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US20090323930 |
HIGH-EFFICIENT ENCRYPTION AND DECRYPTION PROCESSING METHOD FOR IMPLEMENTING SMS4 ALGORITHM
An encrypting/decrypting processing method for implementing SMS4 algorithm in high efficiency is provided. After preparing constant array, input external data into register section, firstly make...
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US20090323959 |
Method for producing two-dimensional code reader for reading the two-dimensional code
A method of producing a two-dimensional code having a code area in which data codes coded as codewords are mapped. First type of data codes is mapped in the code area. The first type of data codes...
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US20090323942 |
METHOD FOR PAGE- AND BLOCK BASED SCRAMBLING IN NON-VOLATILE MEMORY
A method and system for programming and reading data with reduced read errors in a memory device. In one approach, date to be written to the memory device is scrambled using a first pseudo random...
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US20090323927 |
Mechanism for chained output feedback encryption
In one embodiment, a mechanism for chained output feedback encryption is disclosed. In one embodiment, a method includes generating a keystream at a block cipher encryption module with inputs of a...
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US20090327751 |
METHOD AND SYSTEM FOR TRANSFORMATION OF LOGICAL DATA OBJECTS FOR STORAGE
A method and system for encrypting a plaintext logical data object for storage in a storage device operable with at least one storage protocol, creating, reading, writing, optimization and...
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US20090323950 |
Image encryption/decryption apparatus, method and program
An image encryption apparatus encrypts a digital image by specifying a partial region from the digital image, converting the selected partial region into a processing image based on an encryption...
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US20090327714 |
System and Method for End-to-End Electronic Mail-Encryption
The present disclosure provides a system and method for end-to-end electronic mail encryption. In one embodiment, the sender contacts a payload-encryption-packet creation server which receives the...
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US20090327141 |
HIGHLY EFFICIENT SECRECY-PRESERVING PROOFS OF CORRECTNESS OF COMPUTATION
Presented are methods and systems for highly efficient proofs of correctness of computations that preserve secrecy of the input values and calculations. One embodiment includes a method for...
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US20090323929 |
Computer-Readable Recording Medium Recording Program and Apparatus For Encryption/Decryption, Apparatus For Multiplication in Extension Field
There is provided a computer-readable recording medium recording a program for encryption/decryption, an apparatus for encryption/decryption, an apparatus for multiplication in an extension field,...
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US20090323932 |
Method and apparatus for encrypting data to facilitate resource savings and detection of tampering
One embodiment of the present invention provides a system that facilitates encrypting data. During operation, the system receives unencrypted data to be encrypted. Next, the system preprocesses the...
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US20090323956 |
ENCRYPTION DEVICE, PROGRAM, AND METHOD
Disclosed is an encryption device for generating a pseudo-random number based on a secret key and generates an encrypted text by applying the pseudo-random number sequence to a plain text, uses, an...
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US20090323938 |
Mechanism for transport-safe codings for cryptographic use
In one embodiment, a mechanism for transport-safe codings for cryptographic use is disclosed. In one embodiment, a method for transport-safe coding for cryptographic use includes converting an...
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US20090323931 |
Data Processing Hash Algorithm and Policy Management
Methods and associated systems for processing data are disclosed. A hashing function sequentially processes a hash key to generate a hash value. A policy management system processes packets...
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US20090323928 |
ITEM TRACING WITH SUPPLY CHAIN SECRECY USING RFID TAGS AND AN IDENTITY-BASED ENCRYPTION SCHEME
A method for tracing an item may include encrypting item information using an identity-based encryption scheme with a batch number for an item as an encryption key and communicating the encrypted...
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US20090316885 |
NATURAL LANGUAGE DEPENDENT STREAM CIPHERS
A natural language dependent stream cipher is provided to increase complexity of stream cipher encryption. In one aspect, a message is received from a sender as an input in a first natural language...
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US20090319801 |
Security-Enhanced Storage Devices Using Media Location Factor in Encryption of Hidden and Non-Hidden Partitions
Methods and devices for increasing or hardening the security of data stored in a storage device, such as a hard disk drive, are described. A storage device provides for increased or hardened...
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US20090316901 |
SECRET COMMUNICATION METHOD AND SECRET COMMUNICATION DEVICE THEREOF
A secret communication method and a communication device used in the method are provided for secret communication using communication path less frequently as a whole while avoiding a duplicative...
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US20090316884 |
DATA ENCRYPTION METHOD, ENCRYPTED DATA REPRODUCTION METHOD, ENCRYPTED DATA PRODUCTION DEVICE, ENCRYPTED DATA REPRODUCTION DEVICE, AND ENCRYPTED DATA STRUCTURE
An encrypted data production device ( 101 ) encrypts encryption object data including a plurality of frame data in a cipher block chaining mode using a cipher chaining unit of an arbitrary data...
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US20090316906 |
METHOD OF VERIFYING THE INTEGRITY OF AN ENCRYPTION KEY OBTAINED BY COMBINING KEY PARTS
The method of verifying the integrity of an encryption key (K) obtained by combining at least two key portions (KM, M) in a protected zone ( 3 ) by using a commutative operator, comprises the steps...
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US20090310778 |
VARIABLE-LENGTH CIPHER SYSTEM AND METHOD
Systems and methods for enciphering data are provided. In one embodiment, information is enciphered using a variable block length cipher that returns the encrypted symbol set in the same format as...
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US20090310775 |
Using a single instruction multiple data (SIMD) instruction to speed up galois counter mode (GCM) computations
In one embodiment, an encryption operation may be performed by obtaining a product of a carry-less multiplication using multiple single instruction multiple data (SIMD) multiplication instructions...
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US20090310776 |
INFORMATION CONCEALMENT METHOD AND INFORMATION CONCEALMENT DEVICE
An information concealment method comprising: a splitting step to split information into an encryption segment to be encrypted and a non-encryption segment not to be encrypted according to a...
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US20090304185 |
METHOD OF TRACING DEVICE KEYS FOR BROADCAST ENCRYPTION
Provided are a method of tracing a device key in a user key management system using a hierarchical hash chain broadcast encryption scheme (HBES) algorithm, a user key management system for...
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US20090304179 |
SYSTEM AND METHOD TO PRECLUDE MESSAGE MODIFICATION IN DATA AUTHENTICATION SYSTEMS THROUGH EFFICENT USE OF FEEDBACK IN CRYPTOGRAPHIC FUNCTIONS
A data hashing system operative to hash an incoming string of message words, thereby to generate a hash value tag comprising a deterministic random number string which uniquely identifies the...
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US20090304180 |
KEY EVOLUTION METHOD AND SYSTEM OF BLOCK CIPHERING
A system and associated method for block ciphering. The method generates a key that is specific to a text block being encrypted and later being decrypted. The text block is encrypted by a block...
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US20090296928 |
Pseudorandom number generating system, encryption system, and decryption system
The present invention provides a pseudorandom number generating system, an encryption system, and a decryption system. The pseudorandom number generating system of the present invention repeatedly...
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US20090296923 |
Signature generation apparatus and signature verification apparatus
A signature generation apparatus generates a signature for a message m from the i-th user, and computes any two or three of a[1] μ[x] (mod n), a[2] μ[s] (mod n), and w μ[t] (mod l) are in...
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US20090300349 |
VALIDATION SERVER, VALIDATION METHOD, AND PROGRAM
A validation server using HSM, which reduces required process time from receiving a validation request to responding with a validation result, and comprises a first software cryptographic module ...
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US20090296931 |
Method for encryption and decryption of messages
A communication system that includes a sender computer and plurality of designated receiver computers coupled to the sender through a communication link. Each one of the receiver computers is...
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US20090296922 |
WATERMARKING COMPUTER CODE BY EQUIVALENT MATHEMATICAL EXPRESSIONS
A method of embedding information in a computer program code, including a plurality of program statements. The method comprises: parsing the computer program code to identify at least one program...
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US20090300367 |
ELECTRONIC CERTIFICATION AND AUTHENTICATION SYSTEM
The invention is an automated system that works in the data center of certification offices connected to the internet which enables a member of the any of the certification offices to certify his...
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US20090290704 |
METHOD FOR PROTECTING A CAP FILE FOR AN IC CARD
A method for protecting a CAP file including one or more applets to be installed in an IC Card, includes the applets encoding into the CAP file by a CAP file provider. The method also includes the...
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US20090285388 |
Cryptographic Method with Elliptical Curves
A method determines an elliptical curve, suitable for a cryptographic method. An elliptical curve to be tested is prepared. The order of a twisted elliptical curve associated with the elliptical...
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US20090285386 |
Apparatus for Generating Elliptic Curve Cryptographic Parameter, Apparatus for Processing Elliptic Curve Cryptograph, Program for Generating Elliptic Curve Cryptographic Parameter, and Program for Processing Elliptic Cryptograph
A prime number generation unit 110 generates an integer r having a form suitable for fast elliptic curve pairing computation, by using a processing device (S 302 to S 303 ). The prime number...
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US20090282249 |
PROCESS FOR ESTABLISHING A SECRET KEY
A method for establishing a secret key for a data transmission between communication partners in a network, in particular in a personal area network (PAN), or in a body area network (BAN), wherein...
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US20090279692 |
FAST COMPUTATION OF ONE-WAY HASH SEQUENCES
Some embodiments of the present invention provide a system that computes a target secret S t in a sequence of secrets S 0 . . . S n . During operation, the system obtains k hash functions h 1 , ....
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US20090279694 |
PRIVACY-PRESERVING SCALAR PRODUCT CALCULATION SYSTEM, PRIVACY-PRESERVING SCALAR PRODUCT CALCULATION METHOD AND CRYPTOGRAPHIC KEY SHARING SYSTEM
A privacy-preserving scalar product calculation system is provided. A first unit linearly transforms an n-dimensional vector Va into an n-dimensional vector based on a scalar value based on a...
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US20090279687 |
CRYPTOGRAPHIC OPERATION PROCESSING CIRCUIT
A dummy operation instruction circuit ( 100 ) is provided for issuing a dummy operation instruction ( 113 ) to a cryptographic control circuit ( 101 ) instead of a CPU ( 109 ) or the like after...
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US20090279690 |
CRYPTOGRAPHIC SYSTEM INCLUDING A MIXED RADIX NUMBER GENERATOR WITH CHOSEN STATISTICAL ARTIFACTS
A cryptographic system ( 1000 ) is provided. The cryptographic system includes a data stream receiving means (DSRM), a number generator (NG), a mixed radix accumulator (MRA) and an encryptor. The...
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US20090279689 |
SYSTEM AND METHOD OF AUTHENTICATION
Disclosed herein are systems, methods and computer readable media for performing authentication. The proposed scheme utilizes new algorithms that introduce randomness using a physical value for...
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US20090279688 |
CLOSED GALOIS FIELD CRYPTOGRAPHIC SYSTEM
A cryptographic system (CS) comprised of generators ( 502 ), ( 504 ), ( 510 ), an encryption device (ED), and a decryption device (DD). The generator ( 502 ) generates a data sequence (DS)...
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US20090279693 |
METHOD AND A DEVICE FOR GENERATING A PSEUDORANDOM STRING
The invention relates to a method of generating a pseudorandom string of terms belonging to a finite body K of cardinal q≧2 intended to be used in a cryptography procedure, said method comprising...
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US20090279691 |
SECURE DISTRIBUTION OF DATA OR CONTENT USING KEYLESS TRANSFORMATION
A computer enabled method and apparatus for encrypting and decrypting data using a keyless transformation cryptographic technique. Data is protected using a keyless (unkeyed) complex mathematical...
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US20090274294 |
DATA COMPRESSION APPARATUS AND DATA DECOMPRESSION APPARATUS
In a first data compression process, a compressed code of an input symbol is generated in accordance with a compression dictionary selected on the basis of P symbols immediately preceding the input...
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US20090276628 |
DIGITAL CONTENT DECRYPTING APPARATUS AND OPERATING METHOD THEREOF
A device and method for decrypting digital contents are discussed. According to an embodiment, a method for decrypting digital content at a target device, includes receiving the digital content...
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US20090268900 |
SIGNED MONTGOMERY ARITHMETIC
A system and method configured for applying Montgomery style reduction directly to negative quantities as well as positive values, producing the new form which does not require conditional...
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US20090268913 |
TIMING ADJUSTMENT FOR SESSION SECURITY PROTOCOL
According to certain embodiments of the present invention, cryptosynchronization values are calculated on an initiating and/or responding device in a communications system such that...
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US20090265560 |
Numbering Method, Numbering Device, and Laser Direct Drawing Apparatus
An object is to give an identification number which is hard to guess from the previous and next identification numbers without overlap, to give an identification number by using a simple program,...
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US20090257593 |
METHOD AND APPARATUS FOR SECURE MESSAGING
A network-based method for secure messaging is performed by: receiving a message sent by a sender to a recipient with a store-and-forward protocol, at a network location. The received message is...
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US20090257583 |
CIPHER FEEDBACK WITH VARIABLE BLOCK CHAINING
Some embodiments of a method and apparatus for encrypting and decrypting data have been presented. In one embodiment, a current initialization vector (IV) is generated based on a previous block of...
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