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7386130 |
Encryption secured against DPA
The encryption device includes a random number generator for generating a random number; and a first selector for selecting one of q fixed values in response to the random number, a second selector...
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7386131 |
Tolerant digital certificate distribute system and distribute method
A digital certificate issuing system with intrusion tolerance ability and the issuing method thereof are disclosed. The system comprises an offline secret key distributor, at least one online task...
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7386123 |
Method of implementing in an electronic component a cryptographic algorithm for finding the public exponent
The invention concerns a method for implementing in an electronic component a cryptographic algorithm using calculating means. The invention is characterized in that it consists in carrying out the...
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7382875 |
Cryptographic method for distributing load among several entities and devices therefor
The invention concerns a cryptographic method whereby a second entity (B) verifies by means of a public key, a proof provided by a first entity (A), which consists in the generation by the first...
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7382876 |
Hash function constructions from expander graphs
Hash function constructions from expander graphs are described. In one aspect, an expander graph is walked to compute a hash function. The expander graph is walked using respective subsets of an...
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7382481 |
Image communication device, method of communicating image, program and recording medium
An image communication device transmitting image information selectively generates a transmission-result report, where the contents of the transmission-result report vary depending on selected...
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7379546 |
Method for XZ-elliptic curve cryptography
Given a set of elliptic curve points defined over a field F(p) and represented in projective coordinate, a method is presented which allows the embedding of data bits in both the X-coordinate and...
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7380132 |
Data recording method and apparatus, data record medium and data reproducing method and apparatus
An input is ciphered in at least one of a sector forming circuit 13 , a scrambling circuit 14 , a header appendage circuit 15 , an error correction encoding circuit 16 , a modulation circuit ...
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7376685 |
Apparatus and method for computing SHA-1hash function
An apparatus and method for computing a SHA-1 hash function value are provided. The apparatus includes a first register unit including a plurality of registers that store a first bit string of...
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7376233 |
Video slice and active region based multiple partial encryption
A selective encryption encoder and method of dual selective encryption. The selective encryption encoder has a packet identifier that identifies packets of at least one specified packet type, the...
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7372963 |
Device for compression and encryption, and device for decompression and decryption
To reduce processing load or processing time required for compression and encryption of data. Data to be compressed, such as image data, is divided into specified block sizes by am image divider (...
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7372960 |
Method and apparatus for performing finite field calculations
In general terms, the invention provides a finite field engine and methods for operating on elements in a finite field. The finite field engine provides finite field sub-engines suitable for any...
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7369657 |
Cryptography accelerator application program interface
Methods and apparatus are provided for making function calls to various cryptography accelerators. An application program interface abstraction layer coupled to a cryptography accelerator receives...
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7369658 |
Secure modulation and demodulation
A system and method are disclosed for securely transmitting and receiving a signal. A nonlinear keying modulator is used in the transmitter to encrypt the signal using a nonlinear keying modulation...
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7366299 |
Method for encrypting and decrypting data using derivative equations and factors
A data cryptographer encrypts and decrypts character data of any given length using derivative equations and factors. The use of factors and derivative equations introduces the randomness required...
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7366305 |
Platform and method for establishing trust without revealing identity
One aspect of an embodiment of the invention provides a method and platform to prove to a challenger that a responder device possesses cryptographic information from a certifying manufacturer. This...
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7362863 |
DES hardware throughput for short operations
A symmetric key cryptographic method is provided for short operations. The method includes batching a plurality of operation parameters ( 1503 ), and performing an operation according to a...
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7362866 |
Method for determining encryption algorithm of secret communication based on mobile country codes
The present invention discloses a method for determining encryption algorithm used in security communication based on Mobile Country Code (MCC) number. In this method, a Mobile Country Code (MCC)...
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7359508 |
Method of securely implementing a cryptography 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...
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7359507 |
Server-assisted regeneration of a strong secret from a weak secret
Methods for regenerating a strong secret for a user, based on input of a weak secret, such as a password, are assisted by communications exchanges with a set of independent servers. Each server...
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7356688 |
System and method for document distribution
Methods for transferring among key holders in encoding and cryptographic systems the right to decode and decrypt messages in a way that does not explicitly reveal decoding and decrypting keys used...
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7352860 |
Method of encipherment by permutations of fixed-length sequences
A method of enciphering information constituted by a finite sequence {S 1 ,S 2 , . . . ,S N } of N symbols (S 1 ,S 2 , . . . ,S N ) selected from an alphabet A. There are defined both a secret...
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7353384 |
Collapsing chained credentials
An intermediate entity can generate a necessary credential to allow two other entities to bypass the intermediate entity when establishing communications between two other entities in a computing...
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7350082 |
Upgrading of encryption
A method of upgrading an encryption process for encryption of video information from an old encryption process to a new encryption process, consistent with certain embodiments involves selecting a...
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7349545 |
Key agreement method in secure communication system using multiple access method
A key agreement method for secure communication in a multiple access system is provided. A key agreement method for secure communication in a multiple access system, the key agreement method...
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7349537 |
Method for data encryption in an ethernet passive optical network
One embodiment of the present invention provides a system that decrypts downstream data in an Ethernet passive optical network (EPON). During operation, the system receives a data frame which is...
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7346472 |
Method and device for monitoring and analyzing signals
A method and system for monitoring and analyzing at least one signal are disclosed. An abstract of at least one reference signal is generated and stored in a reference database. An abstract of a...
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7346159 |
Generic modular multiplier using partial reduction
An apparatus multiplies a first and a second binary polynomial X(t) and Y(t) over GF(2), where an irreducible polynomial M m (t)=t m +a m−1 t m−1 +a m−2 t m−2 t m−2 + . . . +a 1 t+a 0 ,...
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7346161 |
Method and apparatus for designing cipher logic, and a computer product
An optimization processing unit optimizes an input and output bit number of an S-box based on parameters inputted from an input unit. The examples of the parameters are memory capacity of a primary...
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7346160 |
Randomization-based encryption apparatus and method
A method for encryption data subdivided into segments of random lengths. A data source having a state corresponding to initialization parameters and the number of patterns output therefrom provides...
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7343011 |
Secure telecommunications system for wireless local area networks
A security mechanism suitable for wireless local area networks is disclosed that exhibits a reasonable trade-off between computation speed and resistance to attack. The illustrative embodiment can...
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7340606 |
Digital certificates
A method for producing a certificate, the certificate including data, the method including choosing a seed s, the seed s including a result of applying a function H to the data, generating a key...
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7340053 |
Cipher strength estimating device
This invention intends to reduce the amount of calculation required by a cipher strength estimating device for estimating a ciphertext in collectively finding session keys for plural rounds of...
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7340054 |
Information processing method, decrypting method, information processing apparatus, and computer program
An information processing method, decrypting method, information processing apparatus, and computer program are provided. An information processing method generates a hierarchical tree used to...
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7336783 |
Cryptographic systems and methods supporting multiple modes
Cryptographic systems and methods that support multiple modes of operation, such as CBC, CTR and/or CCM modes. In one aspect, a method for encrypting data includes reading a plaintext data block...
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7330980 |
Method of and system for encrypting digital data, method of and apparatus for reproducing digital data, and computer product
There is provided an input unit which reads copyright digital data stored in a recording medium such as a CD-ROM, an operation unit which performs encryption of digital data based on an encryption...
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7328344 |
Authority-neutral certification for multiple-authority PKI environments
A method for facilitating electronic certification, and systems for use therewith, are presented in the context of public key encryption infrastructures. Some aspects of the invention provide...
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7325129 |
Method for altering encryption status in a relational database in a continuous process
A method for altering encryption status in a relational database in a continuous process, wherein at least one table of said database comprises at least one base area and at least one maintenance...
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7324648 |
Method and apparatus for secure key delivery for decrypting bulk digital content files at an unsecure site
Rather than downloading each content document on demand from the publisher location to the user site, at the publisher location, each content document is encrypted and then multiple encrypted...
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7321659 |
Simple universal hash for plaintext aware encryption
A simple universal hash apparatus and method include input means for inputting at least one of a plurality of Plaintext blocks into an integrity aware encryption scheme using at least one of two...
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7321658 |
Padding application method ensuring security of cryptosystem and encryptor/decryptor
An encryptor/decryptor capable of achieving secure cryptographic communication by applying appropriate padding to a cryptosystem such as NTRU cryptosystems. When an n-bit plaintext M is received,...
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7319751 |
Data encryption
A method of encrypting a data unit, the method comprising the steps of dividing the data unit into a series of data blocks, and for each data block, applying a block cipher function to a data block...
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7319750 |
Digital circuit apparatus and method for accelerating preliminary operations for cryptographic processing
A digital circuit apparatus and method for cryptographic data processing includes steps and means for determining a first modulus having up to a first number of binary digits. A large integer is...
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7318160 |
Cryptographic key setup in queued cryptographic systems
A method is disclosed for performing cryptographic tasks, that include key setup tasks and work data processing tasks. This method comprises the steps of processing the key data in a first...
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7317794 |
Enciphering and deciphering apparatus, and enciphering and deciphering method
The present invention aims at providing a novel enciphering and deciphering apparatus and an enciphering and deciphering method related thereto, which are respectively capable of contracting the...
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7313235 |
Device and method of applying a parity to encrypt data for protection
A device and method of applying a parity to encrypt data for protection is disclosed. A parity generator generates a parity bit in accordance with a data to be outputted. A first parity location...
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7313234 |
Communication device, communication system, and algorithm selection method
An encryption information determination section in a communication device negotiates an encryption algorithm to be used for encrypted communications with an encryption information determination...
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7310421 |
Particular plaintext detector
An object is to enhance the difficulty in decrypting ciphertext. In order to do input into an encryption algorithm that receives plaintext to output ciphertext, a particular plaintext detector for...
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7308097 |
Digital signature and authentication method and apparatus
A method, system and apparatus for performing user identification, digital signatures and other secure communication functions in which keys are chosen essentially at random from a large set of...
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7308096 |
Elliptic scalar multiplication system
In scalar multiplication method in which a point on an elliptic curve is randomized, but yet scalar multiplication can be calculated by the computational cost as much as that without randomization,...
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