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Cryptography > Key Management > Having Particular Key Generator > Nonlinear (e.g., Pseudorandom) Nonlinear (e.g., Pseudorandom)Nonlinear (e.g., Pseudorandom) patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/22/07 - 20070269043 - Process to secure a personal portable object The invention relates to a process to make secure a personal portable object comprising a body of the personal portable object, a microchip, a printed image and a device to enable said personal portable object to communicate with an entity external to the device. The process includes using an image ... 11/15/07 - 20070263861 - Keystream encryption device, method, and program A stream encryption device generates a first pseudo random number sequence from key information, generates a second pseudo random number sequence according to clock control performed according to the first pseudo random number sequence, and subjects it to a nonlinear function calculation, thereby generating a key stream. The stream encryption ... 10/04/07 - 20070230695 - Apparatus and method for generating a number with random distribution An apparatus for providing a number with random distribution for use in a circuit including a signal processor processing encrypted data. The apparatus includes a unit formed to provide the number from at least a portion of the encrypted data processed by the signal processor. ... 10/04/07 - 20070230694 - Cryptographically secure pseudo-random number generator A cryptographically secure pseudo-random number generator is configured to obtain one or more unpredictable sources of entropy that provide a seed. A current internal state of the number generator is modified as a function of the current internal state and the seed to accumulate entropy. The modified internal state may ... 10/04/07 - 20070230693 - System and method for generating pseudo-random numbers A process and system for generating a pseudo-random number is presented. Input data having entropy is gathered in an Entropy Pool and transformed once by a cryptographic hash function. The transformed data forms the internal state of the pseudo-random number generator. The generator forms the output by applying a second ... 07/19/07 - 20070165848 - Lightweight pseudo-random number generator A computer implemented method, data processing system, and computer usable code are provided for generating random numbers. The aspects of the present invention receive a request for a number of random numbers and determine common denominators for the number of random numbers. Grid dimensions are determined using the common denominators ... 07/19/07 - 20070165847 - Defined-distribution pseudo-random number generator The present invention provides a method and an apparatus for generating sequences of pseudo-random numbers. Seed random sequences are used to establish independent pseudo-random sub-processes. Those independent pseudo-random sub-processes are combined through a technique of successive interaction to create final pseudo-random sequences. One set of pseudo-random sub-processes is used to ... 07/19/07 - 20070165846 - Pseudorandom number generation with expander graphs Pscudorandom numbers may be generated from input seeds using expander graphs. Expander graphs are a collection of vertices that are interconnected via edges. Generally, a walk around an expander graph is determined responsive to an input seed, and a pseudorandom number is produced based on vertex names. Specifically, a next ... 07/12/07 - 20070160204 - Microcontroller and authentication method between the controllers A microcontroller includes a program memory configured to store a program group and a first encryption key; a CPU; and an identification (ID) storage section configured to store an identification data peculiar to a user of the microcontroller. The CPU executes the program group to generate a second encryption key ... 06/28/07 - 20070147608 - Random binary sequence generator According to the invention, the sequence is produced from a fingerprint sensor and an analog-to-digital converter. The random binary sequence is produced from low order bits from the converter. Said sensor comprises a matrix of preferably pyroelectric detectors. The order of the bits is scrambled by a reorganization circuit, and ... 06/21/07 - 20070140485 - Method and circuit for generating random numbers, and computer program product therefor A random number generator uses the output of a true random generator to alter the behavior of a pseudo-random number generator. The alteration is performed by a mixing logic that builds a random seed for the pseudo-random number generator and includes a generator of an alteration signal, the generation of ... 06/14/07 - 20070133791 - Method for controlling security channel in mac security network and terminal using the same A method for controlling a security channel for reducing system load by extending the use period of a security association key is provided. In this method, an upper bit initial value of an initialization vector of an encryption algorithm and a using range thereof are shared between a transmitting side ... 06/14/07 - 20070133790 - Random number generator and method for generating random number A random number circuit includes an oscillator capable of generating a clock signal including a sequence of clocks at a center frequency, the clock signal having a frequency offset from the center frequency, a reset circuitry capable of generating a reset signal indicating a transition from a first state to ... 05/24/07 - 20070116275 - Method for the secure transmission of data, via networks, by exchange of encryption information, and corresponding encryption/decryption device A device is dedicated to encrypting/decrypting data in a communication equipment able to exchange data with another data equipment of an equivalent type via at least one communication network entailing modulation/demodulation. This device comprises processing means adapted i) in the event of setting up a call between their called equipment ... 05/03/07 - 20070098160 - Scrambling and self-synchronizing descrambling methods for binary and non-binary digital signals not using lfsrs The invention discloses methods to create binary and n-valued sequences using addressable memory methods. Methods and apparatus to scramble and descramble binary and non-binary sequences using addressable memory methods are also disclosed. The invention further discloses methods using addressable memory to scramble binary and non-binary sequences and corresponding self-synchronizing descrambling ... 03/29/07 - 20070071238 - System and method for providing an indication of randomness quality of random number data generated by a random data service A system and method for providing an indication of randomness quality of random number data generated by a random data service. The random data service may provide random number data to one or more applications adapted to generate key pairs used in code signing applications, for example. In one aspect, ... 01/18/07 - 20070014401 - Random number generation for encrypting cellular communications In wireless communications, transmission devices require continuous supplies of random data for encryption processes. The invention provides a method for generating a continuos pool of truly random data with hardware that is already available in conventional CDMA phones. ... 12/28/06 - 20060291650 - State-varying hybrid stream cipher In one embodiment, a state-varying hybrid stream cipher operating within a computing device. The state-varying hybrid stream cipher comprises at least two software routines. A first routine is responsible for dividing incoming plain text into variable-sized blocks. A second software routine is for converting the plain text into cipher text ... 12/28/06 - 20060291649 - Chaos generator for accumulation of stream entropy A chaos generator for accumulating stream entropy is disclosed. The chaos generator includes a random source coupled to an entropy accumulator that is configurable for generating a binary random input sequence. The entropy accumulator is configurable for accumulating entropy of the input sequence and providing a binary random output sequence ... 11/16/06 - 20060256962 - Systems and methods for producing random number distributions in devices having limited processing and storage capabilities Arbitrary numerical distributions are presented for use in devices having limited processing and storage capabilities by having the device accept strings of arbitrarily distributed numbers from a source outside of the device. In one embodiment, a master controller creates a table of values which follow the desired minimum, maximum, mean, ... 11/09/06 - 20060251250 - Method of generating successions of pseudo-random bits or numbers A method for generating a succession of pseudo-random numbers includes choosing at least one chaotic map, and choosing a seed for the chaotic map and a number of iterations for the chaotic map. The succession of pseudo-random numbers are generated by executing iteratively generating a pseudo-random number as a function ... 11/09/06 - 20060251249 - Adding randomness internally to a wireless mobile communication device A mobile wireless communication device is provided with an integral transducer used to refresh a random data pool without connection to an external source of new random data. ... 10/19/06 - 20060233365 - Random number generator According to one embodiment, a clock generating unit configured to generate a clock having a predetermined frequency, an input value generating unit configured to generate an input value for predetermined encryption algorithm based on a generated clock, and a calculation processing unit configured to generate random number data by executing ... 08/24/06 - 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 ... 08/10/06 - 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). ... 07/13/06 - 20060153376 - Enhanced ansi x9.17 and fips 186 pseudorandom number generators with forward security Disclosed herein are apparatuses and methods for generating pseudorandom numbers by making the existing ANSI and FIPS PRNGs forward secure and eliminating the need for re-keying them. A forward secure ANSI PRNG is created which includes an enhanced block cipher that is non-invertible even if the key becomes known and ... 06/08/06 - 20060120521 - System and method for optimizing error detection to detect unauthorized modification of transmitted data Disclosed is a system and method for optimizing error detection to detect unauthorized modification of transmitted data. The system includes an encrypting device and a decrypting device operatively coupled to the first encrypting device. The encrypting device is configured to re-order and encrypt a first data stream to form a ... 05/18/06 - 20060104443 - Method, apparatus and system for resistance to side channel attacks on random number generators A random number generator (RNG) resistant to side channel attacks includes an activation pseudo random number generator (APRNG) having an activation output connected to an activation seed input to provide a next seed to the activation seed input. A second random number generator includes a second seed input, which receives ... 05/11/06 - 20060098820 - Method and apparatus for generating keystream A method and apparatus for generating a keystream are provided. The method includes: (a) receiving a bitstream comprised of at least 4 bits; (b) selecting at least two bits from the received bitstream; (c) generating an operation value by performing a predetermined bitwise operation on the bits selected in (b); ... 04/27/06 - 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 ... 03/30/06 - 20060067527 - Method for making seed value used in pseudo random number generator and device thereof A seed value making method and device for a PRNG (Pseudo Random Number Generator) are provided. The seed value making method includes the steps of: accumulating in memory units of a First Data Pool data from various external sources, analyzing the data to determine a source type, computing entropy estimations ... 03/30/06 - 20060067526 - Apparatus, and an associated method, for facilitating fast transition in a network system An apparatus, system, computer-readable medium, and method to facilitate quick transition of communications of a mobile station between network stations of a radio communication system, such as a WLAN operable to a variant of an IEEE 802 operating specification, is provided. Implementations of embodiments described herein reduce the transition duration ... 03/16/06 - 20060056625 - Encryption method, encryption apparatus, data storage distribution apparatus and data delivery system Data to be encrypted is effectively encrypted by a data delivery system for encrypting the data to be encrypted with a transmitting apparatus and decrypting a cipher thereof with a receiving apparatus. In a configuration for encrypting and decrypting the data to be encrypted by using a random number sequence ... 03/16/06 - 20060056624 - Transmitter device, transmitting method, receiver device, receiving method, communication system, and program storage medium A memory stores a hash value of content management data. When an IEEE1394 interface authenticates a personal computer connected thereto via a network, the IEEE1394 transmits content management data to the personal computer while receiving a hash data of the content management data from the personal computer. The IEEE1394 interface ... 03/09/06 - 20060050877 - Information processing apparatus and method, program, and recording medium An information processing apparatus and method, program, and recording medium are provided. The information processing apparatus for communicating with another information processing apparatus by wire or wireless, the apparatus includes a random number generating section generating a random number; a first authentication data generating section generating first authentication data regarding ... 02/23/06 - 20060039558 - Pseudo-random number generation method and pseudo-random number generator A bit string obtained by sampling, every the number s, bits of a bit string whose output sequence is M sequence, when the bit number per one cycle of the M sequence is prime to the derived value, constitutes M sequence of a linear feedback shift register having other construction. ... 01/26/06 - 20060018466 - Attack correlation using marked information Techniques are described for providing security to a protected network. Techniques are described for thwarting attempted network attacks using marked information. The attack correlation system provides marked information to computing devices that probe for sensitive information, and monitors subsequent communications for use of the marked information. In one example, the ... 01/05/06 - 20060002550 - Method and system for generation of cryptographic keys and the like A method and system for generating cryptographic keys and similar secret cryptographic inputs that are hard to guess. A seed is input from an entropy source, and an initial composite state is generated as a function of the seed, the initial state comprising a plurality of components. The components include ... 12/29/05 - 20050286718 - Apparatus and method for generating a random number Apparatus for generating a random number includes a sampler that samples a noise signal to obtain a noise signal sample, and a provider that provides at least three noise signal threshold values selected such that a first probability of the noise signal sample being between the first and second threshold ... 11/24/05 - 20050259817 - Method and apparatus for communication efficient private information retrieval and oblivious transfer A method, article of manufacture and apparatus for performing private retrieval of information from a database is disclosed. In one embodiment, the method comprising obtaining an index corresponding to information to be retrieved from the database and generating a query that does not reveal the index to the database. The ... 10/20/05 - 20050232416 - Method and device for determining a result Device for determining a result includes a unit for determining a first and a second intermediate result, wherein the result depends on the first and the second intermediate result, and a unit for randomly determining a sequence in which the unit for determining executes the determination of the first and ... 09/22/05 - 20050207574 - System and method for generating pseudorandom numbers A system that has a pseudorandom number generator and a mapping system. The pseudorandom number generator generates a random number that is mapped by the mapping system to an output value that is selected from a set of predetermined output values. To increase the randomness of the sequence of numbers ... 07/21/05 - 20050157875 - Crytographic communication apparatus A qubit generating unit 40 generates a qubit having a predetermined quantum state. A qubit encoding unit 70 performs quantum encoding of the generated qubit. A first pseudo-random number generating unit 60 generates a first pseudo-random number from secretly shared information 3 which has been secretly shared with the quantum ... 06/09/05 - 20050123133 - Security system and method A first embodiment provides a process and system for simple, secure exchange of random numbers between two devices by combining a random number and a secret code (e.g., password) to generate a first challenge code, extracting the random number using the password at the second device, combining the first random ... ### FreshPatents.com Support |