| 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) |
|---|
| 03/10/2004 | EP1396169A1 Local authentication in a communication system |
| 03/10/2004 | EP1396166A1 A method for enabling a subscriber entity to actively communicate in a communication network |
| 03/10/2004 | EP1395891A2 Authentication method and data transmission system |
| 03/10/2004 | CN1481532A Communication method, data processing device, and program |
| 03/10/2004 | CN1481116A Automatic configuration equipment for linking network media and its method |
| 03/10/2004 | CN1480871A Method of digit identity authentication based on features of non-biophysics |
| 03/10/2004 | CN1480851A Computer encryption unit and encryption method |
| 03/10/2004 | CN1480829A Data encryption and deciphering method, appts. and program |
| 03/10/2004 | CN1141707C Content information recording method and device |
| 03/10/2004 | CN1141678C Method and system for preventing electronic file pirary |
| 03/09/2004 | US6704715 Method and system for ensuring the security of the remote supply of services of financial institutions |
| 03/09/2004 | US6704372 Digital implementation of multi-channel demodulators |
| 03/09/2004 | US6703918 Portable information equipment, authentication device, authentication system and authentication method |
| 03/09/2004 | CA2293202C Selective security level certificate meter |
| 03/09/2004 | CA2293041C Certificate meter with selectable indemnification provisions |
| 03/04/2004 | WO2004006582A3 Method for coding and decoding digital data stored or transmitted according to the pixels method for transmitting prioritised pixels |
| 03/04/2004 | WO2003085518A3 Configurable arithmetic unit |
| 03/04/2004 | WO2003001362A3 A method and apparatus for carrying out efficiently arithmetic computations in hardware |
| 03/04/2004 | WO2002033880A9 Data reproducing/recording apparatus / method and list updating method |
| 03/04/2004 | US20040044625 Digital contents issuing system and digital contents issuing method |
| 03/03/2004 | EP1395019A2 Apparatus and method for providing authentication information for a secure group communication |
| 03/03/2004 | EP1394982A1 Methods and apparatus for secure data communication links |
| 03/03/2004 | EP1394981A2 Public key cryptograph communication method |
| 03/03/2004 | EP1393527A1 Method for authentication between a portable telecommunication object and a public access terminal |
| 03/03/2004 | EP1393269A2 Transaction verification |
| 03/03/2004 | EP1393164A1 Processor comprising an internal memory configuration |
| 03/03/2004 | CN1479262A Antitheft alarming system with encryption remote control device |
| 03/03/2004 | CN1140974C Method for encryption of information |
| 03/02/2004 | US6701435 Cryptographic key generation system |
| 02/26/2004 | WO2004017193A2 Method for universal calculation applied to points of an elliptic curve |
| 02/26/2004 | WO2003044747A3 Method and device for authenticating message origin |
| 02/26/2004 | US20040039930 System for preventing unauthorized use of recording media |
| 02/26/2004 | US20040039906 Access authorization management system, relay server, access authorization management method, and computer program |
| 02/26/2004 | US20040039768 Jacobian group element adder |
| 02/26/2004 | US20040039741 Method and system for managing a data object so as to comply with predetermined conditions for usage |
| 02/25/2004 | EP1391801A2 Saving and retrieving data based on public key encryption |
| 02/25/2004 | EP0890147B1 Co-processor for performing modular multiplication |
| 02/25/2004 | CN1478365A A system for ensuring encrypted communication after handover |
| 02/25/2004 | CN1478350A Method of secure transmission of digital data from source to receiver |
| 02/25/2004 | CN1478348A Secure session management and authentication for WEB sites |
| 02/25/2004 | CN1478347A Secure file transfer method and system |
| 02/25/2004 | CN1478223A Authentication method and data transmission system |
| 02/25/2004 | CN1478222A Method and system for processing request of customer |
| 02/25/2004 | CN1477495A Program development method, program development support device and mounting method |
| 02/25/2004 | CN1477413A Quantum encoder whose polarization state is modulated by phase and decoder and its application |
| 02/25/2004 | CN1140088C Charging device, information processing system and calculating method |
| 02/25/2004 | CN1140087C Method for authorization check |
| 02/24/2004 | US6697829 Method of and apparatus for generating random numbers |
| 02/19/2004 | WO2004015916A1 Encrypting/decrypting device and method, encrypting device and method, decrypting device and method, and transmitting/receiving device |
| 02/19/2004 | WO2004015629A2 Identification of digital data sequences |
| 02/19/2004 | WO2003098398A3 Methods and apparatus for a title transaction network |
| 02/19/2004 | WO2003026207A3 Method and system for secure distribution of digital documents |
| 02/19/2004 | WO2003007632A3 Software modem with privileged mode driver authentication |
| 02/19/2004 | US20040034863 Fast digital channel changing |
| 02/19/2004 | US20040032951 Method and system for limiting the possibility of transforming data designed to constitute, in particular pre-payment tokens |
| 02/19/2004 | US20040031857 Non-contact IC card |
| 02/18/2004 | EP1389874A2 Fast digital channel changing |
| 02/18/2004 | EP1389385A2 A service gateway for interactive television |
| 02/18/2004 | EP1389376A1 Methods and apparatus for efficient computation of one-way chains in cryptographic applications |
| 02/18/2004 | CN1139221C Data encrypting method and equipment |
| 02/18/2004 | CN1139067C Method for obtaining controlled content or information of DVD and method for operating DVD apparatus |
| 02/17/2004 | US6694436 Terminal and system for performing secure electronic transactions |
| 02/17/2004 | CA2292817C Method and apparatus for elliptic curve cryptography and recording medium therefor |
| 02/12/2004 | WO2004014075A2 Storage of encrypted digital signals |
| 02/12/2004 | WO2004014039A1 Security system for apparatuses in a wireless network |
| 02/12/2004 | WO2004014020A1 Groups signature scheme |
| 02/12/2004 | WO2004014016A1 Method and device of manipulating data in finite fields |
| 02/12/2004 | WO2004013767A1 A method which is able to centralize the administration of the user registered information across networks |
| 02/12/2004 | WO2003081549A3 Secure handling of stored-value data objects |
| 02/12/2004 | US20040030911 Contents distribution scheme using tamper-resistant processor |
| 02/12/2004 | US20040030902 Information recording device, information reproducing device, information recoring method, information reproducing method, and computer program |
| 02/12/2004 | US20040030896 IC card and cryptographic communication method between IC cards |
| 02/12/2004 | US20040030894 Security framework and protocol for universal pervasive transactions |
| 02/12/2004 | US20040030891 Information processing system, information processing apparatus and method, recording medium, and program |
| 02/12/2004 | US20040030784 Methods of accessing and using web-pages |
| 02/12/2004 | US20040029576 Integrity protection during intial registration of a subscriber in a telecommunications network |
| 02/12/2004 | US20040028232 Des hardware throughput for short operations |
| 02/12/2004 | US20040028221 Cryptographic method and cryptographic device |
| 02/11/2004 | EP1389011A2 A method of embedding a steganographic code in an image signal |
| 02/11/2004 | EP1388991A2 Secure communications |
| 02/11/2004 | EP1388989A2 Digital contents issuing system and digital contents issuing method |
| 02/11/2004 | EP1388055A1 Method and system for conditional installation and execution of services in a secure computing environment |
| 02/11/2004 | CN1475091A Integrity protection during initial registration of subscriber in telecommunications network |
| 02/11/2004 | CN1475072A Image system monitored or controlled to ensure fidelity of files captured |
| 02/11/2004 | CN1474335A Product anti-fake method |
| 02/11/2004 | CN1474294A Method for unifying user's registration information trans network |
| 02/11/2004 | CN1474281A Method and system for identifying module in figure system |
| 02/10/2004 | US6691227 Location-independent packet routing and secure access in a short-range wireless networking environment |
| 02/10/2004 | US6690794 Electronic ticket system |
| 02/10/2004 | CA2177138C System and method for simultaneously authorizing multiple virtual channels |
| 02/05/2004 | WO2004012384A2 Apparatus and method for enctyption and decryption |
| 02/05/2004 | WO2004012372A2 Data encryption method, cryptographic system and associated component |
| 02/05/2004 | WO2003096554A3 Seamless public wireless local area network user authentication |
| 02/05/2004 | WO2002048973A3 A remote control account authorization system |
| 02/05/2004 | US20040025037 System and method for manipulating a computer file and/or program |
| 02/05/2004 | US20040022271 Signal generation and broadcasting |
| 02/05/2004 | DE10331893A1 Verfahren zum Sparen von Leistung durch Reduzierung der Zeit des aktiven Empfangs im Standby-Betrieb Method for conserving power by reducing the period of active reception in standby mode |
| 02/04/2004 | EP1387524A1 Message authentication system and method |
| 02/04/2004 | EP1386444A1 Method and system for identifying a replay attack by an access device to a computer system |
| 02/04/2004 | EP1386442A2 Method and apparatus for encrypting content |