Cryptography inventions 11/08

20080292095 - Qkd cascaded network with loop-back capability: A QKD cascaded network (5) with loop-back capability is disclosed. The QKD system network includes a plurality of cascaded QKD relays (10, 20, 30) each having two QKD stations Alice (A) and Bob (B) therein. Each QKD relay also includes an optical switch (50). The optical switch is optically coupled... Agent: OpticusIPLaw, PLLC

20080292098 - Communication system and receiver device: A communication system includes: a transmission device; and a reception device, wherein the transmission device includes an encryption section that encrypts a plaintext to be transmitted to the reception device with a first encryption key, and a transmission section that transmits the encrypted plaintext to the reception device; and the... Agent: Harness, Dickey & Pierce, P.L.C

20080292096 - Hybrid data encryption: A method and apparatus for encrypting and decrypting data. A first block cipher encrypts data to generate a first cipher output. A first double irregular columnar transposition cipher encrypts the first cipher output to generate a second cipher output. A second block cipher encrypts the second cipher output to generate... Agent: Blakely Sokoloff Taylor & Zafman LLP

20080292097 - System and method for text-based encryption: A system, method, and computer program for text-based encryption, comprising accessing a text file with a plurality of lines of text characters; re-sequencing each of said text characters; translating a base representation for each of said text character by an offset of a base value so that a resulting translated... Agent: Siemens Corporation Intellectual Property Department

20080292100 - Non-linear data converter, encoder and decoder: According to an aspect of the present invention, there is provided a non-linear data converter including: first to fourth converters that each performs a respective converting process on an input bit string to output respective output bit string; a generator that generates a random number bit string; and a selector... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080292099 - Two non-orthogonal states quantum cryptography method and apparatus with inter-and inter-qubit interference for eavesdropper detection: An apparatus and method for implementing a secure quantum cryptography system using two non-orthogonal states. For each qubit, the to emitter station prepares a quantum system in one of two non-orthogonal quantum states in the time-basis to code bit values. Intra- and inter-qubit interference is then used to reveal eavesdropping... Agent: Moetteli & Associates Sarl

20080292101 - Method and system for improving robustness of secure messaging in a mobile communications network: A mobile communications network has mobile communications capabilities and supports a secure messaging service, such as an SMS messaging service, that allows a message sender and at least one message receiver (at least one among the message sender and the message receiver being a user of the mobile communications network)... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080292102 - Quantum key distribution system and method: A method and system for transmitting optical clock signals and quantum key signals on a single optical channel, and for reducing quantum bit error rate in a quantum key distribution system. The method includes receiving a multi-photon optical clock signal at an electro-optic switch at a first clock rate. The... Agent: Duke W. Yee

20080292103 - Method and apparatus for encrypting and transmitting contents, and method and apparatus for decrypting encrypted contents: Provided are a method and apparatus for encrypting and transmitting contents and decrypting the encrypted contents in order to improve security for authority of use of the contents in a contents used environment by installing various content protection software in a content device. The method of encrypting and transmitting the... Agent: Sughrue Mion, PLLC

20080292104 - Recovery of expired decryption keys: At least one expired decryption key intended to be used for asymmetrical decryption of encrypted data is recovered in a terminal after generation of a cryptographic encryption key/decryption key pair stored in a cryptographic medium such as a microchip card. The expired decryption key is stored in a database accessible... Agent: Lowe Hauptman Ham & Berner, LLP

20080292105 - Lightweight key distribution and management method for sensor networks: A lightweight security framework is disclosed that combines PKI with symmetric key cryptography to exploit the system asymmetry in hierarchical sensor networks. The framework provides protocols for public key exchange, session and group key generation, pair-wise key generation, and network resource protection in a low-cost security architecture. The security framework... Agent: Carrie A. Boone, P.C.

20080285743 - Data encryption device and data encryption method: A data encryption device that is capable of stopping power analysis attacks and reducing instances of speed drops and memory amount increases in encryption processing more effectively than in the past; the data encryption device performs a predetermined encryption, based on a key, on a plain text, and includes a... Agent: Wenderoth, Lind & Ponack L.L.P.

20080285744 - Block ciphering system, using permutations to hide the core ciphering function of each encryption round: In a system (600), a server (610) provides a digital signal processing function ƒ to an executing device (620) in an obfuscated form. The function ƒ includes a function cascade of signal processing functions ƒ1, 1≦i≦N to formula (I). The server includes a processor (612) for selecting a set of... Agent: Philips Intellectual Property & Standards

20080285746 - Computationally asymmetric cryptographic systems;: This invention is generally concerned with methods, apparatus and computer program code for a computationally asymmetric hash function, in particular for use with symmetric cryptographic algorithms. We describe a method of determining a computationally asymmetric hash function value, the method including: receiving input data to be hashed; computing an asymmetric... Agent: Knobbe Martens Olson & Bear LLP

20080285745 - Processor for executing an aes-type algorithm: A processor for executing a Rijndeal algorithm which applies a plurality of encryption rounds to a data block array in order to obtain an array of identical size, each round involving a key block array and a data block substitution table, wherein said processor comprises: a first input register (102)... Agent: Stmicroelectronics Inc. C/o Wolf, Greenfield & Sacks, P.C.

20080285747 - Encryption-based security protection method for processor and apparatus thereof: An encryption-based security protection method and apparatus are provided. The method includes generating a random key pattern table in order to allocate a plurality of random key patterns of original data to be transmitted; generating an address pattern table in order to allocate a plurality of address patterns of addresses... Agent: Sughrue Mion, PLLC

20080285748 - Method for generating secret key in computer device and obtaining the encrypting and decrypting key: The invention relates to a method for generating an secret key in a computer device and using the secret key. The method includes the step of receiving an inputted password first, then processing the inputted password with a device key to generate a user certificate, wherein the device key is... Agent: Bacon & Thomas, PLLC

20080285749 - Method and apparatus for generating security key in a mobile communication system: Disclosed is an apparatus and method for generating a security key in a mobile communication system that performs security key generation. An Authentication, Authorization and Accounting (AAA) server generates a Master Session Key (MSK) and an Enhanced MSK (EMSK) from a Long Term Credential key, and a Device-MSK (D-MSK), a... Agent: The Farrell Law Firm, P.C.

20080285750 - Decryption device: A decryption device includes: an internal-key storage section for storing an internal-key; a content-key storage section for storing a content-key; a determination section for determining whether or not a value of the content-key storage section in its initial state and a current value of the content-key storage section are different;... Agent: Snell & Wilmer L.L.P. (main)

20080285751 - Deterring theft of media recording devices by encrypting recorded media files: Techniques are disclosed for deterring theft of media recording devices. Input received from a sensor, or some portion of the input, is encrypted prior to storing a media file. A decryption key must be provided when the media file is to be played back. If the key is not provided,... Agent: Marcia L. Doubet Law Firm

20080285752 - Apparatus and system for asymmetric security: An apparatus and system are disclosed for asymmetric security in data communications between two or more nodes. Asymmetric security within data communications refers to sending and receiving messages at different security levels. The apparatus includes a receiving module, a transmission module, and a communication module. The receiving module receives a... Agent: Kunzler & Mckenzie

20080285753 - System for passive scrambling and unscrambling of an optical signal: A system for passively scrambling and unscrambling a, pulse optical signal transmitted through a multi-mode optical fiber is provided. The system includes a scrambling unit connected between a signal receiving end of said transmission fiber and an optical signal source that includes an optical fiber which creates a differential delay... Agent: Corning Incorporated

20080285754 - Method, system and securing means for data archiving with automatic encryption and decryption by fragmentation of keys: In the method for data archiving with automatic en- and decryption data (9, 10) are exchanged between a client station (1) and an archive station (4). A securing means (2) connected between the stations (1, 4) encrypts the plain data (9) which are transmitted towards the archive station (4) and... Agent: Ohlandt, Greeley, Ruggiero & Perle, LLP

20080285755 - Method and device for accessing a sim card housed in a mobile terminal: The invention concerns a cryptographic device (6) comprising a terminal (1) and a mobile telephone (2) capable of exchanging data via a wireless link (5), said cryptographic device (6) being adapted to use public key cryptographic protocols with other cryptographic entities (4, 43), and the secret key of the cryptographic... Agent: Patterson, Thuente, Skaar & Christensen, P.A.

20080285756 - Random shared key: A key server is configured to execute on a computer. The key server is further configured to programmatically respond to a request by a sender by generating a message identifier connected with a message to be communicated and a random shared key for encrypting the message by the sender if... Agent: Christensen O'connor Johnson Kindness PLLC

20080285757 - Interoperable systems and methods for peer-to-peer service orchestration: Systems and methods are described for performing policy-managed, peer-to-peer service orchestration in a manner that supports the formation of self-organizing service networks that enable rich media experiences. In one embodiment, services are distributed across peer-to-peer communicating nodes, and each node provides message routing and orchestration using a message pump and... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080285759 - Method for data privacy in a fixed content distributed data storage: An archival storage cluster of preferably symmetric nodes includes a data privacy scheme that implements key management through secret sharing. In one embodiment, the protection scheme is implemented at install time. At install, an encryption key is generated, split, and the constituent pieces written to respective archive nodes. The key... Agent: Law Office Of David H. Judson

20080285758 - Refreshing software licenses: A license access agent is configured to execute on a client computer. The license access agent comprises a license manager configured to receive a software license upon a request for authorizing usage of a protected software product so as to allow one or more functionalities of the protected software product... Agent: Christensen O'connor Johnson Kindness PLLC

20080279368 - Low-latency method and apparatus of ghash operation for authenticated encryption galois counter mode: Disclosed is a low-latency method and apparatus of GHASH operation for authenticated encryption Galois Counter Mode (GCM), which simultaneously computes three interim values respectively yielded from the additional authenticated data A, the ciphertext C, and the hash key H defined in the GCM. Then, the output of the GHASH operation... Agent: Lin & Associates Intellectual Property, Inc.

20080279367 - Method and apparatus for providing ecryption/decrytpion using two sequences of numbers: A method encrypting data including selecting a pair of sequences based on a seed, performing a transposition of the data utilizing elements of a first one of the pair of sequences to produce a first transposition result, and performing a transposition of the first transposition result utilizing elements of a... Agent: Thorne & Halajian Applied Technology Center

20080279369 - System and method for n-dimensional encryption: A system and method is directed to providing an n-dimensional entity for encoding and storing data securely. A user provides a cursor position within the n-dimensional entity, and a user seed to a pseudo-random number generator. The user seed may be combined with a fingerprint of a computing system in... Agent: Darby & Darby P.C.

20080279370 - Methods and apparatus for generating a random number in one or more isolated processors: A system and method is disclosed which may include providing at least one processor with an integrally disposed random number generator (RNG) therein; entering a protected mode by said at least one processor; and generating a random number using said RNG in said at least one processor after entering said... Agent: Kaplan Gilman Gibson & Dernier L.L.P.

20080279371 - Methods of encrypting and decrypting data and bus system using the methods: Methods of encrypting and decrypting data, and a bus system using the methods are provided. The method of encrypting data includes: performing an operation on data that is to be transmitted through a bus with a key stream generated from a predetermined key so as to encrypt the data; transmitting... Agent: Sughrue Mion, PLLC

20080279372 - Secure distribution of content using decryption keys: For digital rights management (DRM) of e.g. digitally delivered music or video, a technique to make the decryption keys more secure. The technique fragments a message (song or video or other) into a number of portions, and uses a different decryption key for each portion. Each of the various keys... Agent: Apple C/o Mofo Nova

20080279373 - Method and system for electronically securing an electronic device using physically unclonable functions: The invention is directed to a system for securing an integrated circuit chip used in an electronic device by utilizing a circuit or other entity to produce physically unclonable functions (PUF) to generate a security word, such as an RSA public or private key. A PUF, according to its name... Agent: Stevens Law Group

20080279374 - Pixel-based method for encryption and decryption of data: A method for encrypting and decrypting data prevents counterfeiting or forgery of various on-line or off-line prints. A graphical image or text to be encrypted is fragmented into minute pixels as basic units. In connection with a shadow, a color, and a size of the fragmented pixels, a pixel having... Agent: The Rafferty Patent Law Firm

20080279375 - Service card adapter: An interface adapter device consistent with certain embodiments has a first electrical connector adapted to connect to a conditional access service card to receive encrypted television signals therefrom. A second electrical connector is adapted to connect to a television receiver device in order to provide the encrypted television signals to... Agent: Miller Patent Services

20080279376 - System, method, and service for performing unified broadcast encryption and traitor tracing for digital content: A unified broadcast encryption system divides a media key tree into S subtrees, divides digital content into segments, and converts some of the segments into variations; the number of segments and variations is q. The system subdivides each of the subtrees into q/|S| subdivided subtrees, assigns a key media variant... Agent: Shimokaji & Associates, P.C.

20080279377 - Method and system for scrambling media data in real time: A method for scrambling media data in real time solves the problems of heavy load on related devices and high requirements on their performance when multiple scrambling components scramble the same media data and scrambling associated data need be generated for each scrambling component in the related art. The method... Agent: Darby & Darby P.C.

20080279378 - Transmitting apparatus and receiving apparatus: A transmitter of the present invention includes: an encrypting unit operable to encrypt at least one of digital AV information and descriptor information relating to the digital AV information, and to generate encrypted information; a tool list generating unit operable to generate tool list information having a tool ID indicating... Agent: Greenblum & Bernstein, P.L.C

20080279379 - Conditional access video signal distribution: A video signal distribution system contains a video stream source (10) that produces a data stream with an encrypted video signal, control word information for decrypting the video signal and fee information indicative of fees for viewing respective parts of the video signal. A plurality of video reproduction apparatuses (12)... Agent: Schwegman, Lundberg & Woessner, P.A.

20080279380 - Information processing method, information processing device, computer program for achieving the information processing method, and computer-readable storage medium of storing the computer program: The present invention aims to provide the technique of appropriately enabling the encryption and decryption to the partial area with respect to the image data to which the partial encryption and the multiple encryptions have been applied. More specifically, the predetermined image area in the image data is acquired by... Agent: Fitzpatrick Cella Harper & Scinto

20080279381 - Secure messaging: Secure authentication and messaging for mobile online transactions are performed by a secure messaging platform. The secure messaging platform may include a token coupled to a mobile device, or a mobile device alone. The token enables secure access, and client and server protocols enable secure transactions using text/SMS messaging.... Agent: Lemoine Patent Services C/o Intellevate

20080279384 - Information delivery system, information delivery method, node device, key data management device, and recording medium: Provided is an information distribution system capable of acquiring the program information failed to be recorded, reliably and by a simple operation, without burdening a server device with heavy loads. The system includes plural node devices capable of communicating with each other through a network. The node device receiving the... Agent: Oliff & Berridge, PLC

20080279383 - Method and apparatus of enciphering and deciphering data using multiple keys: On a recording medium, first information obtained by enciphering data with the first key and second information obtained by enciphering the first key with each of the predetermined second keys are recorded. A deciphering method is characterized by comprising the steps of inputting the first and second information, deciphering the... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080279382 - Secure and scalable solid state disk system: A solid state disk system is disclosed. The system comprises a user token and at least one level secure virtual storage controller, coupled to the host system. The system includes a plurality of virtual storage devices coupled to at least one secure virtual storage controller. A system and method in... Agent: Sawyer Law Group LLP

20080279386 - Method and apparatus for encrypting media programs for later purchase and viewing: A system and method for storing and retrieving program material for subsequent replay is disclosed. The method includes accepting a receiver ID associated with a receiver key stored in a memory of the receiver, determining a pairing key for encrypting communications between the conditional access module and the receiver, encrypting... Agent: The Directv Group, Inc. Patent Docket Administration

20080279385 - Method and host device for using content using mobile card, and mobile card: Provided are a method and host device for using content using a mobile card, and a mobile card. The method includes storing an identifier (ID) of the mobile card, a global key, and a content key encrypted by a secret key of the mobile card, generating a combined key of... Agent: Sughrue Mion, PLLC

20080279387 - Propagating keys from servers to clients: A method for key distribution includes steps or acts of: deprecating a first key on a server; receiving a request from a client wherein the client request includes the deprecated key; verifying the client request by using the deprecated key provided in the client request to decrypt the client request;... Agent: Michael J. Buchenhorner

20080273694 - Combining interleaving with fixed-sequence windowing in an elliptic curve scalar multiplication: An Elliptic Curve scalar multiplication product involving a scalar and a base point is determined in a manner that acts as a countermeasure to side channel attacks. A key splitting strategy called Additive Splitting Using Division involves selecting a random integer and determining an integer quotient and a remainder by... Agent: Ridout & Maybee LLP

20080273693 - Efficient encoding processes and apparatus: A method for encoding video includes receiving data, and encrypting the data using at least four Huffman trees. A method for encoding video includes receiving data, and encrypting the data such that an internal state of a stream cipher is independent of plaintext and ciphertext. A video encoding system for... Agent: Amin, Turocy & Calvin, LLP

20080273695 - Method for elliptic curve scalar multiplication using parameterized projective coordinates: respectively; and (c) adding together K copies, K being a scalar, of the point P(X,Y) to obtain the scalar multiplication product KP. The scalar multiplication product is then converted from parameterized projective coordinates P(X,Y,Lx,Ly) to affine coordinates P(x,y). The method is optimized by restricting Ly so that Ly−Lx≧0 or, alternatively,... Agent: Litman Law Offices, Ltd.

20080273696 - Use of indirect data keys for encrypted tape cartridges: A method, system and program are provided for enabling selective access to multiple users' encrypted data in a single storage cartridge. A unique, derived key is generated for each user's data by performing cryptographic operations on a combination of a common base key and metadata related to the data to... Agent: Hamilton & Terrile, LLP IBM Tucson

20080273697 - Use of indirect data keys for encrypted tape cartridges: A method, system and program are provided for enabling selective access to multiple users' encrypted data in a single storage cartridge. A unique, derived key is generated for each user's data by performing cryptographic operations on a combination of a common base key and metadata related to the data to... Agent: Hamilton & Terrile, LLP IBM Tucson

20080273698 - Device for and a method of processing a data stream having a sequence of packets and timing information related to the packets: A device (3400) for processing an encrypted data stream (3401), wherein the device (3400) comprises a decrypting unit (3402) for generating a decrypted data stream (3403) from the encrypted data stream (3401), a detecting unit (3404) for detecting position information of at least one intra-coded frame in the decrypted data... Agent: Philips Intellectual Property & Standards

20080273699 - System for controlling the transmission of mass notifications: A system for authorizing the mass distribution of a digital message includes a CPU configured to prepare in digital form a message from an initiator, and to distribute the message to a plurality of recipients and/or recipient contact devices. The CPU is further configured to associate with the message data... Agent: Fulwider Patton LLP

20080273700 - Systems and methods for multicast retransmission over a secure wireless lan: Systems and methods for broadcast and multicast retransmissions within a protected wireless communications system are described. Retransmitted broadcast or multicast frames are designated by modification of fields or subfields in the MAC header of the frame which are constituent parts of the additional authentication data used to generate encryption keys.... Agent: Conexant Systems , Inc.

20080273702 - Method, system and program product for attaching a title key to encrypted content for synchronized transmission to a recipient: A method and system for attaching a title key to encrypted content for synchronized transmission to, or storage by, a recipient is provided. Specifically, under the present invention, an elementary media stream is parceled into content units that each include a content packet and a header. The content packets are... Agent: Hoffman Warnick LLC

20080273701 - Secure paper comprising a fiber layer and an electronic chip: m

20080273705 - Broadcasting method and broadcast receiver: A broadcasting method and a broadcast receiver whereby contents are first distributed only for storage so that the stored contents are later played back in a time period predetermined by the distributing party, the contents being encrypted for protection against unauthorized reproduction in any time period other than the intended... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20080273703 - Dual-gated qkd system for wdm networks: Systems and methods of incorporating a QKD system (Q) into a WDM network (2) are disclosed. The methods include electrically gating the single-photon detectors (SPDs) (30, 30′) as well as optically gating the SPDs with optical gates (28, 28′). The electronic gating width (TSPD) and the optical gating width (TOG)... Agent: OpticusIPLaw, PLLC

20080273704 - Method and apparatus for delivering keying information: A method of delivering an application key or keys to an application server for use in securing data exchanged between the application server and a user equipment, the user equipment accessing a communications network via an access domain. The method comprises running an Authentication and Key Agreement procedure between the... Agent: Ericsson Inc.

20080273706 - System and method for controlled access key management: Embodiments of the present invention provide controlled access to key management servers using store and forward protocols. A computer-implemented method for providing controlled key management includes generating a request indicative of a key management function. The request is received at the first of a number of intermediate parties capable of... Agent: Fish & Richardson P.C.