Cryptography inventions 04/06

20060088156 - Cfm mode system: A method for producing at least one ciphertext block from at least one plaintext block using a block cipher E and a key K, the method including receiving n plaintext blocks, wherein n is an integer greater than 0, setting Q0 equal to an initial value, and for each plaintext...

20060088157 - Public key encryption apparatus: According to an aspect of this invention, there is provided a public key encryption apparatus comprising a device generating a single photon, a device generating a random number, a storage device storing the random number as a private key, a device which transmits a single photon encoded by the private...

20060088158 - Method and system for processing a data set: A method and system for processing a data set. More particularly, the present invention provides a method and system for encrypting or decrypting a data set so that the data set remains entirely in the ASCII printable range. The method and system of the present invention allow a key of...

20060088159 - Constant modulation for enhancing qkd security: A method of improving the security of a QKD system is disclosed. The method includes randomly modulating the modulator in a QKD station both within the gating interval and outside of the gating interval, while recording those modulations made during the gating interval. Such continuous modulation prevents an eavesdropper from...

20060088160 - Method and apparatus for generating and printing a security stamp with custom logo on an electrophotographic printer: An improved electrophotographic printer is provided for generating a security stamp in firmware, and printing that security stamp to create documents that have a visible and tactile logo that is automatically printed on each page of a print job. The firmware will automatically create the proper bitmap of the security...

20060088161 - Video signal delivery system and video signal delivery method: A video delivery system and method which can reduce the amount of data stream to be transmitted without damaging a reproduced image when a screen is partially concealed in paid digital broadcasting. A video signal transmitter comprises a shield processing part for concealing an input video signal such that a...

20060088163 - Integrated circuit capable of pre-descrambling a portion of a frame: A method according to one embodiment may include receiving a frame comprising scrambled data, identifying a portion of the scrambled data, descrambling the portion to obtain descrambled data associated with the portion; and evaluating the descrambled data and providing a result of the evaluating operation before completion of descrambling of...

20060088162 - Synchronisation of secure audiovisual streams: This invention relates to a device capable of transmitting in a secured manner a set of films of high visual quality to a display screen of the TV screen type and/or for being recorded on the hard disk or on any other recording support of a box/connector connecting the teletransmission/telecommunication...

20060088164 - Cryptographic system and methods using a one way multidimensional function: A cryptographic method and systems using a keyed one-way function. A sending device uses the keyed one-way function to authenticate one or more receiving devices prerequisite to communication....

20060088165 - Method and apparatus for providing user-friendly information in digital device: A method of providing, and an apparatus to provide, information in a user-friendly manner to a user of a digital apparatus, the method including providing an output pattern applicable to a message to be outputted; providing a reference value on which changes in the output pattern are based; and outputting...

20060088166 - Authentication method and method device, system, and program for delivering secret information between proximity terminals: To easily and simply perform authentication and delivery of secret information between devices which perform a short-range wireless communication. When a device including a short-range wireless communication unit 20, a barcode creating unit 16, a barcode reading unit 17, and a barcode analyzing unit 18 is connected to a device...

20060088167 - Method and system for backup and restore of a context encryption key for a trusted device within a secured processing system: A method and system for backup and restore of a context encryption key (CEK) for a trusted device within a secured processing system maintains security of virtualized trusted device contexts, providing for replacement of a trusted device in the field. The CEK is encrypted along with a system identifier by...

20060083371 - Management messages transmission method by a management center intended to a plurality of multimedia units: The present invention relates to a management messages transmission method by a management center intended to a plurality of multimedia units. Each unit has a security module (SC) comprising at least one global encryption key used in relation with an encryption module. This method is characterized in that it consists...

20060083369 - Method and apparatus for sharing and generating system key in drm system: A method and apparatus are provided for generating and sharing a system key over a DRM system. The method includes: defining a (k−1)th order polynomial having k random numbers as coefficients, where k denotes a natural number; generating n polynomial solutions by inputting n constants into the polynomial, where n...

20060083370 - Rsa with personalized secret: The present invention creates flexibility into the RSA cryptography. The goal is achieved by allowing a user to select a personalized secret such as a password to derive an exponent that functions like a leading part of the RSA private key, and by further allowing the user to discretionarily change...

20060083372 - Biometrics-based cryptographic key generation system and method: The present invention provides a biometrics-based cryptographic key generation system and method. A user-dependent distinguishable feature transform unit provides a feature transformation for each authentic user, which receives N-dimensional biometric features and performs a feature transformation to produce M-dimensional feature signals, such that the transformed feature signals of the authentic...

20060083373 - System and method for allowing copying or distribution of a copy protected signal: A copy protection system and method for allowing copying or distribution of a copy protected signal is disclosed. One embodiment includes an apparatus and method for receiving a media signal in which a copy protection signal is embedded, receiving a control signal, generating a modified media signal by modifying or...

20060083374 - Security systems for programmable logic controllers: A security system encrypts the password on an operator interface terminal without storing the password and sends the encrypted password to a programmable logic controller, where the password is again encrypted. The multiple-encrypted password is stored on the programmable logic controller. Even if an unauthorized individual were able to see...

20060083375 - Apparatus and method for controlling recording operation: A record control apparatus for use in a broadcast signal receiver including a stream storage unit descrambles a scrambled record file, and records the descrambled record file. The apparatus includes: a broadcast stream record/reproduction controller for controlling recording/reproducing operations of a scrambled broadcast stream, and storing information indicative of a...

20060083376 - Quantum cryptography communication method, quantum cryptography communication apparatus, and quantum cryptography communication system: In quantum cryptography communication, a sequence of signals in the form of quantum states randomly selected from a plurality of quantum states each having a different phase modulation angle is transmitted from a data transmitting apparatus. In a data receiving apparatus, if the sequence of samples is received, a plurality...

20060083377 - Derivation method for cached keys in wireless communication system: A method and apparatus for providing improved security and improved roaming transition times in wireless networks. In the present invention, the same pairwise master key (PMK) from an authentication server can be used across multiple access points and a new pairwise transition key (PTK) is derived for each association of...

20060083378 - Security system for apparatuses in a network: The invention relates to a security system for networks, comprising a first portable unit (1) with a memory (3) for storing a worldwide unambiguous key record (4) provided for short-range information transmission of the key record (4). At least one apparatus (2) of the network is provided with a receiving...

20060083379 - Cryptographic communications session security: A method of cryptographically securing communications includes converting the communications to quantum states, observing the quantum states, and confirming that the observed states equate to the converted quantum states....

20060078107 - Diffused data encryption/decryption processing method: The present invention discloses a diffused data encryption/decryption processing method, which comprises a plaintext, being at least a 2D matrix; and a password, being at least a 2D matrix; such that the password determines the starting point of the diffusion, the length of the diffusion, the cycle of diffusion, the...

20060078108 - Hardware-based encryption/decryption employing dual ported memory and fast table initialization: A system for the encryption and decryption of data employing dual ported RAM to accelerate data processing operations during the computation of the encryption and decryption algorithm. The system includes logic to track data changes in the dual ported memory for fast table initialization; a means to accelerate operations by...

20060078110 - Apparatus and method for generating a key for broadcast encryption: An apparatus and method for generating a key for a broadcast encryption. The apparatus includes a node secret generator for managing a user that receives broadcast data in a tree structure and for generating a unique node secret for each node in the tree structure. The apparatus also includes an...

20060078109 - Information processing apparatus, information processing method, and program: An information processing apparatus performing cryptographic processing for providing a service by using an integrated circuit chip includes an authentication unit authenticating an operator operating an external device; a storage unit storing an access control list that has identification information, identifying the operator, associated with information indicating the cryptographic processing...

20060078111 - Method and apparatus for dvd copy protection with selective data pattern insertion: Method and apparatus for inhibiting unauthorized copying of data content of DVDs or CDs or other types of optical discs. DSV (digital sum value) data patterns are inserted into selected sectors of the data to be recorded on the optical disc. These selected data sectors are also those to which...

20060078112 - Method and system for managing rights in digital information over a network: A method and system for distributing digital information is disclosed. Preferably, a user acquires a tangible object which contain a code authorizing access to the digital information. The user reads the tangible object through a reader, which sends the code to a server on which the digital information is stored....

20060078113 - Information security using digital holography: A method and system for encrypting multi-dimensional information utilizing digital holography is presented. A phase-shifting interferometer records the phase and amplitude information generated by a three-dimensional object at a plane located in the Fresnel diffraction region with an intensity-recording device. Encryption is performed by utilizing the Fresnel diffraction pattern of...

20060078116 - Av communication network: An information appliance includes a network connection, a telecommunications processor connected to the network connection to provide two-way communication and a video processor connected to the network connection. Audio and video communications are sent from a content provider to the network connection. Audio and video communications are distributed to a...

20060078115 - Disparate network communications integration device: An information appliance includes a network connection, a telecommunications processor connected to the network connection to provide two-way communication and a video processor connected to the network connection. When information appliance sends a media request through the network connection to a server such that media is sent from a variety...

20060078114 - Household broadband information appliance: An information appliance includes a network connection, a telecommunications processor connected to the network connection and a video processor connected to the network connection. When information appliance sends a media request through the network connection to a server such that media is sent to the information appliance in response to...

20060078117 - Method of providing a/v telecommunications to consumers: Audio-visual telecommunications are provided to consumers by identifying a consumer and providing an information appliance comprising a network connection, a telecommunications processor connected to the network connection, and a video processor connected to the network connection. Audio-visual content is provided to the information appliance and fees are collected from an...

20060078118 - On-demand audio visual programming on a two-way telecommunications device: On-demand audio-visual programming is provided on a two-way communication device by receiving a request for audio-visual programming from the two-way communication device at a server, connecting the two-way communication device to a content provider and providing audio-visual programming to the two-way communication device....

20060078119 - Bootstrapping method and system in mobile network using diameter-based protocol: A bootstrapping method and system in a mobile network using a Diameter-based protocol are provided. The bootstrapping system includes; a mobile node, connecting to a local network, which creates and transmits an AAA request message; and a home AAA server of a home network, which authenticates the mobile node based...

20060078120 - Bearer control of encrypted data flows in packet data communications: In a communication session in which data flows with encrypted data packets pass through a monitoring intermediary for data traffic control. The encrypted data packets include SPIs (Secured Parameter Indexes) which are used to identify SAs (Security Associations) for data decryption. During the initial signaling process for the communication session,...

20060078121 - Encrypted cryptography system: A public key cryptography (PKI or other similar system) is used to sent partial or multiple of encryption or decryption algorithm (cipher or decipher) to the data sender or receiver to encrypt or decrypt the data to be sent or received and destroy itself after each or multiple use. Since...

20060078122 - Location-based wireless messaging for wireless devices: An apparatus and method of location-based wireless messaging wireless devices is described. The method includes the receipt of a location-based message request from a user of a wireless device desiring to receive a location-based message. Once the request is received, a spatial location of the wireless device is monitored. Once...

20060078123 - Method and apparatus for banding multiple access points: The invention relates generally to a method and an apparatus for synchronizing a digital transmission using beacon packets, and in particular, by using beacon packets utilized in communication between a wireless access point and a wireless station in accordance with operating in accordance with the Institute of Electrical & Electronics...

20060078124 - System and method for providing wlan security through synchronized update and rotation of wep keys: A system and method are disclosed that overcome deficiencies of prior art IEEE 802.11 WEP key management schemes. Preferred embodiments of the present system and method update WEP keys and rotate transmission key indices in a synchronized manner and on a frequent basis making it impractical for a hacker to...

20060078125 - Devices and methods for implementing cryptographic scrambling: A cryptographic system splits a digital message into multiple parts, and scrambles sequencing of the multiple parts according to an algorithm requiring first and second keys to resolve. The keys can be related by a graphically recognizable mathematical formula, and can be implemented by a third party or other secure...

20060078126 - Floating vector scrambling methods and apparatus: A cryptographic system splits a digital message into multiple parts, and scrambles sequencing of the multiple parts according to an algorithm requiring first and second keys to resolve. The keys can be related by a graphically recognizable mathematical formula, and can be implemented by a third party or other secure...

20060078127 - Dispersed data storage using cryptographic scrambling: A cryptographic system splits a digital message into multiple parts, and scrambles sequencing of the multiple parts according to an algorithm requiring first and second keys to resolve. The keys can be related by a graphically recognizable mathematical formula, and can be implemented by a third party or other secure...

20060072743 - Cryptography using finite fields of odd characteristic on binary hardware: A cryptographic method is described. The method comprises storing binary data representing at least a portion of a field element of an odd-characteristic finite field GF(pk) in a register, p being an odd prime number, the field element comprising k coefficients in accordance with a polynomial-basis representation, the binary data...

20060072744 - Data division method and device using exclusive or calculation: A plurality of original partial data are generated by dividing the original data by the prescribed processing unit bit length, a plurality of random number partial data each having a length less than or equal to the prescribed processing unit bit length are generated in correspondence to the plurality of...

20060072745 - Encryption system using device authentication keys: An encrypted data distributing method includes preparing cipher text which can be decrypted only by a specific trusted device, and performing encryption and decryption processing at a high speed. An encryption key is prepared using an encryption device authentication key unique to an encryption device and a decryption device authentication...

20060072746 - Register scheduling in iterative block encryption to reduce memory operations: Systems and methods encrypt data according to a multi-round, block encryption algorithm, In some embodiments, each round includes transforming data held in a group of registers of a processor register set and maintaining round output in the group of registers to use as input in a subsequent round. In some...

20060072748 - Cmos-based stateless hardware security module: Stateless hardware security modules facilitate securing data transfers between devices in a data communication system. The stateless hardware security module may communicate with other devices via a secure communication channel to securely transfer information between the client device and another device. As a result, sensitive information such as cryptographic keys...

20060072747 - Enhancing entropy in pseudo-random number generators using remote sources: A system, apparatus, and method are provided for enhancing entropy in a pseudo-random number generator (PRNG) using remote sources. According to one embodiment of the present invention, first, the PRNG's internal state is initialized. Local seeding information is then obtained from a local host. For added security, additional seeding information...

20060072749 - System and method for encryption of image data in a networked environment: This invention is directed to a system and method for the encryption of image data in a networked environment. More particularly, this invention is directed to a system and method for encrypting documents or data generated via an associated image generating device....

20060072750 - Adaptive watermarking: A method and apparatus (200) for embedding a watermark in an information signal bit-stream are described. The method comprises receiving a portion of an information signal bit-stream (MPEG2). A first copy of the received portion is stored in a first buffer (220). A second copy of the received portion is...

20060072751 - Information processing apparatus, information processing method, and program: An information processing apparatus for outputting a predetermined video signal from a component output terminal includes signal detection means for detecting a copy protection signal embedded in the video signal to protect copyright, setting detection means for detecting a currently set output format of the video signal output from the...

20060072752 - Broadcast receiving apparatus and broadcast receiving method: A broadcast receiving apparatus having demodulator for demodulating signal received from the tuner and releasing video and audio signals, first encryption decoder for encrypting or decoding the video and audio signals with the use of first encryption key, recorder for recording the encrypted video and audio signals, second encryption decoder...

20060072753 - Optical signal communication apparatus: In encryption transmission employing a conventional optical transmission apparatus, since a dedicated hardware unit to be used executes a complicated signal process, there are the problems that a high-speed transmission speed is difficult to realize and an entirety of a transmission system employing encryption becomes high in cost. An optical...

20060072754 - Chaotic communication system and method using modulation of nonreactive circuit elements: A chaotic communication system employs transmitting and receiving chaotic oscillating circuits. One improvement to first-generation systems is the ability to modulate a nonreactive element in the transmitting circuit, thus increasing modulation bandwidth. Other features include insertion of a gain control amplifier in a chaotic receiver; signal filtering in chaotic transmitters...

20060072761 - Access point that wirelessly provides an encryption key to an authenticated wireless station: An access point comprises a wireless transceiver and host logic coupled to the wireless transceiver. The host logic is adapted to provide access by a wireless station to a wired network. Through the wireless transceiver, the host logic wirelessly provides a symmetric encryption key to the wireless station using asymmetric...

20060072756 - Computer-based vehicle reservation system and method for a computer-based vehicle reservation system: A computer-based vehicle reservation system and a method for a computer-based vehicle reservation system. According to the method: the availability of all vehicles in the vehicle reservation system is detected; a user reserves a vehicle for a determinable time and/or period and/or location by a computing unit connected to a...

20060072759 - Methods and apparatus for bootstrapping mobile-foreign and foreign-home authentication keys in mobile ip: Methods and apparatus for dynamically generating authentication keys are disclosed. Specifically, a Mobile-Foreign authentication key is separately generated by both the Mobile Node and Foreign Agent. Similarly, a Foreign-Home authentication key is separately generated by the Foreign Agent and the Home Agent. In accordance with one embodiment, generation of the...

20060072758 - Methods and apparatus for reducing airlink congestion and processing time associated with ciphering information in a wireless network: Methods and apparatus for use in reducing airlink congestion and processing time associated with ciphering information communicated between a wireless communication network and a mobile station are disclosed. From the standpoint of the mobile station, one illustrative method involves the steps of receiving a ciphering mode information message from a...

20060072760 - System and method to use a wireless network to protect data and equipment: Preventing the misappropriation of high-value equipment or confidential data by providing access to the equipment or data only after finding and connecting to a predetermined wireless network. If the predetermined wireless network cannot be located, or if a connection to the predetermined wireless network cannot be established, the high-value equipment...

20060072755 - Wireless lock system: A wireless lock and key system using an encryption key pair. When a lock senses a person nearby, the random signal is generated. The key encrypts the signal and returns it to the lock. The lock decrypts the signal and compares it to the original to determine if the lock...

20060072757 - Wireless video surveillance system and method with emergency video access: A surveillance system and method for activating emergency communication between a third party and a system having at least one wireless input capture device ICD(s) and a corresponding digital input recorder (DIR) and/or another ICD, including the steps of providing base system; at least one user accessing the DIR via...

20060072763 - Apparatus and method for storing data: Provided are an apparatus and method for storing data. The apparatus includes a directory key generator generating a directory key required for encrypting and decrypting the data by inputting a device-specific key to a key generating function, the device-specific key being unique information allocated to the device and stored in...

20060072762 - Stateless hardware security module: Stateless hardware security modules facilitate securing data transfers between devices in a data communication system. The stateless hardware security module may communicate with other devices via a secure communication channel to securely transfer information between the client device and another device. As a result, sensitive information such as cryptographic keys...