Cryptography inventions 03/06

20060067525 - Unique product identification: The components of a product are identified with the aid of checksums. The checksums are in turn identified with the aid of a master checksum. Asymmetrically encrypted digital signatures are preferably used as checksums. As a result of the capability to verify the checksums it is ensured that none of...

20060067526 - Apparatus, and an associated method, for facilitating fast transition in a network system: An apparatus, system, computer-readable medium, and method to facilitate quick transition of communications of a mobile station between network stations of a radio communication system, such as a WLAN operable to a variant of an IEEE 802 operating specification, is provided. Implementations of embodiments described herein reduce the transition duration...

20060067527 - Method for making seed value used in pseudo random number generator and device thereof: A seed value making method and device for a PRNG (Pseudo Random Number Generator) are provided. The seed value making method includes the steps of: accumulating in memory units of a First Data Pool data from various external sources, analyzing the data to determine a source type, computing entropy estimations...

20060067528 - Communication device and communication method: A communication device comprises a decoding unit which encodes a content signal C by an encoding key Kc and outputs an encoded content signal Kc•C, a key encoding unit which encodes the encoding key Kc by use of a static device key k and a dynamic device key K1 stored...

20060067529 - Content management method and recording medium: Content data is moved from a first recording medium to a second recording medium, the first recording medium recording an encrypted content (key is first key), a first encrypted key (key is a fourth key which is generated from a second key and a third key), and a second encrypted...

20060067530 - Recording/playback system for medium compliant to copy control: By introducing a new copy control system into video signals subjected to picture quality restriction satisfactory only in small-sized PMP displays, a new business model in which copyrighters, consumers and makers can have mutual prosperity is created. “A new copy control rule of prohibiting a video signal output with a...

20060067531 - Data transmission method and apparatus using multiple scrambling codes: A packet including data and a cyclic redundancy check code is encoded by using a selectable one of N scrambling codes (N>1). The encoded packet is transmitted and received, then decoded N times by using the N scrambling codes. The cyclic redundancy check code is used to decide which one...

20060067532 - Communication unit and communication method: A communication unit of the invention has a ciphering section which ciphers a content signal with a cipher key and outputs a ciphered content signal, a key ciphering section which ciphers the cipher key with the static device key and the dynamic device key preliminarily stored and outputs a ciphered...

20060067533 - Secure communication system and method using shared random source for key changing: Apparatus for use by a first party for key management for secure communication with a second party, said key management being to provide at each party, simultaneously remotely, identical keys for said secure communication without transferring said keys over any communication link, the apparatus comprising: a datastream extractor, for obtaining...

20060056618 - Enabling user control over automated provisioning environment: Enabling automated provisioning on a data processing network includes providing the network with access to an automated provisioning controller. The controller enables a user to specify resource allocation priorities and uses the user-specified priorities, in conjunction with a resource stabilization policy, to resolve conflicting resource requests. The resource allocation priorities...

20060056623 - Block encryption method and schemes for data confidentiality and integrity protection: A block encryption method and schemes (modes of operation) that provide both data confidentiality and integrity with a single cryptographic primitive and a single processing pass over the input plaintext string by using a non-cryptographic Manipulation Detection Code function for secure data communication over insecure channels and for secure data...

20060056619 - Method for universal calculation applied to points of an elliptic curve: A method for universal calculation on the points of an elliptic curve defined by a quartic equation uses identical programmed calculating devices for operating an addition of points, a doubling of points and an addition of a neutral point. The calculating device is a central unit associated with a memory....

20060056620 - Processes, circuits, devices, and systems for encryption and decryption and other purposes, and processes of making: A wireless communications device (110) has a digital section (800) and a radio frequency section (840). The digital section (800) does setup and execution on a set of data in at least first and second threads concurrently in a series of overlapping iterations by dividing the set of data into...

20060056622 - Protection of a des algorithm: A method for protecting the execution of an algorithmic calculation taking into account at least one valid piece of data and at least one secret key by an integrated circuit, and performing several iterations of an encryption calculation, including executing the algorithm with the valid data between several executions of...

20060056621 - Provisional signature schemes: A method and apparatus for implementing portions of a provisional signature scheme are disclosed. In one embodiment, the method comprises creating a provisional signature by performing an operation on a message and completing the provisional signature to create a final signature on the message. Such a scheme may be used...

20060056625 - Encryption method, encryption apparatus, data storage distribution apparatus and data delivery system: Data to be encrypted is effectively encrypted by a data delivery system for encrypting the data to be encrypted with a transmitting apparatus and decrypting a cipher thereof with a receiving apparatus. In a configuration for encrypting and decrypting the data to be encrypted by using a random number sequence...

20060056624 - Transmitter device, transmitting method, receiver device, receiving method, communication system, and program storage medium: A memory stores a hash value of content management data. When an IEEE1394 interface authenticates a personal computer connected thereto via a network, the IEEE1394 transmits content management data to the personal computer while receiving a hash data of the content management data from the personal computer. The IEEE1394 interface...

20060056626 - Method and system for selectively masking the display of data field values: A method and system for selectively masking the display of data field values provides improved security and flexibility in computer data entry screens and dedicated terminals. A user input is received that selects a masked state of one or more data entry fields. When data is entered in a field,...

20060056627 - Tunneling information in compressed audio and/or video bit streams: A method for conveying private or enhancement information in a compressed bit stream comprising the steps of (A) generating a compressed bit stream in response to a first data stream and a plurality of encoding choices and (B) controlling the encoding choices in response to a second data stream comprising...

20060056628 - Methods, apparatus and computer programs for processing alerts and auditing in a publish/subscribe system: A message broker receives a published message from a publisher program. Responsive to identification of one or more subscriber programs subscribing to messages of the type of the received message, the broker forwards the received message to the one or more subscriber programs. Matcher components compares the received message with...

20060056629 - Asynchronous communication system: A data storage system, and associated asynchronous communication system and method are described. The data storage system includes data storage means (46) for storing data and an asynchronous transmitter/receiver (45) arranged to communicate over an IEEE 1394 network (30). The data storage means (46) is arranged to accept inputs and...

20060056630 - Method to support secure network booting using quantum cryptography and quantum key distribution: A method and system to support secure booting and configuration. The mechanism employs an optical link comprising a quantum channel that is used to send data encoded as quantum bits (qubits) via respective photons. Qubits encoded using a first random basis at the client and are sent to the boot...

20060056631 - Tests of quantum information: Quantum testing can compare unknown photon states in a manner suitable for a validation check of a quantum digital signature, testing of the operation of a quantum gate, or detecting of entanglement. The effect of the QSC system can be used to entangle input photon states. QSC system can include...

20060056632 - Data transmission method between a broadcasting center and a multimedia unit: The aim of this invention is to propose a flexible solution to the risk represented by access to a temporary memory of a specialized decryption/decompression circuit for a Pay-TV decoder. This aim is achieved by a data transmission method between a diffusion centre and a multimedia unit, the latter comprising...

20060056634 - Apparatus, system and method for setting security information on wireless network: An apparatus, a system and a method for setting security information on a wireless network, wherein the security information of a wireless networking apparatus is set by means of a portable device which can be used conveniently by a user, to thereby enhance the security over wireless communications. An apparatus...

20060056635 - Communication system and method of call group management therefor: A communication system comprises a first plurality of remote stations (107, 109, 111) belonging to a first call group (119) having an associated first encryption key and a first encryption mode. A second plurality of remote stations (113, 115) belongs to a second call group (121) having an associated second...

20060056633 - Real-time decryption system and method: A real-time decryption system and method utilizing Content Addressable Memory (CAM) for synchronously comparing network addresses in wireless communications. First, a network address table and a decryption key table are provided, wherein the decryption key table comprises a plurality of decryption keys, and the network address table comprises a plurality...

20060056636 - Transmit power control for wireless security: The present invention provides a method for establishing a secure channel between wireless devices. The method involves reducing the transmit power of the devices in conjunction with placing the devices in close proximity to one another. By reducing the transmit power, wireless communications between the devices cannot be detected by...

20060056637 - Method and apparatus for encrypting transmissions in a communication system: Method and apparatus for encrypting transmission traffic at separate protocol layers L1, L2, and L3 so that separate encryption elements can be assigned to separate types of transmission traffic, which allows the implementation of different levels of encryption according to service requirements. Encryption elements use variable value inputs, called crypto-syncs,...

20060050869 - Method and apparatus for managing secure collaborative transactions: Different levels of security are provided in a security system so that users can decide the security level of their own communications. Users can choose a low level of security and maintain the security overhead as low as possible. Alternatively, they can choose higher levels of security with attendant increases...

20060050868 - Protected cryptographic calculation: In a method for protected execution of a cryptographic calculation in which a key (12) with at least two key parameters (p, q, pinv, sp, dp, sq, dq) is drawn on, an integrity check (30, 34, 40, 54) of the key (12) is performed, in order to prevent a cryptographic...

20060050870 - Information-centric security: A system for encrypting a data encryption key includes a key encryption key generator configured to receive a public portion of a label, the label including an asymmetric key pair of the public portion and a private portion, the key encryption key generator being further configured to process the public...

20060050872 - Block cipher apparatus using auxiliary transformation: It is desired to share one circuit by an encryption unit 200 and a decryption unit 500. A normal data transformation unit (FL) 251 and an inverse data transformation unit (FL−1) 273 are located at point symmetry on a non-linear data transformation unit 220, and a normal data transformation unit...

20060050873 - Block cipher apparatus using auxiliary transformation: It is desired to share one circuit by an encryption unit 200 and a decryption unit 500. A normal data transformation unit (FL) 251 and an inverse data transformation unit (FL−1) 273 are located at point symmetry on a non-linear data transformation unit 220, and a normal data transformation unit...

20060050874 - Block cipher apparatus using auxiliary transformation: It is desired to share one circuit by an encryption unit 200 and a decryption unit 500. A normal data transformation unit (FL) 251 and an inverse data transformation unit ((FL−1)) 273 are located at point symmetry on a non-linear data transformation unit 220, and a normal data transformation unit...

20060050871 - Method and apparatus for securing data stored within a non-volatile memory: A method for securing data of a non-volatile memory device, comprising: providing the non-volatile memory device with a secured chip, for securely storing a secret for ciphering/deciphering the data; providing the non-volatile memory device with a ciphering/deciphering logic, for ciphering/deciphering the data with a secret; storing a secret for ciphering/deciphering...

20060050875 - Apparatus and method for recognizing a failure of a cryptographic unit: An apparatus for recognizing a failure in a cryptographic unit, wherein the cryptographic unit includes a determinator for determining an input control signal and an output control signal, with the determinator being formed to determine the input control signal on the basis of an encryption of an input control signal...

20060050876 - Integrated circuit with coded security signal, security process, corresponding security device and signal coded using a dynamic key: An integrated circuit is provided, which comprises at least one security module, controlled by at least one security signal, the circuit being made at least partially inoperable if the security module receives at least one of the said security signal(s) with a predetermined value. Such a circuit comprises means for...

20060050877 - Information processing apparatus and method, program, and recording medium: An information processing apparatus and method, program, and recording medium are provided. The information processing apparatus for communicating with another information processing apparatus by wire or wireless, the apparatus includes a random number generating section generating a random number; a first authentication data generating section generating first authentication data regarding...

20060050878 - Method to generate a pseudo random sequence of multi carrier data symbols, and related transmitter and receiver: To generate a pseudo-random sequence of multi-carrier data symbols, a pseudo-random bit sequence is produced by repetitively generating a pseudo-random sequence of L bits, L being a first integer value. To create a multi-carrier data symbol, N bits are used, N being a second integer value. The pseudo-random bit sequence...

20060050879 - Method and apparatus for encrypted print processing: According to a print controller of this embodiment, when a part of print data is specified to be encrypted, a client 102 determines functions supported by a printer 104. If the printer 104 is capable of handling partial encryption, the client 102 encrypts the specified portion, specifies the portion by...

20060050880 - Modifying bitstreams: The bitstream includes digital codes representing an information signal. At least one digital code is selected. The code occupies a part of the bitstream which is to contain at least one watermark code which represents a watermark perceptible in the information signal. The selected digital code(s) are removed from the...

20060050881 - Encoding documents using pixel classification-based preprocessing and jpeg encoding: A method for JPEG encoding an image that includes preprocessing steps performed prior to a JPEG compression step. The preprocessing steps include transforming block image data, using a variable quantization table selected for each block according to the classification of pixels in that block to produce quantized image data, and...

20060050882 - Mute circuit: The invention is to provide a mute circuit capable of surely muting various noises generated in a signal output line with a simple circuit configuration and a signal output device provided with the same. A resistor and a capacitor are serially connected to each other on the signal output line...

20060050883 - System and method for bit stream compatible local link encryption: In accordance with the teachings of the present invention, a system and method for bit stream compatible local link encryption are provided. In particular embodiments of the present invention, the method includes generating a random number stream using an active line count of a frame of video as an input...

20060050884 - Hardened automatic synchronisation scheme for atm cells: A method of preserving and/or reacquiring synchronisation of ATM cells (10) in an ATM cell transmission system, the ATM cells each including a header (12) and payload (11), the method including the steps of encoding the header and payload and interleaving them along with synchronisation data within a transmission frame....

20060050885 - Method for performing cryptographic functions in a computer application, and application adapted to the implementation of said method: A computer application is provided with a cryptographic toolbox with having a modular architecture. The toolbox has a module for manipulating data formats used in the performance of cryptographic functions, a module for executing algorithms involved in cryptographic operations, a module for accessing cryptographic resources, and a functional module supervising...

20060050886 - Method and system for generating a common secret key: A method for generating a common secret data item between a first user facility and a second user facility does so through by each facility executing mutually symmetric operations on respective complementary data items that are based on respectively unique quantities and that are at least in part secret. An...

20060050887 - Method and system for extending advanced encryption standard (aes) operations for enhanced security: In a wireless communication system, a method and system for extending Advanced Encryption Standard (AES) operations for enhanced security are provided. In an AES encryption operation, an initial state may be modified by XORing with an initial modifier before a first processing round and a final state may be modified...

20060050888 - System and method for device identity check: The method of the invention for checking the identity of devices is implemented in a device management system in a mobile telecommunication network. The system comprises devices to be managed, a server side device management application, a client side device management application, a database, and an interface between said device...

20060050889 - Decrypting block encrypted data: Decrypting block encrypted data includes: parsing encrypted input data and dividing the parsed data into a ciphertext and a first plaintext defining a decryption policy to be applied to the ciphertext; selecting a decryption policy to preferentially decrypt blocks of the ciphertext from among at least one decryption policy on...

20060045262 - Reliable elliptic curve cryptography computation: A method for reliable computation of point additions and point multiplications in an elliptic curve cryptography (ECC) system. Two asymmetric operations are performed: one of the operations is of slightly higher complexity than a conventional ECC operation, and the other operation is of much lower complexity than the first operation....

20060045263 - Method and apparatus for efficient generation of modulo inverse for public key cryptosystems: A method, an apparatus, and a computer program are provided for efficiently determining an inverse multiplicative modulo. In many public-key cryptographic algorithms, an inverse modulo is usually calculated in key generation. However, because many Reduced Instruction Set Computers (RISCs) do not have the hardware support for division, good results are...

20060045265 - Block cipher apparatus using auxiliary transformation: It is desired to share one circuit by an encryption unit 200 and a decryption unit 500. A normal data transformation unit (FL) 251 and an inverse data transformation unit (FL−1) 273 are located at point symmetry on a non-linear data transformation unit 220, and a normal data transformation unit...

20060045264 - Prevention of side channel attacks against block cipher implementations and other cryptographic systems: Methods and apparatuses are disclosed for improving DES and other cryptographic protocols against external monitoring attacks by reducing the amount (and signal-to-noise ratio) of useful information leaked during processing. An improved DES implementation of the invention instead uses two 56-bit keys (K1 and K2) and two 64-bit plaintext messages (M1...

20060045266 - Copy protection for video signal using narrowed horizontal synchronization signals and amplitude modulation: Enhancements to a video anticopying process that causes an abnormally low amplitude video signal to be recorded on a illegal copy. The enhancement in one version include a negative going waveform that appears to the television receiver or videotape recorder to be a sync signal, thereby causing an early horizontal...

20060045267 - Device and process for wireless local area network association and corresponding products: The present invention concerns WLAN association device and process for associating a new station to a WLAN, via a central apparatus. The association device comprises receiving and sending means for exchanging signals between the station and central apparatus, securing means for automatically providing the central apparatus with at least one...

20060045268 - Method and system for calling line authenticated key distribution: The preferred embodiments described herein provide a method and system for calling line authenticated key distribution. In one preferred embodiment, an authentication key is provided to a calling party if the calling party is phoning from a calling line associated with an authorized user. This preferred embodiment provides a more...

20060045269 - Quantum computational systems: Apparatus and methods for performing quantum computations are disclosed. Such quantum computational systems may include quantum computers, quantum cryptography systems, quantum information processing systems, quantum storage media, and special purpose quantum simulators....

20060045270 - System and method for information protection by navigation and concealment: A system and a method for scrambling data according to a map, which is preferably user-defined, such that the sequential order in which the data must be read is determined by the map. Rather than employing a mathematical formula to scramble the data, the data is separated into a plurality...

20060045272 - Control program, communication relay apparatus control method, communication relay apparatus, and system: Connection information of an access point and authentication information of a terminal connected by a wireless LAN are set by an instruction from an access point setting terminal. A memory card in which the set information and the authentication information have been copied is connected to the terminal and the...

20060045271 - Security system for apparatuses in a wireless network: The invention relates to a security system for wireless networks, comprising a portable unit (1) with a key unit (3) for making a key record (4, 17, 104) available and being provided for short-range information transmission of the key record (4, 17, 104). At least one wireless apparatus (2) of...

20060045273 - Method and system for transmitting signaling information over a data transport network: A method for transmitting signaling information, such as cryptographic key synchronization information, over a data path of a network, the data path having an originating end and a terminating end. The method uses in-band signaling to transmit the signaling information from the originating end of the data path to the...