|
Match
|
Document |
Document Title |
|
|
7620821 |
Processor including general-purpose and cryptographic functionality in which cryptographic operations are visible to user-specified software
A processor including general-purpose and cryptographic functionality, in which cryptographic operations are visible to user-specified software. According to one embodiment, a processor may include...
|
|
|
7616766 |
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...
|
|
|
7613297 |
Method and apparatus for data encryption
A method and apparatus for use in encrypting and decrypting digital communications converting an initial block to final block based on freely selectable control information and secret key...
|
|
|
7613296 |
M6 block cipher system and method for encoding content and authenticating a device
An M 6 block cipher system and method for encoding content and authenticating a device may use an M 6 core. The M 6 block cipher system may include a rotate constant selector selecting one or...
|
|
|
7606388 |
Contents border detection apparatus, monitoring method, and contents location detection method and program and storage medium therefor
A contents border detection apparatus and monitoring method. The apparatus comprises a digital watermark detector for detecting a digital watermark embedded in contents for which a time element is...
|
|
|
7606369 |
Process for establishing a common cryptographic key for N subscribers
A process is described which can be used to generate a cryptographic key for a group of subscribers whose number is subject to change. The process can further provide that even after the group key...
|
|
|
7606368 |
Method and apparatus for data encryption
A method and apparatus for use in encrypting and decrypting digital communications converting an initial block to final block based on freely selectable control information and secret key...
|
|
|
7606361 |
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...
|
|
|
7603558 |
Montgomery transform device, arithmetic device, IC card, encryption device, decryption device and program
According to an aspect of the invention, Montgomery arithmetic can be achieved while omitting division in an input stage. That is, the aspect of the invention is configured to obtain a Montgomery...
|
|
|
7602916 |
Access-protected data carrier
The invention relates to a data carrier having a semiconductor chip ( 5 ) with at least one memory. The memory contains an operating program that is able to perform at least one operation (h). In...
|
|
|
7602905 |
Processes, circuits, devices, and systems for encryption and decryption and other purposes, and processes of making
A wireless communications device ( 110 ) has a digital section ( 800 ) and a radio frequency section ( 840 ). The digital section ( 800 ) does setup and execution on a set of data in at least first...
|
|
|
7602904 |
Order invariant fuzzy commitment system
A system provides an order-invariant fuzzy commitment scheme. In an exemplary embodiment, the scheme includes receiving a first set of elements and selecting a polynomial for encoding an item under...
|
|
|
7600134 |
Theft deterrence using trusted platform module authorization
A method for theft deterrence of a computer system is disclosed. The computer system includes a trusted platform module (TPM) and storage medium. The method comprises providing a binding key in the...
|
|
|
7599491 |
Method for strengthening the implementation of ECDSA against power analysis
A method of inhibiting the disclosure of confidential information through power analysis attacks on processors in cryptographic systems. The method masks a cryptographic operation using a generator...
|
|
|
7599490 |
Method and apparatus for data encryption
A block cipher device for a cryptographically secured digital communication system includes a pair of first stages connected in parallel for receiving an input data block and a control data block....
|
|
|
7599489 |
Accelerating cryptographic hash computations
Provided is an apparatus and method for accelerating cryptographic hash computations. For example, in a cryptographic hash computation such as SHA-1, multiple execution units in a processor can...
|
|
|
7596703 |
Hidden data backup and retrieval for a secure device
An agent computer system, acting on behalf of the user, provides the personal information to various wide area network sites for conducting online transactions. A user has a secure device with a...
|
|
|
7596270 |
Method of shuffling text in an Asian document image
A method, system, and computer-readable medium containing computer-executable instructions are provided, for randomly relocating text character images of a scanned-in Asian character document to...
|
|
|
7594261 |
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...
|
|
|
7594119 |
System for managing time rights linked to a digital content
A system for detecting the time exceeding conditions of at least one application being executed by a processor, including: an element for storing time conditions, the conditions being sorted by...
|
|
|
7593529 |
Scramble methods and apparatus for packetized digital video signal in conditional access system
A conditional access scrambling or encryption technique for a packetized digital data stream, e.g., a MPEG-2 bitstream, (1) by scrambling or encrypting the data payload of selective transport...
|
|
|
7593527 |
Providing digital signature and public key based on shared knowledge
A public key and digital signature is provided using a private key of a public-private key pair in an elliptic curve digital signature algorithm (ECDSA) by: identifying domain parameters of an...
|
|
|
7593525 |
Patternless encryption and decryption system and method
A system for converting a message into a patternless encrypted message. The message includes a plurality of message elements. The system includes encryption software, which comprises an encryption...
|
|
|
7590236 |
Identity-based-encryption system
Systems and methods for supporting symmetric-bilinear-map and asymmetric-bilinear-map identity-based-encryption (IBE) key exchange and encryption schemes are provided. IBE key exchange schemes use...
|
|
|
7590235 |
Reduction calculations in elliptic curve cryptography
An Elliptic Curve Cryptography reduction technique uses a prime number having a first section of Most Significant Word “1” states, with N=n m-1 +N 1 B+n 0 and a second section with a plurality...
|
|
|
7584363 |
Fair blind signature process
In a fair blind signature process, a user interacts with a signer in order to complete a 7-tuple (A,e,s,t,x u ,x,m) such that A e =a 0 a 1 x a 2 m a 3 x u a 4 t a 5 s (mod n), where a 0 , a 1 , a...
|
|
|
7581093 |
Hitless manual cryptographic key refresh in secure packet networks
In a hitless manual cryptographic key refresh scheme, a state machine may be independently maintained at each network node. The state machine may include a first state, a second state, and a third...
|
|
|
7577255 |
Proxy method and system for secure wireless administration of managed entities
A method, system and apparatus are described for avoiding the use of a web-server or generic security when providing network administration services remotely to managed entities using wireless...
|
|
|
7574600 |
System and method for combining user and platform authentication in negotiated channel security protocols
A security protocol for combining user and platform authentication. The security protocol includes a first handshake phase to issue attestation identity credentials, and a second handshake phase to...
|
|
|
7571324 |
Method and device for anonymous signature with a shared private key
A cryptographic method and apparatus for anonymously signing a message. Added to the anonymous signature is another signature which is calculated (operation 13 ) using a private key common to all...
|
|
|
7570760 |
Apparatus and method for implementing a block cipher algorithm
An apparatus and method for implementing a block cipher algorithm. In one embodiment, a cryptographic unit configured to implement a block cipher algorithm may include state storage configured to...
|
|
|
7570759 |
System and method for secure encryption
A method for encrypting a message containing a plurality of message segments is described. First, a key is input into a SHA function to generate a first hash value. Then, a first message segment is...
|
|
|
7567999 |
Device and method for calculating a result of a division
A device for calculating a result or an integer multiple of the result of a division of a numerator by a denominator includes a unit for providing a factor which is selected such that a product of...
|
|
|
7567668 |
Calculating unit and method for performing an arithmetic operation with encrypted operands
A calculating unit for performing an arithmetic operation with at least two operands, the at least two operands being encrypted, includes an arithmetic-logic unit with a first input for the first...
|
|
|
7565552 |
Method for protecting against manipulation of a controller for at least one motor vehicle component and controller
The invention relates to a method for protecting against manipulation of a controller for at least one motor vehicle component, the control device ( 1 ) comprising at least one microcomputer (μC)...
|
|
|
7564970 |
Exponential data transform to enhance security
A data input is divided into two segments. The second segment is raised to a power of a function of the first segment, the power being relatively prime to a function of a predefined modulus. The...
|
|
|
7561689 |
Generating keys having one of a number of key sizes
An apparatus is disclosed for generating keys having one of a number of key sizes. Memory sections of a memory element are adapted to store a portion of a key. The memory element has a size at...
|
|
|
7561688 |
Embedding supplementary data in an information signal
Disclosed is a method of adjusting a supplementary data signal (wm(n)) to be embedded in an information signal (x(n)), for example an audio signal. The method comprises the steps of determining (...
|
|
|
7555646 |
Efficient implementation of zero knowledge protocols
An efficient implementation of zero knowledge protocols for authentication of devices and for identification of devices connecting to a network. According to one aspect, the present invention...
|
|
|
7555126 |
Game apparatus managing system, game apparatus, controlling method, computer program and recording medium
A license managing apparatus comprises an inputting device, an encrypting device for encrypting information inputted from the inputting device to produce encrypted information, and an outputting...
|
|
|
7555121 |
Methods and apparatus for implementing a cryptography engine
Methods and apparatus are provided for implementing a cryptography engine for cryptography processing. A variety of techniques are described. A cryptography engine such as a DES engine running at a...
|
|
|
7552164 |
Accelerated prime sieving using architecture-optimized partial prime product table
This embodiment teaches a variation of GCD-based sieving, building tables of prime products, but intentionally restricting the size of table entries to fit within a single machine word. This...
|
|
|
7551740 |
Weighted secret sharing and reconstructing method
A weighted secret sharing and reconstructing method includes encoding the secret using a predetermined code, producing voices so that different weights are assigned to errors in an error vector...
|
|
|
7551737 |
Cryptographic keys using random numbers instead of random primes
A system and method for providing cryptographic keys which are usable in a network of connected computer nodes applying a signature scheme. The method employs: generating a random secret key usable...
|
|
|
7545932 |
Secure authenticated channel
A protocol (i.e. method) and corresponding apparatuses for calculating a session key. Two peers with knowledge of a common Diffie-Hellman permanent key, K perm , and the identity and public key of...
|
|
|
7545928 |
Triple DES critical timing path improvement
Improved security processing circuits are discussed which may be used alone or as part of a network interface device of a host system using a DES engine to accomplish 3DES processing. The security...
|
|
|
7539305 |
Schryption method and device
A schryption of a text message is based on a schryption key for defining one or more aspects of an encryption and/or a decryption of the text message. For an encryption of the text message, the...
|
|
|
7536011 |
Tamper-proof elliptic encryption with private key
An encryption device performs elliptic curve encryption using a secret key. The encryption device includes an operation unit for performing scalar multiplication of a point on an elliptic curve a...
|
|
|
7532726 |
Encryption/decryption device and method, encryption device and method, decryption device and method, and transmission/reception apparatus
The encryption/decryption device includes: a data structure analysis block for receiving encrypted data or data to be encrypted and outputting control data and also the encrypted data or the data...
|
|
|
7532722 |
Apparatus and method for performing transparent block cipher cryptographic functions
The present invention provides an apparatus and method for performing cryptographic operations on a plurality of input data blocks within a processor. In one embodiment, an apparatus for performing...
|