Cryptography inventions

20080101595 - Error correction system and method for mobile terminal: An error correction system and method for a mobile terminal is provided that are capable of correcting transmission packet errors. The error correction method for a mobile communication system including at least one mobile terminal receiving ciphered text from a network includes generating an output by applying an input parameter... Agent: Cha & Reiter, LLC

20080101597 - Health integration platform protocol: A protocol is provided for communicating data between two applications. The protocol can support communication of an extensible markup language (XML) document over hypertext transfer protocol (HTTP) by associating the XML document with a data envelope and sending the data envelope to a disparate application. The data envelope can comprise... Agent: Amin. Turocy & Calvin, LLP

20080101596 - System and method for protecting data in a secure system: A system for protecting data in a security system generates and encodes a backup key for encoding long-lived secrets. The system generates a distribution plan for distributing cryptographic splits of the encoded backup key to selected persons based on geographic and organizational diversity. The distribution plan specifies a number M... Agent: Shimokaji & Associates, P.C.

20080101598 - Separating control and data operations to support secured data transfers: For a data transfer, security is negotiated via a control channel operating in accordance with a first protocol. The data is transmitted responsive to the security negotiation on a data channel operating in accordance with a second protocol.... Agent: Lee & Hayes PLLC

20080101601 - Method and apparatus for preparing and verifying documents: A method for preparing and verifying a document, comprising the steps of: presenting the document to a document-registering office in a machine-readable format; editing the document to add an identification code associated with a non-copiable object; signing the edited document using a private key of the document-registering office; printing the... Agent: Hewlett Packard Company

20080101599 - Apparatus for encrypting/decrypting real-time input stream: Disclosed is an apparatus for encrypting/decrypting a real-time input stream. The present invention includes a control unit, a key schedule unit, and a block round unit. Accordingly, the present invention realizes the encryption and decryption of AES algorithm in a manner of hardware, thereby enabling to carry out the encryption... Agent: Lee, Hong, Degerman, Kang & Schmadeka

20080101600 - Method for establishing a common key for a group of at least three subscribers: A method for establishing a common key for a group of at least three subscribers includes using a publicly known mathematical number group and a higher order element of the group g∈G. In the first step, a message corresponding to Ni: =gzi mod p is sent by each subscriber to... Agent: Darby & Darby P.C.

20080101602 - Protection of data on media recording disks: This invention discloses a secure recording medium having at least one of audio, video and software content, comprising a plurality of media recording disks (DVD's) with a disk security chip embedded in each the DVD, each the disk chip comprising a security key, wherein at least two of the DVD's... Agent: Ladas & Parry LLP

20080101603 - System and method for copy protection for digital signals: Embodiments of the present invention provide for the copy protection of distributed material after conditional access is applied, regardless of where the material is distributed. The solutions described provide the advantage of being sufficiently simple in implementation to qualify as “curb high” solutions. “Curb high” solutions provide a range of... Agent: Kenneth L. Sherman, Esq. Myers Dawes Andras & Sherman, LLP

20080101604 - Self-protecting digital content: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices... Agent: Marc P. Schuyler

20080101605 - Storage system provided with an encryption function: A first storage system is provided with a first storage device containing an encryption processing unit, and a controller having an encryption processing unit and an access control unit. The access control unit judges whether a writing destination in the case of having processed a write request from an upper-level... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080101606 - Transaction recordal system: A method of printing a security document having a security feature, the method including, receiving the security document, and encrypted identity data at least partially indicative of an identity of the security document. The identity is decrypting using a secret key associated with the public key, allowing a signature to... Agent: Silverbrook Research Pty Ltd

20080101607 - Streaming implementation of alphaeta physical layer encryption: A method of synchronizing the encryption/decryption functions of an AlphaEta physical-layer encryption or key generation system. The method includes the insertion of a header to indicate the start of encryption after clock-synchronization has been established. The method also allows for a side-channel to signal other useful information, such as a... Agent: Farhad Shir

20080101608 - Method and apparatus for handling protocol error in a wireless communications system: A method for handling protocol errors in a receiver of a wireless communications system includes receiving a ciphered PDU, deciphering the PDU, and triggering a reset procedure when at least one field of the PDU comprises an invalid value.... Agent: Birch Stewart Kolasch & Birch

20080101609 - Method and apparatus for handling protocol error in a wireless communications system: A method for handling protocol errors in a wireless communications system includes establishing a first signaling radio bearer and triggering an integrity protection procedure of the first signaling radio bearer, receiving a first message on the first signaling radio bearer, and neglecting the first message and initiating a synchronization procedure... Agent: Birch Stewart Kolasch & Birch

20080101611 - Key distribution in systems for selective access to information: A combination of stateless and state-full techniques enable reduced overall key management messages. A set of encryption keys is created based on a stateless subset cover scheme, where each user is associated with a leaf in the subset cover scheme. A state key and a corresponding state representing a subset... Agent: Ericsson Inc.

20080101610 - Systems and methods for management and auto-generation of encryption keys: Systems, methods and media for managing and generating encryption keys are disclosed. In one embodiment, a processor executes encryption key processing computer code to receive requests for keys from an application program. The processor determines whether the requesting application program executes on a node or server that is within the... Agent: Ibm Corporation (jss) C/o Schubert Osterrieder & Nickelson PLLC

20080101612 - Quantum key distribution protocol: A quantum key distribution protocol is provided that reduces the maximum value of the leaked information amount over the same distance when an adversary makes a photon number splitting attack more than the reduction by the BB84 protocol and the SARG protocol, by making use of the advantages of the... Agent: Kenyon & Kenyon LLP

20080101613 - Autonomous field reprogramming: The reprogramming system provides for field reprogramming of programmable devices. In particular, a key encryption system generates reprogramming components used to install reprogram data on programmable devices located in the field. The reprogramming component includes an encrypted access key file necessary to unlock the programmable device and reprogram software files... Agent: Thompson Hine L.L.P. Intellectual Property Group

20080101614 - Method and apparatus for providing secured content distribution: A method and apparatus for providing secured content distribution using a media hub is disclosed. In one embodiment, conditional access encrypted content is received at the media hub. The conditional access encrypted content is decrypted. The content is re-encrypted in accordance with a unique tier associated with the media hub... Agent: Motorola, Inc. Law Department

20080101615 - Certification of transactions: A method of production and distribution of asymetric public and private keys between a key generation centre and at least one user unit (DEC), the unit comprising a security module (SM), the method consisting in generating certificates comprising a public key and a private key in a first cryptographic unit... Agent: Woodard, Emhardt, Moriarty, Mcnett & Henry LLP

20080095359 - Security system for wireless networks: The invention relates to a device (21) for managing guest key records (6) in wireless home networks (1), comprising at least one interface (211) for connecting a guest key transmitter (GKT) (5), a key generator (212) and a transmission unit (213) for transmitting a generated key record (6) to the... Agent: Philips Intellectual Property & Standards

20080095361 - Security-enhanced key exchange: A unique identifier of a remote device is not sent in clear text on a local interlace between the remote device and a device that can communicate with a wireless network, but a procedure for establishing an encryption key in both devices is still based on the unique identifier. Thus,... Agent: Potomac Patent Group PLLC

20080095360 - Signature system and signature method: A signature system in which size of data to be transmitted is small and data can be processed efficiently in a Merkle signature system having high security. A processing part 112 of a smartcard 110 divides a message to be signed into groups of specific numbers of bits, starting from... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080095362 - Cryptographic key management in communication networks: An authentication server and a system and method for managing cryptographic keys across different combinations of user terminals, access networks, and core networks. A Transformation Coder Entity (TCE) creates a master key (Mk), which is used to derive keys during the authentication procedure. During handover between the different access types,... Agent: Ericsson Inc.

20080095357 - Cryptographic computation method, cryptographic system, and computer program: A system and method for achieving secure and fast computation in hyperelliptic cryptography is realized. Fast scalar multiplication is achieve by executing computing operations including halving as computing processing in scalar multiplication with respect to a divisor D in hyperelliptic curve cryptography. For example, computing operations including halving are executed... Agent: Bell, Boyd & Lloyd, LLP

20080095358 - Method and device for restoring degraded information: The present invention provides a technology which precisely restores a distribution of original information by carrying out an iterative calculation based on a distribution of degraded information and a transfer function including a phase characteristic of a transfer system. A method according to the present invention restores the original information... Agent: Oliff & Berridge, PLC

20080095363 - System and method for causing distortion in captured images: An image display system including an image generator configured to generate display information for at least four display primaries by applying distortion information to an input signal, where the distortion information configured to compensate for variations in human cone responses, and a display device including the at least four display... Agent: Hewlett Packard Company

20080095364 - Partial encryption: A multiple partial encryption device consistent with certain embodiments has an input for receiving a unencrypted video signal. An encryption arrangement produces a partially multiple encrypted video signal from the unencrypted video signal. An output provides the partially multiple encrypted video signal. This abstract is not to be considered limiting,... Agent: Miller Patent Services

20080095365 - Method and apparatus for supporting multiple broadcasters independently using a single conditional access system: A method and apparatus for brokering the enablement of the communication of encrypted media programs from a plurality of independent broadcasters to a plurality of receivers is disclosed. The system makes use of a pairing key for each provided service, which is differently encrypted by a pairing server and by... Agent: Gates & Cooper LLP Howard Hughes Center

20080095366 - Digital video receiver, ecm extract equipment, emm extract equipment, scramble key extract equipment, cci extract equipment, digital video receiving system, ecm extract method, emm extract method, scramble key extract method, cci extract method, digital v: A decryption process chip has a memory in which a first decryption control unit for decrypting a scramble key by using an ECM and an EMM is downloaded from outside and stored. A stream input unit extracts a packet including the ECM based on first information obtained from the first... Agent: Ratnerprestia

20080095367 - Methods and apparatus for confidentiality protection for fibre channel common transport: Methods and apparatus are provided for improving message-based security in a Fibre Channel network. More specifically, the present invention relates to methods and apparatus for providing confidentiality for Fibre Channel control messages encapsulated within Common Transport Information Units. Control messages transported with the Fibre Channel Common Transport protocol, and passed... Agent: Beyer Weaver LLP

20080095368 - Symmetric key generation apparatus and symmetric key generation method: Asymmetric key generation apparatus generates asymmetric key based on a different key material for each piece of data. The symmetric key generation apparatus is configured to generate a symmetric key of a practically different value for a key material of a different value. An encrypted piece of data has a... Agent: Staas & Halsey LLP

20080095369 - Method of configuring a node, related node and configuration server: y

20080095371 - Ends-messaging protocol that recovers and has backward security: The presented messaging protocol uses three new public keys in a signed and encrypted message to achieve backward security and recovery in an environment where an attacker now and then obtains the security parameters in exposed, decrypted form. Backward security is understood to mean that an adversary cannot decrypt those... Agent: Pentti Vataja

20080095370 - Method for securely extending key stream to encrypt high-entropy data: A stream stretcher is provided for securely expanding a key stream to match fee length of a data block to be encrypted and/or decrypted. A key stream is obtained having a length of LZ bits. A length LD corresponding, to a data block to be encrypted/decrypted is obtained, where LD>LZ.... Agent: Qualcomm Incorporated

20080095373 - Mobile terminal and gateway for remotely controlling data transfer from secure network: A data transfer system including mobile terminals and gateways for transferring data from a secure network to an external network under remote control using the mobile terminals. A first gateway produces and sends a first key to a second gateway through first and second mobile terminals. The second gateway produces... Agent: Staas & Halsey LLP

20080095372 - Playback apparatus and key management method: According to one embodiment, a playback apparatus includes a memory, a key deriving unit which derives first key information for decrypting the encrypted data, and a decrypting unit which decrypts the encrypted data by using the first key information derived by the key deriving unit. the key deriving unit produces... Agent: Knobbe Martens Olson & Bear LLP

20080095374 - Method and system for setting up a secure environment in wireless universal plug and play (upnp) networks: The invention describes a method of setting up a secure environment in wireless Universal Plug and Play (UPnP) networks, comprising a UPnP security console and UPnP controlled devices defined in the UPnP Device Security specification, wherein the entry of information concerning the UPnP security bootstrap as required in the UPnP... Agent: Philips Intellectual Property & Standards

20080095375 - Secret information management apparatus and secret information management system: In a secret information management system, a secret information management apparatus comprises a secret distribution unit which secretly distributes a data key k using a (k, n) threshold secret sharing scheme and creates n distributed keys B1, B2, . . . , Bn in the decryption of data D input... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080089515 - Apparatus and method for inter-program authentication using dynamically-generated public/private key pairs: In a multi-tiered computing environment, a first program may authenticate with a second program using dynamically-generated public/private key pairs. An authentication token is constructed that includes user information and information about the first program and the second program. The first program then digitally signs the authentication token using the dynamically-generated... Agent: Martin & Associates, LLC

20080089514 - Signature generation device, key generation device, and signature generation method: There is provided a signature generation apparatus capable of preventing transcript attack on signature data. The signature generation apparatus for generating signature data for message data (i) acquires, according to a predetermined acquisition method, a private key, which is different from a private key used in a previous digital signature... Agent: Wenderoth, Lind & Ponack L.L.P.

20080089516 - Method and apparatus for providing secure internet protocol media services: A method and apparatus for securely and remotely enabling the playing of a media program encrypted by a content encryption key over the Internet is disclosed. A license encryption key and a content decryption key are separately and securely transmitted to the receiver. The license encryption key is stored in... Agent: Gates & Cooper LLP Howard Hughes Center

20080089517 - Method and system for access control and data protection in digital memories, related digital memory and computer program product therefor: A digital memory such as a memory card for mobile communication equipment, is adapted to be accessed by a plurality of users and have protected data stored therein. The memory is dynamically partitionable in private memory areas for storing data therein and has associated therewith a secrecy tool for securely... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080089518 - Method and system for enhancing cryptographic capabilities of a wireless device using broadcasted random noise: A secret stream of bits begins by receiving a public random stream contained in a wireless communication signal at a transmit/receive unit. The public random stream is sampled and specific bits are extracted according to a shared common secret. These extracted bits are used to create a longer secret stream.... Agent: Volpe And Koenig, P.C. Dept. Icc

20080089519 - Secure key exchange algorithm for wireless protocols: A system for establishing encryption keys in a manner suitable for linking low complexity and/or power constrained wireless devices. The present invention uses a combination of encryption algorithms and events, possibly including user manual intervention, to create a randomized encryption key that is substantially more difficult for a third party... Agent: Morgan & Finnegan, L.L.P.

20080089520 - Methods and system for storing and retrieving identity mapping information: System and method for storing identity mapping information in an identity management system to enable a user authenticated at a first domain to access a second domain. The method may include digitally signing the identity mapping information by the user; providing the mapping information to an identity management system; and... Agent: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.

20080089521 - Universal secure messaging for cryptographic modules: An anonymous secure messaging method and system for securely exchanging information between a host computer system and a functionally connected cryptographic module. The invention comprises a Host Security Manager application in processing communications with a security executive program installed inside the cryptographic module. An SSL-like communications pathway is established between... Agent: Stevens, Davis, Miller & Mosher, L.L.P.

20080084996 - Authenticated encryption method and apparatus: An authenticated encryption method and apparatus are described in which plaintext data is encrypted, using a secret key, to form ciphertext data. A message authentication code, MAC, is also formed in dependence on a combination of the ciphertext data and data characteristic of the plaintext data. The ciphertext data and... Agent: Hewlett Packard Company

20080084995 - Method and system for variable and changing keys in a code encryption system: Methods and systems are disclosed for decrypting segmented code of varying segment lengths wherein each segment of code may be protected with a different set of decryption parameters. Sets of decryption parameter information may be embedded subsequent to and contiguous with corresponding code segments. Sets of decryption algorithm parameter information... Agent: Mcandrews Held & Malloy, Ltd

20080084997 - Computing endomorphism rings of abelian surfaces over finite fields: Computing endomorphism rings of Abelian surfaces over finite fields is described. In one aspect, an endomorphism ring of an Abelian surface over a finite field is probabilistically computed. A genus-two curve is generated based on the probabilistically determined endomorphism ring. The genus-2 curve is used for encryption and decryption operations... Agent: Lee & Hayes Pllc

20080084998 - Encryption key management device and encryption key management method: According to one embodiment, an encryption key management device comprises a means for applying encryption processing by a common key system to a first key by using a second key generated from a random seed and an input password to record the encrypted first common key on an information recording... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080085000 - Content selection for partial encryption: A method of selecting data for multiple carriage partial encryption consistent with certain embodiments involves examining unencrypted packets of data in a digital audio/video data stream to identify a packet type; and selecting packets of the identified packet type for multiple partial encryption, wherein the amount of data to be... Agent: Miller Patent Services

20080084999 - Encoders and image encoding methods: An encoder. A first encoding unit discrete cosine transforms an input frame, quantizes the transformation result, and generates a first frame according to a motion vector. The first encoding unit includes a first feedback unit dequantizing the transformation result, generating a processing signal and a first reconstruction signal according to... Agent: Birch Stewart Kolasch & Birch

20080085001 - Method of mutual authentication between a communication interface and a host processor of an nfc chipset: An authentication method between a secure host processor and a controller of an NFC system, the controller being equipped with an NFC interface circuit sending and receiving contactless data, includes connecting the host processor to the controller and checking that there is a predefined relation between a first secret data... Agent: Panitch Schwarze Belisario & Nadel LLP

20080085002 - Digital local network, notably digital home network, and method for creating and updating such a network: presentation devices (2, 3) for receiving the data flowing in the network and presenting them at a point of the network. The data flow in the network in encrypted form and all the devices of the network use a single key, the local key of the network, for the encryption... Agent: Joseph J. Laks Thomson Licensing Llc

20080085003 - Key production system: A key production system to determine a cryptographic key for a selected cryptoperiod being later than or equal to a cryptoperiod-A, and earlier than or equal to a different cryptoperiod-B, the system including a first receiver to receive a first key-component, associated with cryptoperiod-A, forming part of a first hash-chain... Agent: Welsh & Katz, Ltd

20080085004 - Cryptographic key management in a communication network: A communication network (22) includes a central node (30) loaded with a trusted key (26) and key material (56) corresponding to an asymmetric key agreement protocol (48). The network (22) further includes vulnerable nodes (32) loaded with key material (69) corresponding to the protocol (48). Successive secure connections (68, 70)... Agent: Meschkow & Gresham, P.L.C

20080085005 - Method and apparatus for broadcast encryption using bilinear map: A method and apparatus are provided for broadcast encryption using a bilinear map, defined on elliptic curves. The method for the broadcast encryption using the bilinear map includes generating a first random number for all nodes except for a plurality of leaf nodes of an a-ary tree structure, configured in... Agent: Roylance, Abrams, Berdo & Goodman, L.l.p.