system, mobile station and an intelligent module in a mobile station. An idea of the invention is that... |
| 6603857 |
Method and apparatus for controlling release of time sensitive information |
| Aug-5-2003 |
A method and apparatus for controlling release of time-sensitive information is accomplished by a server that establishes access information for a specific future time which only becomes active once the... |
| 6590981 |
System and method for secure cryptographic communications |
| Jul-8-2003 |
An apparatus and method for secure cryptographic communications between a sender and a receiver or multiple receivers that includes first and second timing elements, and first and second key storage units... |
| 6577734 |
Data encryption key management system |
| Jun-10-2003 |
The secure management of encryption keys is obtained by preventing external access thereto and ensuring that the keys do not leave an encryption unit in their original form. This result is obtained via... |
| 6560338 |
Limiting delays associated with the generation of encryption stream ciphers |
| May-6-2003 |
A method and an apparatus for generating encryption stream ciphers are based on a recurrence relation designed to operate over finite fields larger than GF(2). A non-linear output can be obtained by using... |
| 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... |
| 6504932 |
Method of transferring information between a subscriber identification module and a radiocommunication mobile terminal, and a corresponding subscriber identification module and mobile terminal |
| Jan-7-2003 |
A method of transferring information between a subscriber identification model and a mobile terminal constituting a station of a radiocommunication system in which at least some of the information transferred... |
| 6483919 |
Method and arrangement for establishing an encrypted mobile connection |
| Nov-19-2002 |
In a method and an arrangement for establishing an encrypted connection between a mobile station and a base transceiver station in a mobile telephone system, the base transceiver station makes sure, before... |
| 6339646 |
Slotted mode code usage in a cellular communications system |
| Jan-15-2002 |
The downlink channelization code limitation problem encountered in spread spectrum or CDMA cellular systems is resolved by using codes from a different, non-orthogonal code set when operating in the slotted... |
| 6333983 |
Method and apparatus for performing strong encryption or decryption data using special encryption functions |
| Dec-25-2001 |
A method and apparatus for decrypting an input block encrypted under a predetermined key in a cryptographic system having a cryptographic facility providing cryptographic functions for transforming blocks... |
| 6295361 |
Method and apparatus for multicast indication of group key change |
| Sep-25-2001 |
A method and apparatus to allow a key manager node in a network to initiate the process of changing a group key for all nodes in a multicasting group. In the described embodiment, the key manager node... |
| 6157723 |
Method and apparatus for secure communications with encryption key scheduling |
| Dec-5-2000 |
A communication device (122) supports secure communications using automated encryption key scheduling. The communication device (122) is provided with access to one or more schedules having entries of... |
| 6137885 |
Method for enabling direct encrypted communication between two terminals of a mobile radio network, and corresponding station and terminal facilities |
| Oct-24-2000 |
A method for enabling encrypted communication to be performed directly in a single hop or merely directly between two terminals of a mobile radio network by satellite and/or of the GSM/DCS type, after... |
| 6128391 |
Method and apparatus for asymetric key management in a cryptographic system |
| Oct-3-2000 |
A method and apparatus for asymmetrical key management in a cryptographic system is provided. Embodiments of the invention implement varying levels of diversification to manage the encryption keys. In... |
| 6128389 |
Authentication key management system and method |
| Oct-3-2000 |
A system and method for enabling sensitive authentication information to be under the control of the service provider and transmitting only non-sensitive authentication information to the AC, and for providing... |
| 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... |
| 6094487 |
Apparatus and method for encryption key generation |
| Jul-25-2000 |
An encryption key generation system generates encryption keys at both an originating terminal and a terminating terminal of a wireless network. A central controller generates a shared secret based on the... |
| 6088449 |
Tri-signature security architecture systems and methods |
| Jul-11-2000 |
An encryption system and method utilizes a bit stream, called a "master signature", which is divided into bytes with each byte being assigned a byte address. A portion of the master signature, called an... |
| 6081601 |
Method of implementing connection security in a wireless network |
| Jun-27-2000 |
The invention relates to a method of providing connection security for a connection between terminals in a wireless network. In the method data is transmitted from a first terminal (MS1) via nodes in the... |
| 6047071 |
Network-initiated change of mobile phone parameters |
| Apr-4-2000 |
The procedure for Over-The-Air Parameter Administration (OTAPA) utilizes the over-the-air programming protocol and procedures which support the Over-The-Air Service Provisioning (OTASP) feature in accordance... |
| 6047070 |
Process for ensuring a securing interface between a telephone with a card and the network in a telephone system |
| Apr-4-2000 |
In the method for dialing only preprogrammed telephone numbers, it is provided that when there is a desire for access or connection, the telephone number is transmitted from the telephone to the card,... |
| 6043752 |
Integrated remote keyless entry and ignition disabling system for vehicles, using updated and interdependent cryptographic codes for security |
| Mar-28-2000 |
A remote-control unit for vehicles in which an immobilizer facility and keyless entry facility are united to enable bidirectional transmission. Further, a cost reduction is achieved by decreasing the number... |
| 6026165 |
Secure communications in a wireless system |
| Feb-15-2000 |
Disclosed are three major aspects relating to wireless transmission of encrypted data messages in a security system wherein the receiver stores locally an encryption key utilized by the transmitting device... |
| 5991405 |
Method for dynamically updating cellular phone unique encryption keys |
| Nov-23-1999 |
In a method for dynamically updating a cellular-phone-unique-encryption key previously stored in, and common to, each of a cellular phone and an associated home location register (HLR) for providing security... |
| 5966443 |
Method for correcting subscriber-based secure call keys |
| Oct-12-1999 |
A key variable correction scheme allows errored encryption key material in mobile and portables radios to be quickly identified and corrected. The errored encryption material can be corrected automatically... |
| 5940509 |
Method and apparatus for controlling country specific frequency allocation |
| Aug-17-1999 |
A secure communication system is provided for transmitting a country specific frequency allocation in encrypted form between a host processor and a remote device. The secure communication system comprises... |
