| 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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| 06/03/2004 | WO2004023286A3 Feedback random number generation method and system |
| 06/03/2004 | WO2004015629A3 Identification of digital data sequences |
| 06/03/2004 | WO2003067466A3 Efficient storage of fingerprints |
| 06/03/2004 | WO2003038578A8 User access control to distributed resources on a data communications network |
| 06/03/2004 | WO2001071554A3 Methods of accessing and using web-pages |
| 06/03/2004 | US20040107353 Cryptographic method of protecting an electronic chip against fraud |
| 06/03/2004 | US20040107167 Method of controlling digital content distribution, a method of reproducing digital content, and an apparatus using the same |
| 06/03/2004 | US20040107166 Usage rights grammar and digital works having usage rights created with the grammar |
| 06/03/2004 | US20040104265 Personal identification terminal and method having selectable identification means or identification levels |
| 06/02/2004 | EP1135887B1 Message identification with confidentiality, integrity, and source authentication |
| 06/02/2004 | CN1502185A Improving DES hardware throughput for short operations |
| 06/02/2004 | CN1152574C Integrated circuit and smart card comprising such circuit |
| 06/02/2004 | CN1152507C Generation of cryptographic signatures using hash keys |
| 06/01/2004 | US6745220 Efficient exponentiation method and apparatus |
| 06/01/2004 | US6745166 Contents information recording method, contents information processing unit, contents information deciphering method, contents information deciphering unit and media thereof |
| 06/01/2004 | CA2342737C Computing method for elliptic curve cryptography |
| 05/27/2004 | US20040103316 Securing arbitrary communication services |
| 05/27/2004 | US20040103305 Systems and methods for secure transaction management and electronic rights protection |
| 05/27/2004 | US20040103301 Reproduction control method, program and recording medium |
| 05/27/2004 | US20040103286 Method of validating an encrypted message |
| 05/27/2004 | US20040101135 Encryption level indicator calculation method and computer program |
| 05/27/2004 | US20040100978 Scheme for realizing communications through external network from contents processing device connected to local network in home environment |
| 05/26/2004 | EP1422907A2 Securely processing client credentials used for web-based access to resources |
| 05/26/2004 | EP1422863A1 INFORMATION PROVIDING SYSTEM, INFORMATION PROVIDING APPARATUS AND METHOD, AND INFORMATION PROCESSING APPARATUS AND METHOD |
| 05/26/2004 | EP1422590A2 Service Providing Method for a Second Service based on Authentication for a First Service |
| 05/26/2004 | EP1421472A2 A method and apparatus for carrying out efficiently arithmetic computations in hardware |
| 05/26/2004 | EP1269431B1 Method for protecting an electronic chip against fraud |
| 05/26/2004 | EP1044405B1 Power signature attack resistant cryptography |
| 05/26/2004 | EP0907269B1 Encryption device for information in binary code |
| 05/26/2004 | CN1500323A Wireless clock synchronization |
| 05/26/2004 | CN1499864A Stored information redundancy method and system of cellular telephone |
| 05/26/2004 | CN1499770A Communication facilities and communication method thereof |
| 05/26/2004 | CN1499763A Method and equipment for reaching synchronization to base station |
| 05/26/2004 | CN1499360A Semiconductor integrated circuit device, and program handover method and system thereof |
| 05/26/2004 | CN1499358A Method and device for base transfer in finite extent |
| 05/26/2004 | CN1151630C Digital sign or electron seal indentification system and identification mark management sequence |
| 05/26/2004 | CN1151462C Method for exchanging authentication and signing electronic signature |
| 05/25/2004 | US6742122 Data encipherment apparatus and illegal alteration prevention system |
| 05/25/2004 | CA2337306C Method and apparatus for symmetric-key encryption |
| 05/21/2004 | WO2004014075A3 Storage of encrypted digital signals |
| 05/21/2004 | WO2004012372A3 Data encryption method, cryptographic system and associated component |
| 05/21/2004 | WO2004002057A3 Round key generation for aes rijndael block cipher |
| 05/21/2004 | WO2003090027A3 Mobile account authentication service |
| 05/21/2004 | WO2003052584A3 Pipelined core in montgomery multiplier |
| 05/21/2004 | WO2000078118A3 Implementing a cryptographic primitive using elementary register operations |
| 05/20/2004 | US20040098679 Circuit design method, apparatus, and program |
| 05/20/2004 | US20040098609 Securely processing client credentials used for Web-based access to resources |
| 05/20/2004 | US20040098590 Message authentication device |
| 05/20/2004 | US20040098587 Communications method, data processing apparatus, and program |
| 05/20/2004 | US20040098582 Certification processing hardware, certification processing system and use management hardware |
| 05/20/2004 | US20040098437 Method and apparatus for basis conversion in finite field |
| 05/20/2004 | US20040098352 Electronic cash system |
| 05/20/2004 | CA2450056A1 Securely processing client credentials used for web-based access to resources |
| 05/19/2004 | EP1419640A2 Local digital network, methods for installing new devices and data broadcast and reception methods in such a network |
| 05/19/2004 | EP1142181A4 Auto-recoverable auto-certifiable cryptosystems with unescrowed signature-only keys |
| 05/19/2004 | EP1066700A4 System and method for deriving an appropriate initialization vector for secure communications |
| 05/19/2004 | EP1057095B1 System for reviewing a document having a log of the reviewer activities |
| 05/19/2004 | EP0998800B1 Document or message security arrangements using a numerical hash function |
| 05/19/2004 | CN1498499A Streaming system for distributing encrypted compressed image data and streaming method thereof |
| 05/19/2004 | CN1497472A Service vertification system, vertification require terminal, service operating terminal and providing method |
| 05/19/2004 | CN1497429A Radom data generating method and radom data generator |
| 05/19/2004 | CN1497412A Image vertification equipment, image vertification method and image vertification program |
| 05/19/2004 | CN1150762C Apparatus and method for authenticating transmitted applications in interative information system |
| 05/19/2004 | CN1150713C Method for processing digital signal in so-called secrue communication system |
| 05/18/2004 | US6738478 Power signature attack resistant cryptography |
| 05/13/2004 | WO2004040838A1 Random number generation device |
| 05/13/2004 | WO2004040837A1 Data processing device and data reception processing device |
| 05/13/2004 | WO2004021275A3 Embedding fingerprint data for media content identification |
| 05/13/2004 | US20040093528 Internet connection service providing method and system |
| 05/13/2004 | US20040093385 Memory information backup method and system for cell phone |
| 05/13/2004 | US20040093369 Multiplication remainder calculator |
| 05/13/2004 | US20040093308 Electronic transaction system |
| 05/13/2004 | US20040091113 Interface apparatus for monitoring encrypted network |
| 05/13/2004 | US20040091107 Method and apparatus for encrypting data |
| 05/12/2004 | EP1418736A1 Memory information backup method and system for cell phone |
| 05/12/2004 | EP1418700A1 Method and device for communicating encrypted asynchronous and synchronous packets |
| 05/12/2004 | CN1496073A Information check equipment |
| 05/12/2004 | CN1495666A Storage card |
| 05/12/2004 | CN1495627A Electronic musical system and electronic music play method |
| 05/12/2004 | CN1495620A Semiconductor device with encrypted part or external interface and content reproducing method |
| 05/12/2004 | CN1495414A Signal statistical survey |
| 05/12/2004 | CN1149784C Method and device for transmitting revisions with digital signatures |
| 05/12/2004 | CN1149783C Digital document authentication system for providing certificate which authenticates and uniquely identifies document |
| 05/12/2004 | CN1149782C Circuit for producing pseudorandom number and its application in data communication system |
| 05/12/2004 | CN1149504C Method of authorization in data transmission sytems |
| 05/11/2004 | US6735611 Arithmetic processor |
| 05/11/2004 | US6735313 Cryptographic method and apparatus for restricting access to transmitted programming content using hash functions and program identifiers |
| 05/11/2004 | US6735311 Encryption and decryption of multi-media data |
| 05/11/2004 | CA2318509C System and method for copy protection for digital signals |
| 05/06/2004 | WO2004038531A2 Watermark insertion apparatus and watermark extraction apparatus |
| 05/06/2004 | WO2004017193A3 Method for universal calculation applied to points of an elliptic curve |
| 05/06/2004 | WO2003098916A3 High-resolution image projection |
| 05/06/2004 | WO2002065256A3 Processing copy protection signals |
| 05/06/2004 | WO2002065255A3 Processing copy protection signals |
| 05/06/2004 | US20040088674 Method for designing logic circuit and CAD program |
| 05/06/2004 | US20040088582 Data network-based system |
| 05/06/2004 | US20040088567 Portable device for securing packet traffic in a host platform |
| 05/06/2004 | US20040088559 Initializing, maintaining, updating and recovering secure operation within an integrated system employing a data access control function |
| 05/06/2004 | US20040088557 Secure presentation of media streams in response to encrypted digital content |
| 05/06/2004 | US20040088554 Semiconductor integrated circuit device,program delivery method, and program delivery system |