| Patents for G09C 1 - Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system (12,544) |
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| 07/21/2005 | US20050159972 Information processing apparatus, image forming apparatus, and electronic data movement canceling method |
| 07/21/2005 | US20050159213 Award money payment system, award ticket issuing device and award ticket accounting device |
| 07/21/2005 | US20050157870 Modular inversion that is protected against espionage |
| 07/21/2005 | DE19547283B4 Verschlüsselungssystem und Verschlüsselungsverfahren, die an verschiedenen schlüssellosen Zugangssystemen anwendbar sind Encryption system and encryption methods that are applicable to various keyless entry systems |
| 07/20/2005 | EP1555777A2 A technique for producing a parameter, such as a checksum, through a primitive that uses elementary register operations |
| 07/20/2005 | EP1555591A2 Secure transaction management |
| 07/20/2005 | EP1554640A2 Watermark insertion apparatus and watermark extraction apparatus |
| 07/20/2005 | EP1410558B1 Data encryption system using key matrix |
| 07/20/2005 | EP1236303A4 Multiple level public key hierarchy for performance and high security |
| 07/20/2005 | EP1179243A4 Cryptographic engine using base conversion, logic operations and prng in data arrays to increase dispersion in ciphertext |
| 07/20/2005 | CN1643931A Device that is used for secure diffusion controlled display private copying and management of and conditional access to MPEG-4-type audiovisual content rights |
| 07/20/2005 | CN1643891A Watermarking a digital object with a digital signature |
| 07/20/2005 | CN1643494A Functional gap average on-line randomness test |
| 07/20/2005 | CN1643493A Monobit-run frequency on-line randomness test |
| 07/20/2005 | CN1643492A Gap average on-line randomness test |
| 07/20/2005 | CN1642267A Smartcard for use with a receiver of encrypted broadcast signals, and receiver |
| 07/20/2005 | CN1642082A Content transmission apparatus, content reception apparatus and content transmission method |
| 07/20/2005 | CN1642075A System and method for protecting received and transmitted data by parity check bit |
| 07/20/2005 | CN1642072A Content transmission apparatus and content reception apparatus |
| 07/20/2005 | CN1641717A Firmware encrypting and decrypting method and an apparatus using the same |
| 07/20/2005 | CN1641716A Data encrypting method and system |
| 07/20/2005 | CN1211977C Portable data storage medium provided with access protection by key for redecomposition |
| 07/20/2005 | CN1211752C Data process system, data process method |
| 07/20/2005 | CN1211750C Sentence information recording method and sentence information decoding device |
| 07/14/2005 | WO2005064844A1 Prime calculation device, method, and key issuing system |
| 07/14/2005 | WO2005064843A1 Prime calculation device, method, and key issuing system |
| 07/14/2005 | WO2005062698A2 System and method for managing protocol network failures in a cluster system |
| 07/14/2005 | US20050154914 Service verifying system, authentication requesting terminal, service utilizing terminal, and service providing method |
| 07/14/2005 | US20050154912 Firmware encrypting and decrypting method and an apparatus using the same |
| 07/14/2005 | US20050154903 Secure video card methods and systems |
| 07/14/2005 | US20050154902 Secure video card methods and systems |
| 07/14/2005 | US20050154880 Revocation information updating method, revocation information updating apparatus and storage medium |
| 07/14/2005 | US20050152552 Architecture for manufacturing authenticatable gaming systems |
| 07/14/2005 | US20050152547 Secure video card methods and systems |
| 07/14/2005 | US20050152541 Tamper-proof elliptic encryption with private key |
| 07/13/2005 | EP1553720A1 Modular exponentiation method in decryption or signature generation |
| 07/13/2005 | EP1553557A1 Music content using apparatus |
| 07/13/2005 | EP1551644A1 Identification document and related methods |
| 07/13/2005 | EP1370933B1 Method and device for modular multiplication |
| 07/13/2005 | EP1076887B1 Method for authenticating a chip card in a message transmission network |
| 07/13/2005 | EP1018239A4 Method and system for transient key digital time stamps |
| 07/13/2005 | CN1640127A Method for processing encoded data for a first domain received in a network pertaining to a second domain |
| 07/13/2005 | CN1639789A Apparatus and method for reading or writing user data |
| 07/13/2005 | CN1638356A Transmitter device and relay device for performing data transmission control |
| 07/13/2005 | CN1638342A System and method for managing protocol network failures in a cluster system |
| 07/13/2005 | CN1638327A Encryption device and program and method used along with the same |
| 07/13/2005 | CN1637854A Music content using apparatus and method thereof |
| 07/13/2005 | CN1210708C Recording and reproducing system, recording apparatus and reproducing apparatus having copy protection function |
| 07/12/2005 | US6918035 Method for two-party authentication and key agreement |
| 07/12/2005 | US6917684 Method of encryption and decryption with block number dependant key sets, each set having a different number of keys |
| 07/12/2005 | CA2284038C Broadcast and reception system, and receiver/decoder and remote controller therefor |
| 07/07/2005 | US20050149758 Authentication apparatus and method for home network devices |
| 07/07/2005 | US20050149745 Encryption/decryption system, encryption/decryption equipment, and encryption/decryption method |
| 07/07/2005 | US20050149442 Certificate information storage system and method |
| 07/07/2005 | US20050147396 Flexible storage of media information |
| 07/07/2005 | US20050147251 Digital two-way communication control device and its method |
| 07/07/2005 | US20050147241 Computation method for modular exponentiation operation in decryption or signature generation |
| 07/06/2005 | EP1550928A1 Block encoding method and block encoding/decoding circuit |
| 07/06/2005 | EP1147634B1 Secure system using continuously-changing features of a body part as a key |
| 07/06/2005 | EP1101331A4 Apparatus for securing user's information in a mobile communication system connected to the internet and method thereof |
| 07/06/2005 | CN1636413A Methods and apparatus for identifying asset location in communication networks |
| 07/06/2005 | CN1636409A Flexible storage of media information |
| 07/06/2005 | CN1636343A Cryptographic communication process and apparatus |
| 07/06/2005 | CN1636184A Randomness test utilizing auto-correlation |
| 07/06/2005 | CN1209718C System and method for operating computer documents and/or programme |
| 07/05/2005 | US6915434 Electronic data storage apparatus with key management function and electronic data storage method |
| 07/05/2005 | US6915430 Reliably identifying information of device generating digital signatures |
| 07/05/2005 | US6914984 Encryption apparatus using data encryption standard algorithm |
| 06/30/2005 | US20050144466 Apparatus and method for rendering user data |
| 06/30/2005 | US20050144289 Connection control system, connection control equipment and connection management equipment |
| 06/30/2005 | US20050144140 Information processing system, information processing method, and information processing apparatus |
| 06/30/2005 | US20050144019 Contents delivery system, information processing apparatus or information processing method and computer program |
| 06/30/2005 | US20050141707 Efficient storage of fingerprints |
| 06/30/2005 | US20050141024 Image processing system and information processing method |
| 06/30/2005 | US20050140667 Connection device capable of converting a pixel clock to a character clock |
| 06/29/2005 | EP1549070A1 Method for protection against decryption of a multiplex signal and broadcast system therefore |
| 06/29/2005 | EP1549011A1 Communication method and system between a terminal and at least a communication device |
| 06/29/2005 | EP1548972A2 Transmitter device and relay device for performing data transmission control |
| 06/29/2005 | EP1548688A1 Block encoding/decoding method, circuit, and device |
| 06/29/2005 | EP1548687A1 Tamper-resistant elliptical curve encryption using secret key |
| 06/29/2005 | EP1547416A1 Method for calculating hashing of a message in a device communicating with a smart card |
| 06/29/2005 | EP1547377A1 A video recorder unit and method of operation therefor |
| 06/29/2005 | EP1547322A2 System for efficient recovery of node-b buffered data following mac layer reset |
| 06/29/2005 | EP1547301A1 Method and device of manipulating data in finite fields |
| 06/29/2005 | EP1307993B1 Linear transformation for symmetric-key ciphers |
| 06/29/2005 | EP1279094B1 Modulo calculation method and device |
| 06/29/2005 | CN1633810A Method for controlling the billing of a broadcast service by units of time |
| 06/29/2005 | CN1633776A Signature schemes using bilinear mappings |
| 06/29/2005 | CN1633775A Digital two-way communication control device and its method |
| 06/29/2005 | CN1633686A Method and device for supplying of a data set stored in a database |
| 06/29/2005 | CN1633665A Method of sending and validating documents |
| 06/29/2005 | CN1633664A Automated digital rights management and payment system with embedded content |
| 06/29/2005 | CN1633631A System and method for controlling distribution of digital copyrighted material |
| 06/29/2005 | CN1633147A A method for implementing calling and called party pay intelligent service |
| 06/29/2005 | CN1632710A Encryption device and method, decryption device and method, and cipher key generation device and method |
| 06/29/2005 | CN1208971C Predictive coding method and decoding method for dynamic image |
| 06/29/2005 | CN1208967C System for processing, coding, and decoding of information signal, and method for information distribution |
| 06/29/2005 | CN1208925C Open secret-key base system, method, and apparatus |
| 06/28/2005 | US6912654 Secret key generating method, encryption method, cryptographic communication method and cryptographic communication system |
| 06/28/2005 | US6912558 Multiplication module, multiplicative inverse arithmetic circuit, multiplicative inverse arithmetic control method, apparatus employing multiplicative inverse arithmetic circuit, and cryptographic apparatus and error correction decoder therefor |