Cryptography inventions

20090279688 - Closed galois field cryptographic system: A cryptographic system (CS) comprised of generators (502), (504), (510), an encryption device (ED), and a decryption device (DD). The generator (502) generates a data sequence (DS) including payload data. The generator (504) generates an encryption sequence (ES) including random numbers. The ED (506) is configured to perform a CGFC... Agent: Harris Corporation C/o Darby & Darby PC

20090279687 - Cryptographic operation processing circuit: A dummy operation instruction circuit (100) is provided for issuing a dummy operation instruction (113) to a cryptographic control circuit (101) instead of a CPU (109) or the like after being notified of execution of a cryptographic operation instruction (111) from the CPU (109) or the like. By causing operation... Agent: Mcdermott Will & Emery LLP

20090279690 - Cryptographic system including a mixed radix number generator with chosen statistical artifacts: A cryptographic system (1000) is provided. The cryptographic system includes a data stream receiving means (DSRM), a number generator (NG), a mixed radix accumulator (MRA) and an encryptor. The DSRM (1002) receives a data stream (DS). The NG (702) generates a first number sequence (FNS) contained within a Galois Field... Agent: Harris Corporation C/o Darby & Darby PC

20090279692 - Fast computation of one-way hash sequences: Some embodiments of the present invention provide a system that computes a target secret St in a sequence of secrets S0 . . . Sn. During operation, the system obtains k hash functions h1, . . . , hk, where h1 is known as the “lowest order hash function”, and... Agent: Pvf -- Sun Microsystems Inc. C/o Park, Vaughan & Fleming LLP

20090279693 - Method and a device for generating a pseudorandom string: The invention relates to a method of generating a pseudorandom string of terms belonging to a finite body K of cardinal q≧2 intended to be used in a cryptography procedure, said method comprising the iterative calculation of a system (Γ) of m polynomials with n variables belonging to the finite... Agent: Drinker Biddle & Reath LLP Attn: Patent Docket Dept.

20090279694 - Privacy-preserving scalar product calculation system, privacy-preserving scalar product calculation method and cryptographic key sharing system: A privacy-preserving scalar product calculation system is provided. A first unit linearly transforms an n-dimensional vector Va into an n-dimensional vector based on a scalar value based on a random number Wi and a random number Rj to calculate a remainder by dividing each element of the linearly transformed n-dimensional... Agent: Mcdermott Will & Emery LLP

20090279691 - Secure distribution of data or content using keyless transformation: A computer enabled method and apparatus for encrypting and decrypting data using a keyless transformation cryptographic technique. Data is protected using a keyless (unkeyed) complex mathematical transformation, in contrast to a traditional cryptographic algorithm using a secret key. This approach is resistant to both static analysis (hacking) performed on executable... Agent: Apple C/o Mofo Palo Alto

20090279689 - System and method of authentication: Disclosed herein are systems, methods and computer readable media for performing authentication. The proposed scheme utilizes new algorithms that introduce randomness using a physical value for authentication. An exemplary method includes sharing an initial state value S(0) with a sender and a receiver, generating a sender S(t, v) based on... Agent: Apple Inc. C/o Novak Druce + Quigg LLP

20090279695 - Arrangement for and method of protecting a data processing device against e[lectro] m[agnetic] radiation attacks: In order to further develop an arrangement for as well as a method of protecting at least one data processing device, in particular at least one embedded system, for example at least one chip card or smart card, against at least one attack, in particular against at least one E[lectro]M[agnetic]... Agent: Nxp, B.v. Nxp Intellectual Property & Licensing

20090279696 - System and method of performing authentication: Disclosed herein are systems, method and computer readable medium for providing authentication of an entity B by an entity A. In the method, entity A selects a value p, a range [a, b] and a granularity epsilon. Entity A sends p, [a, b], and epsilon to entity B. Entity B... Agent: Apple Inc. C/o Novak Druce + Quigg LLP

20090279697 - Ciphertext key chaining: Some embodiments of a method and apparatus for encrypting and decrypting data have been presented. In one embodiment, a current key is generated from a prior ciphertext block and another key, which may include a prior key used to encipher the prior ciphertext block or an initialization vector. Then a... Agent: Red Hat/bstz Blakely Sokoloff Taylor & Zafman LLP

20090279698 - Hub device for a network comprising quantum cryptographic connections and node module for said hub device: The invention relates to a node device (21) for a network (20) comprising quantum cryptographic connections (1) provided with quantum channels (4) and public channels (5), comprising quantum optics means (11) for connecting to the respective quantum channels, for generating secrets or keys by means of quantum cryptography, comprising means... Agent: Fulbright & Jaworski L.L.P.

20090279699 - Software defined radio device, and method for renewing software, and software defined radio system: A software defined radio device and a download server store a plurality of common keys in common key data. The download server arbitrarily determines a common key from the common key data and conveys information identifying the common key to be used to the software defined radio device. An authenticator... Agent: Nec Corporation Of America

20090279701 - Controlling access nodes with network transport devices within wireless mobile networks: A network controls provision of access functionality by an access node to provide a network service to a subscriber device. For example, the network device may control the queuing and forwarding of packets by the access node to facilitate packet transmission according to, for example, a Quality of Service class.... Agent: Shumaker & Sieffert, P.a

20090279700 - Information-theoretically secure secrecy generation: A method and apparatus are provided for performing information-theoretically secure cryptography using joint randomness not shared by others. Two valid communicating entities independently generate samples of a shared source that is not available to an illegitimate entity. The shared source may be a satellite signal, and each legitimate entity may... Agent: Volpe And Koenig, P.C. Dept. Icc

20090279702 - Image processing apparatus and control method thereof: An image processing apparatus, to which a portable storage medium can be electrically connected, includes a generation unit configured to generate a pair of a public key and a private key, a medium detection unit configured to detect that the portable storage medium is connected to the image processing apparatus,... Agent: Canon U.s.a. Inc. Intellectual Property Division

20090279705 - Method and system for distributing key of media stream: A method and a system for distributing key of media stream are provided. The method comprises: determining, by a security management server, whether a domain to which the calling terminal belongs and a domain to which a called terminal belongs subscribe a key distribution protocol; generating a key based on... Agent: Huawei Technologies Co., Ltd. C/o Darby & Darby P.C.

20090279704 - Mobile internet protocol system and method for updating home agent root key: A MIP system and a method for updating an HA-RK are disclosed. The AAA server generates and delivers a new HA-RK before expiry of the old HA-RK, thus eliminating the time gap between expiry of the old HA-RK and obtaining of the new HA-RK and making the MIP registration seamless.... Agent: Huawei Technologies Co., Ltd. C/o Darby & Darby P.C.

20090279703 - Secure shell used to open a user's encrypted file system keystore: The present invention provides a computer implemented method, apparatus, and data processing system for associating a private part of a keystore of a user with a user authentication process in an encrypting file system. A secure shell daemon server establishes the user authentication process with a secure shell client such... Agent: Ibm Corp. (aus/rcr) C/o The Rolnik Law Firm, P.C.

20090274294 - Data compression apparatus and data decompression apparatus: In a first data compression process, a compressed code of an input symbol is generated in accordance with a compression dictionary selected on the basis of P symbols immediately preceding the input symbol, and a (P+1)K+1-th compressed code is encrypted to generate a compressed and encrypted code. Then, compressed and... Agent: Staas & Halsey LLP

20090274295 - Configurable encryption/decryption for multiple services support: A system to transmit a set of programs from a transmitter to a receiver is used to accommodate different levels of security used for each program. When a high level of security is necessary for transmitting or receiving a program the transmitter and/or receiver is operable to accommodate that level... Agent: Motorola, Inc. Law Department

20090274296 - Digital content decrypting apparatus and operating method thereof: A device and method for decrypting digital contents are discussed. According to an embodiment, a method for decrypting digital content at a target device, includes receiving the digital content without a source encryption key from a source device connected to the target device, the digital content having been encrypted with... Agent: Birch Stewart Kolasch & Birch

20090274297 - Digital content decrypting apparatus and operating method thereof: A device and method for decrypting re-encrypted digital contents are discussed. According to an embodiment, the method includes receiving the re-encrypted digital content without a source encryption key from a source device connected to the target device, wherein the re-encrypted digital content is generated at the source device by: 1)... Agent: Birch Stewart Kolasch & Birch

20090274298 - Method for producing a security feature on a flat substrate: A security feature is produced on a flat substrate, e.g. on paper or board. Particles—forming a cryptographic random pattern—are applied, preferably scattered on, to the substrate or incorporated into the substrate. Flexible pieces of wire or fiber, in particular thin pieces of copper wire, are applied to or incorporated into... Agent: Lerner Greenberg Stemer LLP

20090274300 - Method for configuring the encryption policy for a fibre channel device: A data encryption engine and method for using to selectively encrypt communications. Data is received from a source device into the data encryption engine. The data encryption engine determines whether or not to encrypt the data based on a source device preference, a target device preference, a comparison of priority... Agent: SprinkleIPLaw Group

20090274299 - Open architecture based domain dependent real time multi-lingual communication service: A system and method for real-time network communications provides a session identifier as a public key for group communication between clients, and provides a channel identifier representing a private key for each of a plurality of clients. The channel identifier includes client-specific attributes, which function to indicate grouping criteria for... Agent: Keusey, Tutunjian & Bitetto, P.C.

20090274301 - Validation of stored or incoming messages: A mobile device can save time by validating a stored message, which was previously unreadable, by utilizing a related message, which can be received at a much quicker rate. In accordance with some aspects, the mobile device can save time by validating the stored message by reading a new related... Agent: Qualcomm Incorporated

20090274302 - Method for deriving traffic encryption key: A mobile station is provided. The mobile station includes one or more radio transceiver module and a processor. The processor performs a handover negotiation procedure with a serving base station so as to handover communication services to a target base station by transmitting and receiving a plurality of handover negotiation... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20090274303 - Token provisioning: A method for provisioning a device such as a token. The device issues a certificate request to a Certification Authority. The request includes a public cryptographic key uniquely associated with the device. The Certification Authority generates a symmetric cryptographic key for the device, encrypts it using the public key, and... Agent: Townsend And Townsend And Crew, LLP

20090274304 - License management apparatus and method and license management system: When a function inactivation process is instructed on an MFP A, all the functions are inactivated and a function inactivation certification key is issued, and then resources related to the functions are transmitted to an MFP-B. When reception of the resources is completed on the MFP-B, a function duplication completion... Agent: Rossi, Kimms & Mcdowell LLP.

20090274305 - Method and apparatus for transmitting content key: Provided is a method of transmitting content keys to nodes arranged in a hierarchical structure which includes a plurality of node groups each including a predetermined number of the nodes. In this method, revoke information that includes identifiers of revoked node groups in the hierarchical structure, the total number of... Agent: Sughrue Mion, PLLC

20090274306 - Method for key administration for cryptography modules: The invention relates to a method for a central key station (SS), for setting a new key (nK) in a cryptography module (KM) without a public key being stored in the cryptography module (KM), the authenticity of the new key (nK) being secured by a protocol. According to said method,... Agent: Harness, Dickey & Pierce, P.L.C

20090262925 - Method for designing a secure hash function and a system thereof: A system and method for designing a secure hash function is provided. Both of which have been designed for secure hash functionality, Secure Hash Algorithm (SHA-3) using pre processing (MP) methods and to help reduce hash collisions. It is a one way hash function which is a combination of message... Agent: Hedman & Costigan P.C.

20090262926 - Method and apparatus for generating a cryptographic key: In embodiments methods and circuits for generating a cryptographic key, for encrypting and decrypting data with the generated key, for storing and reading the encrypted data using a filename unknown to a running application of a mobile computer application are provided.... Agent: Dickstein Shapiro LLP

20090262927 - Image forming apparatus, and control method thereof: An image forming apparatus of the invention includes a key generating unit to change an encryption key and to generate an encryption key different from the previous encryption key at each time of change, an encryption unit to encrypt image data using the encryption key generated by the key generating... Agent: Turocy & Watson, LLP

20090262928 - Method and apparatus for seeding a cryptographic random number generator: The invention relates to a method and an apparatus for seeding cryptographic random number generators. For seeding a cryptographic random number generator, an image is used. Pixels of the inputted image are selected, each of which is provided with associated position and color information. That position and color information associated... Agent: Fish & Richardson P.C.

20090262929 - Method for secure storage of plural keys in device: A method for securely storing a plurality of keys in a device. The method comprises assigning the device with a random number, the random number being substantially unique to the device; generating an encryption key for encrypting each of the plurality of keys, the encryption key being generated by applying... Agent: Silverbrook Research Pty Ltd

20090262930 - Method for strengthening the implementation of ecdsa against power analysis: A method of inhibiting the disclosure of confidential information through power analysis attacks on processors in cryptographic systems. The method masks a cryptographic operation using a generator G. A secret value, which may be combined with the generator G to form a secret generator is generated. The secret value is... Agent: Blake, Cassels & Graydon LLP

20090262931 - Device, method, and program for image encryption/decryption: In order to encrypt a part of an input image in such a manner that the encrypted part can be located for decryption, means for regularly converting pixel values in the area to be encrypted and generating a pattern unique to the pixel value conversion in order to encrypt the... Agent: Staas & Halsey LLP

20090262933 - Digital content encrypting apparatus and operating method thereof: The invention is directed to a source device and a method for encrypting digital contents at the source device. According to an embodiment, the method includes performing an addition operation by using a first source internal key and an identifier (ID), the first source internal key being associated with the... Agent: Birch Stewart Kolasch & Birch

20090262934 - Digital content encrypting apparatus and operating method thereof: The invention is directed to a source device and a method for encrypting digital content at the source device. According to an embodiment, the method includes authenticating a target device connected to the source device using an identifier (ID) associated with at least one of the target device and a... Agent: Birch Stewart Kolasch & Birch

20090262935 - Digital content encrypting apparatus and operating method thereof: The invention is directed to a source device and a method for encrypting digital contents at the source device. According to an embodiment, the method includes performing a first addition operation by using a first source internal key and an identifier (ID), the first source internal key being associated with... Agent: Birch Stewart Kolasch & Birch

20090262936 - Digital content encrypting apparatus and operating method thereof: The invention is directed to a source device and a method for encrypting digital contents at the source device. According to an embodiment, the method includes receiving digital content from an external device, the digital content being encrypted using a first encryption algorithm in the external device; decrypting the received... Agent: Birch Stewart Kolasch & Birch

20090262932 - Embedding and extraction of information from an embedded content using replica modulation: Apparatus and methods are provided for embedding or embedding digital data into an analog host or cover signal. A distributed signal feature of the cover signal in a particular domain (time, frequency or space) is calculated and compared with a set of predefined quantization values corresponding to an information symbol... Agent: Foley & Lardner LLP

20090262937 - Method and apparatus for data privacy in passive optical networks: One embodiment provides a system for decrypting data frames in an Ethernet passive optical network (EPON). During operation, the system maintains a local cipher counter at a local node, and receives from a remote node a data frame which is encrypted based on a remote input block and a session... Agent: Park, Vaughan & Fleming LLP

20090262939 - Authentication apparatus, system and method: An authentication apparatus includes a communication module, a storage module, a processing module and an authentication module. The communication module, based on a wireless communication protocol, establishes a communication link with an electronic apparatus. The storage module stores a plurality of encryption logics and a plurality of authentication logics corresponding... Agent: Wpat, PC

20090262938 - Method for encrypting and decrypting wireless signals and apparatus thereof: An apparatus for encrypting wireless signals comprises an encryption engine, a transmit packet buffer and a transmit control logic. The encryption engine encrypts the wireless signals. The transmit packet buffer stores the encrypted wireless signals. The transmit control logic forwards the encrypted wireless signal from the transmit packet buffer to... Agent: Wpat, PC Intellectual Property Attorneys

20090262940 - Memory controller and memory device including the memory controller: A memory controller includes a security key and parameter storage unit and a security engine. The security key and parameter storage unit stores at least one security key and at least one parameter that are used during encryption or decryption. The security engine receives encrypted data stored in an external... Agent: F. Chau & Associates, LLC

20090262941 - Techniques for managing keys using a key server in a network segment: The election of a key server is provided. The key server is a single device that broadcasts an encryption key to other devices in a network segment. Also, automatic reelection of a new key server is provided when a current key server becomes unavailable. Key receivers may separately detect that... Agent: Trellis Intellectual Property Law Group, PC

20090262942 - Method and system for managing shared random numbers in secret communication network: A method for managing shared random numbers in a secret communication network including at least one center node and a plurality of remote nodes connected to the center node, includes: sharing random number sequences between the center node and respective ones of the plurality of remote nodes; when performing random... Agent: Mcginn Intellectual Property Law Group, PLLC

20090262943 - Key derivation functions to enhance security: Key derivation algorithms are disclosed. In one key derivation application, a segment of the master key is hashed. Two numbers of derived from another segment of the master key. A universal hash function, using the two numbers, is applied to the result of the hash, from which bits are selected... Agent: Marger Johnson & Mccollom, P.C.

20090262944 - Scrambling of data and reference symbols: The invention relates to a method for scrambling a sequence of symbols comprising at least two reference symbols (R1, R2) and at least one first data symbol (D), said method comprising obtaining a first reference symbol (R1) and a second reference symbol (R2), determining a first scrambling symbol (S1) corresponding... Agent: Dickinson Wright PLLC James E. Ledbetter, Esq.