Cryptography inventions 02/08

20080049930 - Method and apparatus for encrypting data: A method and apparatus for encrypting data. The method includes assigning bits included in data units to a plurality of data blocks based on positions of the bits in the data units and encrypting the data blocks. The apparatus includes an assignment unit which assigns bits included in the data... Agent: Sughrue Mion, PLLC

20080049931 - Cryptographic methods including montgomery power ladder algorithms: A cryptographic method of countering differential fault analysis (DFA) using elliptic curve cryptography (ECC) fast Montgomery power ladder algorithm (MPLA) is provided. The cryptographic method may include receiving a basic point P on an elliptic curve and a scalar k, initializing a plurality of primary variables (P1 and P2) with... Agent: Harness, Dickey & Pierce, P.L.C

20080049932 - Key information update recording method and key information update recording apparatus: According to one embodiment, a limited-access object is encrypted using key information, such as Title Key File, to be updated. The encrypted object data is recorded onto a medium such as an optical disc or HDD. The key information update process, including the resetting and re-encryption of key information, and... Agent: Knobbe Martens Olson & Bear LLP

20080049935 - Content security layer providing long-term renewable security: In an exemplary embodiment, digital content is mastered as a combination of encrypted data and data processing operations that enable use in approved playback environments. Player devices having a processing environment compatible with the content's data processing operations are able to decrypt and play the content. Players can also provide... Agent: Marc P. Schuyler

20080049933 - Information recording medium: An information recording medium is provided with a recording information recording area (102) wherein recording information can be recorded, and an encrypting information recorded area (CDZ) wherein encrypting information (Key1) for encrypting the recording information is previously recorded. The encrypting information recorded area includes a special area (CDZa) having a... Agent: Young & Thompson

20080049934 - Management server device, content repoduction device, and recording medium: When a technique for specifying an unauthorized terminal based on a combination of watermarks embedded in content distributed without authorization is applied to content distributed on recording media, recording capacity limits of the recording media lead to a limit on the number of combinations of watermarks that can be embedded... Agent: Wenderoth, Lind & Ponack L.L.P.

20080049936 - Optical disc signal processing circuit: An optical disc signal processing circuit that includes a read data input unit configured to write read data into a buffer memory, the read data being subjected to a scramble process; an error correction processing unit configured to apply an error correction process to the read data read from the... Agent: Fish & Richardson P.C.

20080049937 - Secure message system with remote decryption service: Systems and methods for secure messaging are provided. A sender may encrypt content and send the encrypted content to a recipient over a communications network. The encrypted content may be decrypted for the recipient using a remote decryption service. Encrypted message content may be placed into a markup language form.... Agent: G. Victor Treyz

20080049939 - Mitigating dictionary attacks on password-protected local storage: The invention includes a method for key creation and recovery based on solutions to puzzles solvable by humans and not computers. In some exemplary embodiments, the key is created and recovered based on the solution(s) in conjunction with the password entered by the user. The puzzle(s) is selected based on... Agent: Cahn & Samuels, LLP

20080049938 - Systems and methods of ambiguity envelope encryption scheme and applications: Ambiguity Envelope (AE) security uses prior art encryption algorithms and prior art encryption keys and provides systems and methods for random-variant-keys that are used in place of the prior art encryption keys. In AE an ambiguity envelope is created over the transmission of data packets, so that no specific encryption... Agent: Tara Chand Singhal

20080049940 - Payment smart cards with hierarchical session key derivation providing security against differential power analysis and other attacks: Chip cards are used to secure credit and debit payment transactions. To prevent fraudulent transactions, the card must protect cryptographic keys used to authenticate transactions. In particular, cards should resist differential power analysis and/or other attacks. To address security risks posed by leakage of partial information about keys during cryptographic... Agent: Sonnenschein Nath & Rosenthal LLP

20080049941 - Method for providing personalized broadcasting service in communication system: A method for providing personalized broadcasting contents by a transmitting Mobile Station (MS) in a communication system is provided. The method includes sharing a group identifier (ID), which is authority to receive the personalized broadcasting contents, with a receiving MS in advance, transmitting a first message including the group ID... Agent: JeffersonIPLaw, LLP

20080049942 - System and method for secure key distribution to manufactured products: A system and method for securely distributing PKI data, such as one or more private keys or other confidential digital information, from a PKI data generation facility to a product in a product personalization facility that is not connected to the PKI data generation facility and is assumed to be... Agent: Motorola, Inc. Law Department

20080044013 - Koblitz exponentiation with bucketing: An implementation of a technology, described herein, for facilitating cryptographic systems and techniques. At least one implementation, described herein, maximizes the speed and security of fast exponentiation while minimizing its expense. At least one implementation, described herein, employs elliptic curves with a fast exponentiation technique so that it maximizes speed... Agent: Lee & Hayes PLLC

20080044012 - Reducing security protocol overhead in low data rate applications over a wireless link: A wireless communication module to provide security at a baseband layer is disclosed. A payload of plaintext may be divided into partitions. The module may use a block cipher such as the Advanced Encryption Standard (AES) algorithm to process a unique initiation vector (IV) for each partition so that each... Agent: Banner & Witcoff, Ltd.

20080044014 - Secure telemetric link: A communications protocol is used to provide data privacy, message integrity, message freshness, and user authentication to telemetric traffic, especially to and from implantable medical devices in a body area network. Encryption, message integrity, and message freshness are provided through use of token-like nonces and ephemeral session-keys derived from device... Agent: Medtronic, Inc.

20080044010 - Cryptographic system and method for encrypting input data: A cryptographic system and method for encrypting input data, in which an example system includes a table calculator configured to calculate table values composed of one of scalar multiplication values by Elliptic Curve (EC) operation, or exponentiation values by modular exponentiation operation, based on input data and the number of... Agent: Harness, Dickey & Pierce, P.L.C

20080044011 - Encryption method, cryptogram decoding method, encryptor, cryptogram decoder, transmission/reception system, and communication system: An encryption technique allowing use of classic Y-00 scheme performed using classic physical random numbers instead of quantum fluctuation in electrical communication and data storage in recording media, including a first modulation step for multilevel-modulating input data by associating with specific state pairs determined by physical random numbers, a second... Agent: Bingham Mccutchen LLP

20080044015 - System and method for digital image encoding: This invention relates generally to a method and apparatus, as implemented by a software program on a computer system, for producing digital encoded images. This method and system are capable of combining a source image with a latent image so that the latent image is viewable only through the use... Agent: Hunton & Williams LLP Intellectual Property Department

20080044016 - Detecting duplicate and near-duplicate files: Near-duplicate documents may be identified by processing an accepted set of documents to determine a first set of near-duplicate documents using a first technique, and processing the first set to determine a second set of near-duplicate documents using a second technique. The first technique might be token order dependent, and... Agent: Straub & Pokotylo

20080044017 - Copyright protection system, recording device, and reproduction device: A copyright protection system includes a recording device and a reproduction device. The recording device writes encrypted content, an encrypted content key for decrypting the encrypted content, and license information on a recording medium on which a unique media number has been recorded in an unrewritable state. The license information... Agent: Wenderoth, Lind & Ponack L.L.P.

20080044018 - Method and system to detect and prevent computer network intrusion: A method and system for detecting and preventing network intrusion by generating an intrusion signature formatted using an intrusion signature template, the signature for use with an intrusion engine that allows adding new and/or modifying existing intrusion signatures. A packet analysis engine samples packets on the network, analyzes the sampled... Agent: Hewlett Packard Company

20080044019 - Security module revocation method used for securing broadcasted messages: sending to each member of the same group as the security module to be revoked, with the exception of the security module(s) to be revoked, of a new private key corresponding to the public key of another group, each private key being encrypted by the personal key of said security... Agent: Harness, Dickey & Pierce, P.L.C

20080044020 - Integrated circuit with secure metadata store: A semiconductor integrated circuit for processing content data by encrypting or decrypting the data has one or more inputs to received content and metadata. A metadata store comprises two portions, a first portion for storing metadata itself and a second portion for storing an address of locations of bitfields of... Agent: Seed Intellectual Property Law Group PLLC

20080044021 - Image forming apparatus, image forming method and, computer readable medium and computer signal: An image forming apparatus comprises: an output part that outputs variable information varying in a time-dependent manner in the image forming apparatus; a first encrypt part that encrypts the variable information outputted from the output part using a first encrypt key read out from a memory; a second encrypt key... Agent: Morgan Lewis & Bockius LLP

20080044022 - Encryption device and method, and image forming apparatus: An encryption device which is capable of preparing an encrypted document not easily deciphered by a third person. The encryption device encrypts information formed on a recording member on the basis of a predetermined encryption code. A surface of the recording member is irradiated with light. An image of the... Agent: Rossi, Kimms & Mcdowell LLP.

20080044025 - Secure telemetric link: A communications protocol is used to provide data privacy, message integrity, message freshness, and user authentication to telemetric traffic, such as to and from implantable medical devices in a body area network. In certain embodiments, encryption, message integrity, and message freshness are provided through use of token-like nonces and ephemeral... Agent: Medtronic, Inc.

20080044024 - Apparatus and method for managing stations associated with wpa-psk wireless network: Provided are a method and apparatus for managing a station by providing an encrypted key to the station in a wireless network under a Wi-Fi Protected Pre-Shared Key (WPA-PSK) environment. In the method, a registrar determines whether a new station is a guest station, based on user input. If the... Agent: Sughrue Mion, PLLC

20080044023 - Secure data transmission: A system for transmitting secure data between a sender's terminal equipment and a recipient's terminal equipment over a network, and a corresponding method of use: the system comprising a sender's encryption server and a recipient's encryption server; each of the encryption servers comprise a data receiver, a decryptor, an encryptor... Agent: Fay Sharpe LLP

20080044026 - System and method for product registration: A system and method for controlling a production process for producing a product is provided in which overproduction may be inhibited by introducing a separation of duties within a production process. Typically a producer will contract out the various stages of a production process to multiple contractors. In general, separation... Agent: Ralph A. Dowell Of Dowell & Dowell P.C.

20080044028 - Pair-wise key pre-distribution method for wireless sensor network: The present invention provides a method regarding key deployment in wireless sensor networks, that is, with random anticipated disposition mechanism as basis, a key management mechanism is designed.... Agent: Bucknam And Archer

20080044027 - System and method of reliable foward secret key sharing with physical random functions: A secure solution is provided to the problem of secret key agreement. In particular, a method of reliable forward secret key sharing is disclosed between two legitimate correspondents whose profiles match sufficiently. The invention relies on a physical random function, sometimes referred to as a physical unclonable function (PUF) to... Agent: Philips Intellectual Property & Standards

20080044029 - System and method for pushing encrypted information between a host system and a mobile data communication device: A key distribution scheme for management of keys used for encryption of data items redirected between a messaging server and a mobile device associated with a user. An embodiment comprises one or more of the following: generating a first pair of keys by a redirector component associated with the messaging... Agent: Research In Motion, Ltd

20080044031 - Initiating contact using protected contact data in an electronic directory: A client application allows a user of a telecommunication device to retrieve contact data of a particular individual from a server to initiate contact with the particular individual without viewing content designated as private by the particular individual. The retrieved contact data includes encrypted content and non-encrypted content. The telecommunication... Agent: Senniger Powers (msft)

20080044030 - Protected contact data in an electronic directory: A sever application allows an administrator of a server to selectively designate contact data of a particular individual to be encrypted prior to storage in a shared electronic directory. The server application encrypts any designated content and stores the encrypted content in the shared electronic directory. The server application is... Agent: Senniger Powers (msft)

20080044032 - Method and system for providing personalized service mobility: A method for securely transporting personalized service policies from a trusted home SIP server to an un-trusted host server, through a hostile environment, such as the Internet, using identity-based encryption. A user is able to define an instance-based encryption seed for a public key to be used in encryption of... Agent: Borden Ladner Gervais LLP Anne Kinsman

20080037774 - Public key cryptography using matrices: The invention provides techniques for secure messages transmission using a public key system to exchange secret keys. A first entity creates public and private keys by generating a product n of two large, randomly chosen prime numbers, and then generating random matrices {A, C}, in the group GL(r,Zn) with a... Agent: Schwegman, Lundberg & Woessner, P.A.

20080037776 - Digital signature generation apparatus, digital signature verification apparatus, and key generation apparatus: A digital signature generation apparatus includes memory to store finite field Fq and section D(ux(s, t), uy(s, t), s, t) as secret key, section being one of surfaces of three-dimensional manifold A(x, y, s, t) which is expressed by x-coordinate, y-coordinate, parameter s, and parameter t and is defined on... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080037775 - Verifiable generation of weak symmetric keys for strong algorithms: The present invention provides a method, system, and device for producing cryptographic keys. More specifically, the cryptographic keys may be produced such that they have an effective key size and an apparent key size that differs from the effective key size. Generally, the effective key size is not restricted by... Agent: Sheridan Ross P.C.

20080037777 - System and method for providing encryption in pipelined storage operations in a storage network: In accordance with embodiments of the invention, a method is provided for performing a storage operation in a pipeline storage system in which one or more data streams containing data to be stored are written into data chunks. The method includes generating an encryption key associated with a first archive... Agent: Perkins Coie LLP Patent-sea

20080037778 - System, method and apparatus for providing ciphered and deciphered contents to user, and related computer readable medium: A set of users is divided into subsets, and a decipher key is generated for each subgroup by using different key generation polynomials. A session key, that is, a decipher key for ciphered data is distributed so as to be deciphered with the decipher key of each user. Decipher keys... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080037779 - Rechargeable battery pack and operating system: A method and system for authenticating a smart battery having a smart battery and an electronic device. Both the device and the smart battery generate encrypted random strings using key material based by A/D noise bits as a seed value. A pseudo random number is generated from the A/D noise... Agent: Harness, Dickey & Pierce, P.L.C

20080037780 - Content protection system and method: A content protection system including: a user interface for providing data modification parameters for protected and unprotected digital content, the protected digital content being encrypted; a software driver application for receiving the data modification parameters, processing the unprotected content in accordance with the modification parameters, and distributing the modification parameters... Agent: St. Onge Steward Johnston & Reens, LLC

20080037781 - Content security layer providing long-term renewable security: In an exemplary embodiment, digital content is mastered as a combination of encrypted data and data processing operations that enable use in approved playback environments. Player devices having a processing environment compatible with the content's data processing operations are able to decrypt and play the content. Players can also provide... Agent: Marc P. Schuyler

20080037782 - Reduction of channel change time for digital media devices using key management and virtual smart cards: A method, apparatus, and system are directed towards reducing a channel change time contribution related to security for digital media devices by using key management and a virtual smart card. In one embodiment, Entitlement Control Messages (ECMs) used to provide access to content keys for decrypting of content are provided... Agent: Darby & Darby P.C.

20080037783 - Device and method for providing video stream having integrity: Provided are a device and method for providing a video stream, in which a hash value of a frame is included in the header of a video stream, and authentication information about the header is inserted into the video stream, thus ensuring integrity against the forgery of the video stream.... Agent: Sughrue Mion, PLLC

20080037784 - Power line communication device and method of using the same: The repeater of the present invention communicates data signals over power lines. The repeater of one embodiment includes at least one modem that receives a data packet and attempts to decrypt the data packet with a first and/or second encryption key. If the packet is successfully decrypted using the first... Agent: Capital Legal Group, LLC

20080037785 - Constrained cryptographic keys: A constrained proxy key is used to secure communications between two devices via an intermediary device. A first proxy key is generated at a host device (key generator device) based on a shared secret key, one or more constraints on the first proxy key, and a key derivation function. At... Agent: Qualcomm Incorporated

20080037786 - Station and method of collecting information corresponding to security in a wireless network: A station and a method of collecting information corresponding to security. A wireless communicator transmits a request packet to search a wireless network to at least one external device and receives a response packet to the request packet. An authentication method determiner analyzes the response packet to search for at... Agent: Stanzione & Kim, LLP

20080037787 - Secure transport for mobile communication network: A communication network encrypts a first portion of a transaction associated with point-to-point communications using a point-to-point encryption key. A second portion of the transaction associated with end-to-end communications is encrypted using an end-to-end encryption key.... Agent: Stolowitz Ford Cowger LLP

20080037788 - Data decryption apparatus and data encryption apparatus: A data decryption apparatus that decrypts encrypted data, includes a first data-receiving unit that receives a first data set, in which information on an encryption specification is embedded, through a first communication path; a time-information obtaining unit that obtains time information on a reception of the first data set by... Agent: Staas & Halsey LLP

20080037789 - Document processing device, document reading device, and document processing method: A document storage unit 240 stores a document file to be encrypted. A document display unit 210 displays the contents of the document file on a screen. An encryption region specifying unit 214 allows a document editor to input data that specifies the region of the encryption target data in... Agent: Sughrue Mion, PLLC

20080037790 - Frame synchronization method for qkd systems: Systems and methods for exchanging and processing encoded quantum signals in quantum key distribution (QKD) systems in real time. A stream of quantum signals is sent from Alice to Bob. Alice only encodes sets or “frames” of the streamed quantum signals based on receiving a “ready” message from Bob. This... Agent: OpticusIPLaw, PLLC

20080037791 - Method and apparatus for evaluating actions performed on a client device: Disclosed is a method and apparatus for evaluating actions performed on a client device. For each of the performed actions, a current key is generated from a previous key and an associated action attestation value is generated from the previous key and information about each action (stored in a log... Agent: Law Office Of Jeffrey M. Weinick, LLC

20080037792 - Home network systems: A method and system for key management and distribution are disclosed. A network can comprise plurality of stations, each station is dedicated to a network device and is configured to plug into an electrical receptacle so as to facilitate network communications via home electrical wiring for the network device. A... Agent: Macpherson Kwok Chen & Heid LLP

20080037793 - System and method for distributed security: A security architecture in which a security module is integrated in a client machine, wherein the client machine includes a local host that is untrusted. The security module performs encryption and decryption algorithms, authentication, and public key processing. The security module also includes separate key caches for key encryption keys... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20080031443 - Apparatus for performing a fault detection operation and method thereof: An apparatus for performing a fault detection operation and methods thereof are provided. The example apparatus may include a first-coordinate computing unit receiving a first point and a second point in a binary finite field, the first and second points established based on a basic point within a given elliptic... Agent: Harness, Dickey & Pierce, P.L.C

20080031444 - Apparatus for performing a fault detection operation and method thereof: An apparatus for performing a fault detection operation and methods thereof are provided. The example apparatus may include a first-coordinate computing unit receiving a first point and a second point in a prime finite field, the first and second points established based on a basic point within a given elliptic... Agent: Harness, Dickey & Pierce, P.L.C

20080031446 - Information processing apparatus, data processing apparatus, and methods thereof: An object of this invention is to protect the right of a content holder without any necessity of a special storage medium incorporating a copyright protecting mechanism when the content holder does not coincide with a content creator. Information for encryption key generation is input. An encryption key is generated... Agent: Fitzpatrick Cella Harper & Scinto

20080031445 - Key binding method and applications capable of dynamic key generation: A key binding method capable of dynamic key generation includes the following steps: (a) dynamically generating key information for an identification-pending device; (b) transforming the key information into an image; and (c) transferring the key information to an object device through reading of the image. Applications of the method are... Agent: Greenblum & Bernstein, P.L.C

20080031447 - Systems and methods for aggregation of access to network products and services: The present invention is directed to a method and computer system for access aggregation comprising the storage and retrieval of website userids and passwords, and potentially other information, which is secure and convenient and automates access to the variety of websites of interest to users, and to the other information.... Agent: Frank Geshwind

20080031448 - Content distributing method, apparatus and system: The present invention provides a method of distributing content to a plurality of clients. The method on a server begins with accessing content to be distributed to a plurality of clients and identifying a first type of content to be distributed as crucial content and identifying a second type of... Agent: Fleit, Kain, Gibbons, Gutman, Bongini & Bianco P.l

20080031449 - Security device intended to be connected to a processing unit for an audio/video signal and process using such a device: The invention relates to a security device intended to be connected to a processing unit for an audio/video signal. This device comprises means to decrypt an audio/video stream, an interface of the ISO 7816 type and an interface of the USB type. It is characterised in that it includes a... Agent: Harness, Dickey & Pierce, P.L.C

20080031450 - Signal processor and signal processing method: Disclosed is a signal processor including a serial-to-parallel converter inputting serial digital video signals for n channels and converting the serial digital video signals for respective channels into parallel digital video signals. The signal processor further includes a frame-synchronization scrambler scrambling predetermined bits of the parallel digital video signals and... Agent: William S. Frommer, Esq. C/o Frommer Lawrence & Haug LLP

20080031451 - Method and system for security of data transmissions: The described embodiments relate generally to data processing systems and methods for encryption and decryption of a subscription-based data service, such as a satellite or cable television service. These aspects are generally based on use of an encryption key by the service provider to encode the data prior to transmission... Agent: Bereskin And Parr

20080031452 - Digital identification of unique game characteristics: Various techniques are disclosed for authenticating a first gaming application adapted for deployment at a first gaming machine that is operable to receive a wager on a game of chance. A first gaming application signature is accessed. In at least one embodiment, the first gaming application signature is associated with... Agent: Beyer Weaver LLP

20080031453 - Method and apparatus for decrypting a communication: A decryption apparatus (109) comprises a key stream generator (111) generating a local decryption key stream. It furthermore comprises a synchronisation value receiver (201) receiving key stream synchronisation values. A synchronisation processor (203) implements a state machine which may operate in a synchronised state (303) wherein the communication is decrypted... Agent: Motorola, Inc Intellectual Property Section

20080031454 - High throughput aes architecture: An advanced encryption system (AES) architecture includes a maximum parallel encryption module which implements one round of the AES algorithm in one clock cycle, and a maximum parallel key scheduling module which generates sub-keys in one clock cycle in parallel with the encryption module, thereby permitting feedback modes of operation... Agent: Dla Piper US LLP

20080031455 - Method, system, and computer program product for implementing pin-based data transfer activities: A method, system, and computer program product for implementing personal identification number (PIN)-based data transfer activities is provided. The system includes a transfer system that includes a processor and a PIN processing application and decryption engine executing thereon. The PIN processing application and decryption engine implement a method. The method... Agent: Cantor Colburn, LLP

20080031456 - Device with multiple one-time pads and method of managing such a device: A device is arranged to carry out security-related tasks using one-time pad data. The device has a memory for holding multiple one-time pads, each pad having a different security rating and being intended for use by the device in executing a task to that security rating. Provisioning of the pads... Agent: Hewlett Packard Company

20080031457 - Systems and methods using cryptography to protect secure computing environments: Secure computation environments are protected from bogus or rogue load modules, executables and other data elements through use of digital signatures, seals and certificates issued by a verifying authority. A verifying authority—which may be a trusted independent third party—tests the load modules or other executables to verify that their corresponding... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080031458 - System, methods, and apparatus for simplified encryption: Systems, methods, and apparatus for providing encryption presented. In some examples, a system for secure data transmission is provided that includes an encryption key server that is configured to provide a encryption key in response to a request from a client computer; the key server being further configured to provide... Agent: David P. Lentini

20080031459 - Systems and methods for identity-based secure communications: Methods and systems for securing communications between networked computer agents in a positively identifiable manner, using a centralized arbitration computer agent that acts as a trusted third party to store and manage user agent identities. Each user agent has a unique identity, which may be represented by at least a... Agent: Brian M. Dingman Mirick O'connell Demallie & Lougee LLP

20080031461 - Systems and methods using cryptography to protect secure computing environments: Secure computation environments are protected from bogus or rogue load modules, executables and other data elements through use of digital signatures, seals and certificates issued by a verifying authority. A verifying authority—which may be a trusted independent third party—tests the load modules or other executables to verify that their corresponding... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080031460 - Technique for split knowledge backup and recovery of a cryptographic key: In a secure cryptographic environment, a private key in a private/public key cryptographic scheme needs to be backed up and recovered in case of a loss or corruption of the private key. To back up the private key, multiple key segments are generated based on the private key which are... Agent: Kenyon & Kenyon LLP