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Cryptography April category listing, related patent applications 04/11

20110096923 - Block cipher: Derivation of the internal state of the method from the key, pseudorandom permutation of plaintext bits or groups of plaintext bits, partitioning of outsized plaintext data blocks, execution of at least three unbalanced Feistel network rounds with round functions having the ability to output results with variable length and bit-by-bit... Agent:

20110096922 - Image processing apparatus and image processing method: An object detection unit of a network camera detects an object including a human figure from image data. An event detection unit analyzes the image data based on a result of the object detection by the object detection unit. Based on a result of the image data analysis, an event... Agent: Canon Kabushiki Kaisha

20110096924 - Antipiracy key segmentation for hfc multicast distribution from master headend to cable hubs: A method of segregating a hybrid fiber cable network involves assigning a packet identifier (PID) to each of a plurality of hubs on the hybrid fiber cable network; assigning a distinct decryption method to each of the plurality of hubs, so that each of the plurality of hubs is identifiable... Agent:

20110096925 - Optical fiber secure communication apparatus and data encrption method therefor: An optical fiber secure communication apparatus and a data encryption method therefor are provided. The apparatus comprises a transmitter and a receiver being connected with each other via an optical fiber. The transmitter comprises a PPC processor unit, a field programmable gate array test board, a light-emitting module, an optical... Agent: Institute Of Semiconductors, Chinese Academy Of Sciences

20110096926 - Techniques for data encryption and decryption: Techniques for securing data access are presented. A sender encrypts data into a first integer value. A first knot is selected along with first and second keys. The first knot, first integer value, first key, and second key are used to produce a final knot. The final knot is transmitted... Agent:

20110096927 - Method and apparatus for updating an authorization key in a communication system: Provided is an apparatus and method for updating an Authorization Key (AK) of a mobile station in an idle mode in a wireless communication system. A method for operating a mobile station in an idle mode to update an AK in a wireless communication system includes transmitting a first location... Agent: Samsung Electronics Co., Ltd.

20110096928 - Wireless communication base station device, wireless communication mobile station device, and method for scrambling response signal in arq: A wireless communication base station device which does not fail in ARQ control even when a mobile station fails to receive allocation information and collision of the uplink data transmitted from mobile stations occurs. In the device, a CRC unit (123) detects an error, if any, in the decoded uplink... Agent: Panasonic Corporation

20110096929 - Encryption key distribution method in mobile broadcasting system, and system for the same: An encryption key distribution method for service and content protection in a mobile broadcasting system, and a system for the same which includes generating, by a network, a first encryption key when the broadcast service is first provided; transmitting a generalized rights object message, which includes identification information for identifying... Agent: Samsung Electronics Co., Ltd.

20110096930 - Method of storing secret information in distributed device: A method of storing a function result of a secret key in memory of a device for distribution is provided. The method involves applying a first, one way function to a random number stored in the memory of the device, thereby generating a first result, applying a second function to... Agent: Silverbrook Research Pty Ltd

20110091033 - Cryptographic system: A method of creating an encryption system for encrypting a plurality of plaintext words is provided. The method comprises associating (104) respective plaintext words (202) with respective sets (207) of error positions (212) of an error vector, and associating (106) respective values of at least one of the plaintext words... Agent: Irdeto B.v.

20110091032 - Method and apparatus for information reproduction: According to one embodiment, a content recording apparatus including, a key preparing section configured to prepare a key to encrypt an acquired stream, a file preparing section configured to add identification information to the acquired stream to prepare a file, a hash calculating section configured to calculate a hash value... Agent: Kabushiki Kaisha Toshiba

20110091034 - Secure method for cryptographic computation and corresponding electronic component: The secure method for cryptographic computation comprises processing of an input datum (D) by a cryptographic computation tool involving at least one encryption key (K) and at least one generated item of secret information, so as to provide an output datum (DC). The generation of the said at least one... Agent: Stmicroelectronics (rousset) Sas

20110091035 - Hardware kasumi cypher with hybrid software interface: A system including a memory; a software interface, operatively connected to the memory, and configured to generate a modified version of a confidentially key (CKey), and a modified version of an integrity key (IKey); and a Kasumi engine having a hardware implementation of a Kasumi cipher and configured to load... Agent: Sun Microsystems, Inc.

20110091036 - Cryptographic key generation: A technique for generating a cryptographic key (120) is provided. The technique is particularly useful for protecting the communication between two entities (202, 302; 204, 304) cooperatively running a distributed security operation. The technique comprises providing at least two parameters (106, 108), the first parameter (106) comprising or deriving from... Agent: Telefonaktiebolaget Lm Ericsson (publ)

20110091037 - Content protection key encryptor for security providers: Techniques are provided to receive at an encryption device from a control device an encryption request comprising a message and an identifier for a device. The control device and the device are associated with a security provider that provides secure content to the device using the message encrypted with a... Agent: Cisco Technology, Inc.

20110091038 - System of providing a fixed identification of a transponder while keeping privacy and avoiding tracking: Transponder (180) having stored a fixed identification number, which expands said identification number with a random number, encrypts said expanded number with a key, and sends it to a reader (160) on its request. Reader (160), which on request receives an encrypted number from a transponder (180), decrypts a received... Agent: Nxp B.v.

20110091039 - Releasing a service on an electronic appliance: There is proposed a method for enabling a service made available by an electronic device (100), wherein a registration request (114) is generated (S3) by the device (100) and sent (S7) to the registration server (300). The registration server (300) thereupon generates (S8) a registration confirmation (305) and sends (S9)... Agent:

20110091040 - Method for personalizing a safety element of a mobile terminal device: The invention relates to a method for personalizing a security element (SE) of a mobile end device (EG), in particular in the form of a smart card chip of a communication end device. The invention comprises the pre-personalizing of the security element (SE) within the framework of its production process... Agent:

20110091041 - Method and apparatus for processing rights object: A method and apparatus for processing a Rights Object (RO) are provided. A method for upgrading the RO includes: acquiring, by a Digital Rights Management (DRM) Agent, RO related information of the RO that requires updating from a Secure Removable Media (SRM) Agent; providing, by the DRM Agent, the RO... Agent:

20110085657 - Data encryption to provide data security and memory cell bit wear leveling: Method and apparatus for encrypting and storing data to provide data security and memory cell bit wear leveling. In accordance with various embodiments, input data are provided for writing to a target page of memory in a storage array. A seed value is derived from a count value indicative of... Agent: Seagate Technology LLC

20110085658 - System and method for comparison of private values: An embodiment includes a first system for computing a contribution to a greater-than comparison of a first private value and a second private value. The first system includes: an accessing unit configured to access the first private value; a processor unit configured to compute a first encrypted value by encrypting... Agent: Sap Ag

20110085660 - Aes algorithm-based encryption apparatus and method for mobile communication system: A method and apparatus for improving hardware flexibility for encrypting data based on the Advanced Encryption Standard (AES) block algorithm is provided. An encryption apparatus is equipped with a shared logic including a mode detector which detects a current AES mode performed by an AES block algorithm, a shared hardware... Agent: Samsung Electronics Co., Ltd.

20110085659 - Method and apparatus for generating a signature for a message and method and apparatus for verifying such a signature: A method of generating a signature σ for a message m, the method enabling online/offline signatures. Two random primes p and q are generated, with N=pq; two random quadratic residues g and x are chosen in Z*N, and, for an integer z, h=g−z mod N is calculated. This gives the... Agent: Thomson Licensing LLC

20110085661 - Content receiving terminal, content reproducing terminal, content write-out method, and program: During the export processing for the video content (S107), the content receiving terminal causes an encryption key for content stored in the recording medium, to be present in the content receiving terminal (S103, S105, and S106). Only when the export processing is completed or when suspension processing is normally performed,... Agent:

20110085662 - High utilization universal logic array with variable circuit topology and logistic map circuit to realize a variety of logic gates with constant power signatures: Disclosed is a novel circuit able to generate any logic combination possible as a function of the input logic signals. The circuit is described as a 2 input logistic map circuit but may be expanded to 3 or more inputs as required. Further disclosed is a universal logic array with... Agent: Chaologix, Inc.

20110085663 - Method for the access-related or communication-related random encryption and decryption of data: A method is provided for encryption and decryption of data of any kind, in which data are encrypted and decrypted using a random key, for ensuring the integrity and/or authenticity thereof, and/or for keeping secret the data contents. At the location of encryption, at least one permutation data element, one... Agent: Fachhochschule Schmalkalden

20110085664 - Systems and methods for managing multiple keys for file encryption and decryption: Systems and methods for managing multiple keys for file encryption and decryption may provide an encrypted list of previously used keys. The list itself may be encrypted using a current key. To decrypt files that are encrypted in one or more of the previous keys, the list can be decrypted,... Agent: Microsoft Corporation

20110085665 - Method for generating dynamic group key: A method of generating a dynamic group key of a group formed of a plurality of nodes, the method including: unicasting a public key that is based on respective secret keys of each of a plurality of general nodes excluding a master node, which is one of the plurality of... Agent: Ajou University Industry Cooperation Foundation

20110085666 - Quantum key device: The present invention relates to an improved quantum key device for use in quantum key distribution, which device comprises a quantum detector unit for detecting a quantum signal and a plurality of logic units operably connected to the quantum detector unit wherein each logic unit is arranged to derive a... Agent: Qinetiq Limited

20110085667 - Various methods and apparatuses for securing an application container: A method, apparatus, and system for securing internet applications including a first internet application hosted on a source server and stored on a physical storage medium of the source server. The internet application is served across a network onto a client machine and contains code scripted to temporarily install on... Agent: Adgregate Markets, Inc.

20110081015 - Encryption system and method: An encryption system can include a first port and a second port. A format translator can be coupled to the first port and the second port to translate a first header format of data received from the first port to a second header format of the second port. The format... Agent:

20110081016 - Secure data communication using elliptic curve cryptology: A contactless device including an contactless communication interface configured to receive a challenge from a contactless reader and a controller configured to generate an enciphered response using elliptic curve cryptology. Moreover, the enciphered response includes the challenge enciphered with a private key stored in non-volatile memory of the contactless device... Agent: Infineon Technologies Ag

20110081017 - Key migration device: Provided is a key migration device which can securely and reliably control the migration of keys. A migration authority (101) fetches a generation level which is the security level of a first electronic terminal (3011) and an output destination level which is the security level of a third electronic terminal... Agent:

20110081018 - Obfuscating reception of communiqué affiliated with a source entity: A computationally implemented method includes, but is not limited to: receiving a communiqué that is affiliated with a source entity and that is directed to a receiving user; and presenting, in lieu of presenting indication of reception of the communiqué, a covert indicator that covertly indicates reception of the communiqué,... Agent: Searete LLC, A Limited Liability Corporation Of The State Of Delaware

20110081019 - Compressed data scrambled distribution device and playback device thereof: A scrambling section scrambles compressed data by unique one of a plurality of scrambling methods. A hash value calculating section determines a hash value based on data b in a position where digital watermark data is not embedded, and an encrypting section encrypts the hash value with a secret key... Agent: Kddi Corporation

20110081020 - Terrestial-signal based exclusion zone compliance: An exclusion zone compliance circuit comprises a terrestrial radio signal reception component for receiving a terrestrial radio signal comprising a unique identification of a transmission source. A non-volatile memory component of the circuit stores an encrypted data set describing boundaries of an exclusion zone. A navigation data deriving component of... Agent:

20110081021 - Scrambling apparatus and method of operating the same: There is provided a scrambling apparatus and a method of operating the same. A scrambling apparatus according to an aspect of the invention may include: a memory unit storing and providing a plurality of previously generated scrambling initial state codes; and a scrambling unit reading at least one of the... Agent: Electronics And Telecommunications Research Institute