Cryptography inventions 08/06

20060193470 - Data storage device with data transformation capability: In a preferred embodiment a method of operating an intelligent disk drive is described which includes compression and/or encryption capability at the file level. The intelligent disk drive includes means for executing distributed computing tasks including a CPU and associated memory. The communication interface with the host computer or other...

20060193471 - Encryption method and system: The invention concerns an encryption method and system particularly adapted to securing email. It makes it possible to prevent the encryption of the body of a message from generating certain symbols, called control characters, that can cause undesirable phenomena during the transmission of the message. The encryption uses a pseudo-random...

20060193472 - Secure encryption system, device and method: A system, device and method for encrypting plaintext information securely. The system includes a transmitting agent to generate and synchronize a first cipher stream using the plaintext information and a first key, to generate and synchronize a second cipher stream using a second key and a randomizing function to randomize...

20060193473 - Key management for group communications: A system for key management for a plurality of nodes includes: a first key generation device (130) for generating a first set of secret keys for secure communication between the plurality of nodes; a second key generation device (130) for generating a second set of secret keys that is different...

20060193474 - Content distribution using set of session keys: A method includes generating a set of session keys and encrypting content utilizing the set of session keys to generate encrypted content. The set of session keys is transmitted. The encrypted content is transmitted to a content destination, so as to enable the content destination, utilizing the set of session...

20060193475 - Method for signing a dataset in a public key system and data processing system for carrying out said method: A method for signing a dataset in a public key system is provided. An unsigned dataset is produced. The data set receives a first signature by producing a first signature using a first secret or private key from a pair of keys associated with an authorized person, the pair of...

20060188093 - Contents management method, contents management apparatus, and recording medium: An apparatus generates first shared information that is shared by the apparatus and a recording medium by performing a first bilateral authentication. The apparatus encrypts overwrite data that is used to erase key information item recorded in the recording medium using the first shared information. Encrypted overwrite data is transferred...

20060188094 - Generation of encrypted video information: An encrypted stream of video information (20) contains first video frames (22) and second video frames which are accessible and not accessible during trick play respectively. From a source stream encrypted that is for decryption with repeatedly changing control words sections of the stream are identified where respective first ones...

20060188095 - Combination encoding method for simultaneously encrypting and channel encoding, transmitting apparatus thereof, combination decoding method for simultaneously channel decoding and decrypting, and receiving apparatus thereof: A combination encoding method, a transmitting apparatus thereof, a combination decoding method, and a receiving apparatus thereof are provided. The transmitting apparatus includes a combination encoding unit for performing combination encoding on a source coded message and outputting the combination encoded message, thereby performing encrypting and channel encoding simultaneously. The...

20060188096 - Systems and methods for remotely controlling computer applications: A modular system and method is for displaying and controlling a host computer application interface using a real-time video and control stream to a remote digital media receiver client is disclosed. The continuous graphical display pixels and audio of a host computer application interface window are divided into time segments...

20060188097 - Medium storing program selecting electronic ticket, electronic ticket processing apparatus and electronic ticket selection method: One or more computer-readable media on which is stored a program for selecting an optimum electronic ticket among a plurality of electronic tickets for imparting rights of use of content, the stored program causing a computer to execute functions comprising: extracting a plurality of electronic tickets corresponding to a content;...

20060188098 - Encryption/decryption device, communication controller, and electronic instrument: An encryption/decryption device includes an encryption/decryption processing section which performs encryption or decryption processing for divided data of first and second content data in an operation mode of a block cipher method using data in a block other than a block under processing, and an intermediate value storage section which...

20060188099 - Key management system and method for the same: An inexpensive and secure key management system provides a digital content copy protection system and a method for the same. The key management system is constituted by a master data memory configured to be stored with a device key, a secret data management block configured to convert the device key...

20060188100 - Asymmetrical escrow system for use in non-cooperative bargaining relationships: An escrow system that comprises correlating confidential data defining a fixed condition or set of conditions for a release of escrow with data presented in an indefinite series of confidential presentations seeking to satisfy that condition or set of conditions. The system involves a process whereby the conditions for a...

20060182274 - Method for ciphering a compressed audio or video stream with error tolerance: A method ciphers a standardized stream of compressed audio or video data, wherein at least one part of the bits of data packets delimited by two consecutive synchronization markers is ciphered by pseudo-random stream....

20060182273 - Methods for point compression for jacobians of hyperelliptic curves: A cryptosystem based on a Jacobian of a hyperelliptic curve is being used. Various methods and apparati are provided for generating a compressed data format that identifies one or more points—on the Jacobian of the hyperelliptic curve, and for subsequently decompressing the compressed format data....

20060182275 - Method for inserting synchronization markers into a video stream, compatible with a block cipher: A method inserts synchronization markers into a standardized stream of compressed and ciphered data, wherein at least one part of the compressed data stream is ciphered bit by bit, by block cipher, and wherein a synchronization marker is only inserted into the compressed data stream after the number of ciphered...

20060182276 - Asymmetric key pair having a kiosk mode: Techniques for providing different levels of access based upon a same authentication factor are provided. A first message is received that is transformed with a first portion of a split private key, the first portion based upon a user password and another factor, and the split private key associated with...

20060182277 - Roaming utilizing an asymmetric key pair: Techniques for generating a portion of a split private key are provided. A first symmetric key and a second symmetric key different than the first symmetric key are generated at a first location. The generated second symmetric key and a first one of multiple factors for generating the private key...

20060182278 - Video stream display and protection method and device: The present invention relates to a process for the distribution of video streams to a plurality of addressees, comprising a marking stage consisting in adding at least one visual element to this video stream, which marking stage is applied to an original video stream common to all the addressees and...

20060182279 - Secure conditional access port interface: An apparatus and method thereof for providing a secure path for a digital signal in an intelligent transceiver such as a bi-directional set-top box. A digital signal (e.g., a broadcast signal or a signal received via a cable modem) is received by the intelligent transceiver at a front-end device (comprising,...

20060182280 - Method and apparatus for providing bootstrapping procedures in a communication network: An approach is provided for performing authentication in a communication system. In one embodiment, a key is established with a terminal in a communication network according to a key agreement protocol. The agreed key is tied to an authentication procedure to provide a security association that supports reuse of the...

20060182281 - Storage system, data migration method and management computer: In a storage system 100 which is provided with a storage apparatus having a volume 120 and which is accessible from a host computer, it is made possible to execute the data migration when a storage apparatus provided with a mechanism capable of decrypting the encrypted data is chosen as...

20060182282 - Method for securely distributing configuration information to a device: An MTA certificate containing a public key is provided to a provisioning server, typically via an MIB. The provisioning server retrieves configuration information associated with the MTA. A symmetric session key is randomly generated and used to encrypt the configuration information. The public key is used to encrypt the symmetric...

20060182283 - Architecture for asymmetric crypto-key storage: Techniques for securing an asymmetric crypto-key having a public key and a split private key with multiple private portions are provided. A first one of multiple factors is stored. All of the factors are under the control of a user and all are required to generate a first private portion...

20060177051 - Cryptographic applications of the cartier pairing: Systems and methods for cryptographically processing data as a function of a Cartier pairing are described. In one aspect, a Cartier pairing is generated from two different abelian varieties or abelian varieties and an isogeny between them. Data is cryptographically processed based on the Cartier pairing....

20060177050 - Method and system for hardware accelerator for implementing f8 confidentiality algorithm in wcdma compliant handsets: In a wireless communication system, a method and system for hardware accelerator for implementing the f8 confidentiality algorithm in WCDMA compliant handsets are provided. Input variables may be initialized in a keystream generator and an intermediate value may be generated with a confidentiality key parameter and a key modifier. The...

20060177052 - S-box encryption in block cipher implementations: A method of performing encryption or decryption in a cryptographic engine that implements a cryptographic algorithm reduces the risk of differential power analysis revealing key information from inputs and output from S-boxes. The data and address locations used to access the data in S-boxes are encrypted. Retrieval of data from...

20060177053 - Data processing apparatus, data recording apparatus, data playback apparatus, and data storage method: A data encryption processor encrypts a data set received from a controller in accordance with a predetermined encryption algorithm, and generates a data set in which encrypted data C is inserted into a data area, and encrypted data B is inserted into a padding area. The data encryption processor passes...

20060177054 - Data processing apparatus, data recording apparatus, data playback apparatus, and data storage method: Upon encrypting and storing data C on a recording medium, data B corresponding to data C is embedded in a padding area together with parity data for data B and C as padding data, and data B and parity data are encrypted in correspondence with data C....

20060177055 - Conditional access system for digital multimedia broadcasting and method therefor: A digital multimedia broadcasting (DMB) conditional access system (CAS) for solving the difficulty in providing an adequate broadcasting signal by installing repeaters in shadow areas and restricting reception billing to only the subscribers in the shadow areas. The CAS includes first and second communication networks; a mobile terminal for reproducing...

20060177056 - Secure seed generation protocol: Techniques for secure generation of a seed for use in performing one or more cryptographic operations, utilizing a seed generation protocol carried out by a seed generation client (110c) and a seed generation server (110s). The seed generation server (110s) provides a first string to the seed generation client (110c)....

20060177057 - Object authentication using embossed hidden images: An authenticatable object comprises a surface having a latent hidden image embossed therein. The latent image is an encoded version of an authentication image and comprises a plurality of elements applied to the surface with a predetermined frequency. The latent hidden image is configured for optical decoding by a decoder...

20060177058 - Automatically targeting notifications about events on a network to appropriate persons: Automatically notifying, in response to an event associated with a particular server and/or application on a network, only appropriate person(s) such as, for example, only the IT member(s) responsible for supporting the server and/or application. The work schedules and the work schedule exceptions of one or more persons may be...

20060177059 - Printing apparatus, program and method: A printing apparatus includes a communication unit for receiving printing data from an external device; an identification unit for identifying the communication unit through which the printing data is received; a security setting unit for setting security for printing in association with the communication unit; security determination unit for determining...

20060177060 - Image alignment: An image decryption device (1) comprises a screen (10) on which a decrypted image may be visible. The decrypted image may the combination of two partial images, an encrypted image (A) displayed by a display device (2) and a key image or decrypting image (B) superimposed on the encrypted image...

20060177061 - Secure data parser method and system: A secure data parser is provided that may be integrated into any suitable system for securely storing and communicating data. The secure data parser parses data and then splits the data into multiple portions that are stored or communicated distinctly. Encryption of the original data, the portions of data, or...

20060177062 - Methods for point compression for jacobians of hyperelliptic curves: A cryptosystem based on a Jacobian of a hyperelliptic curve is being used. Various methods and apparati are provided for generating a compressed data format that identifies one or more points—on the Jacobian of the hyperelliptic curve, and for subsequently decompressing the compressed format data....

20060177063 - Wireless network having multiple security interfaces: A number of wireless networks are established by a network device, each wireless network having an identifier. Requests are received from client devices to establish wireless network sessions via the wireless networks using the identifiers. Network privileges of the client devices are segmented into discrete security interfaces based on the...

20060177066 - Key management method using hierarchical node topology, and method of registering and deregistering user using the same: A key management, user registration and deregistration for a digital rights management (DRM) system in a home network, using a hierarchical node topology. In the key management, node information is generated by allocating a pair of keys (a public key and a private key) to each node. A node tree...

20060177064 - Secure memory card with life cycle phases: A secure memory card with encryption capabilities comprises various life cycle states that allow for testing of the hardware and software of the card in certain of the states. The testing mechanisms are disabled in certain other of the states thus closing potential back doors to secure data and cryptographic...

20060177065 - System and methods for encrypting data utilizing one-time pad key: A system and methods for encrypting and decrypting data within an encryption management system. A random number table is generated by concatenating true random numbers. A subset of the random number table is then randomly selected to be used for the generation of a one-time pad key. The one-time pad...

20060177067 - Hybrid broadcast encryption method: A hybrid broadcast encryption method is provided. The hybrid broadcast encryption method includes setting initialization values, generating a node secret using the initialization values; generating a private secret using the node secret; sending the node secret and the private secret; generating a broadcast message based on a revoked group; encrypting...

20060177068 - Methods and apparatus for facilitating a secure processor functional transition: A processor and associated local memory are capable of operative connection to a main memory such that data may be read from the main memory for use in the local memory, and the processor is operable to carry out actions, including: entering a secure mode of operation where externally initiated...

20060177069 - Queued sessions for communicating correlated messages over a network: Systems and methods in accordance with the present invention allow for messages to be delivered from one application to another over a network in discrete groupings or communication sessions. For example, a sending computer system sends a group of related messages to a queue at a recipient computer system. The...

20060171530 - Encryption communication system: An encroption transmission apparatus and an encryption reception apparatus avoid attack that takes advantage of re-transmission request. A server apparatus encrypts a content key five times, thereby generating five encrypted content keys, calculates a hash value of the content key, and transmits the five encrypted content keys and the hash...

20060171532 - Encryption processing circuit: An encryption processing circuit which performs a permutation process of a common key block encryption system that permutes input data of plural bits according to a per-bit correspondence rule and outputs the processed data. The encryption processing circuit comprises a data input unit that receives the input data of plural...

20060171533 - Method and apparatus for encoding and decoding key data: An apparatus and a method for encoding and decoding key data are provided. An apparatus for encoding DPCMed differential data of key data includes a DND operator which performs on input differential data a predetermined number of times a DND operation, in which a divide operation is performed on the...

20060171531 - Padding application method ensuring security of cryptosystem and encryptor/decryptor: When an n-bit plaintext M is received, the OAEP+padding is applied thereto. According to a conversion rule or a conversion function A that satisfies the conditions as described below, two bit strings m and r are obtained from the result of the OAEP+padding. The conversion function A is a map...

20060171534 - Variable key encryption using multi-dimensional arrays: A method is disclosed for encrypting messages for secure transmission over the Internet, for decryption by the receiver of such messages. The key used to encode each character of the message changes continually, in response to both its position after encoding the previous character and the identity of the previous...

20060171535 - Content distribution system and method: In a content distribution method, two or more certification marks (130) are produced for the content to be delivered, each of the certification marks containing a temporary access information item defining an accessing right to the content. Each of the certification marks is distributed to a user at a shop....

20060171536 - Method and mobile terminal for securely transmitting a mobile subscriber identifier: Disclosed is a method for securely transmitting a mobile subscriber identifier in a mobile communications system. The method includes coding a mobile subscriber identifier with a public key, generating a first message authentication code (MAC), transmitting the coded mobile subscriber identifier and the first MAC, receiving the mobile subscriber identifier...

20060171538 - Information technology (it) equipment positioning system: An information technology (IT) equipment positioning system comprises a plurality of wireless transponders distributed in multiple locations in the data center and a controller. The controller is adapted to operate the transponders using triangulation to identify and detect positioning according to three-dimensional coordinates for wireless-tagged IT equipment located in the...

20060171539 - Wireless event authentication system: A wireless data acquisition and recording (DAR) system includes acquisition circuitry including a video camera and/or a microphone carried by an operator for capturing video and audio events viewed and/or heard by the operator. A wireless transmitter wirelessly transmits digital signals containing the video events captured by the video camera...

20060171537 - Wireless network credential provisioning: A credential provisioning technique is provided that is secure yet easy to administer. A credential provisioner such as a network AP is configured to leave a secure mode of operation and allow open authentication with a wireless supplicant. After open authentication is established, the wireless supplicant requests credential provisioning. In...

20060171540 - Wireless network system and communication method for external device to temporarily access wireless network: A wireless network system and a communication method, where an external network device easily and temporarily logs in and out of the wireless network. A key management device of the wireless network system includes a limited communication unit that receives encryption information from a wireless network device, a storage unit...

20060171541 - Method for creating and distributing cryptographic keys in a mobile radio system and corresponding mobile radio system: A first cryptographic key (318) and a second cryptographic key (322) are created by a mobile radio terminal (103) and by a computer of the home communications network (108, 109) by using authentication key materials (312). The first cryptographic key (318) is transmitted to the computer of the visited communications...