| 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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| 05/06/2004 | US20040086123 Location-independent packet routing and secure access in a short-range wireless networking environment |
| 05/06/2004 | US20040086122 Recovering from de-synchronization attacks against watermarking and fingerprinting |
| 05/06/2004 | EP1416684A1 Communication method and communication system |
| 05/06/2004 | EP1416664A2 Data encryption method |
| 05/06/2004 | EP1416486A1 Information recording device, information reproducing device, information recording method, information reproducing method, and computer program |
| 05/05/2004 | CN2614370Y False proof apparatus with multiple image concealing |
| 05/05/2004 | CN2614360Y A lottery electronic paper card |
| 05/05/2004 | CN1494802A Signal tracing system and method |
| 05/05/2004 | CN1494043A Communication breaking rules and regulations monitoring system and method based on multimedia information transferring service |
| 05/05/2004 | CN1494010A 网络系统 Network Systems |
| 05/05/2004 | CN1148645C Device for executing enciphered program |
| 05/05/2004 | CN1148643C Modules power operation method |
| 05/04/2004 | US6732273 Priority and security coding system for electronic mail messages |
| 05/04/2004 | US6732271 Method of deciphering ciphered data and apparatus for same |
| 05/04/2004 | US6731731 Authentication method, authentication system and recording medium |
| 04/29/2004 | WO2003060908A3 System and method for controlling distribution of digital copyrighted material |
| 04/29/2004 | WO2003050647A3 Automated digital rights management and payment system with embedded content |
| 04/29/2004 | US20040083380 Security module with volatile memory for storing an algorithm code |
| 04/29/2004 | US20040083375 Initializing, maintaining, updating and recovering secure operation within an integrated system employing a data access control function |
| 04/29/2004 | US20040083364 Method of secure transmission of digital data from a source to a receiver |
| 04/29/2004 | US20040083251 Parallel modulo arithmetic using bitwise logical operations |
| 04/29/2004 | US20040083123 System for managing medical insurance using information communication network |
| 04/29/2004 | US20040081317 Encryption circuit achieving higher operation speed |
| 04/29/2004 | DE10296445T5 Adress-Mechanismen im Internet-Protokoll Address mechanisms in the Internet protocol |
| 04/28/2004 | EP1413951A2 Method for generating random number and random number generator |
| 04/28/2004 | EP1413088A1 Method of creating a virtual private network using a public network |
| 04/28/2004 | EP1413084A1 Public key cryptosystem using finite non abelian groups |
| 04/28/2004 | EP1412926A1 Method for managing purchase of broadcast digital contents and means for downloading same |
| 04/28/2004 | EP1412834A2 Software modem with privileged mode driver authentication |
| 04/28/2004 | CN1492429A Method and device for obtaining DVD disc controlled content or information and method for controlling DVD device |
| 04/28/2004 | CN1492339A Method and system for encrypting bus using improved difference transition code |
| 04/28/2004 | CN1148099C Method for identification of data in terminal |
| 04/28/2004 | CN1148097C Method and apparatus for providing authentication security in a wireless communication system |
| 04/28/2004 | CN1148035C Apparatus for securing user's information in mobile communication system connected to internet and method thereof |
| 04/27/2004 | US6728379 Information processor and information processing method |
| 04/22/2004 | WO2004034171A1 Block encoding method and block encoding/decoding circuit |
| 04/22/2004 | WO2004025437A3 Method for transmitting encrypted user data objects |
| 04/22/2004 | WO2004014020A8 Groups signature scheme |
| 04/22/2004 | WO2003091861A9 Identity management system using single sign-on |
| 04/22/2004 | WO2003047154A9 Security reconfiguration in a universal mobile telecommunications system |
| 04/22/2004 | US20040078586 Terminal apparatus capable of using a recording medium with a copyright protecting function |
| 04/22/2004 | US20040078576 Pseudo-random number generator |
| 04/22/2004 | US20040078570 Method of protecting a cryptosystem from a multiple transmission attack |
| 04/22/2004 | US20040078564 Hallmarking verification process and system and corresponding method of and system for communication |
| 04/22/2004 | US20040078414 Decryption of cipher polynomials |
| 04/22/2004 | US20040076297 Signal tracking system and method |
| 04/22/2004 | US20040076292 Encryption apparatus |
| 04/22/2004 | US20040076291 End of message markers |
| 04/22/2004 | US20040075773 Scrambler, descrambler and the program for scrambling or descrambling |
| 04/22/2004 | DE10296684T5 Superverbreitung von Musik Super dissemination of music |
| 04/21/2004 | EP1411430A2 Method and system for flexible delegation in a computer system |
| 04/21/2004 | EP1410558A2 Data encryption system using key matrix |
| 04/21/2004 | EP1410545A1 Method and apparatus for data encryption |
| 04/21/2004 | EP1410293A2 System and method for compressing secure e-mail for exchange with a mobile data communication device |
| 04/21/2004 | EP1410278A2 System and method for verifying delivery and integrity of electronic message |
| 04/21/2004 | EP1410145A2 System of databases of personal data and a method of governing access to databases of personal data |
| 04/21/2004 | CN1491506A Method and device for safely assigning content of program |
| 04/21/2004 | CN1491397A Electronic transaction system |
| 04/21/2004 | CN1491063A Method for shortening active receiving time and saving power in stand-by mode |
| 04/21/2004 | CN1490771A Terminal apparatus of recording medium with copyright protective function |
| 04/21/2004 | CN1490736A Data stream header object protection |
| 04/21/2004 | CN1147148C Conditional access system for set-top boxes |
| 04/21/2004 | CN1147136C Receiver and method for processing program signal component in receiving |
| 04/21/2004 | CN1147089C Method and system for consumer electronic device certificate management |
| 04/21/2004 | CN1147086C Apparatus and associated method for generating pseudo-random number |
| 04/20/2004 | US6725375 Microcomputer and method and apparatus for changing the contents of the memory in the microcomputer |
| 04/15/2004 | WO2004032494A1 Information processing device and method, program, and recording medium |
| 04/15/2004 | WO2004032098A1 Pseudo-random number generation method and pseudo-random number generator |
| 04/15/2004 | WO2004032097A1 Block encoding/decoding method, circuit, and device |
| 04/15/2004 | WO2004002058A3 Method of generating electronic keys for a public-key cryptography method and a secure portable object using said method |
| 04/15/2004 | WO2003069462A3 System and method for calculating a result from a division |
| 04/15/2004 | US20040073801 Methods and systems for flexible delegation |
| 04/15/2004 | US20040073788 Method of transmitting security data in an ethernet passive optical network system |
| 04/15/2004 | US20040073784 Wireless lan access point, method for providing wireless lan services, and medium storing program for providing wireless lan services |
| 04/15/2004 | US20040073515 Method for metering and pricing of digital works |
| 04/15/2004 | US20040073513 Method and system for conducting transactions between repositories |
| 04/15/2004 | US20040073451 Method of controlling digital content distribution, a method of reproducing digital content, and an apparatus using the same |
| 04/15/2004 | US20040071291 Secure method for secret key cryptographic calculation and component using said method |
| 04/15/2004 | US20040071288 Secure encryption method and component using same |
| 04/14/2004 | EP1408648A2 Wireless LAN access point, method for providing wireless LAN services, and program for providing wireless LAN services |
| 04/14/2004 | EP1408644A2 Digital signatures for digital television application |
| 04/14/2004 | EP1408471A1 Calculation device and calculation method |
| 04/14/2004 | EP1407575A1 Procede pour effectuer une tache cryptographique au moyen d'une cle publique. |
| 04/14/2004 | EP1407344A1 Electronic vouchers and a system and method for issuing the same |
| 04/14/2004 | EP1260052A4 Cryptographic communication process and apparatus |
| 04/14/2004 | EP1161812A4 Voice and data encryption method using a cryptographic key split combiner |
| 04/14/2004 | EP0976221B1 Method and system for producing and checking a hash total for digital data grouped in several data segments |
| 04/14/2004 | CN1489872A Local authentication in communication system |
| 04/14/2004 | CN1489855A Providing secure network access for short-range wireless computing devices |
| 04/14/2004 | CN1489764A Information storage medium, information processing system, content distribution server, method, program and its recording medium |
| 04/14/2004 | CN1489748A Security moudle comprising volcotile memory for storing algorithm code |
| 04/14/2004 | CN1489741A System for managing medical insurance using information communication network |
| 04/14/2004 | CN1146235C Conditional access system for broadcast digital TV. |
| 04/14/2004 | CN1146178C Method and appts. for data processing |
| 04/14/2004 | CN1145891C Device and method for information output and recording, information output recording system |
| 04/14/2004 | CN1145576C Cord winder for vacuum cleaner |
| 04/13/2004 | US6721888 Mechanism for merging multiple policies |
| 04/13/2004 | US6721887 Data copyright management system |
| 04/13/2004 | US6721437 Data processing apparatus, coding apparatus, data processing method and coding method |
| 04/13/2004 | US6721421 Method for encrypting information represented as a numerical value |