| 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... |
| 6560337 |
Systems, methods and computer program products for reducing effective key length of ciphers using one-way cryptographic functions and an initial key |
| May-6-2003 |
Systems, methods and computer program products reduce effective key length of a symmetric key cipher by deriving an intermediate value from an initial key, using a one-way cryptographic function. Predetermined... |
| 6549623 |
Cryptographic key split combiner |
| Apr-15-2003 |
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... |
| 6542610 |
Content protection for digital transmission systems |
| Apr-1-2003 |
A method for protecting digital content from copying and/or other misuse as it is transferred between one or more computationally constrained devices over insecure links, includes preliminarily authenticating... |
| 6542608 |
Cryptographic key split combiner |
| Apr-1-2003 |
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... |
| 6512829 |
Key distribution method and system in secure broadcast communication |
| Jan-28-2003 |
A key distribution method and system are disclosed in which a sender and receivers share a common key information for performing a secure broadcast communication. By use of a center side apparatus, a center... |
| 6507874 |
System for efficient routing and translation of data |
| Jan-14-2003 |
A recovery system is capable of recovering a core set of data from an input set of data. The input set of data is accompanied by a translator identifier and both items are received by a receiver in the... |
| 6501841 |
Method for providing security for a transmission of information through a plurality of frequency orthogonal subchannels |
| Dec-31-2002 |
One embodiment of the present invention is a method for providing security for a transmission of information in an ADSL environment using a DMT modulation technique. The order of the frequency orthogonal... |
| 6460137 |
Encryption processing system |
| Oct-1-2002 |
A random-number generator generates first and second title keys on the basis of random numbers. A first DES encryption circuit for the title encrypts input data with the first title key. Initial values... |
| 6445797 |
Method and system for performing secure electronic digital streaming |
| Sep-3-2002 |
A secure electronic digital streaming system provides absolute system security and user-defined message security for electronic digital streaming between two public entities. These digital streams can... |
| 6401207 |
Security device for vehicle |
| Jun-4-2002 |
A security device for vehicle disclosed is of a type generating a seed that is used suitably in order to generate a key by being encoded and that is decreased in regularity. Namely, the security device... |
| 6385318 |
Encrypting method, deciphering method and certifying method |
| May-7-2002 |
Predetermined information, correlated with the attribute information of an entity, is used as the secret key for encrypting in the public key cipher system or as the secret key for deciphering the enciphered... |
| 6377689 |
Key transmission system |
| Apr-23-2002 |
A RSA encryption scheme includes a modulus in which at least one set of bits is of a predetermined configuration. The configuration may be selected to replicate the identity of the recipient or other information... |
| 6373951 |
Synchronization technique and method and apparatus for transmitting and receiving coded signals |
| Apr-16-2002 |
To transmit encoded information such as for example voice messages between remote transceivers, a transmitter digitizes and encodes an audio signal and then transmits the resulting digital coded signal... |
| 6370248 |
Synchronizing autonomous chaotic systems using filters |
| Apr-9-2002 |
A system for synchronizing chaotic transmitters and receivers that is less sensitive to channel effects than other known chaotic communication methods. The system employs duplicate transmitter and receiving... |
| 6367010 |
Method for generating secure symmetric encryption and decryption |
| Apr-2-2002 |
The present invention relates to a method for generating secure symmetric encryption/decryption via the Internet. The present method provides for a more advanced and sophisticated manner of preventing... |
| 6363478 |
Security mechanisms in a web server |
| Mar-26-2002 |
A session processing module for a server is adapted to communicate across the Internet with a plurality of clients. The processing module runs within a servlet and allocates a session identifier in response... |
| 6337911 |
Deferred billing, broadcast, electronic document distribution system and method |
| Jan-8-2002 |
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... |
| 6324287 |
Pad encryption method and software |
| Nov-27-2001 |
A pad encryption software architecture includes space on a floppy for storing the pad to be used with the encryption software. The pad is XOR generated with random numbers subject to redetermined offsets.... |
| 6317831 |
Method and apparatus for establishing a secure connection over a one-way data path |
| Nov-13-2001 |
Improved techniques for facilitating secure data transfer over one-way data channels or narrowband channels are disclosed. Often, these channels are wireless channels provided by wireless data networks.... |
| 6266413 |
System and method for synchronizing one time pad encryption keys for secure communication and access control |
| Jul-24-2001 |
A method for generating an identical electronic one-time pad at a first location and a second location, the method comprising the steps of: (a) providing a first electronic device at the first location... |
| 6263316 |
Automated process for retailing to a vehicle occupant |
| Jul-17-2001 |
The invention is a method and apparatus for the automated retailing of refreshments and other basic consumer products to a vehicle occupant as the vehicle passes through a toll station having an automated... |
| 6263197 |
Transmitter/receiver for a vehicle and transmission/reception method of the transmitter/receiver for vehicles |
| Jul-17-2001 |
A memory (30) of a transmitter (12) of a transceiver (10) for a vehicle has four writing error check areas in which "Low" is written at the beginning of a writing process and "Hi" is written at the end... |
| 6249582 |
Apparatus for and method of overhead reduction in a block cipher |
| Jun-19-2001 |
An apparatus and method for reducing the overhead of a block cipher includes shortening the length of the initialization vector so that its length is less than the length of each block of information processed... |
| 6194991 |
Remote keyless entry rolling code storage method |
| Feb-27-2001 |
A remote keyless entry system stores critical data for synchronization in a plurality of memory locations at the receiver. When a transmission is received, the received data is validated using the critical... |
| 6185682 |
Authentication system |
| Feb-6-2001 |
An authentication system is disclosed that includes at least one station and a host. Each station having a memory for storing a plurality of authentication items. An authentication control element, such... |
| 6175312 |
Encoder and decoder microchips and remote control devices for secure unidirectional communication |
| Jan-16-2001 |
Encoder and decoder microchips suitable for use in secure unidirectional remote control devices. The encoder microchip includes circuits for performing and encoding function on an identification number... |
| 6166650 |
Secure self learning system |
| Dec-26-2000 |
A method and system for the remote control of devices having a secure self learn capability. The system includes an encoder and a decoder, the encoder encoding variable information including a user key... |
| 6154544 |
Rolling code security system |
| Nov-28-2000 |
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... |
| 6115472 |
Contents transmission control method with user authentication functions and recording medium with the method recorded thereon |
| Sep-5-2000 |
A user sets n=0, his mail account A and password S, then computes V.sub.0 =E(A,S), W.sub.0 =E(A,V.sub.0), V.sub.1 =E(A,A.sym.1), W.sub.1 =E(A,V.sub.1) and M.sub.0 =E(W.sub.1, V.sub.0), and initially registers... |
| 6088456 |
Data encryption technique |
| Jul-11-2000 |
A method of encrypting data is described in which a random variable (6A-6D) is generated in binary digital form. A first set of data (8A-8J) representing a plaintext message in binary digital form is combined... |
| 6067028 |
Identification signal registering method and identification signal registering apparatus |
| May-23-2000 |
An identification signal registering method of registering an identification signal used for a detecting apparatus to identify an apparatus to be detected, includes a step of transmitting a communication... |
| 6055316 |
System and method for deriving an appropriate initialization vector for secure communications |
| Apr-25-2000 |
A secure communications arrangement is disclosed including a source device and a destination device interconnected by a network. The source device generates message packets for transfer to the destination... |
| 6052466 |
Encryption of data packets using a sequence of private keys generated from a public key exchange |
| Apr-18-2000 |
A first cipher stream generated from a private key negotiated as a result of a public key exchange is partitioned to form a sequence of secondary keys. The secondary keys are then indexed. In one instance,... |
| 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... |
| 6041408 |
Key distribution method and system in secure broadcast communication |
| Mar-21-2000 |
A key distribution method and system are disclosed in which a sender and receivers share a common key information for performing a secure broadcast communication. By use of a center side apparatus, a center... |
| 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... |
| 6011847 |
Cryptographic access and labeling system |
| Jan-4-2000 |
An integrated, modular computer program system provides for the encryption and decryption of files utilizing conventional encryption algorithms and a relational key generated by the system. The computer... |
| 5978483 |
Securely encrypted remote keyless entry system |
| Nov-2-1999 |
A remote keyless entry system particularly suited for preventing access to unauthorized individuals by securely encrypting messages transmitted from a remote transmitter to a receiver. A unique encryption... |
| 5952933 |
System having advanced embedded code hopping encryption and learn mode therefor |
| Sep-14-1999 |
A system for monitoring and controlling an area comprising a controller for controlling system operational functions and responsive to at least one remote-control transmitter. The transmitter transmits... |
| 5949349 |
Code responsive radio receiver capable of operation with plural types of code transmitters |
| Sep-7-1999 |
A barrier movement system which is useful in provided barrier movement in environments where a first barrier such as a community gate is commonly controlled by a plurality of different actuators (transmitters)... |
| 5937065 |
Keyless motor vehicle entry and ignition system |
| Aug-10-1999 |
A keyless control system is disclosed which may be employed to gain entry to a motor vehicle and start an engine. When using this system, a user activates a remote control by selecting a function for the... |
| 5923758 |
Variable key press resynchronization for remote keyless entry systems |
| Jul-13-1999 |
The present invention provides, in a preferred embodiment, a method whereby resynchronization between a transmitter and receiver is activated intuitively by, and transparently to, an authorized user, including:... |
| 5920627 |
Encryption device and decryption device for information conveyed by asynchronous transfer mode cells |
| Jul-6-1999 |
An encryption device can be used to encrypt information units conveyed by cells that are broadcast from an optical broadcast node to network units by a passive optical network. Each cell conveys at least... |
| 5914667 |
Advanced embedded code hopping system having master fixed code encryption |
| Jun-22-1999 |
A system for monitoring and controlling an area comprising a controller for controlling system operational functions; at least one remote-control transmitter for transmitting system commands to the controller... |
| 5887064 |
Cryptographic equipment |
| Mar-23-1999 |
Cryptographic equipment is used with a number of user identification cards which are distributed to various authorized users, each user identification card being a non-volatile memory which can be overwritten... |
| 5881153 |
Remote keyless entry encryption algorithm |
| Mar-9-1999 |
The present invention teaches a method and system of encrypting a set of data having a test bit. The method comprises the step of generating a first and a second data string from the set of data. Once... |
| 5872519 |
Advanced embedded code hopping system |
| Feb-16-1999 |
A system for monitoring and controlling an area comprising a controller for controlling system operational functions; at least one remote-control transmitter for transmitting system commands to the controller... |
| 5862225 |
Automatic resynchronization for remote keyless entry systems |
| Jan-19-1999 |
The present invention teaches a method and system for resynchronizing a remote keyless entry receiver having received a new encrypted message transmitted by the transmitter which does not match a previous... |
| 5844990 |
Transmission-reception system |
| Dec-1-1998 |
The invention relates to a transmission-reception system, particularly a transmitter-receiver device contained in the bow of an ignition key. When a resonance circuit receives a carrier wave signal from... |
