| 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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| 08/12/2004 | US20040158634 Communication scheme using outside DTCP bridge for realizing copyright protection |
| 08/12/2004 | US20040157601 Method for enabling a subscriber entity to actively communicate in a communication network |
| 08/12/2004 | US20040157584 Method for establishing and managing a trust model between a chip card and a radio terminal |
| 08/12/2004 | US20040156499 Method of designing optimum encryption function and optimized encryption apparatus in a mobile communication system |
| 08/12/2004 | US20040156498 Public key cryptosystem using finite non abelian groups |
| 08/11/2004 | EP1445891A1 Elliptic curve scalar multiple calculation method and device, and storage medium |
| 08/11/2004 | EP1444857A1 Encrypting a pseudo-noise (pn) sequence before spreading a communication signal |
| 08/11/2004 | EP1444242A2 Secure handling of stored-value data objects |
| 08/11/2004 | EP1277300A4 System and method for controlling and enforcing access rights to encrypted media |
| 08/11/2004 | EP1055203B1 Protocol between an electronic key and a lock |
| 08/11/2004 | EP0803153A4 Private signature and proof systems |
| 08/11/2004 | CN1520655A Information processing appts. and method, and storage medium |
| 08/11/2004 | CN1520583A Cryptographic method of protecting electronic chip against fraud |
| 08/11/2004 | CN1520106A Radio LAN retransmission apptsl providing method for radio LAN service and its recording medium |
| 08/11/2004 | CN1519792A Digital watermark with variable position |
| 08/11/2004 | CN1161922C Document authentication system and method |
| 08/11/2004 | CA2456400A1 Publishing digital content within a defined universe such as an organization in accordance with a digital rights management (drm) system |
| 08/10/2004 | US6775777 Secure system using images of only part of a body as the key where the part has continuously-changing features |
| 08/10/2004 | US6775775 Method of physical individual authentication and system using the same |
| 08/10/2004 | US6775769 Cryptographic apparatus, encryptor, and decryptor |
| 08/10/2004 | US6775382 Method and apparatus for recovering encryption session keys |
| 08/05/2004 | WO2004066154A1 Content delivery system, information processing apparatus or information processing method, and computer program |
| 08/05/2004 | US20040153657 Program development method, program development supporting system, and program installation method |
| 08/05/2004 | US20040151313 Digital watermark with variable location |
| 08/05/2004 | US20040151182 Communication device and communication method |
| 08/04/2004 | EP1443699A1 Information processing means and IC card |
| 08/04/2004 | EP1443440A1 Electronic transaction system |
| 08/04/2004 | EP1443405A1 Communication method, data processing apparatus, and program |
| 08/04/2004 | EP1442566A2 Method and system for transferring ip packets by aggregating multiple wireless communication channels for high data rate transfers |
| 08/04/2004 | EP1442374A2 Multi-core multi-thread processor |
| 08/04/2004 | EP1442365A2 Stream processor with cryptographic co-processor |
| 08/04/2004 | EP1442355A2 Dram power management |
| 08/04/2004 | EP1442351A2 Secure content distribution method and system |
| 08/04/2004 | EP1442348A2 Processing copy protection signals |
| 08/04/2004 | EP1442347A2 Processing copy protection signals |
| 08/04/2004 | CN1518734A Key generation device, encoding/decoding device and key generation method |
| 08/04/2004 | CN1518733A Arithmetic device and encryption/decryption device |
| 08/04/2004 | CN1518732A Calculation device and calculation method |
| 08/04/2004 | CN1518336A Electronic camera and information equipment and portable information device |
| 08/04/2004 | CN1517827A Identification mode of contents file producer and its program |
| 08/04/2004 | CN1160904C Method and device for guaranteeing integrity and authenticity of set of data |
| 08/04/2004 | CN1160903C Method for verifying message signature |
| 08/03/2004 | US6772343 Data processor, communication system and recording medium |
| 08/03/2004 | US6772342 Document or message security arrangements using a numerical hash function |
| 08/03/2004 | US6772335 Multimedia coordination system |
| 07/29/2004 | WO2004064011A2 Method of constructing hyperelliptic curves suitable for cryptographic purposes and cryptographic apparatus using such a method |
| 07/29/2004 | WO2003034227A3 Apparatus and method for reading or writing user data |
| 07/29/2004 | US20040148512 Cryptographic apparatus for supporting multiple modes |
| 07/29/2004 | US20040148495 Processor with internal memory configuration |
| 07/29/2004 | US20040148325 Information processing means |
| 07/29/2004 | US20040146158 Cryptographic systems and methods supporting multiple modes |
| 07/29/2004 | US20040145661 Image processing method, and image processing apparatus |
| 07/29/2004 | US20040144236 System, method and computer program for ensuring secure use of music playing data files |
| 07/28/2004 | EP1440439A1 Apparatus and method for reading or writing block-wise stored user data |
| 07/28/2004 | EP1440359A2 User access control to distributed resources on a data communications network |
| 07/28/2004 | EP1360644B1 Security module comprising a volatile memory for storing an algorithm code |
| 07/28/2004 | CN1516495A Method and device for testing first communication side truth and reliability in communication network |
| 07/28/2004 | CN1516494A Method and device for testing first communication side truth and reliability in communication network |
| 07/28/2004 | CN1516470A Digital signature for digital TV |
| 07/28/2004 | CN1516464A Copy-preventing method and recording device for digital data processing and recording system |
| 07/28/2004 | CN1516421A 数据获取装置 Data acquisition means |
| 07/28/2004 | CN1159633C Robust random number generator |
| 07/27/2004 | US6769062 Method and system of using an insecure crypto-accelerator |
| 07/27/2004 | US6768797 Method and apparatus for encrypting data in a wireless communication system |
| 07/22/2004 | WO2004062283A1 Digital television transmitter and receiver for transmitting and receiving dual stream using 4 level vestigial side band robust data |
| 07/22/2004 | WO2003091861A3 Identity management system using single sign-on |
| 07/22/2004 | WO2003085479A3 Apparatus and method for rendering user data |
| 07/21/2004 | EP1438818A2 Method and apparatus for a data packet classifier using a two-step hash matching process |
| 07/21/2004 | EP1438804A1 Public key cryptographic method based on braid groups |
| 07/21/2004 | EP1438667A2 System and method for caching dram using an egress buffer |
| 07/21/2004 | EP1066699B1 Method of generating a public key in a secure digital communication system and implicit certificate |
| 07/21/2004 | EP0819345A4 Electronic funds transfer instruments |
| 07/21/2004 | CN1514619A Upgrading of automation level for computer system to provide network access |
| 07/20/2004 | US6766345 Galois field multiplier system |
| 07/20/2004 | US6766306 Electronic cash system |
| 07/20/2004 | US6766024 Data communication system |
| 07/15/2004 | WO2004038531A9 Watermark insertion apparatus and watermark extraction apparatus |
| 07/15/2004 | WO2004025842A3 System for efficient recovery of node-b buffered data following mac layer reset |
| 07/15/2004 | WO2003098429A3 Modular inversion that is protected against espionage |
| 07/15/2004 | WO2003055134A9 Cryptographic method for distributing load among several entities and devices therefor |
| 07/15/2004 | US20040139472 Transmission and reception of television programmes and other data |
| 07/15/2004 | US20040139347 Information processing apparatus and method |
| 07/15/2004 | US20040139334 Computer system protection |
| 07/15/2004 | US20040139230 SIP service method in a network having a NAT |
| 07/15/2004 | US20040139139 Exponent calculation apparatus and method, and program |
| 07/15/2004 | US20040139026 Production protection system dealing with contents that are digital production |
| 07/15/2004 | DE19701161B4 Maximum-Likelihood-Detektionsverfahren und eine Information aufzeichnende und wiedergebende Vorrichtung Maximum likelihood detecting method and an information recording and reproducing apparatus |
| 07/14/2004 | EP1436996A1 Interactive protocol for remote management of access control to scrambled data |
| 07/14/2004 | EP1436958A1 A digital implementation of multi-channel demodulators |
| 07/14/2004 | EP0719485B1 Access control for portable data storage media |
| 07/14/2004 | CN1513136A Process comprising an internal memory configuration |
| 07/14/2004 | CN1157699C Article truth identifying system |
| 07/13/2004 | US6763460 Method of transmitting information data from a sender to a receiver via a transcoder, method of transcoding information data, method for receiving transcoded information data, sender, transcoder and receiver |
| 07/13/2004 | US6763459 Lightweight public key infrastructure employing disposable certificates |
| 07/13/2004 | US6763365 Hardware implementation for modular multiplication using a plurality of almost entirely identical processor elements |
| 07/13/2004 | US6763363 Computer efficient linear feedback shift register |
| 07/08/2004 | WO2003090259A3 Authentication of integrated circuits |
| 07/08/2004 | WO2002047081A3 System, method, and device for playing back recorded audio, video or other content from non-volatile memory cards, compact disks or other media |
| 07/08/2004 | US20040133794 Self-protecting digital content |
| 07/08/2004 | US20040133789 Digital authentication over acoustic channel |