| 7039397 |
User-assisted programmable appliance control |
| May-2-2006 |
A universal remote control interacts with a user to assist in training to one or more appliances. If the appliance is activated by a rolling code activation signal, a sequence of different rolling code... |
| 7039190 |
Wireless LAN WEP initialization vector partitioning scheme |
| May-2-2006 |
In one embodiment, an authentication method features the generation of an initialization vector at a first electronic device and the determination at the first electronic device whether the initialization... |
| 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... |
| 7010697 |
System for dynamically encrypting information for secure internet commerce and providing embedded fulfillment software |
| Mar-7-2006 |
A data distribution system is provided which supplies customers with an executable for requested secured data files to provide the customer with fulfillment software, obviating the need for the customer... |
| 7000111 |
Method for masking secret multiplicands |
| Feb-14-2006 |
A mobile terminal for use in a mobile communications system includes a SIM card storing subscriber related data. For security, the SIM card performs secret cryptographic calculations with secret numbers.... |
| 6996722 |
Data communications |
| Feb-7-2006 |
In a data communications system a remote data source outputs data as a series of application data units (ADUs). Each ADU is individually encrypted with a different key. The keys are transmitted (for example... |
| 6993134 |
Key exchange via a portable remote control device |
| Jan-31-2006 |
The communications means that are commonly provided for the remote control of electronic components are utilized to effect an exchange of parameters to facilitate a cryptographic key exchange. The bidirectional... |
| 6990204 |
Interface security system and method |
| Jan-24-2006 |
In an interface security system between a plurality of devices mutually connected and transmitting/receiving a signal, the respective devices include respective selectors selecting a connection pattern... |
| 6986056 |
Method and arrangement for generating binary sequences of random numbers |
| Jan-10-2006 |
A method and arrangement for generating binary sequences of random numbers uses the principle of random selection of the path of photons on a beam splitter and generating a random number by using two detectors... |
| 6983369 |
Authentication system, and contents-information sender and receiver |
| Jan-3-2006 |
First information is sent from a contents-information receiver apparatus to a contents-information sender apparatus. The first information includes a combination of certificate information and second information... |
| 6980971 |
Copyright management apparatus, copyrighted-work distribution apparatus, and copyrighted-work distribution and receiving system |
| Dec-27-2005 |
A TV music broadcasting program is distributed from a distribution apparatus through a ground station and a satellite, and a musical-piece program is also distributed through a plurality of audio channels.... |
| 6980655 |
Rolling code security system |
| Dec-27-2005 |
A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted... |
| 6975730 |
Method and apparatus for contents information |
| Dec-13-2005 |
A first-key signal representative of a first key is generated from first-key base information being a base of the first key. Contents information is encrypted into encryption-resultant contents information... |
| 6973191 |
System and method for generating symmetric keys within a personal security device having minimal trust relationships |
| Dec-6-2005 |
A data processing method and system for generating a unique symmetric key inside a PSD having limited trust relationships between PSD manufacture, PSD issuer, subsequent service providers and a trusted... |
| 6961427 |
Methods and apparatus for keystream generation |
| Nov-1-2005 |
Methods and apparatus for the generation of a cryptographic one way function (a key or keystream generator) for use in encrypting or decrypting binary data. A non-linear key or keystream generation algorithm... |
| 6944765 |
Method of authentication anonymous users while reducing potential for "middleman" fraud |
| Sep-13-2005 |
A method of authenticating anonymous users while reducing potential for "middleman" fraud includes the step of constructing a puzzle in response to information received from a software user. The puzzle... |
| 6944299 |
Method for synchronous encryption over a communication medium |
| Sep-13-2005 |
An apparatus and method provide for synchronized operation of encryption processes at two remote communication terminals. A first one of the terminals detects information associated with a current time... |
| 6944300 |
Method for migrating a base chip key from one computer system to another |
| Sep-13-2005 |
A method for migrating a base chip key from a first computer system to a second computer system is disclosed. A first computer system includes a base chip key 1, and a second computer system includes... |
| 6934846 |
Method of generating unpredictable and auditable random numbers |
| Aug-23-2005 |
A system and method for generation of unpredictable and auditable random numbers includes a host computer, a digital signature server and a verification device. The host computer provides data to the digital... |
| 6931132 |
Secure wireless local or metropolitan area network and related methods |
| Aug-16-2005 |
A secure wireless local or metropolitan area network and data communications device therefor are provided, where the device transmits plain text in an encrypted message including cipher text and an initialization... |
| 6928423 |
Copyright management apparatus, copyrighted-work distribution apparatus, and copyrighted-work distribution and receiving system |
| Aug-9-2005 |
A TV music broadcasting program is distributed from a distribution apparatus through a ground station and a satellite, and a musical-piece program is also distributed through a plurality of audio channels.... |
| 6920557 |
System and method for wireless user interface for business machines |
| Jul-19-2005 |
A method and system for providing external user interfaces is described. In one configuration a co-located external processor and a business machine negotiate a communications connection. The co-located... |
| 6892308 |
Internet protocol telephony security architecture |
| May-10-2005 |
A system is provided in which a client/server/network can implement a key management session when the server initiates the key management session utilizing a nonce. The nonce allows a wakeup or trigger... |
| 6891952 |
Dynamic key generation and confidential synchronization of encryption components |
| May-10-2005 |
This invention report describes the architecture of a system, which undertakes in a new way the dynamic generation of symmetrical keys and the confidential synchronization of encryption components which... |
| 6886098 |
Systems and methods for compression of key sets having multiple keys |
| Apr-26-2005 |
Systems, methods and a modulated data signal are described herein that provide an efficient way to derive a single key from which a user can extract virtually any number of data encryption keys. A database... |
| 6848050 |
System and method for alternative encryption techniques |
| Jan-25-2005 |
A system and method for verifying the identification of a user and securely establishing an encryption key for a communication between the user and a verifying entity, such as a bank, which makes use of... |
| 6847286 |
Method for authenticating a spare key for using a vehicle |
| Jan-25-2005 |
In a method for authenticating a spare key for use with a vehicle in the absence of the regular key, the spare key is provided with an identification number that is transmitted to, and checked by, a central... |
| 6829357 |
Communication system having a transmitter and a receiver that engage in reduced size encrypted data communication |
| Dec-7-2004 |
A communication system (10) has a portion (28) of a transmitter controller (14) that provides a message package. An encryption portion (36) of the controller (14) encrypts a first fraction of the message... |
| 6829355 |
Device for and method of one-way cryptographic hashing |
| Dec-7-2004 |
The present invention is a device for and method of generating a hash value for a message by padding the message, loading the padded message into a first shift register that generates values according... |
| 6823457 |
Method and system for verifying control accesses between a device on a non-proprietary bus and a device on a proprietary bus |
| Nov-23-2004 |
A method for verifying control accesses between a device on a non-proprietary bus and a device on a proprietary bus is disclosed. A gateway controller is connected between a proprietary bus and a non-proprietary... |
| 6816968 |
Consumable authentication protocol and system |
| Nov-9-2004 |
This invention concerns a consumable authentication protocol for validating the existence of an untrusted authentication chip, as well as ensuring that the authentication chip lasts only as long as the... |
| 6810123 |
Rolling code security system |
| Oct-26-2004 |
A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted... |
| 6785390 |
System and method for asynchronous decryption |
| Aug-31-2004 |
A system and method of receiving and decrypting encrypted data using a key based upon an initial key used for encryption that is received at a receiving unit whereby a key is generated from the initial... |
| 6778670 |
Method and apparatus for encryption and decryption |
| Aug-17-2004 |
A method and apparatus are provided for encrypting a stream of data transmitted within a frame. The method includes determining a first initialization state in a first preselected interval, and determining... |
| 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... |
| 6748539 |
System and method for securely checking in and checking out digitized content |
| Jun-8-2004 |
A system and method for permitting the rental of digitized content such as music from a kiosk includes a flash memory device that is insertable into the kiosk. The kiosk derives a content key from a media... |
| 6728878 |
Deferred billing, broadcast, electronic document distribution system and method |
| Apr-27-2004 |
An electronic document delivery system and method in which a broadcast center periodically sends a "catalog" of available documents to a receiving computer, thereby allowing a user to browse through the... |
| 6728378 |
Secret key messaging |
| Apr-27-2004 |
The invention provides computer-enabled methods and systems for the secure transmission and platform-independent receipt and decryption of encrypted messages. According to the invention messages are encrypted... |
| 6697490 |
Automatic resynchronization of crypto-sync information |
| Feb-24-2004 |
An apparatus and method for transmitting and receiving cryptographic information which provide a mechanism for resynchronization between a transmitter and receiver of the cryptographic information. A cryptographic... |
| 6691226 |
Computer system with disk drive having private key validation means for enabling features |
| Feb-10-2004 |
A computer system having a host computer is connected to a disk drive for providing a key to enable a feature controlled by the disk drive. The disk drive validates the key using private validation means... |
| 6690796 |
Rolling code security system |
| Feb-10-2004 |
A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted... |
| 6671377 |
System and method for downloading network information to mobile stations for location calculation |
| Dec-30-2003 |
A telecommunications system and method is disclosed for downloading encrypted network information, such as Base Transceiver Station (BTS) coordinates, in a point-to-point manner between the network and... |
| 6661896 |
Computer network security system and method |
| Dec-9-2003 |
A method and system for maintaining computer network security allows for changeable encryption keys used by each individual work station to be looked up by a server. The server will have numerous logical... |
| 6654885 |
Method for authorization checking and configuration for carrying out the method |
| Nov-25-2003 |
The system checks whether authorization exists for at least two data processing devices to exchange data with one another. In the preferred embodiment, both data processing devices are of identical design.... |
| 6640303 |
System and method for encryption using transparent keys |
| Oct-28-2003 |
A method, system, and computer program product are provided for encrypting and decrypting information, such as electronic mail. Each party has a secret, unique, randomly assigned value y. A sender and... |
| 6615353 |
User authentication method and user authentication system |
| Sep-2-2003 |
A user authentication method and system which maintains reliable security using a low cost storage medium in place of cryptocards, wherein the system comprises control equipment and an operating section... |
| 6608901 |
Cryptographic key split combiner |
| Aug-19-2003 |
A cryptographic key split combiner, which includes a number of key split generators for generating cryptographic key splits and a key split randomizer for randomizing the cryptographic key splits to produce... |
| 6606386 |
Cryptographic key split combiner |
| Aug-12-2003 |
A cryptographic key split combiner, which includes a number of key split generators for generating cryptographic key splits and a key split randomizer for randomizing the cryptographic key splits to produce... |
| 6594362 |
Radio data transmission apparatus |
| Jul-15-2003 |
A ciphered message contained in a radio signal is displayed as it is if a code number contained in a received radio signal does not coincide with a preliminarily registered code number. On the other hand,... |
| 6587562 |
Synchronous stream cipher |
| Jul-1-2003 |
A synchronous data-stream generator, suitable for use as a synchronous stream cipher providing copy right protection for audio/video data, generates a stream of output data items in synchronisation with... |
