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6957329 System for encrypting data from multiple multimedia applications and method thereof  
Methods and systems are provided for encrypting data from a plurality of multimedia devices. A driver initiates authentication for the plurality of multimedia applications. The driver assigns a key...
6947556 Secure data storage and retrieval with key management and user authentication  
Methods, systems and computer program products are provided which provide for controlling access to digital data in a file by encrypting the data with a first key, encrypting the first key with a...
6940975 Encryption/decryption apparatus, encryption/decryption method, and program storage medium therefor  
A pair of a pattern of a mask and a mask pattern obtained by bit inversion of the mask is prepared for each round function in a data scrambler. Every time encryption is to be performed, one mask...
6914984 Encryption apparatus using data encryption standard algorithm  
An encryption device eliminates data contention and minimizes area by accessing twice data for a given time by using a memory device of two times faster access time. The encryption device for...
6914985 Method and system for presentation and manipulation of PKCS enveloped-data objects  
A method and system for processing enveloped data objects in a data processing system. The enveloped data object may be formatted as defined by PKCS (Public Key Cryptography Standard) standards. An...
6895506 Secure storage and execution of processor control programs by encryption and a program loader/decryption mechanism  
A method and a mechanism for securely storing and executing a program in a computer system processing unit, including a storage unit for storing an encrypted version of the program and a...
6891950 Extended key generator, encryption/decryption unit, extended key generation method, and storage medium  
There are disclosed an extended key generator, encryption/decryption unit, and storage medium, in which as each of key transform functions, a transform process is done by an S box (substitution...
6889322 Identification protocols  
In a method for verifying, by a verifier, that a prover has access to a private key associated with a public key Kp, in which the method comprises the prover generating a random number R and...
6889208 Contents sale system  
In a contents sale system, original contents data are encrypted into encryption-resultant contents data in response to original playback key data. The original playback key data are encrypted into...
6880080 Method to provide authorization from a certifying authority to a service provider using a certificate  
A method for use in telecommunication environment that provides authorization by a certifying authority to a service provider whereby the service provider is allowed to execute predefined...
6857075 Key conversion system and method  
The present invention is a key conversion system for deterministically and reversibly converting a first key value of a first communications system into a second key value of a second communication...
6836843 Access control through secure channel using personal identification system  
A security system based on a tamper resistant badge that becomes deactivated if the badge is removed from the person authorized to wear the badge. The badge has a volatile memory for storing the...
6834112 Secure distribution of private keys to multiple clients  
A private key may be securely distributed to a user of a remote client computer over an insecure channel. The user's private key is transmitted to the client from a remote server in an encrypted...
6831979 Cryptographic accelerator  
A cryptographic accelerator for handling instruction-intensive bit permutations. The cryptographic accelerator comprises a selector and a plurality of buses coupled to the selector. Herein, at...
6826691 Arrangement for encryption/decryption of data and data carrier incorporating same  
An arrangement ( 6 ) for encrypting/decrypting data includes a random access memory ( 12 ) for holding the data and a processor ( 10 ) for processing the data. The processor includes a memory map...
6801625 Apparatus and method for stripping parity bits from an input stream  
The disclosed parity stripping technique quickly and efficiently converts a multi-byte input stream having parity bits to an output data stream that contains the same data as the input stream but...
6779111 Indirect public-key encryption  
A system and method for encrypting data communications between a client and server utilizes an untrusted proxy server to perform computationally expensive encryption calculations which would...
6778667 Method and apparatus for integrated ciphering and hashing  
A cryptography unit having a cipher unit and a hash unit coupled in parallel for simultaneous ciphering and hashing. The cipher unit implements a cipher algorithm that operates on a data block...
6769063 Data converter and recording medium on which program for executing data conversion is recorded  
A plurality of round processing parts ( 38 ) are provided each of which contains a nonlinear function part ( 304 ), and each nonlinear function part ( 304 ) comprises: a first key-dependent linear...
6766024 Data communication system  
A system for decrypting an encrypted message comprises first and second decryption devices, the first decryption device having a higher security than the second decryption device. The system...
6760438 System and method for Viterbi decoding on encrypted data  
A system and method for Viterbi decoding on encrypted data is disclosed. At the receiver, maximum likelihood decoding is performed based on received input in the encryption domain. When selecting a...
6760840 File editing system and shared file editing system with file content secrecy, file version management, and asynchronous editing  
A file editing system that provides a high file content secrecy, a file version management, and an asynchronous editing is disclosed. For a high file content secrecy, the block data of files...
6735693 Disk drive comprising encryption circuitry selectively enabled by verifying a circuit that provides plaintext data  
A disk drive comprising a disk for storing encrypted data is disclosed. The disk drive comprises a first circuit for providing plaintext data to a second circuit. The second circuit comprises...
6735310 Technique of password encryption and decryption for user authentication in a federated content management system  
A technique for password encryption and decryption for user authentication in a federated content management system. One or more commands are executed in a computer to perform a datastore operation...
6732271 Method of deciphering ciphered data and apparatus for same  
A method of deciphering ciphered data in which in parallel to a deciphering process for first ciphered data, a first chaining value to be used for deciphering second ciphered data is generated, by...
6683954 Key encryption using a client-unique additional key for fraud prevention  
Encryption of a key using another key that is unique and particular to a given client is disclosed. In one embodiment, a computer-implemented method determines a first key that is unique and...
6631471 Information processing equipment  
A relation between the data process contents in an IC card chip and the consumption current of the IC card chip is reduced. Prior to executing an input data process of the IC card chip, the input...
6587842 Software-based protection system for software products distributed on copyable media, or downloaded over a communications link  
Computer software can be secured so that it only operates on a customer system that has a protection file that is unique to the system. The software is inoperable when copied to other systems, even...
6570988 Simple technique for implementing a cryptographic primitive using elementary register operations  
A technique which implements a primitive for computing, e.g., a checksum. Specifically, this primitive replaces a mod(M) operation with a series of simple elementary register operations. These...
6553120 Method for data decorrelation  
Method for the cryptography of data recorded on a medium usable by a computing unit in which the computing unit processes an input information x using a key for supplying an information F(x)...
6549622 System and method for a fast hardware implementation of RC4  
The system and method of the present invention facilitates encrypting and decrypting files using a fast hardware implementation of the RC4 method to enable secure access to information resources in...
6542607 Device and method for the cryptographic processing of a digital data stream presenting any number of data  
A digital data stream comprises an arbitrary number of data block (P n ). For a data block, a first processing element (B 1 n) is provided that contains at least one first logic unit (VK 1 ), an...
6537747 Data transmission using DNA oligomers  
The present invention is directed to methods for (a) encrypting information in the form of words, numbers, or graphical images, by obtaining a set of nucleic acid strands or nucleic acid analog...
6510349 Adaptive data security system and method  
A system and method for data communication with adaptive security in which a send host transmits a data stream to a receive host in packets which contain an authentication data block with an...
6504930 Encryption and decryption method and apparatus using a work key which is generated by executing a decryption algorithm  
In a scrambler used in the transmission side, a decryptor for generating a work key from a data key and system keys uses the same decryption algorithm as that used in a decryptor for encryption in...
6496582 Information processing apparatus and method therefor  
An information processing apparatus (and a method therefor) forms inputted digital information data into blocks which each correspond to a plurality of samples, orthogonally transforms the block...
6490687 Login permission with improved security  
A login permission method improving network security and efficiently performing a login process is disclosed. In a host-based network, information required for outside login is previously...
6466669 Cipher processor, IC card and cipher processing method  
The present invention can be applied to a cipher processing apparatus, which includes a function F having a configuration of repeating process and inside of the function F, a function f having a...
6408074 Hardware architecture for a configurable cipher device  
A cipher device that can be configured to execute different types of cryptographic algorithms and perform more than one algorithm simultaneously. The device is operated from an external source and...
6363325 Automotive emergency awareness system  
A vehicular emergency awareness system and method is provided. A vehicle is provided with an onboard computer system adapted to receive and process signals generated at an external source. Under...
6360321 Secure computer system  
A secure computer system including a host computer unit having embedded in a single package, a host CPU, and an authenticating and security controlling computer, a verification unit and a smart...
6347143 Cryptographic device with encryption blocks connected parallel  
A cryptographic device includes a de-multiplexer, a plurality of encryption blocks, a plurality of permutation blocks, and a multiplexer. The encryption blocks encrypt data to produce encrypted...
6337910 Method and apparatus for generating one time pads simultaneously in separate encryption/decryption systems  
A method for simultaneously generating one time pads and an apparatus which implements the method to produce a secure encryption system. The method and apparatus use the Diffie-Hellman key exchange...
6327654 Semiconductor integrated circuit for cryptographic process and encryption algorithm alternating method  
A semiconductor integrated circuit for cryptographic process according to the present invention, comprises a randomizing unit for randomizing first input data which is one of two divided parts of...
6324286 DES cipher processor for full duplex interleaving encryption/decryption service  
A full duplex DES cipher processor (DCP) supports to execute sixteen rounds of data encryption standard (DES) operation in four encryption modes and four decryption modes, namely: Electronic Code...
6304657 Data encryption apparatus using odd number of shift-rotations and method  
A data converting unit includes a key adding unit for performing an arithmetic addition modulo 2 32 for input data F and subkey data Ki and outputting the outcome as data G, and a data...
6301362 Method and apparatus for cryptographically transforming an input block into an output block  
A method and apparatus for cryptographically transforming an input block into an output block. The input block has a first block size and is partitionable into a plurality of input subblocks having...
6298136 Cryptographic method and apparatus for non-linearly merging a data block and a key  
A method and apparatus for cryptographically converting a digital input data block into a digital output data block. The apparatus has an input for supplying the input data block and a further...
6275587 Secure data encoder and decoder  
A computer system includes a processor and a computer readable medium storing a computer program product for encoding a serial bit stream of digital data. The product includes instructions for...
6272221 Encryption apparatus and computor-readable recording medium containing program for realizing the same  
The present encryption apparatus is provided with a plurality of conversion means connected in multiple steps, an intermediate-key generating means for performing linear or non-linear conversion...
Matches 101 - 150 out of 344 < 1 2 3 4 5 6 7 >