Cryptography inventions 09/06

20060210069 - Elliptic curve point octupling for weighted projective coordinates: Systems and methods for elliptic curve octupling for weighted projective coordinates are described. In one aspect, a weighted projective point P on an elliptic curve is identified. 8P is computed from P independent of repeated doubling operations using fewer field multiplications....

20060210068 - Elliptic curve point octupling using single instruction multiple data processing: Systems and methods for elliptic curve octupling using Single Instruction Multiple Data (SIMD) processing are described. In one aspect, a weighted projective point P on an elliptic curve, P having coordinates (x, y, z) is identified. Value 8P is computed from P with 12 sets of field multiplications using SIMD...

20060210065 - Encryption/decryption device and method: Input picture data are encrypted with high secrecy and restoration against an error of encrypted data. An EXOR circuit 100 calculates input picture data and a pseudo random sequence and obtains encrypted data. The obtained encrypted data are held in an FF circuit 101. The FF circuit 101 is reset...

20060210066 - Method for the secure application of a cryptographic algorithm of the rsa type and a corresponding component: A method for the secure application of a cryptographic algorithm of the RSA type in an electronic component obtains the value of a public exponent e from a given set of probable values, without a priori knowledge of that value. Having determined the value for the public exponent e, the...

20060210067 - Sending a message securely over an insecure channel: Sending a message securely on an insecure channel. The message is encoded in the form of a singular matrix, and multiplied with a first non-singular matrix. The resulting first cipher data is sent to a receiver system. Receiver system multiplies the first cipher data with a second non-singular matrix and...

20060210070 - Mimo air interface utilizing dirty paper coding: A transceiver comprising a data processing module, a security processing module, a medium access control (MAC) module, a dirty-paper-coding (DPC) module, and a smart antenna processor. The data processing module provides user data streams to the MAC module and channel state information to the smart antenna processor. The security processing...

20060210071 - Encryption of security-sensitive data: Techniques are provided for processing data. It is determined that a portion of a data stream to be transmitted includes a security-sensitive portion. The security-sensitive portion of the data stream is encrypted. The data stream with the encrypted security-sensitive portion is transmitted....

20060210072 - Electronic apparatus, information managing method and information managing program: An electronic apparatus for managing first information sharable by a plurality of users, includes: an enciphering/deciphering part generating a key for enciphering and deciphering the first information for each of operational scope of the first information, with at least one combination of second information previously set for the own apparatus...

20060210073 - Method for predicting when mail is received by a recipient: A method utilizing a computer to predict what volumes of mail will arrive at a given destination on a given date. The method is accomplished by: utilizing the composition of a mailing campaign that contains a plurality of mailing shipments that contain a plurality of containers containing a plurality of...

20060210074 - Digital recording device digital reproduction device digital recording/reproduction device encryption device decryption device, encryption method and decryption method: In a digital recording apparatus including a data control circuit 2a, a memory 4, an encryption circuit 5, an interface 6, a DVD drive 8, and a CPU 3, when encryption is required during recording, data is temporarily stored in the memory 4. After the encryption circuit 5 is enabled,...

20060210075 - Secure equipment which is used, on request, to distribute, record and display audio-visual works with an mpeg-2 ts-type format: A process for distributing audiovisual sequences in accordance with a nominal stream format respecting a MPEG-2 TS norm including a succession of TS packets, including analyzing the stream made prior to the transmitting to client equipment to generate a first stream in conformity with the MPEG-2 TS format, modifying all...

20060210076 - Imaging system with respository on a distributed network: A three-dimensional imaging system providing certification over a distributed network. By monitoring or controlling image capture from a trusted environment, the fidelity of the record of the image captured is certified by the operator of the trusted environment. An image record may be archived and an audit trail maintained for...

20060210077 - Systems and methods for retrofitting electronic appliances to accept different content formats: Systems and methods are disclosed for using an arbitrary fixed channel to carry third-party information. In one embodiment, the present invention provides systems and methods for enabling existing content rendering devices to accept content encoded in a proprietary format, such as an encoding format used by a digital rights management...

20060210078 - Terminal equipment: A Terminal equipment 10 has a message information accepter 12 for accepting message information from terminal program 26, an ID generator 14 for generating a thread ID for identifying the message information, a transmitter 16 for generating a message containing the message information and the thread ID and for transmitting...

20060210079 - Mobile communication system, communication control method and a mobile station: The present invention is to provide the mobile communication system which enables power consumption reduction for the mobile station with dual mode capability by unifying the location registration and paging processing for every mobile communication system. The mobile communication system is so arranged to perform location registration processing and paging...

20060210080 - Key synchronization in a visual cryptographic system: A system for visual cryptography comprises a server (1) for encrypting a series of images using a set of keys, a terminal (2) for displaying the encrypted images, a transmission medium (4) for transmitting the encrypting images from the server to the terminal (2), and a decryption device (3) for...

20060210081 - Ciphertext switching for syntax compliant encryption: Systems and methods providing ciphertext switching for syntax compliant encryption are described. In one aspect, intermediate ciphertext is generated from syntax compliant plaintext. Post-processing is applied to the intermediate ciphertext to determine if there are any illegal symbols in the intermediate ciphertext. If an illegal symbol is located, the illegal...

20060210082 - Volatile device keys and applications thereof: A key is determined from a volatile response using circuitry on the device. The volatile response depend on process variation in fabrication of the device. Error control data that depends on the first volatile response can be computed, stored externally to the device, and then used to generate the key...

20060210084 - Method and system to securely store and distribute content encryption keys: A method comprising receiving a product key at a service provider, where the product key is (1) received from a first content provider, and (2) encrypting a first content controlled by the first content provider. The method encrypts the product key within a first secure device at the service provider...

20060210083 - Private key delivery system and a private key delivery method: A private key delivery system and a private key delivery method are disclosed. The private key delivery system includes a transmitter, a receiver, and an optical transmission line connecting the transmitter and the receiver. The transmitter includes a single photon generating unit for simultaneously generating two or more single photons...

20060210085 - Method and apparatus for expiring encrypted data: One embodiment of the present invention provides a system that can expire encrypted-data. During operation, the system receives an expiry-request that includes object-identifying information, which can be used to identify a set of database objects that contain the encrypted-data, wherein a database object can be a table, a partition, a...

20060204003 - Cryptographic communication system and method: Cryptographic communication between communication terminals can be realized even when a plurality of cryptographic algorithms are present, and secure cryptographic communication for a longer time is realized without increasing a processing overhead at each of the communication terminals. A key management server manages cryptographic algorithms that can be used by...

20060204006 - Cryptographic key split combiner: A cryptographic key split combiner, which includes a number of key split generators for generating cryptographic key splits and a key split randomizer for randomizing the cryptographic key splits to produce a cryptographic key, and a process for forming cryptographic keys. Each of the key split generators generates key splits...

20060204005 - Method and system for enhancing cryptography-based security: As part of a cryptographic protocol, or in addition to it, a computer may participate in a cryptographic key generation protocol. The cryptographic key generation protocol may be such that it generates a set of bits sufficient for a cryptographic key and, also, one or more additional bits. The cryptographic...

20060204004 - System and method for secure authentication of a \"smart\" battery by a host: Systems and methods for providing a battery module 110 with secure identity information and authentication of the identity of the battery 110 by a host 120. In one embodiment, the system for providing a battery module with secure identity information includes: (1) a tamper resistant processing environment 200 located within...

20060204007 - System and method for detecting aes random number generator synchronization errors: In accordance with the teachings of the present invention, a system and method for detecting AES random number generator synchronization errors are provided. In particular embodiments of the present invention, the method includes generating a first synchronization word at a playback server, the first synchronization word comprising a 10-bit advanced...

20060204008 - Decryption apparatus and decryption method: A decryption apparatus stores secret keys, each of which is specified by two nodes in tree structure in first memory, stores identifier of decryption apparatus corresponding to leaf in tree structure in second memory, acquires ciphertext and ciphertext index information item indicating two nodes, in the tree structure, which correspond...

20060204009 - Physical layer built-in security enhancement of spread spectrum wireless communication systems: This disclosure contains three parts. First, it provides a quantitative analysis on the weaknesses of the physical layer built-in security of the operational and the proposed 3G spread spectrum based wireless communication systems. Second, it incorporates advanced cryptographic techniques into wireless transceiver design. More specifically, it proposes an AES based...

20060204010 - Sentinel synchronization method for enhancing qkd security: A method of improving the security of a QKD system is disclosed. The method includes sending synchronization (“sync”) signals from a first QKD station to the second QKD station over a sync signal channel and recording data relating to the arrival times of the sync signals at the second QKD...

20060204011 - System and method for sending encrypted messages to a distribution list: A system and method for sending encrypted messages to a distribution list that facilitates the sending of such messages only to individuals or other entities associated with the distribution list that will be able to read the message. In one embodiment, the method comprises the steps of: identifying a distribution...

20060198515 - Secure disc drive electronics implementation: A data storage device comprises a storage medium and a controller including a cryptographic and security module for encrypting and decrypting data to be stored in and retrieved from the storage medium. The cryptographic and security module includes an interface for receiving commands from a processor, a secret root key,...

20060198514 - System, portable device and method for digital authenticating, crypting and signing by generating short-lived cryptokeys: A system for authentication, encryption and/or signing, as well as corresponding devices and methods, that use temporary but repeatable encryption keys uniquely connected to the user and generated from a unique set of input parameters. The system comprises an input device (105) designed to extract predetermined characteristic values from value...

20060198516 - Systems and methods for generating random addition chains: An addition chain is first generated, and then an integer x is derived from it. Doubling and star steps may be implemented in the addition chain. This approach eliminates the computationally expensive step of generating the addition chain from an exponent, and therefore can greatly reduce the computation time of...

20060198517 - Method and system for asymmetric key security: Exemplary embodiments disclosed herein may include a method and system for creating pair-wise security keys, comprising receiving an identity key from a website, generating a master key, creating a pair-wise symmetric key or asymmetric key pair by utilizing an encryption function of the identity key and the master key, and...

20060198518 - Information processing device and information processing method: The present invention is relative with an information processing method for carrying out processing unit data in which one contents are handled as a data unit. When contents data are to be reproduced/output in succession, the tamper check processing for the next contents data, reproduced next to current contents data,...

20060198519 - Digital rights management of a digital device: According to one embodiment, an apparatus involves the descrambling of scrambled digital content using a one-time programmable key and digital rights management. The apparatus comprises a processor and a descrambler. The processor is adapted to execute a Digital Rights Management (DRM) function in order to determine whether each entitlement needed...

20060198520 - Secure transmission of digital audio signals: In a headset audio speech signals are picked up by the microphone, where they are digitally sampled before being encoded by a vocoder. The coded speech data is then provided to a CRC module, where error correction data is added before the resulting data is encrypted by an encryption module....

20060198521 - One-way synchronization of a two-way qkd system: A method of synchronizing the operation of a two-way QKD system by sending a sync signal (SC) in only one direction, namely from one QKD station (ALICE) to the other QKD station (BOB). The one-way transmission greatly reduces the amount of light scattering as compared to two-way sync signal transmission....

20060198522 - Wide band-dcsk modulation method, transmitting apparatus thereof, wide band-dcsk demodulation method, and receiving apparatus thereof: Provided are a wide band-differential chaos shift keying modulation method, a transmitting apparatus adopting the wide band-differential chaos shift keying modulation method, a wide band-differential chaos shift keying demodulation method, and a receiving apparatus adopting the wide band-differential chaos shift keying demodulation method. The wide band-differential chaos shift keying modulation...

20060198523 - System and method of training in a transmit/receive system: A radio frequency transmitter is configured to send radio frequency messages to activate a remote system. Each message includes an encrypted counter value and a transmitter identifier. The transmitter is configured to send at least two of the messages having sequential encrypted counter values in response to a single user...

20060198524 - Hardware implementation of the mixcolumn/invmiscolumn functions: An encryption/decryption unit, a conversion module, a method and a computer program product share common logic for both a cipher transformation and an inverse cipher transformation to reduce the number of gates requires with a small increase in wait time. A keyschedule unit providing at least one key value. The...

20060198525 - Systems and arrangements to adjust resource accessibility based upon usage modes: Systems and arrangements to adjust resource accessibility based upon usage modes are contemplated. Embodiments may include a supervisor instance such as an operating system that is adapted to select one or more supervisor keys from a set of supervisor keys available to the host node or platform upon which the...

20060198526 - Image forming apparatus certificate sheet making method and certificate sheet processing method: An image forming apparatus has a micropattern reading unit, an encoded image generating unit and a code printing control unit. The micropattern reading unit reads a micropattern of a sheet. The encoded image generating unit generates an encoded image. The encoded image has the micropattern and a private key of...

20060198515 - Secure disc drive electronics implementation: A data storage device comprises a storage medium and a controller including a cryptographic and security module for encrypting and decrypting data to be stored in and retrieved from the storage medium. The cryptographic and security module includes an interface for receiving commands from a processor, a secret root key,...

20060198514 - System, portable device and method for digital authenticating, crypting and signing by generating short-lived cryptokeys: A system for authentication, encryption and/or signing, as well as corresponding devices and methods, that use temporary but repeatable encryption keys uniquely connected to the user and generated from a unique set of input parameters. The system comprises an input device (105) designed to extract predetermined characteristic values from value...

20060198516 - Systems and methods for generating random addition chains: An addition chain is first generated, and then an integer x is derived from it. Doubling and star steps may be implemented in the addition chain. This approach eliminates the computationally expensive step of generating the addition chain from an exponent, and therefore can greatly reduce the computation time of...

20060198517 - Method and system for asymmetric key security: Exemplary embodiments disclosed herein may include a method and system for creating pair-wise security keys, comprising receiving an identity key from a website, generating a master key, creating a pair-wise symmetric key or asymmetric key pair by utilizing an encryption function of the identity key and the master key, and...

20060198518 - Information processing device and information processing method: The present invention is relative with an information processing method for carrying out processing unit data in which one contents are handled as a data unit. When contents data are to be reproduced/output in succession, the tamper check processing for the next contents data, reproduced next to current contents data,...

20060198519 - Digital rights management of a digital device: According to one embodiment, an apparatus involves the descrambling of scrambled digital content using a one-time programmable key and digital rights management. The apparatus comprises a processor and a descrambler. The processor is adapted to execute a Digital Rights Management (DRM) function in order to determine whether each entitlement needed...

20060198520 - Secure transmission of digital audio signals: In a headset audio speech signals are picked up by the microphone, where they are digitally sampled before being encoded by a vocoder. The coded speech data is then provided to a CRC module, where error correction data is added before the resulting data is encrypted by an encryption module....

20060198521 - One-way synchronization of a two-way qkd system: A method of synchronizing the operation of a two-way QKD system by sending a sync signal (SC) in only one direction, namely from one QKD station (ALICE) to the other QKD station (BOB). The one-way transmission greatly reduces the amount of light scattering as compared to two-way sync signal transmission....

20060198522 - Wide band-dcsk modulation method, transmitting apparatus thereof, wide band-dcsk demodulation method, and receiving apparatus thereof: Provided are a wide band-differential chaos shift keying modulation method, a transmitting apparatus adopting the wide band-differential chaos shift keying modulation method, a wide band-differential chaos shift keying demodulation method, and a receiving apparatus adopting the wide band-differential chaos shift keying demodulation method. The wide band-differential chaos shift keying modulation...

20060198523 - System and method of training in a transmit/receive system: A radio frequency transmitter is configured to send radio frequency messages to activate a remote system. Each message includes an encrypted counter value and a transmitter identifier. The transmitter is configured to send at least two of the messages having sequential encrypted counter values in response to a single user...

20060198524 - Hardware implementation of the mixcolumn/invmiscolumn functions: An encryption/decryption unit, a conversion module, a method and a computer program product share common logic for both a cipher transformation and an inverse cipher transformation to reduce the number of gates requires with a small increase in wait time. A keyschedule unit providing at least one key value. The...

20060198525 - Systems and arrangements to adjust resource accessibility based upon usage modes: Systems and arrangements to adjust resource accessibility based upon usage modes are contemplated. Embodiments may include a supervisor instance such as an operating system that is adapted to select one or more supervisor keys from a set of supervisor keys available to the host node or platform upon which the...

20060198526 - Image forming apparatus certificate sheet making method and certificate sheet processing method: An image forming apparatus has a micropattern reading unit, an encoded image generating unit and a code printing control unit. The micropattern reading unit reads a micropattern of a sheet. The encoded image generating unit generates an encoded image. The encoded image has the micropattern and a private key of...