Cryptography inventions 08/07

20070201690 - Method and apparatus for configuring key of groups contained in domain: Provided is a method and apparatus for configuring keys of groups contained in a domain. The method includes generating a common key and N distribution keys according to the number (N) of users who join a domain, transmitting the common key to users' devices, and transmitting N−1 distribution keys of... Agent: Sughrue Mion, PLLC

20070201691 - Method of storing or recording highly confidential data, playback apparatus using highly confidential data, and memory storing highly confidential data: According to one embodiment, a storing or recording method of highly confidential data includes sorting a key set (a set of keys and position information items thereof) according to the position information items (for example, position numbers of a column) for each released apparatus, encrypting each pair of the sorted... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070201692 - Data transmission apparatus, data transmission method: A data communication apparatus which causes the eavesdropper to take a significantly increased time to analyze a cipher text and provides high concealability is provided. In a modulator section 112a, a branching section 114 branches a lightwave 20 outputted from a light source 113, and outputs respective branched lights to... Agent: Wenderoth, Lind & Ponack L.L.P.

20070201693 - Information processing apparatus and information processing method performing decoding or encryption: An information processing apparatus is provided which processes stream data including, in a non-encrypted region, pointer information designating keys used for decoding of data in an encrypted region of the stream data. In this processing, the apparatus detects change of the pointer information extracted in decoding of the stream data,... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070201694 - Privacy management in imaging system: The system and method obscures descriptive image information about one or more images. The system comprises a selector for selecting the descriptive image information from one or more of the images, a transformer that transforms the descriptive information into a transformed state, and an authorizer that provides authorization criteria with... Agent: Hoffman, Warnick & D'alessandro LLC

20070201695 - Pay per minute for dvb-h services: Provided are apparatuses, methods, and user interfaces for requesting access to a program or service, receiving the requested program or service and displaying the requested program or service at a user terminal. In one example, a request for a period of time for access to the program or service is... Agent: Banner & Witcoff, Ltd.

20070201696 - Profile acquiring method, apparatus, program, and storage medium: Preliminary information is received from a communication partner, a method of acquiring a profile of the communication partner is determined in accordance with the preliminary information received from the communication partner, and the profile is acquired from the communication partner by the determined method.... Agent: Fitzpatrick Cella Harper & Scinto

20070201697 - Method of authenticating mobile terminal: A method for authenticating a mobile terminal in a wireless network is disclosed. The method includes transmitting a request for authenticating the mobile terminal in that wireless network operative to provide services at a location where the mobile terminal is currently present, receiving the request at a base station associated... Agent: Browdy And Neimark, P.l.l.c. 624 Ninth Street, Nw

20070201698 - Key management device and method for providing security service in ethernet-based passive optical network: A key management device and method which is required for provision of a security service in an EPON vulnerable to security breaches due to characteristics of Ethernet. A session key distribution function is performed in such a manner that, during the process of communication setup between an OLT and an... Agent: Blakely Sokoloff Taylor & Zafman

20070201699 - Broadcast receiver and broadcast receiving method: When a broadcasting station transmits an application including an authentication key enabling use of a program recommendation engine or the like together with a program, a broadcast receiver identifies the application including the authentication key from other applications. When the application including the authentication key is received, the authentication key... Agent: Ratnerprestia

20070201700 - Efficient key updates in encrypted database systems: A system, method and programmed article of manufacture to perform efficient encryption key updates in encrypted database-as-a-service (DAS) environments using a key registry and key locks. A database as a service environment allows organizations to outsource their data management infrastructures to a database service provider. The service provider employs data... Agent: Karl O. Hesse IBM Corporation Iplaw Dept.

20070201701 - Prepaid access control method: The present invention aims at minimising the impact of an attack on the reloading of the credit into a security module connected to a Pay-TV decoder. The solution to this problem resides in a prepaid access control method to television products broadcasted in a data stream to a Pay-TV decoder... Agent: Harness, Dickey & Pierce, P.L.C

20070201702 - Electronic book security and copyright protection system: The invention, electronic book security and copyright protection system, provides for secure distribution of electronic text and graphics to subscribers and secure storage. The method may be executed at a content provider's site, at an operations center, over a video distribution system or over a variety of alternative distribution systems,... Agent: Arent Fox PLLC

20070195949 - Encryption processing method and encryption processing device: An increase in safety from attacks by use of hardware-like methods by small-sized hardware is achieved. An encryption processing device includes a logical circuit capable of programmably setting logics for executing cipher processing, a memory that stores plural pieces of logical configuration information corresponding to an identical cipher processing algorithm,... Agent: Reed Smith LLP

20070195950 - Method for the transmission of management data: This invention relates to a method for the transmission of management data to at least one multimedia unit or a group of multimedia units. This method is characterised in that said management data is sent in the form of at least one authorisation message encrypted by means of at least... Agent: Harness, Dickey & Pierce, P.L.C

20070195948 - Method and device for the encryption and decryption of data: Method for the encryption of data as well as a corresponding decryption method are set forth. In order to guarantee a secure transmission of data with relatively little effort, an encryption method is provided in which a key vector with a second length is generated from a secret key information... Agent: Woodcock Washburn LLP

20070195952 - Method and system for computational transformation: The invention generally relates to computational transformation process, which has applications in cryptography, random number generation, hash code generation etc. The computational transformation module uses a keyset, which is designed using a two dimensional array. Since the process of forward transformation used in the invention is a symmetric encryption process... Agent: GlobalIPServices

20070195951 - Pipeline for high-throughput encrypt functions: A method and network device to process network data is described. The method may comprise receiving the network data and security operation data at a security engine. The security operation data may be associated with a security operation (e.g., encryption, decryption, hashing, or the like) to be performed on the... Agent: Schwegman, Lundberg, Woessner & Kluth, P.A.

20070195953 - Method and system for the secure distribution of compressed digital texts: A process for the secure distribution of compressed digital texts formed by blocks of binary data stemming from digital transformations applied to an original text, and including two stages: a preparatory stage including modifying at least one binary data in one of the blocks according to at least one substitution... Agent: Ip Group Of Dla Piper US LLP

20070195954 - Image forming apparatus for printing security documents by duplex printing and method thereof: An image forming apparatus printing a security document by duplex printing and a method thereof are provided. The image forming apparatus comprises a terminal device interface unit receiving a printing command for printing a printable code data from an exterior terminal device, a printing engine unit printing the code data... Agent: Roylance, Abrams, Berdo & Goodman, L.L.P.

20070195955 - Apparatus and method for providing secure end-to-end communications in a wireless network: An apparatus and method for providing secure end-to-end communications over a wireless network. Audio transmissions are encrypted at the sending wireless device before being transmitted over the wireless network. Encrypted audio messages received from the wireless network are decrypted at the receiving wireless device, and then played to a user.... Agent: Qualcomm Incorporated

20070195958 - Extensible closed-loop security system: An extensible, closed-loop secure system with integrated feedback. One particular embodiment comprises a closed-loop security system with secured closed-loop endpoints, secure ring of connectivity, and secure program logic. The closed loop security system transports encapsulated security packets among secure closed-loop endpoints, through an interconnectivity pipeline, with secure control flow managed... Agent: W. Edward Ramage

20070195956 - Association, authentication, and security in a network: Methods, devices, and systems are provided facilitating security within a network managed by a central coordinator. In some embodiments, the exchange of security keys is performed within one or more time slots that are defined by the central coordinator and known to stations exchanging these security keys. Furthermore, security, e.g.,... Agent: Michael Blaine Brooks, PC

20070195957 - Method and apparatus for secure key management and protection: In a system having a control processor, an apparatus is provided with at least one memory. The at least one memory includes a first memory portion for storing at least one first decryption key. A decryption engine uses the first decryption key to decrypt information. A key processor provides the... Agent: Duane Morris LLPIPDepartment (agere)

20070195959 - Synchronizing encrypted data without content decryption: Encrypted content is synchronized without requiring a password. The structure of the data is synchronized while the content of the data remains encrypted. When the user desires viewing the encrypted content of the structure, the user is prompted for the password to render the encrypted content. Succinctly stated, the password... Agent: Merchant & Gould (microsoft)

20070195960 - Apparatus and method for encrypting data: A method for sharing a data set including multiple classifications of security between one or more entities and/or between one or more organizations. Public-keys for use in selectively encrypting the data set with multiple classifications of security are made available in a public-key table. A private-key corresponding to the public-key... Agent: Steptoe & Johnson LLP

20070189525 - Method and system providing scrambled content: A method of providing scrambled data includes providing a stream of data units based on a sequence of clear data units by at least subjecting at least part of at least some of the clear data units to a cryptographic operation employing a first encryption key which forms a key... Agent: Schwegman, Lundberg, Woessner & Kluth, P.A.

20070189509 - Data path identification and analysis for distributed applications: A method for identifying a data processing path in a distributed computing network is disclosed. Initially, a call from a local device to a remote device is initiated. A path identifier is then generated which uniquely identifies the flow of data from the local device to the remote device. The... Agent: Fenwick & West LLP

20070189510 - Data collector: Disclosed is a data collector that collects a first data string sent by a control unit to a network according to a predetermined format. The control unit has a first identification number, and the first data string includes the first identification number and a parameter which is used to control... Agent: Foley And Lardner LLP Suite 500

20070189512 - Method and apparatus for processing stream encryption/decryption: This invention discloses a method and an apparatus for processing stream encryption/decryption and more particularly to a diffusion operation of a matrix of at least one dimension including a displacement and an exclusion or (XOR), so that a plurality of diffused starting positions is converted into a diffused function operation... Agent: Charles E. Baxley, Esq.

20070189514 - Method and system for transmission-based billing applications: Computer- and network-based methods and systems for transmission-based billing are provided. Example embodiments provide a Packet-Based Billing System (“PBBS”), which enables application providers, such as carriers and content providers, to bill subscribers for the use of content on mobile subscriber devices, such as wireless devices, on a per-application, per-user basis... Agent: Philip H. Burrus, Iv

20070189513 - Process for generating an elliptic curve, application in a cryptographic process, and cryptographic process using such a curve: The invention relates, mainly to a cryptographic process using an elliptic curve represented by means of an equation containing first and second parameters (a, b), a bilinear matching, and calculations in a finite group of integers constructed around at least one first reduction rule reducing each integer to its remainder... Agent: Buchanan, Ingersoll & Rooney PC

20070189511 - Randomized sparse formats for efficient and secure computation on elliptic curves: Techniques are described that facilitate cryptographic operations, such as data encryption, signing and others, encryption using a computerized method for multiplying a scalar by a point. In one implementation, a set of random integers is selected, wherein the set comprises at least one integer selected randomly. A string is configured,... Agent: Lee & Hayes PLLC

20070189518 - 3-d quaternion quantum fractal encryption: An encryption method based on a controlled permutation algorithm using a three-dimensional quaternion quantum fractal image to establish a nearly infinite range of data from which encryption keys can be derived. The data of the fractal is converted at base 16 to yield millions of possible combinations for each pixel... Agent: Edwin Tarver

20070189521 - Data transmission apparatus, data receiving apparatus and data communication method: A highly concealable data communication apparatus which is based on an astronomical complexity and causes an eavesdropper to take a significantly increased time to analyze a cipher text, is provided. In a multi-level code generation section 111a, a random number sequence generation section 141 generates, based on predetermined key information... Agent: Wenderoth, Lind & Ponack L.L.P.

20070189519 - Detecting compromised ballots: A facility for discerning corruption of an electronic ballot is described. The facility sends from a first computer system to a second computer system an encrypted ballot that reflects a ballot choice selected by a voter. The facility then sends a confirmation from the second computer system to the first... Agent: Perkins Coie LLP Patent-sea

20070189516 - Diffused asymmetric encryption/decryption method: This invention discloses an asymmetric encryption/decryption method processed by diffusion algebra, and more particularly to a multiplication method using one-dimensional matrix displacement and addition to generate a ciphertext by multiplying a public (or private) key with a plaintext or obtain the plaintext by multiplying the private (or public) key with... Agent: Charles E. Baxley, Esq.

20070189517 - Pseudo public key encryption: According to the present invention, a secret key cryptosystem and tamper-proof hardware are used to realize a pseudo public key cryptosystem at a low cost. A trap-door one-way function is substantially realized with the use of tamper-proof hardware. Each user performs communication using equipment provided with hardware having the same... Agent: Louis Paul Herzberg

20070189515 - Public key cryptosystem and associated method utilizing a hard lattice with o(n log n) random bits for security: A public key cryptosystem utilizes a hard lattice with O(n log n) random bits for security. The system comprises a public-key cryptosystem whose hardness assumption is a clearly stated mathematical problem with a long history and comprises a short key, reaching a balance between the favorable properties of the hardness... Agent: Shimokaji & Associates, P.C.

20070189520 - Systems and methods to facilitate transition from communication to commerce: A method and system to facilitate the conversion from communications to commerce. In one embodiment, a method includes: establishing a communication session between a first user and a second user; facilitating communications between the first user and the second user for a first period of time of the communication session;... Agent: Greenberg Traurig, LLP (sv)IPDocketing

20070189522 - Apparatuses for encoding, decoding, and authenticating data in cipher block chaining messaging authentication code: Disclosed are apparatuses and methods to process message data according to a cipher block chaining messaging authentication code (CCM) protocol... Agent: Sheppard, Mullin, Richter & Hampton LLP

20070189524 - Method and apparatus for facilitating efficient authenticated encryption: A shared-key encryption scheme that uses identically keyed block-cipher calls, low additional overhead, supports the encryption of arbitrary-length strings, produces a minimal-length-ciphertext, and is fully parallelizable. In one embodiment, “OCB”, a key shared between communicating parties is mapped to a key variant using the block cipher. The key variant is... Agent: Park, Vaughan & Fleming LLP

20070189523 - Method and system for a ciphering interface with list processing: A method and system for ciphering interface with list processing is described. Various aspects of a system for ciphering interface with list processing may include a cipher module that enables deciphering and/or bit stuffing, in hardware, of a potion of one of a plurality of data blocks starting at any... Agent: Mcandrews Held & Malloy, Ltd

20070189527 - Elliptic curve random number generation: An elliptic curve random number generator avoids escrow keys by choosing a point Q on the elliptic curve as verifiably random. An arbitrary string is chosen and a hash of that string computed. The hash is then converted to a field element of the desired field, the field element regarded... Agent: Blake, Cassels & Graydon LLP

20070189526 - System and method for secure and flexible key schedule generation: The present invention is a method for secure and flexible key schedule generation, which includes loading a key schedule algorithm and a cryptographic algorithm into a cryptographic engine. The method further includes loading the cryptographic algorithm, when selected, into a cryptographic co-processor. The method further includes loading the key schedule... Agent: Rockwell Collins, Inc. Intellectual Property Department

20070189528 - Wireless lan transmitting and receiving apparatus and key distribution method: Two stations in a wireless local area network generate a key from a shared key by generating respective proprietary random numbers, using the shared key to encrypt the proprietary random numbers, sending each other the encrypted proprietary random numbers, using the shared key to decrypt the encrypted proprietary random numbers,... Agent: Volentine & Whitt PLLC

20070189529 - Encryption/decryption of program data but not psi data: At a transmitter, a program is encrypting according to a one program key, the program key is encrypted, and the encrypted program, the encrypted program key, and non-encrypted PSI data to a receiver are transmitted. At a receiver, the encrypted program, the encrypted program key, and the non-encrypted PSI data... Agent: Zenith Electronics Corporation

20070189530 - Management system for digital broadcast rights and a method thereof: A management system for digital broadcast rights and a method thereof, which applies to a digital video broadcasting system and utilizes the function of a multimedia home platform; when the multimedia data is intended to record or replay, the user's data will be analyzed to determine whether the user is... Agent: Rosenberg, Klein & Lee

20070189531 - Secure distributed process and system for the protection and distribution of audiovisual streams: A process for secure distribution of digital audiovisual streams according to a standard, normalized or proprietary format, on which streams a separation of the stream into two parts is made prior to transmission to equipment of an addressee to generate a modified main stream having a format of the original... Agent: Ip Group Of Dla Piper US LLP

20070189532 - Mobile communication device, mobile communication device control program, and mobile communication device control method: There is provided a mobile communication device having a function capable of releasing lock on an IC card function by an authentication key other then a PIN if the IC card function is locked by a PIN authentication error in a mobile phone having a contactless IC card built in.... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070189533 - Wireless methods and devices employing steganography: Wireless devices and methods employ steganography for a variety of purposes. An exemplary application is a battery-powered cell phone, having, e.g., a microphone, a speaker, a modulator, an antenna, and an RF amplifier. In such application, steganographic techniques can be employed to encode, or decode, signals processed by the phone.... Agent: Digimarc Corporation

20070189534 - Encrypting message for secure transmission: A system, apparatus, and method are provided for enhancing entropy in a pseudo-random number generator (PRNG) using remote sources. According to one embodiment of the present invention, first, the PRNG's internal state is initialized. Local seeding information is then obtained from a local host. For added security, additional seeding information... Agent: Blakely Sokoloff Taylor & Zafman

20070189535 - Method and apparatus for protecting contents supporting broadcast service between service provider and a plurality of mobile stations: A method of receiving by a mobile station an encrypted form of broadcast service content broadcasted by a service provider (SP). The method includes receiving at least one encryption key from the SP, receiving a broadcast control message comprising a second encryption key, and decrypting the broadcast control message with... Agent: Roylance, Abrams, Berdo & Goodman, L.L.P.

20070189536 - Cryptographic unit and method for operating a cryptographic unit: A cryptographic unit includes a first processing unit for determining an output signal on the basis of the AES algorithm and for determining a first comparison signal, a second processing unit for determining a second comparison signal, and a release unit for providing the output signal, wherein the release unit... Agent: Dickstein Shapiro LLP

20070189537 - Wlan session management techniques with secure rekeying and logoff: The invention provides a method for improving the security of a mobile terminal in a WLAN environment by installing two shared secrets instead of one shared secret, the initial session key, on both the wireless user machine and the WLAN access point during the user authentication phase. One of the... Agent: Joseph J. Laks, Vice President Thomson Licensing LLC

20070189538 - Rapid acquisition of state vectors 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.

20070189539 - Hierarchical threshold tree-based broadcast encryption method: A hierarchical threshold tree-based broadcast encryption method includes a first step for a server initialization and a user subscription, a second step of distributing a message to enable a privileged user (authorized user) to decrypt a group key, and a third step of the privileged user (authorized user) decrypting the... Agent: Sughrue Mion, PLLC

20070189540 - Improved broadcast key-derivation: A key generation system is disclosed that provides for the generation of privileged group keys based on the input of a privileged group. The system performing the key generation has stored component keys corresponding to every possible subset X of the unitary set, where subsets X have k or fewer... Agent: Morgan & Finnegan, L.L.P.

20070189541 - Method and system for initialzing a key management system: A network system for key management including a server, a key management system providing process logic for key management system initialization located on the server, a key management system storage providing a secure data storage for the key management system, and an interface providing a means for inputting data into... Agent: Osha . Liang L.L.P. / Slb

20070189542 - Method and apparatus for secured electronic commerce: A user anonymously acquires a first sequence of encryption key material. An encryption server, having a second sequence complementary to the first sequence, receives and forwards encrypted messages and monitors utilization of encryption key material by the user. As the key material is used, the server adjusts user accounts to... Agent: Kyle W. Rost

20070189543 - Data-processing apparatus and method for processing data: A data-processing apparatus has a data provider for providing an input datum encrypted by an encryption key. In addition, the data-processing apparatus has a key stream generator for generating a key stream in a predetermined deterministic manner such that the key stream has a decryption key corresponding to the encryption... Agent: Dickstein Shapiro LLP

20070183594 - Data processing apparatus for performing a cryptographic method: An encoding data processing apparatus operable to execute a cryptographic method to form an encrypted ciphertext sequence of data symbols from an input plaintext sequence of data symbols, said cryptographic method comprising a plurality of functional stages, said encoding data processing apparatus comprising: a plurality of data processing units arranged... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070183593 - Encryption method, cryptogram decoding method, encryptor, cryptogram decoder, and communication system: An encryption technique having a greater encryption strength than conventional mathematical encryption by using classic physical random numbers etc., including a step for modulating one-bit input data into a coded signal by associating it with a discrete value of at least two bits determined by pseudo random numbers and physical... Agent: Bingham Mccutchen LLP

20070183595 - Wireless entertainment and security system: A wireless entertainment and security system includes a security arrangement, a base station, and a wireless communication arrangement. The security arrangement includes a video activator defining a security area, and a video capturing device electrically linked to the video activator and arranged in such a manner that when the video... Agent: Raymond Y. Chan

20070183596 - Personal short code translation: The present invention relates to a method for setting up a call for a short-code access number dialed out by a mobile terminal, said method comprising the steps of: intercepting said dialed-out short-code access number by software or hardware logic on said mobile terminal, and storing said short-code access number... Agent: Browdy And Neimark, P.l.l.c. 624 Ninth Street, Nw

20070183597 - Broadcast encryption based home security system: Provided is a method for providing a home or business security system that relies upon data encryption for both communication and the storage of content. The disclosed technology incorporates all the devices necessary for a comprehensive security system, including, but not limited to, controllers, monitors, alarms and communication media. The... Agent: Greg Goshorn, P.C.

20070183598 - Apparatus for managing drm installation and method thereof: Provided is a DRM installation management device and method, which requests secret DRM from a DRM Center in order to use DRM that is necessary to access content, receives the requested secret DRM and installs the DRM, and is able to implement authentication and decryption using the secret DRM. Even... Agent: Roylance, Abrams, Berdo & Goodman, L.L.P.

20070183599 - Security key distribution using key rollover strategies for wireless networks: Security key distribution techniques using key rollover strategies for wireless networks are described. A number of keys are generated, usually by an access point. The present invention allows a standard mode and a mixed mode. In standard mode, each device on the network supports automatic key updates. In mixed mode,... Agent: Ryan, Mason & Lewis, LLP Suite 205

20070183600 - Secure cryptographic communication system using kem-dem: A secure communication system comprising: a communications network; at a sending location on said network: (i) an encapsulator (1) for providing (a) a session key (K), and (b) plurality of asymmetric encryptions of the session key (E1(K), E2(K), E3(K) . . . Ei(K) . . . En(K)), each said encryption... Agent: Patent Docket Administrator Lowenstein Sandler PC

20070177724 - Data transmitter and data receiver: A data communication apparatus which causes the eavesdropper to take a significantly increased time to analyze a cipher text and provides high concealability is provided. A multi-level code generation section 111a generates, based on predetermined key information 11, a multi-level code sequence 12 in which a signal level changes so... Agent: Wenderoth, Lind & Ponack L.L.P.

20070177722 - Hardware-based encryption/decryption employing dual ported key storage: A system for the encryption and decryption of data employing dual ported RAM for key storage to accelerate data processing operations. The on-chip key storage includes a dual-ported memory device which allows keys to be loaded into memory simultaneous with keys being read out of memory. Thus, an encryption or... Agent: Tucker, Ellis & West LLP

20070177723 - Method of and device for encoding a data stream: A method of and devices for encoding an information stream (20) into a variable bit rate (VBR) encoded information stream (24) have been proposed. The application discloses an improved constraint variable bit rate (CVBR) encoding, which guarantees that in a particular recording mode on a record carrier, any contiguous selection... Agent: Philips Intellectual Property & Standards

20070177719 - Method, apparatus, system, and program for content encoding, and content reception: There are provided a system, an apparatus, and a method for suppressing increase in an amount of distribution data when performing content distribution via a network, improving reliability of the data received by a receiver in the distribution through an unstable transmission path such as a wireless transmission path, enabling... Agent: Dickstein Shapiro LLP

20070177720 - Secure data processing method based particularly on a cryptographic algorithm: The invention relates to a secure data processing method comprising the steps of generating (E204; E304) a first random value (A1); executing (E206; E306) a first cryptographic algorithm (FK) using the first random value (A1); generating (E208; E308) a second random value (A2); executing (E210; E310) a second cryptographic algorithm... Agent: Young & Thompson

20070177721 - Tamper-proof elliptic encryption with private key: An encryption device (10) for performing elliptic encryption processing with a private key, includes: randomizing means (16) for setting, into an initial elliptic point V0, an elliptic point R on an elliptic curve that is generated in accordance with a random value; operation means (20) for performing a first operation... Agent: Staas & Halsey LLP

20070177718 - Transmitting apparatus, receiving apparatus, and data transmission system: Video data exploitation by alteration of data is prevented. An extractor 111 extracts valid video data in data 110 and predetermined data in the data. An inserter 114 inserts an arithmetic operation result of the predetermined data by an arithmetic operation unit 113 into the valid video data encrypted by... Agent: William S Frommer Frommer Lawrence & Haug

20070177726 - Digital signatures on a smartcard: A digital signature scheme for a “smart” card utilizes a set of prestored signing elements and combines pairs of the elements to produce a new session pair. The combination of the elements is performed partly on the card and partly on the associated transaction device so that the exchange of... Agent: Blake, Cassels & Graydon LLP

20070177727 - Method of a public key encryption and a cypher communication both secure against a chosen-ciphertext attack: The public-key encryption method uses the sender-side apparatus by the creator of a ciphertest and creates the ciphertext of a plaintext x (∈ {0, 1}n), in y1=f (x0k1G(r)), y2=H (x0k1G(r))r with respect to the published trapdoor-equipped unidirectional function f and the random functions G, H. Meanwhile, the receiver of the... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20070177725 - System and method for transmitting and receiving secret information, and wireless local communication device using the same: A system and method for transmitting and receiving secret information, a device using the same, and a wireless local communication device. The system for transmitting and receiving secret information includes at least one device to generate a ciphertext using public key information that is received over a location-limited channel; and... Agent: Staas & Halsey LLP

20070177728 - Aria encryption/decryption apparatus and method, and method of generating initialization key for the same: Disclosed is an Academy, Research Institute, and Agency (ARIA) encryption/decryption apparatus for encrypting and decrypting input data by repeating a plurality of rounds. The ARIA encryption/decryption apparatus includes a first register storing input data or an intermediate calculation value according to a first control signal; a second register storing a... Agent: Ladas & Parry LLP

20070177729 - Generation of perfectly secret keys in wireless communication networks: A method and apparatus is used for generating a perfectly random secret key between two or more transceivers in a wireless communication network. In a point-to-point system, both transceivers produce an estimate of the channel impulse response (CIR) based on the received radio signal. The CIR estimation is synchronized and... Agent: Volpe And Koenig, P.C. Dept. Icc

20070177730 - Method and apparatus for remote digital key generation: A method and apparatus that uses the dynamics of chaotic systems for the remote generation of a digital key, for use in any encryption algorithm. After initialization, the dynamics of a chaotic system are allowed to generate the 0 and 1 bits of a key bitstream. An initialization bitstream is... Agent: Fish & NeaveIPGroup Ropes & Gray LLP

20070177731 - Identity-based-encryption messaging system with public parameter host servers: A system is provided that uses identity-based encryption (IBE) to support secure communications. Messages from a sender may be encrypted using an IBE public key and IBE public parameter information associated with a recipient. The recipient may decrypt IBE-encrypted messages from the sender using an IBE private key. A host... Agent: G. Victor Treyz

20070177732 - Space-time scrambling for cellular systems: Techniques for transmitting data with space-time scrambling in cellular systems (e.g., CDMA systems) are described. At least one stream of data symbols is generated, mapped to one or more physical channels, and spread with channelization codes for the physical channels. Space-time scrambling is performed on the at least one stream... Agent: Qualcomm Incorporated

20070177733 - Method of descrambling a scrambled content data object: In a method of descrambling a scrambled content data object, at least a section of the scrambled content data object is descrambled by applying at least one decryption operation under a key at least partly derivable from a content descrambling key. At least one content descrambling key is obtained from... Agent: Schwegman, Lundberg, Woessner & Kluth, P.A.

20070177734 - Fast channel switching in a multimedia broadcast system: A wireless broadcast system is disclosed. The wireless broadcast system includes a transmitter for broadcasting to a wireless communications device. The transmitter receives a plurality of streams on a logical channel, wherein one of the streams contains signaling. The transmitter arranges the streams such that the stream containing the signaling... Agent: Qualcomm Incorporated

20070177735 - Quantum secret splitting based on non-orthogonal multi-particle states: Systems and methods for quantum secret splitting based on non-orthogonal multi-particle states are disclosed. The method includes preparing at a sender (“Charlie”) two qubits each of which can be in one of two non-orthogonal states and distributing the qubits to respective parties Alice and Bob. The method also includes measuring... Agent: OpticusIPLaw, PLLC

20070177736 - Functional module card for transferring digital broadcasting signal using two transfer modes: A functional module card and a host apparatus according to the present invention can constitute the digital broadcasting receiver apparatus. The functional module card includes a card controller and a tuner section. The tuner section inputs a digital broadcasting signal, generates a transport stream (referred to as a TS hereinafter)... Agent: Wenderoth, Lind & Ponack L.L.P.

20070177737 - Network and domain-creating method thereof: A network capable of communicating with foreign networks and having a plurality of devices capable of mutually communicating with one another and a domain setup method thereof. The network includes at least one main remote controller for, out of the devices, setting up authorization to use the respective devices belonging... Agent: Sughrue Mion, PLLC

20070177738 - Secure two-way rfid communications: Methods and apparatus provide secure two-way (reader-to-tag and tag-to-reader) RFID communications. According to one aspect, a tag receives a noise-encrypted RF carrier signal from a reader and backscatter modulates it with tag information. Eavesdroppers cannot extract the tag information from the backscattered signal because it is masked by the noise... Agent: David B. Ritchie Thelen Reid & Priest LLP

20070177740 - Encryption key distribution system, key distribution server, locking terminal, viewing terminal, encryption key distribution method, and computer-readable medium: It is aimed to provide an encryption key distribution system which can be easily operated, highly freely share the data therein, and achieve high reliability for authentication of one or more unlocking right owners who are assigned to each encrypted folder. An encryption key distribution system 500 stores a lock... Agent: Stroock & Stroock & Lavan LLP

20070177739 - Method and apparatus for distributed data replication: Disclosed is a data replication technique for providing erasure encoded replication of large data sets over a geographically distributed replica set. The technique utilizes a multicast tree to store, forward, and erasure encode the data set. The erasure encoding of data may be performed at various locations within the multicast... Agent: Nec Laboratories America, Inc.