Cryptography inventions 10/07

20070248224 - Method for elliptic curve public key cryptographic validation: Communication and validation of information transfer from a transmitter to a receiver is achieved by generating a cipher (400) from a message m (410) using parameters of an elliptic curve, a generator point P (406) on the elliptic curve and a public key Q (416) of the receiver. The cipher... Agent: Motorola, Inc.

20070248225 - System and method for encrypted group network communication with point-to-point privacy: Various embodiments of the disclosed subject matter provide methods and systems for improved efficiency and security in secure gateway-to-secure gateway network communication. Embodiments provide systems and methods for generating a sender secure gateway private identity, obtaining a receiver secure gateway public identity, generating an encryption key using the sender secure... Agent: Schwegman, Lundberg & Woessner, P.A.

20070248226 - System and method for fast and scalable multimedia authentication in real time environment: A method of processing a plurality of digital data files including at least one group of medium data files for constituting a sequence of events or activities of a time interval for secure delivery of the digital data files, the method comprising the steps of: (a) processing a plurality of... Agent: Buchanan, Ingersoll & Rooney PC

20070248227 - Film fingerprinting: A technique for film marking includes coding a print identifier into a binary-coded serial number; identifying particular frames (bit frames) that will be used to convey the bits (binary digits) of the binary-coded serial number and marking these bit frames in accordance with the particular bit values of the binary-coded... Agent: Joseph J. Laks, Vice President Thomson Licensing LLC

20070248228 - Audio and video recording apparatus: Simultaneous recording of a digital content, which does not specify Copy Free, on recording medium of the same type is not authorized. Therefore, when a content that has been recorded by a recording/reproducing apparatus is being reproduced by the recording/reproducing apparatus, the content cannot be reproduced from the recording medium... Agent: Mcdermott Will & Emery LLP

20070248229 - Quantum cipher communication system and method of setting average photon number at communication terminal: A quantum cipher communication system performs communication processing based on quantum cipher. It may have a first communication terminal, a second communication terminal, and a communication path that connects them. The first communication terminal may contain an optical source, a first light-separating device, optical paths, a light-synthesizing device, a second... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20070248230 - Systems and methods for communication protection: A communications apparatus and method is provided to reliably protect communication systems, such as mobile phone systems, from unauthorized use, as well as to make the interception of wireless communication more difficult. Specifically, the static wireless phone number or other similar identifiers are not used for identification and authorization during... Agent: Nixon Peabody, LLP

20070248231 - Storage medium processing method, storage medium processing device, and program: Rental business of content data is adequately performed while preventing a improper use of rights or the like by a user. Rental user key data Kuren1-3, and rental content key data Kuren1-3 includes management metadata M1-M3 and M1′-M3′, respectively. The management metadata includes data use termination date/time indicating an expiration... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070248232 - Cryptographic key sharing method: A system for sharing secure keying information with a new device not of a secure wireless network. The keying information may be used for encryption and provided to the new device in a manner which is not susceptible to exposure outside of the secure network. The keying information shared with... Agent: Honeywell International Inc.

20070242821 - Method and apparatus for acquiring domain information and domain-related data: Provided are a method and apparatus for acquiring data regarding a domain for the protection of digital content, and more particularly, a method and apparatus for acquiring domain information and domain-related data in which content received from an external source is converted into content that complies with a set of... Agent: Sughrue Mion, PLLC

20070242822 - System, device, method, and program for communication: A communication device performing wireless communication with another communication device includes a private value generating unit, a calculating unit, and an encryption key generating unit is provided. The private value generating unit generates a first private value to be kept secret from outside parties. The calculating unit performs a predetermined... Agent: Bell, Boyd & Lloyd, LLP

20070242823 - Electronic forms including digital watermarking: The present invention relates to creating and managing electronic documents. In one implementation, a method includes obtaining electronic data corresponding to an application document to obtain a driver's license; analyzing the electronic data to detect steganographic indicia encoded therein, the steganographic indicia comprising a plural-bit identifier; and associating the plural-bit... Agent: Digimarc Corporation

20070242824 - Secure non-invasive method and system for distribution of digital assets: A server computer system outputs a downloader component to a client computer. The downloader component enables the client computer to download an encrypted file. After outputting the downloader component, the server computer system cooperates with the downloader component to output the encrypted file to the client computer. The server computer... Agent: Toler Schaffer, LLP

20070242826 - Audio/video identification watermarking: The invention is directed to marking audio/video (A/V) signals for use in tracing content to a source. An ID controller captures an A/V synchronization fingerprint from a master A/V signal, stores the fingerprint in a data store, and provides signals to an ID encoder to have encoded an identifier into... Agent: Darby & Darby P.C.

20070242825 - Distribution of video content using a trusted network key for sharing content: A method and apparatus for distributing video content from a direct broadcast satellite system between a host receiver and a client receiver. A family pairing key is transmitted from the direct broadcast satellite system to both the host and client receivers. The family pairing key received by the host and... Agent: The Directv Group Inc

20070242827 - Method and apparatus to provide content containing its own access permissions within a secure content service: A system to provide selective encryption controls for content is described. The system comprises a secure content service to verify entitlement of a content consumer to the encrypted content based on the entitlement associated with the content and a user profile associated with the content consumer.... Agent: Kenyon & Kenyon LLP

20070242828 - Dynamic interleaving of state vector components in an encrypted data communication system: A state vector acquisition technique for a counter-based cryptographic data communication system is disclosed. The acquisition technique facilitates receipt of the state vector components (the short component and the long components) in any chronological order. The state vector components are saved upon receipt, and a counter for each long component... Agent: Ingrassia Fisher & Lorenz, P.C.

20070242829 - Key table and authorization table management: In certain embodiments, a player device that receives and plays content stored on packaged media, the player device has a media reader that receives a packaged media to read digital data stored thereon. The player device has a secure persistent storage device storing a key table containing a plurality of... Agent: Miller Patent Services

20070242830 - Anonymous certificates with anonymous certificate show: The present invention relates to a method at an issuing authority (111) to anonymously provide an individual (121) with a certificate (C), a method of providing anonymous approval of the individual at a communicating party (101) by means of using the certificate, an issuing authority for anonymously providing an individual... Agent: Philips Intellectual Property & Standards

20070237324 - Cryptographic processing: Executable instructions designed to provide faster cryptographic processing, fixed-timing memory access, and dedicated memory usage are implementable on an x86 CPU utilizing XMM registers. The instructions can be utilized to implement cryptographic processing in accordance with the Advanced Encryption Standard (AES). To encrypt, a single instruction performs nonlinear transformation, rotation,... Agent: Woodcock Washburn LLP (microsoft Corporation)

20070237325 - Method and apparatus to improve security of cryptographic systems: A device having cryptographic capabilities is provided as including a security system connected to a microcontroller block, whereby the security system includes a non-volatile memory and a finite state machine. The finite state machine manages the device to maintain the content of an encryption key stored within the non-volatile memory... Agent: Volentine & Whitt PLLC

20070237326 - Computer system and computer program executing encryption or decryption: A computer system having resistance to timing attacks based on measuring processing times is offered. The computer system encrypts or decrypts a plain text or ciphertext via a process of converting the partial data on the plain text or the encrypted text into conversion data. A conversion table includes one... Agent: Wenderoth, Lind & Ponack L.L.P.

20070237327 - Method and system for high throughput blockwise independent encryption/decryption: An encryption technique is disclosed for encrypting a data segment comprising a plurality of data blocks, wherein the security and throughput of the encryption is enhanced by using blockwise independent bit vectors for reversible combination with the data blocks prior to key encryption. Preferably, the blockwise independent bit vectors are... Agent: Thompson Coburn, LLP

20070237328 - Method for encrypting video data: A method for encrypting video data in which the encryption achieves a high standard of security and is carried out at a reduced computation cost. The encryption comprises disordering a set of video data to be encrypted and obscuring the disordered video data.... Agent: Sutherland Asbill & Brennan LLP

20070237329 - System, method, and device for playing back recorded audio, video or other content from non-volatile memory cards, compact disks or other media: A secure software system for a portable device or computer that provides a simple interface to the device or computer and that retrieves and dynamically decrypts keys and content from a secure media while minimizing exposure of the keys and eliminating the need for manufacturers of the device or computer... Agent: Winston & Strawn, LLP

20070237330 - Method and apparatus for delivering subscription service content to roaming users: A subscriber or other user is provided with access to a subscription service of a signal distribution system at a roaming location remote from a home location of the user. The home and remote locations are serviced by respective first and second head ends of the system. The subscription service... Agent: Ryan, Mason & Lewis, LLP

20070237331 - Method for processing contents intended for broadcasting: A processing method of content intended for broadcasting is disclosed. The method includes, preceding broadcasting: encryption of the content by a plurality of control words, reservation of locations intended to receive a control message in the encrypted content, marking of each location with location information in the content, and storage... Agent: Harness, Dickey & Pierce, P.L.C

20070237332 - Method and system for encrypting and decrypting data using an external agent: A communication system including a transmitter, a receiver, a communication link (for example, a TMDS-like link), and preferably also an external agent with which the transmitter and receiver can communicate, in which video data (or other data) are encrypted, the encrypted data are transmitted from the transmitter to the receiver,... Agent: Alfred A. Equitz Girard & Equitz LLP

20070230687 - Method and apparatus to reduce the effect of crosstalk in a communications interface: A technique for reducing crosstalk between communications paths includes scrambling data using scrambling functions that reduce or substantially minimizing a probability that worst-case data patterns occur on communications paths adjacent to a potential victim communications path. In at least one embodiment of the invention, a method includes scrambling a plurality... Agent: Zagorin O'brien Graham LLP

20070230689 - Method for transferring messages comprising extensible markup language information: Methods for transferring messages (30) comprising extensible markup language information from sources (104) via intermediates (105) to destinations (106) are provided with hop-by-hop encryption/decryption processes instead of end-to-end encryption/decryption processes to reduce a complexity and to make non-encrypted messages (30) available inside the intermediates (105). The encryption/decryption processes are different... Agent: Sughrue Mion, PLLC

20070230688 - Secret communication system and method for generating shared secret information: A user request can be reflected in the degree of security of an updated key in quantum key distribution. A sender and a receiver are connected through optical fiber. A quantum transmitter in the sender and a quantum receiver in the receiver carry out basis reconciliation and error correction through... Agent: Dickstein Shapiro LLP

20070230691 - Method for write failure recovery: When cipher block chaining encryption/decryption is employed, write fault recovery is accomplished by storing information useful for the writing of cipher block chaining processed data before it is written to storage cells. Hence when write failure is discovered, this information stored can be retrieved for rewriting the data to the... Agent: Brinks Hofer Gilson & Lione/sandisk

20070230690 - System for write failure recovery: When cipher block chaining encryption/decryption is employed, write fault recovery is accomplished by storing information useful for the writing of cipher block chaining processed data before it is written to storage cells. Hence when write failure is discovered, this information stored can be retrieved for rewriting the data to the... Agent: Brinks Hofer Gilson & Lione/sandisk

20070230692 - Key generating apparatus, program, and method: A key generating apparatus generates a fibration X(x, y, t)=0 of an algebraic surface X serving as a part of a public key and defined on a finite field Fq (where q=pr [p is a prime number and r is an extended degree]) and a private key which is two... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070230695 - Apparatus and method for generating a number with random distribution: An apparatus for providing a number with random distribution for use in a circuit including a signal processor processing encrypted data. The apparatus includes a unit formed to provide the number from at least a portion of the encrypted data processed by the signal processor.... Agent: Dickstein Shapiro LLP

20070230694 - Cryptographically secure pseudo-random number generator: A cryptographically secure pseudo-random number generator is configured to obtain one or more unpredictable sources of entropy that provide a seed. A current internal state of the number generator is modified as a function of the current internal state and the seed to accumulate entropy. The modified internal state may... Agent: Qualcomm Incorporated

20070230693 - System and method for generating pseudo-random numbers: A process and system for generating a pseudo-random number is presented. Input data having entropy is gathered in an Entropy Pool and transformed once by a cryptographic hash function. The transformed data forms the internal state of the pseudo-random number generator. The generator forms the output by applying a second... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20070230696 - 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.

20070230697 - Method and system for implementing synchronization between a receiving end and a source end of a broadcast television service: A method and system for implementing synchronization between a receiving end and a source end of broadcast television service. The method includes: determining, at a transmitting station, time difference information between the source end and the transmitting station; and transmitting, by the transmitting station, time information of the transmitting station... Agent: Ladas & Parry LLP

20070230698 - Systems and methods for retrofitting electronic appliances to accept different content formats: Systems and methods are disclosed for using an arbitrary fixed channel to carry third-party information. In one embodiment, the present invention provides systems and methods for enabling existing content rendering devices to accept content encoded in a proprietary format, such as an encoding format used by a digital rights management... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20070230699 - Seamless switching between multiple pre-encrypted video files: In a video on demand (VOD) system, methods and apparatus are provided for seamlessly switching back and forth between two pre-encrypted files having changing encryption keys Such switching back and forth may be required when a VOD server stores both a “normal” copy of a movie and a “special” copy... Agent: General Instrument Corporation Dba The Connected Home Solutions Business Of Motorola, Inc.

20070230700 - Method and device for authorising conditional access: A method of authorising conditional access to an encrypted digital data product, includes storing at least one set of entitlements in a secure device, each entitlement including a product identifier and expiry information, receiving entitlement control messages from a decoder system including a device for decrypting encrypted digital data products... Agent: Schwegman, Lundberg, Woessner & Kluth, P.A.

20070230701 - Chaotic signal transmitter using pulse shaping method: The invention relates to a chaotic signal transmitter using a pulse shaping method to amplitude-modulate a chaotic signal according to a transmission signal, thereby transmitting the chaotic signal having various slopes. The chaotic signal transmitter includes a waveform converter for blocking high frequency component of the transmission signal to convert... Agent: Lowe Hauptman Berner, LLP

20070230702 - Method, system and apparatus for updating encryption keys on a mobile communication device: A system and method for managing key generation for a mobile communication device (116). In one embodiment, the system includes means (304) for receiving at the mobile communication device (116) a key generation request (506) during a communication session (530) between the mobile communication device (116) and a first communication... Agent: Danamraj & Youst, P.C.

20070230705 - Key-updating method, encryption processing method, key-insulated cryptosystem and terminal device: In a key-insulated cryptosystem according to the present invention, a plurality of external devices are associated with a number of updates of a terminal secret key which has already been updated, and a different piece of secret information is stored in each of the external devices. In addition, a key-updating... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070230706 - Method and apparatus for facilitating role-based cryptographic key management for a database: One embodiment of the present invention provides a system that facilitates role-based cryptographic key management. The system operates by receiving a request at a database server from a user to perform a cryptographic operation on data on the database server, wherein the user is a member of a role, and... Agent: Oracle International Corporation C/o Park, Vaughan & Fleming LLP

20070230707 - Method and apparatus for handling keys used for encryption and integrity: A method and an arrangement for providing keys for protecting communication between a terminal (300) and service points in a communication network. A basic key (Ik) is first established with a service control node (304) when the terminal has entered the network. An initial modified key (Ik1) is then created... Agent: Potomac Patent Group PLLC

20070230704 - Method and apparatus for managing cryptographic keys: One embodiment of the present invention provides a system for managing keys. During operation, the system receives a request from a user at a database to encrypt/decrypt data at the database. In response to this request, the system sends a user-token to the user, wherein the user-token includes a user-key... Agent: Oracle International Corporation C/o Park, Vaughan & Fleming LLP

20070230703 - Transmission of media keys: Techniques are described for communicating electronic media keys from one device to another. The target device may comprise different mechanisms for indicating that transmission of a media key is in progress and also to indicate successful transmission. Various actions may be performed in response to transmission of media keys.... Agent: Townsend And Townsend And Crew, LLP

20070230708 - Watermarking a compressed information signal: Disclosed is a method of embedding both a robust and a fragile watermark in an information signal which is compressed so as to include first signal samples having a first given value and further signal samples having a different value, wherein embedding the robust watermark. The method comprises the steps... Agent: Philips Intellectual Property & Standards