| 7039185 |
Method and system for securing a printhead in a closed system metering device |
| May-2-2006 |
A closed system meter that secures the link between the accounting device and printer utilizing a Linear Feedback Shift Register (LFSR) based stream encryption is provided. The accounting device includes... |
| 7036017 |
Microprocessor configuration with encryption |
| Apr-25-2006 |
A microprocessor configuration includes a data bus for data transfer between functional units. On the bus side, each unit contains an encryption/decryption unit that is controlled synchronously by a random... |
| 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... |
| 7024560 |
Power-residue calculating unit using Montgomery algorithm |
| Apr-4-2006 |
A power-residue calculating circuit includes: an I/F (interface) circuit with respect to an external bus; an e register holding a key e; a Y register holding a multiplier Y for Montgomery conversion; an... |
| 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.... |
| 6996712 |
Data authentication system employing encrypted integrity blocks |
| Feb-7-2006 |
A data authentication system that at the sender produces for a plurality of data packets a plurality of "integrity checks" by selecting an integrity function from a family or set of integrity functions,... |
| 6996544 |
Multiple party content distribution system and method with rights management features |
| Feb-7-2006 |
A multiple party system for distributing content. In one embodiment, four parties are involved in the system: a consumer, a service provider, an authenticator, and a content provider. The distribution... |
| 6996248 |
Apparatus and method for watermarking a digital image |
| Feb-7-2006 |
An apparatus for adding a watermark to a moving image as it is displayed comprises a watermark generator in which data representing a watermark is generated. The watermark contains at least one of location... |
| 6990471 |
Method and apparatus for secure electronic commerce |
| Jan-24-2006 |
One embodiment of the present invention provides a system that facilitates secure electronic commerce. The system operates by first providing a consumer with a file of security data relating to an account... |
| 6970563 |
System for fast scrambling and descrambling of data |
| Nov-29-2005 |
A method for parallel scrambling of a sequence of serially transmitted digital bits comprises an initializing scrambling step and subsequent scrambling step. The initializing scrambling step comprises... |
| 6961426 |
Cascaded stream cipher |
| Nov-1-2005 |
A pseudo-random number generating circuit and method, comprising: a plurality of pseudo-random number generator (PRNG) units combined in a cascade structure of several layers to produce a pseudo-random... |
| 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... |
| 6956890 |
Process and device for the generation of codes, for example channeling codes for CDMA applications |
| Oct-18-2005 |
The device can be used for generating, in the framework of a CDMA communications terminal, both Walsh-Hadamard channeling codes and OVSF channeling codes. The device comprises a code generator preferably... |
| 6950518 |
Data encryption system |
| Sep-27-2005 |
A system (100) and method (400, 500) for data encryption and decryption are disclosed. The encryption system is operable at encryption rates in excess of 10 Mbps and is expandable to over 200... |
| 6944297 |
Method and apparatus for reproducing ciphered data |
| Sep-13-2005 |
A data reproducing apparatus and method is provided for reproducing data that was ciphered during recording in one or more of sector forming, header appending, error correction coding, modulation, and... |
| 6944295 |
Data-processing device and method of operating said device |
| Sep-13-2005 |
The invention relates to a method of generating a random-number sequence, and to a random-number generator, particularly for a chip card or a smart card. The random-number generator comprises: |
| 6941461 |
System and method of uniquely authenticating each replication of a group of soft-copy documents |
| Sep-6-2005 |
A system and method for unique authentication of each replication of a plurality of soft-copy documents, forming a group. One soft-copy document, out of the group, becomes a carrier for an authentication... |
| 6938019 |
Method and apparatus for making secure electronic payments |
| Aug-30-2005 |
In accordance with the present invention, consumers and merchants use computing devices connected to a network, such as the Internet, through wired and wireless means, wherein the consumer connects to... |
| 6909783 |
Alphabet soup cryptography |
| Jun-21-2005 |
Computer methods, systems, and devices, providing automatic permutations of a programmed modified random symbol square matrix producing one time pad messages are disclosed enabling messages to be encrypted... |
| 6889325 |
Transaction method and system for data networks, like internet |
| May-3-2005 |
A method and a system for performing a transaction between at least one first party and at least one second party are disclosed. A data network connects data input/output terminals of the parties. In the... |
| 6888943 |
Multimedia adaptive scrambling system (MASS) |
| May-3-2005 |
A system (300, 500) for scrambling digital samples (115, 200, 250, 260, 270) of multimedia data, including audio and video data samples, such that the content of the samples is degraded but still recognizable,... |
| 6885747 |
Cryptographic key split combiner |
| Apr-26-2005 |
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... |
| 6853731 |
Digital video recorder employing a unique ID to interlock with encrypted video programs stored on a storage device |
| Feb-8-2005 |
The present invention may be regarded as a digital video recorder (DVR) comprising a storage device for storing an encrypted video program, a unique ID for interlocking the encrypted video program with... |
| 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... |
| 6845159 |
Processing method and apparatus for converting information from a first format into a second format |
| Jan-18-2005 |
A data processing method and apparatus are proposed for used in the encryption, decryption and authentication of messages. A memory for storing input information, a set of operations and a processor for... |
| 6839847 |
Information processing equipment and IC card |
| Jan-4-2005 |
An IC card having a storage memory including a program storage unit for storing a program and a data storage unit for storing data and a central processing unit for executing a predetermined process in... |
| 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... |
| 6813716 |
Secure calling card and authentication process |
| Nov-2-2004 |
Service is authorized through a process that employs a randomly sequenced table lookup that is based on predetermined information that was randomly assigned. In one embodiment, a calling card is issued... |
| 6792566 |
Method and apparatus of pre-loading a seed for a test code of a physical layer device |
| Sep-14-2004 |
A method and an apparatus of loading a pre-load seed for a test code of a physical layer device (PHY). For a physical layer device including a scrambler and a Non-Return-to-Zero/Non-Return-to-Zero-Inverted... |
| 6760442 |
Method and apparatus for adjusting the quality of digital media |
| Jul-6-2004 |
A method and system are disclosed for adjusting the resolution or performance of digital media in a reversible manner. A mask component having a length of a predetermined number of bits is extracted from... |
| 6754349 |
Cryptographic key, or other secret material, recovery |
| Jun-22-2004 |
Secret material, such as a cryptographic key, that is needed for operation of a computer system (4a), can be stored under password protection on a storage medium for insertion into the computer system... |
| 6745231 |
System for securing electronic mail |
| Jun-1-2004 |
Encrypted e-mails that reside in e-mail service providers servers or a gateway machines can be compromised and deciphered with advances in technology for breaking encryption codes. Significant security... |
| 6744747 |
Method & apparatus for W-CDMA handoff searching |
| Jun-1-2004 |
Techniques for improved handoff searching in asynchronous systems, such as W-CDMA, are disclosed. In one aspect, a two-step search procedure is used when a list of neighbor codes is known. In the first... |
| 6725374 |
Method for the execution of an encryption program for the encryption of data in a microprocessor-based portable data carrier |
| Apr-20-2004 |
A method for the execution of an encryption program for the encryption of data in a microprocessor-based portable data carrier is described, with the encryption program comprising several parallelisationable... |
| 6721423 |
Lost cost countermeasures against compromising electromagnetic computer emanations |
| Apr-13-2004 |
A set of methods is specified whereby software reduces compromising electromagnetic emanations of computers that could otherwise allow eavesdroppers to reconstruct sensitive processed data using periodic... |
| 6697871 |
System and method for efficient encoding and decoding of protocol messages |
| Feb-24-2004 |
A system and method for the efficient encoding and decoding of protocol messages is described. In one embodiment, an offset from a beginning of a memory buffer is calculated based upon a maximum size of... |
| 6643775 |
Use of code obfuscation to inhibit generation of non-use-restricted versions of copy protected software applications |
| Nov-4-2003 |
Three methods are disclosed for protecting software applications from unauthorized distribution and use (piracy). The first method involves using values generated by a conventional ESD (Electronic Security... |
| 6577732 |
Hierarchical encryption technique for dense wavelength division multiplexed systems using a wavelength bus architecture |
| Jun-10-2003 |
Transmission-based data security is provided in dense wavelength division multiplexing systems using a transmission scheme that incorporates hierarchical scrambling techniques with a unique multiplexing... |
| 6570990 |
Method of protecting high definition video signal |
| May-27-2003 |
A system controls reproduction of a video transmission between a transmitter and a receiver. The system includes an encryptor with an offset generator adapted to receive the encrypted frame key and to... |
| 6535687 |
Method and system for deterring electronic video piracy through image rearrangement |
| Mar-18-2003 |
A system for deterring unauthorized reproduction of a video presentation including a plurality of images to be displayed and method for operating the system. The system includes an encoder for encoding... |
| 6504931 |
Method and apparatus for encrypting data |
| Jan-7-2003 |
In the process of compressing and encrypting data, without an increase of processing time, a cipher capability is secured against the latest cryptanalysis such as differential and linear cryptanalyses.... |
| 6496929 |
Generating RSA moduli including a predetermined portion |
| Dec-17-2002 |
Techniques are provided for generation of an RSA modulus having a predetermined portion. The predetermined portion may be the leading digits of the modulus, or split between the leading and trailing digits... |
| 6496583 |
Digital data transfer apparatus and method |
| Dec-17-2002 |
A converting processing block (4B/5B CONVERTER & ARB. SIGNAL CONVERTER) functions as a 4 bit/5 bit converting unit for performing 4 bit/5 bit conversion of data and as an arbitration signal converting... |
| 6487293 |
Method and apparatus for reproducing ciphered data |
| Nov-26-2002 |
A data reproducing apparatus and method is provided for reproducing data that was ciphered during recording in one or more of sector forming, header appending, error correction coding, modulation, and... |
| 6459794 |
Process for scrambling and process for descrambling digital video data and devices implementing the processes |
| Oct-1-2002 |
The invention relates to a process for scrambling video data in the MPEG2 video format as well as to a process for descrambling data scrambled according to the process of the invention. The scrambled video... |
| 6452959 |
Method of and apparatus for generating data sequences for use in communications |
| Sep-17-2002 |
A method of generating one or more pseudorandom noise (PN) sequences for use in spread spectrum communications includes the steps of providing data at an input of memory which stores bits associated with... |
| 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... |
| 6438693 |
Modular broadcast receiver system and memo |
| Aug-20-2002 |
The construction of a receiving apparatus for receiving a broadcast from a plurality of broadcasting providers is simplified. In a receiving apparatus for receiving a broadcast from a plurality of broadcasting... |
| 6424953 |
Encrypting secrets in a file for an electronic micro-commerce system |
| Jul-23-2002 |
An electronic commerce system and method includes a broker computer system having a database of scrips, a vendor computer, and a consumer computer system having a wallet protected by a pass phrase. To... |
| 6421780 |
System for creating high and low speed non-algorithmic random numbers for encryption/decryption |
| Jul-16-2002 |
A method and structure for generating and publishing random number fields for both low speed and high-speed encryption. The numbers which, are derived from natural non-algorithmic sources, allow the usage... |
