Cryptography inventions 09/07

20070223687 - Flexible architecture for processing of large numbers and method therefor: A method of implementing large number multiplication and exponentiation is provided upon a general purpose microprocessor. These large number multiplication and exponentiation processes being common to cryptography standards such as RSA and AES that typically employ numbers with 512-bits, 1024-bits, and 2048-bits. According to the invention the method establishes the... Agent: Freedman & Associates

20070223685 - Secure system and method of providing same: A secure system, and method of providing a secure system, including a user authentication device and a secured device. The user authentication device includes memory, one or more authentication factors, access key information, a microCPU, an authentication factor input and a communication port. The secured device includes a microCPU and... Agent: Mcdermott, Will & Emery LLP

20070223688 - Architecture of an encryption circuit implementing various types of encryption algorithms simultaneously without a loss of performance: An encryption circuit for simultaneously processing various encryption algorithms, the circuit being capable of being coupled with a host system hosted by a computing machine. The circuit comprises an input/output module responsible for the data exchanges between the host system and the circuit via a dedicated bus. An encryption module... Agent: Miles & Stockbridge PC

20070223686 - Methods and apparatus for data and signal encryption and decryption by irregular subspace leaping: A data/signal encryption/scrambling and decryption system and methods for constructing said system from irregular subspace leaping. A data/signal is mounted from the first/previous subspace to the second/subsequent subspace. A non-orthogonal complement subspace of the first/previous subspace in the second/subsequent subspace is generated, and spanned by the y-vectors. An encrypting/scrambling data... Agent: Shidong Li

20070223689 - Computer architecture for a handheld electronic device with a shared human-machine interface: Mobile PDA computer system (300) includes a secure user processor (302), a non-secure user processor (306), a cryptographic engine (304), and a shared human/machine interface (HMI) (308). The secure user processor (302) can be comprised of a first trusted microprocessor and a first trusted operating system executing on the first... Agent: Sacco & Associates, Pa

20070223690 - Xor encoded document for secure message exchange: An XOR (exclusive or) encoded document is disclosed for establishing a joint secret between two parties. Encoded on the document are one or more areas of XOR messages. Each area containing an XOR message hides from view on each side of the XOR encoded document a different message on either... Agent: Patent Documentation Center

20070223691 - Information processing apparatus, information recording medium, information processing method, and computer program: A configuration in which use management for each piece of content, which is divided in units, can be performed strictly and efficiently is provided. CPS units such that content stored on an information recording medium is divided into units are set, a unit key is assigned to each CPS unit,... Agent: Bell, Boyd & Lloyd, LLP

20070223692 - Activation confirmation feedback circuits and methods: A circuit and method is provided for confirming that an activation state for a target has been changed. For example, a confirmation signal or message may be generated that a target device has transitioned from a non-operating or deactivated state to an activated state, or that a target device has... Agent: William J. Kolegraff Kestrel Wireless, Inc.

20070223693 - Compensating watermark irregularities caused by moved objects: The present invention relates to a method, device and computer program product for determining additional data to be embedded in a media signal as well as a media signal processing device having such a device for determining additional data. The device for determining additional data comprises an embedding unit (28).... Agent: Philips Intellectual Property & Standards

20070223694 - Methods, media, and systems for entitlement clearing: In accordance with the disclosed subject matter, methods, media, and systems for entitlement clearing are provided. In some embodiments, media for entitlement clearing are provided including receiving a first entitlement request from a first vendor and a second entitlement request from a second vendor, determining the status of the first... Agent: Wilmer Cutler Pickering Hale And Dorr LLP

20070223695 - Method for broadcasting digital data to a targeted set of reception terminals: particularise said access control message using a reversible function F for which the inverse function F−1 is executable only in terminals in the targeted set, and on reception, redetermine the original access control message in each terminal in the targeted set using said inverse function.... Agent: Thelen Reid Brown Raysman & Steiner LLP

20070223696 - Secure device and relay terminal: An IC card (10) includes a tamper resistant module (12) which has one or more applications (16) and a card control unit (14) for controlling an operation of the IC card (10), a secure memory area (18) which is accessible from only the tamper resistant module (12), and a contactless... Agent: Wenderoth, Lind & Ponack L.L.P.

20070223697 - Information processing system and information processing method for use therewith, information processing apparatus and information processing method for use therewith, and program: The present invention relates to an information processing system and a method for use therewith, an information processing apparatus and a method for use therewith, and a program which are capable of decrypting desired portions of encrypted data. Of packets 211 through 216 constituting a bit stream of layered-encoded image... Agent: Bell, Boyd & Lloyd, LLP

20070223698 - Quantum cryptography communication system: In a system carrying out cryptography communication using a quantum, it is aimed to correctly verify a quantum state received at the commit phase according to the quantum bit string commitment system, even if not maintaining the quantum state until the open phase but immediately observing the quantum state. According... Agent: Birch Stewart Kolasch & Birch

20070223699 - Method for identifying emerging issue from textual customer feedback: Systems, methods and software products identify emerging issues from textual customer feedback. A message stream of customer feedback is received. The message stream includes a plurality of unstructured text messages from at least one homogeneous source. A time interval is established. The volume of text messages for the time interval... Agent: Lathrop & Gage Lc

20070223700 - Chaotic signal transmitter: The invention relates to a chaotic transmitter which can precisely measure a distance between the transmitter and a receiver, thereby efficiently regulating transmission power according to the distance. The chaotic signal transmitter includes a chaotic signal generator for generating a chaotic signal and a quantizer for quantizing a transmission signal... Agent: Lowe Hauptman Berner, LLP

20070223702 - Digital certificate pool: A wireless vehicle and infrastructure system is described that allows for utilization of a quasi-anonymous common private key/digital certificate pool, such that all vehicles are authenticated to the system, but no one vehicle/user can be readily identified during their use of the system because of their use of set of... Agent: Leffert Jay & Polglaze, P.A.

20070223701 - Method and apparatus for utilizing multiple group keys for secure communications: A method and apparatus for utilizing multiple group keys for secure communications among nodes is provided herein. During operation an access point will utilize a plurality of Medium Access Controller (MAC) Addresses, one for each service provided. Each MAC address has an associated lookup table containing encryption keys. From the... Agent: Motorola, Inc.

20070223703 - Method and apparatus for providing service keys within multiple broadcast networks: An approach is provided for providing service keys in multiple broadcast networks. A message including a group of keys is generated for providing secure communication over a first broadcast network and a second broadcast network. A message is transmitted to a terminal within the first broadcast network and a terminal... Agent: Ditthavong Mori & Steiner, P.C.

20070223704 - Method and apparatus for authenticated, recoverable key distribution with no database secrets: A method and apparatus for authenticated recoverable key distribution are described. In one embodiment, an application key is provided to an integrated chip platform. In one embodiment, the integrated chip platform encrypts the application key with a Key Encryption Key, which is stored within the persistent memory on the platform,... Agent: Blakely Sokoloff Taylor & Zafman

20070223705 - Storage medium processing method, storage medium processing apparatus, and program: A SD card SDq may store plural kinds of service user keys Kus which are different per type of services. The service user key Kus is encrypted by a medium unique key Kmu and is stored in a protection area 3. The protection area 3 stores a master user key... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070223706 - Certify and split system and method for replacing cryptographic keys: A feature is provided that facilitates securely creating, and/or replacing cryptographic keys. A first key pair is created comprising first private key and first public key. A second (spare) key pair is created comprising second private key and second public key. The second key pair is associated with the first... Agent: Qualcomm Incorporated

20070217601 - Method and apparatus for elliptic curve scalar multiplication: The applicants have recognized an alternate method of performing modular reduction that admits precomputation. The precomputation is enabled by approximating the inverse of the truncator T, which does not depend on the scalar. The applicants have also recognized that the representation of a scalar in a τ-adic representation may be... Agent: Blake, Cassels & Graydon LLP

20070217602 - Method for fast quotient guess and congruencies manipulation: A processor-executed computational method especially for use in cryptographic systems quickly determines a polynomial quotient under specific conditions. For a polynomial modulus f(x), a maximum degree for a polynomial i(x) to be reduced by this method is defined as the sum of the degree of f(x) and the difference d... Agent: Schneck & Schneck

20070217603 - Decryption key reuse in encrypted digital data stream distribution systems: A data processing apparatus for a first encrypted digital datum in a digital data stream distributed in a distributed system. The apparatus includes a key extractor for obtaining a symmetric encryption key used to encrypt the first encrypted digital datum; a decryption system for creating a plaintext digital datum from... Agent: Thelen Reid Brown Raysman & Steiner LLP

20070217604 - Encrypted data recording apparatus: An encrypted data recording apparatus is disclosed. The encrypted data recording apparatus includes: analyzing means for analyzing encrypted data inputted; decrypting means for decrypting the encrypted data analyzed by the analyzing means; encrypting means for encrypting the data decrypted by the decrypting means using key information peculiar to the encrypted... Agent: Robert J. Depke Lewis T. Steadman

20070217605 - Recording medium, data recording method and apparatus, data regenerating method and apparatus, and copy control method: Data is recorded in a first part PA1 in accordance with a signal format same as that of an existing CD at the lower limit (1.5 μm) of an allowable value of a track pitch and the lower limit (1.2 m/sec) of a linear velocity. As a result, the data... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20070217606 - Digital watermark detection method and apparatus: A specific frequency component extraction unit extracts a specific frequency component signal from an input image signal. A phase controller controls the phase of the specific frequency component signal. A correlator computes the cross-correlation value of the phase-controlled specific frequency component signal and the input image signal. A watermark information... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070217607 - Repetition coded compression for encrypting highly correlated data: A method for an encryption of highly correlated data using a repetition coded compression is disclosed. The method includes the steps of receiving digital data, reshaping the digital data into a digital data matrix, encoding the repetitions of elements in the digital data matrix into a bit-plane index to form... Agent: Seed Intellectual Property Law Group PLLC

20070217608 - Data scramble/descramble technique for improving data security within semiconductor device: A data scramble method includes: preparing a seed value in a storage device provided outside of a CPU integrated within a semiconductor device; performing a key generation process to generate a scramble key from the seed value; and performing a scramble process on target data by using the key data.... Agent: Foley And Lardner LLP Suite 500

20070217609 - Portable telephone and program for sending and receiving electronic mail: A portable telephone includes a nonvolatile memory, a microcomputer and a liquid crystal panel. The nonvolatile memory stores a plurality of conversion tables employed when an encrypted electronic mail is generated or decrypted. Upon reception of an entry of key information corresponding to any one of the plurality of conversion... Agent: Leydig Voit & Mayer, Ltd

20070217610 - System and method for access authentication in a mobile wireless network: A system and method is provided for authenticating access in a mobile wireless network. The system and method comprise exchanging an extensible authentication protocol (EAP) packet with an access terminal over a high rate packet data radio link and a signaling interface through a radio access network, encapsulating the EAP... Agent: Baker Botts L.L.P.

20070217612 - Method and system of key-coding a video: A system and a method for encrypting sections of a video with a sequence of encrypt keys and generating a plurality of sequences of decrypt keys of varying perfection are provided. The sequencing of the decrypt keys of varying perfection is key-coded to watermark the decrypted video so that the... Agent: Smart & Biggar P.o. Box 2999, Station D

20070217613 - Method and apparatus for managing a key management system: A network system for key management, including a server, a key management system providing process logic for key management system management located on the server, a key management system storage providing a secure data storage for the key management system, an application using the key management system to manage an... Agent: Osha . Liang L.L.P. / Slb

20070217614 - Program update method and server: A system including a secure LSI 1 establishes a communication path to/from a server 3 (UD1), and receives a common key-encrypted program generated by encryption with a common key and transmitted from the server 3 (UD6 and UD7). The received common key-encrypted program is decrypted to generate a raw program,... Agent: Mcdermott Will & Emery LLP

20070217611 - Techniques for managing keys using a key server in a network segment: The election of a key server is provided. The key server is a single device that broadcasts an encryption key to other devices in a network segment. Also, automatic reelection of a new key server is provided when a current key server becomes unavailable. Key receivers may separately detect that... Agent: Trellis Intellectual Property Law Group, PC

20070211895 - Data processing technique comprising encryption logic: A data processing technique includes encryption/decryption of an input dataword using a key to obtain an output dataword. Reversible single-bit operations are applied to the input dataword before the encryption or decryption, and/or application of single-bit operations to the output dataword obtained by the encryption or decryption, wherein the single-bit... Agent: O'shea, Getz & Kosakowski, P.C.

20070211891 - Methods and apparatus for persistent control and protection of content: A novel method and apparatus for protection of streamed media content is disclosed. In one aspect, the apparatus includes control means for governance of content streams or content objects, decryption means for decrypting content streams or content objects under control of the control means, and feedback means for tracking actual... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20070211890 - Table splitting for cryptographic processes: For a defined cryptographic process including an original substitution table, split masked substitution tables are provided to resist cryptographic attacks. The split masked substitution tables are defined with reference to a set of random value data words and a mask value. An entry in the split masked substitution tables is... Agent: Dimock Stratton LLP

20070211892 - Authenticated device, authenticating device and authenticating method: An authenticated device 200 includes a memory unit 220 to store at least one algorithm identifier and at least one encryption key identifier, a transmitting unit 212 to transmit at least one algorithm identifier and at least one encryption key identifier stored by the memory unit 220 to an authenticating... Agent: Birch Stewart Kolasch & Birch

20070211893 - Encryption and verification using partial public key: A method and device for using a partial public key in a cryptosystem. The cryptosystem may be based on a group, such as an elliptic curve over a finite field. The device includes a first memory for storing system parameters of the cryptosystem and a second memory for storing a... Agent: Motorola, Inc.

20070211894 - Encryption processing apparatus, encryption processing method, and computer program: An encryption processing apparatus for performing a scalar multiplication of kP+lQ based on two points P and Q on an elliptic curve and scalar values k and l or a scalar multiplication of kD1+lD2 based on divisors D1 and D2 and scalar values k and l may include a scalar... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20070211896 - Encryption and decryption programs and cryptosystem: An encryption computer program product, in a computer readable medium, including instructions executed by a computer for causing the computer to implement a method of encrypting input data, comprising, generating key data for each unit data constituting the input data; encrypting unit data with the key data to creating encrypted... Agent: Sughrue Mion, PLLC

20070211897 - Method of detecting watermarks: There is described a method of determining a measure of scale factor (MSF) by detecting a watermark included in a sequence (10) of images (20). The watermark is included in several mutually changed forms in the sequence (10). In a first step, the method involves receiving the sequence (10) of... Agent: Philips Intellectual Property & Standards

20070211898 - Copy protection for video signal using added negative amplitude pulse: Enhancements to a video anticopying process that causes an abnormally low amplitude video signal to be recorded on an illegal copy. The enhancements in one version introduce into the overscan portion of the television picture, just prior to the horizontal or vertical sync signals but in active video, a negative... Agent: Morrison & Foerster LLP

20070211899 - Copy protection for video signal using narrowed horizontal synchronization signals and defeat of same: Enhancements to a video anticopying process that causes an abnormally low amplitude video signal to be recorded on an illegal copy. The enhancements in one version introduce into the overscan portion of the television picture, just prior to the horizontal or vertical sync signals but in active video, a negative... Agent: Morrison & Foerster LLP

20070211900 - Network mobility security management: A node that couples to the Internet establishes a secure connection with another node that couples to the Internet. The secure connection to be established via an IPsec security association. The node registers with an authority that couples to the Internet and provides public key infrastructure (PKI) services. Registration is... Agent: Intel Corporation C/o Intellevate, LLC

20070211901 - Apparatus, method, and computer program product for recording contents: A content recording apparatus includes a reading unit that reads, from a recording medium, a title key, a title content in plane text, an encrypted title content, an adjunct data, and a plain text adjunct data. The content recording apparatus further includes a playlist generating unit that generates a first... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070211902 - Establishing shared information in a network: A method for establishing shared information is described. The method includes estimating characteristics of a communication channel between two nodes based on signals transmitted between the nodes. The method also includes transmitting a signal from the first node to the second node, the signal being modulated with a first data... Agent: Fish & Richardson PC

20070206785 - Ema protection of a calculation by an electronic circuit: A method for masking a digital quantity used by a calculation executed by an electronic circuit and including several iterations, each including at least one operation which is a function of at least one value depending on the digital quantity, the method including at least one first step of displacement... Agent: Stmicroelectronics Inc. C/o Wolf, Greenfield & Sacks, P.C.

20070206784 - Ring arithmetic method, system, and apparatus: A data encryption method performed with ring arithmetic operations using a residue number multiplication process wherein a first conversion to a first basis is done using a mixed radix system and a second conversion to a second basis is done using a mixed radix system. In some embodiments, a modulus... Agent: Fortkort & Houston P.C.

20070206787 - Method and system for secure transmission of an encrypted media stream across a network: Embodiments of the invention provide a method and system for sending a session key file encryption key for use in the secure transmission of an encrypted media stream across a network. A logging node receives a double encrypted session key file encryption key. The session key file encryption key is... Agent: Trellis Intellectual Property Law Group, PC

20070206786 - Rfid security system: A process for handling secret data. In an RFID tag, a cryptography key protecting the secret data is written while with a first holder, a threshold cryptography share is stored, or an arbitrary value is obtained for an identity-based encryption (IBE) algorithm. The cryptography key can then be read and... Agent: Attn: Curtis A. Vock Lathrop & Gage L.c.

20070206788 - Data encoding apparatus, data encoding method, data encoding program, and recording medium: A disclosed data encoding apparatus includes: an arbitrary number of storage units; a data transfer control unit dividing input data into data blocks in accordance with the arbitrary number of storage units and transferring the data blocks to each storage unit; and encoding units having the same number as the... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070206790 - Decryption method and apparatus using external device or service and revocation mechanism, and decryption support method and apparatus: A revocation examination method and apparatus for a device are provided. The method includes: storing information regarding revoked nodes; receiving from the device an identifier (ID) of the device and a revocation examination request message including an ID of a leaf node corresponding to the device; examining whether the device... Agent: Sughrue Mion, PLLC

20070206789 - Elliptic curve cryptosystem optimization using two phase key generation: A computer-implemented method of generating an elliptic curve cryptosystem (ECC) signature includes the steps of: generating a first random key (k1) having n bits, where n is a natural number; calculating a first ECC point (V) from k1 and a base point; and storing k1 and V securely in a... Agent: Venable LLP

20070206791 - Image processing apparatus: The security of image data is enhanced by utilizing operation keys used in performing image processing and by generating an apparatus-specific encryption key to encrypt the image data with the encryption key. Generation of the encryption key is started when an input is made with a specific operation key. Every... Agent: Edwards Angell Palmer & Dodge LLP

20070206792 - Library apparatus and library apparatus control method: The present invention provides a library apparatus capable of storing one or a plurality of recording media and managing data stored in the recording media. The library apparatus includes access control means for writing data or reading data on/from the recording medium; encrypting/decrypting means for encrypting/decrypting the data processed by... Agent: Staas & Halsey LLP

20070206793 - Protecting content from illicit reproduction by proof of existence of a complete data set via self-referencing sections: A number of data items are selected for inclusion in a data set so as to discourage a transmission of the entire set over a limited bandwidth communications path, such as the Internet. Each data item comprises one or more sections, and the totality of sections constitute the complete data... Agent: Philips Intellectual Property & Standards

20070206794 - Copy protection for video signal added pulses: Enhancements to a video anticopying process that causes an abnormally low amplitude video signal to be recorded on an illegal copy. In one version, positive going pulses are added to the video signal. The enhancements in one version introduce into the overscan portion of the television picture, just prior to... Agent: Morrison & Foerster LLP

20070206795 - Rf communication system having a chaotic signal generator and method for generating chaotic signal: A radio frequency (RF) communication system having a chaotic signal generator and a method of generating a chaotic signal. The RF communication system includes a chaotic signal generator which generates a chaotic signal having a plurality of frequency components at a predetermined frequency band, a modulator which generates a chaotic... Agent: Sughrue Mion, PLLC

20070206796 - Communication system, key distribution control device, and radio lan base station device: There are provided a communication system, a key distribution control device, and Wireless LAN base station device capable of more synchronizing the key configuration time of the Wireless LAN base station device with that of a communication terminal device, thereby reducing the communication cut-off period generated between the Wireless LAN... Agent: Stevens, Davis, Miller & Mosher, LLP

20070206797 - Seamless rfid tag security system: A Radio Frequency Identification (RFID) security system having a client, that includes a computerized system, at least one RFID tag, and a RFID reader. The computerized system and RFID reader employ a first security protocol and the RFID reader and RFID tags employ a second security protocol for communications. The... Agent: Intellectual Property Law Offices

20070206798 - Apparatus, method, and computer program product for recording content: A content recording apparatus includes a key selecting unit that selects an encryption key for performing an encrypting process to adjunct data from pieces of information recorded on a recording medium, when a user generates the adjunct data which is data derived from a title content, wherein the recording medium... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070206799 - Efficient key hierarchy for delivery of multimedia content: A Digital Rights Management (DRM) system provides a lightweight layering of encryption and decryption of keys that allows efficient use of different cryptographic techniques to effect the secure delivery of multimedia content. Asymmetric cryptography, where a public key is used to encrypt information that can only be decrypted by a... Agent: Qualcomm Incorporated