Cryptography inventions 10/06

20060239450 - In stream data encryption / decryption and error correction method: The throughput of the memory system is improved where error correction of data in a data stream is cryptographically processed with minimal involvement of any controller. To perform error correction when data from the memory cells are read, the bit errors in the data in the data stream passing between...

20060239449 - Memory system with in stream data encryption / decryption and error correction: The throughput of the memory system is improved where error correction of data in a data stream is cryptographically processed with minimal involvement of any controller. To perform error correction when data from the memory cells are read, the bit errors in the data in the data stream passing between...

20060239452 - Apparatus and method for providing security service: An apparatus for providing a security service includes a key generation unit which generates a pair of keys including a first temporary public key and a first temporary private key for a network device that will be connected with a network form the outside, a temporary access control list generation...

20060239451 - Rights management system for streamed multimedia content: A sequence of content keys are shared between a receiver of pieces of digital content and a computing device upon which the content is to be rendered. The receiver encrypts each piece of content according to a corresponding content key in the sequence and forwards the encrypted content to the...

20060239453 - Data encryption system for internet communication: Two versions of a variable word length encryption method are discussed. The methods are adapted for providing the means for long-term confidential transmission of printed characters, pictures, and voice dialogues over telephone lines or the Internet....

20060239454 - Image forming method and an apparatus capable of adjusting brightness of text information and image information of printing data: An image forming method and an apparatus capable of adjusting brightness of text information and image information of printing data. In the image forming method, printing data is divided into the text information and the image information, brightness values of the text information and the image information are adjusted, and...

20060239456 - Copy protection method, cablecard module, and video system of digital cable broadcasting channel according to predetermined digital cable broadcasting standard: A copy protection method of a digital cable broadcasting channel according to a predetermined digital cable broadcasting standard is provided which comprises changing a channel to a first digital cable broadcasting channel and exchanging a copy protection value of the digital cable broadcasting standard between a CableCARD module and a...

20060239455 - Data transmission system, data transmission method, and device: An apparatus 1 on the sending side sends a first signal S1 containing encrypted data that was encrypted using conversion constants Y, Zy′, and a conversion constant X to an apparatus 1 on the receiving side; the apparatus 1 on the sending side sends a second signal S2 containing encrypted...

20060239457 - Selection of 1-out-of-n scrambled code blocks: Apparatus and method to determine selection of a scrambled data channel before receipt of an entire data block. An initial portion of a block of data received in one of a plurality of scrambled data channels is decoded, then re-encoded. A value is computed related to the number of mis-matched...

20060239458 - Communications system with minimum error cryptographic resynchronization: A synchronized communications system permits resynchronization in late-entry or fade-recovery conditions. A plurality of communications devices are operative for communicating in a synchronized, encrypted communications channel between each other. At least one of the communications devices is operative for continuously transmitting a resynchronization header that includes a start-of-message field that...

20060239459 - Parameter generation apparatus, encryption system, decryption system, encryption apparatus, decryption apparatus, encryption method, decryption method, and program thereof: A parameter generation apparatus for generating parameters causing no decryption error for an NTRU cryptosystem so that an encrypted communication can be carried out between an encryption apparatus and a decryption apparatus in a secure and reliable manner, is comprised of: a provisional parameter generation unit operable to generate a...

20060239460 - Qkd system detector autocalibration based on bit-error rate: In a quantum key distribution (QKD) system, a method of autocalibrating the gating of a single-photon detector (SPD) unit is disclosed. The method includes exchanging photon signals (P1, P2) to establish a bit-error rate (BER). The method also includes performing a detector gate signal timing scan (314) that varies the...

20060239461 - Method and system for creating random cryptographic keys in hardware: A method and system for creating random cryptographic keys in hardware is described. One or more bits are generated via one or more random bit circuits. Each random bit circuit includes a sensing device coupled to a first device and a second device to compare the first device against the...

20060239462 - Record carrier comprising encryption indication information: The present invention relates to a record carrier (10) for storing user data in sectors (S) and management information (n) associated with said sectors. In order to provide a simple, low-cost, flexible and secure copy protection of the user data when being transmitted over a communication bus (6) of a...

20060239463 - Qkd system laser autocalibration based on bit-error rate: A method of autocalibrating the timing of the laser (202) in a quantum key distribution (QKD) system (200) is disclosed. Laser (202) generates photon signals (204) in response to a laser gating signal (S0) from a controller (248). The method includes first performing a laser gate scan (304) to establish...

20060233357 - Encrypting apparatus and encrypting method: To propose an encryption device and encryption method capable of improving reliability of an encryption function. An element-specific parameter unique to a solid imaging element is created based on a uniform image signal S2 output from the solid imaging element as a result of imaging a uniform imaging target with...

20060233358 - Method and system for shipment authentication: In one embodiment of the present invention, a source point of a supply chain secures shipment of an object by devising an encryption key and encrypting a message using the encryption key to produce an encrypted message. A portion or portions of the encryption key and the encrypted message are...

20060233359 - Apparatus, method and system for providing a broadcasting service in a digital broadcasting system with a single frequency network: An apparatus, method, and system for providing a broadcasting service in a Digital Multimedia Broadcasting (DMB) system with a Single Frequency Network (SFN). Networks of shadow and non-shadow regions can be distinguished in the digital broadcasting system. A conditional access system can be used in the shadow region. A terminal...

20060233360 - Device and method for transmitting data in an encrypted manner: A device according to the present invention is configured for transmitting data between two semiconductor chips of a data processor in an encrypted manner, wherein a first semiconductor chip is connected to a second semiconductor chip. The device includes a non-volatile memory element in each of the two semiconductor chips,...

20060233361 - Device, method, and program for encrypton and decryption and recording medium: A part of data is extracted as an IV from cipher text at the previous time. An EX-OR gate ORes the IV and a common key and outputs a cipher key. Data to be transmitted are encrypted with the cipher key according to stream cipher. When ciphered data 15a are...

20060233362 - Early detection system and method for encrypted signals within packet networks: A system and method for providing early detection of encrypted signals within a secure connection for voice over Internet protocol (VoIP). The system and method includes a non-complex, in-band, and early encryption detector within the voice path. A transmitter sends out a known pattern. Based upon the received pattern, the...

20060233363 - Method and apparatus for composable block re-encryption of publicly distributed content: Secure communication from one encryption domain to another using a trusted module. In one embodiment, the invention includes receiving encrypted streamed content encrypted with a first key, generating a substitution key stream based on the first key and a second key, generating a transposition key stream based on the first...

20060233364 - Fine-grained forward-secure signature scheme: The presented methods form the basis of a forward-secure signature scheme that is provably secure. Moreover, the presented methods form also the basis of a fine-grained forward-secure signature scheme that is secure and efficient. The scheme allows to react immediately on hacker break-ins such that signatures from the past still...

20060233365 - Random number generator: According to one embodiment, a clock generating unit configured to generate a clock having a predetermined frequency, an input value generating unit configured to generate an input value for predetermined encryption algorithm based on a generated clock, and a calculation processing unit configured to generate random number data by executing...

20060233366 - Encryption system, encryption device and decryption device: An encryption system for surely protecting digital video data or digital audio data from illegal copying. This system has an encryption device and a decryption device. The encryption device includes: an A/D converter; a code setting unit for separately generating a frame check code on first data of each of...

20060233368 - Method for conditional access in a dmts/docsis enabled set top box environment: The DOCSIS portion of a composite subscriber device is coupled to a video device. The DOCSIS portion ranges and obtain a symmetric session key generated and encrypted using the DOCSIS portion's private key, and broadcast from a central network device over a data channel. The session key is decrypted using...

20060233367 - System and methods for an overlay disk and cache using portable flash memory: A system is provided for reading and writing sectors which may be realized as either a disk device to the local operating system, or as a virtual disk device to a virtual machine. A user's computing environment is stored in the network in the form of a disk image, which...

20060233369 - A partial dual encrypted stream utilizing program map tables: The present invention is suitable for use in a partial dual encrypted system. The present invention allows for two different decryption devices (e.g., an incumbent, or first, set-top and an overlay, or second, set-top) to be located in a single system having an incumbent encryption scheme and a second encryption...

20060233370 - System and method for encryption processing in a mobile communication system: An encryption processing system and method are provided in a mobile communication system having an AT, an AN for sending packet data to the AT on a radio channel, a PCF for controlling the AN, and a PDSN for sending packet data to the AN through the PCF. The AT...

20060233371 - Roaming encryption key rekeying apparatus and method: Roaming encryption key rekeying apparatus and method comprising a first system key management facility that communicates to a communication unit roaming information is disclosed. The roaming information is encrypted using a first encryption scheme that is decipherable by the communication unit. Further, the first system key management facility communicates to...

20060233372 - System and method for enforcing network cluster proximity requirements using a proxy: A system, method and computer program for enforcing network cluster proximity requirements using a proxy is useful in preventing unauthorized devices from receiving encrypted broadcast content intended for only authorized users within a network cluster. The current art allows users to remotely establish trust via a cryptographic handshake. This results...

20060233373 - Dmb terminal for enabling simultaneous dmb viewing and phone call and method therefor: A DMB terminal for enabling simultaneous DMB viewing and call and a method therefor are provided. The DMB terminal has a switch unit for switching an image output path, an audible sound output path, and a key input path between a DMB module and a modem module. The modem module...

20060233374 - Gathering randomness in a wireless smart card reader: A device coupled to a smart card reader may request random data from a smart card inserted into the smart card reader, and the smart card reader may incorporate the random data into its randomness pool. A device having a source of random data may have a driver installed thereon...

20060233375 - Captive portal system and method for use in peer-to-peer networks: A system, method and computer program product are provided. In use, a peer-to-peer wireless network is advertised utilizing a granting node. Further, a requesting node is provided for connecting to the peer-to-peer wireless network. Thereafter, such requesting node is redirected to a portal. To this end, a software application is...

20060233376 - Exchange of key material: A communication network manages key material. A method generates and provides session keys from a security node to an access node for further propagation during handoff procedures, without requiring the security node to take part in the handoff procedures....

20060233377 - Key distribution method of mobile ad hoc network: A key distribution method is provided. The method is adapted for a network. The network comprises a plurality of nodes. In the key distribution method, a plurality of keys are provided to each node. A plurality of blocks are provided, serving as platforms. An algorithmic parameter is selected and a...

20060227965 - Locally interative encryption generating compliant ciphertext for general syntax specifications: A fast and secure syntax compliant encryption schema, “locally iterative encryption,” can produce compliant ciphertext for a general syntax specification. In one implementation, an engine partitions a data stream into blocks, and encrypts each block iteratively until syntax compliance conditions are met. A system using the schema can utilize either...

20060227966 - Data access and permute unit: According to embodiments of the invention, there is disclosed a data processing unit, a method of operating the same, computer program product and an instruction. In one embodiment according to the invention, there is provided a data processing unit for a computer processor, the data processing unit comprising a deep...

20060227967 - Data processing system and method: A data processing system includes: a stream decoder for decrypting a stream encrypted by broadcast encryption to obtain a first decrypted stream; an internal buffer for storing the first decrypted stream; and an encryption/decryption processor. The encryption/decryption processor decrypts a stream encrypted by content encryption to obtain a second decrypted...

20060227968 - Speech watermark system: A time-dependent watermark system is provided for information integrity identification and tampering detection and damaged area reconstruction for digitally recorded speech that can be used as evidence in the court of law. The present invention utilizes the speech characteristics of frame, reconstruction information and time-dependent information to generate watermark for...

20060227969 - Visual cryptography system: The present invention relates to a visual cryptography system. The system comprises a first and a second display device (1, 2), arranged for, upon being superimposed on each other, reconstructing a graphical message from two respective shares. At least one of said display devices (1, 2) comprise means for facilitating...

20060227970 - Image display system: An image control apparatus in an image display system applies scrambling only to image data which requires content protection and notifies to a display apparatus which pixel or pixels are scrambled. Alternatively, when a plurality of windows are displayed at the same time, the image control apparatus scrambles each window...

20060227971 - Secret authentication key setup in mobile ipv6: A method, a mobile node (MN) and a correspondent node (CN) exchanging a Secret Authentication Key (SKbm) within an IPv6 network. The MN has a pair of keys comprising a private key and a public key and a HoA. Upon displacement of the MN from a home portion to a...

20060227972 - Selecting a hidden network to connect a user to a wireless local area network: The present invention provides a method and an apparatus for identifying at least one of one or more hidden and visible networks associated with an access point. The method comprises detecting whether a Wi-Fi network is hidden behind a first visible network of the at least one of one or...

20060227973 - Information processing device, information recording medium, information processing method, and computer program: In an information recording medium storing many pieces of content, a configuration that allows use management on segmented content basis is provided. A plurality of content management units corresponding to title, index and other information are set by partitioning stored content in an information recording medium. Different unit keys that...

20060227974 - Encryption and decryption method: For the purpose of data encryption a reference data vector is acquired from a reference object. The reference object can be a physical object such as a passport, a biometric feature, or a rendered data object. A set of random vectors for each bit to be encoded is determined on...

20060227975 - Information processor, information processing method, and computer program: An information processor includes a data processing section that executes a processing of storing subsequently generated data, which is subsequently generated or acquired using information read from an information recording medium, onto a storage unit. The data processing section is configured to execute a processing of storing onto the storage...

20060222175 - Computation method, computing device and computer program: The computing device calculates an equivalence H0≡2m*k+1 (mod n) relating to a divisor n of 2m*k+1 (step A), computes an equivalence H≡2E(p, m, k) (mod n) of 2E(p, m, k) (mod n) from H0 by an REDC operation (step B), and performs a correction operation by H=REDC (H, G)n for...

20060222176 - Image forming apparatus, information processing method, and recording medium: An image forming apparatus including an application is disclosed. The image forming apparatus includes a determining unit that, when the application starts in the image forming apparatus, checks first information indicating a function to be used by the application against second information indicating a function supported by the image forming...

20060222177 - Information network system and information apparatus: Upon receiving an input of a request to move data to an external recording medium, a first information apparatus: transfers to record contents data after performing conversion under compression; encrypts the contents data and stores it in a concealment area of an internal recording medium; transfers to record the contents...

20060222178 - System and method for communicating encrypted data: An encrypted data communication system for communicating an encrypted stream as an encrypted data stream from a device at transmitting end to a device at receiving end to suppress the effect of an erroneous detection of a dummy code is disclosed. A device at transmitting end generates a data stream...

20060222179 - Apparatus and methods for including codes in audio signals: Apparatus and methods for including a code having at least one code frequency component in an audio signal are provided. The abilities of various frequency components in the audio signal to mask the code frequency component to human hearing are evaluated and based on these evaluations an amplitude is assigned...

20060222180 - Chip-scale transmitter for quantum cryptography: A quantum cryptographic key distribution (QKD) transmitter includes an integrated photonic circuit configured to distribute encryption key material using quantum cryptographic mechanisms. The integrated photonic circuit further includes a first photon source, an interferometer coupled to the first photon source and a phase modulator coupled to the interferometer and configured...

20060222181 - Method for transporting real-time audio and video data: A method for transporting real-time audio and video data is provided, wherein a partial encryption method merely encrypts some packets or some segments thereof in the data stream thereby improve the speed of data process and reduce the load of the processor. Especially for audio data, the malicious interceptor cannot...