| 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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| 03/07/2001 | CN1286457A Encrypting method and device, and decrypting method and device |
| 03/06/2001 | CA2212813C Method and apparatus for cryptographically protecting data |
| 03/01/2001 | WO2001015428A1 Remote control system for audio and video content |
| 03/01/2001 | CA2383361A1 Remote control system for audio and video content |
| 02/28/2001 | EP1078491A1 Robust efficient distributed rsa-key generation |
| 02/28/2001 | CN1285987A Apparatus, and associated method, for generating a pseudo-random number |
| 02/27/2001 | US6195669 Physical random number generator, method of generating physical random numbers and physical random number storing medium |
| 02/27/2001 | US6195433 Private key validity and validation |
| 02/27/2001 | CA2237941C Efficient cryptographic hash functions and methods for amplifying the security of hash functions and pseudo-random functions |
| 02/22/2001 | WO2001013570A1 Encryption communication system |
| 02/22/2001 | WO2001013218A1 Method for generating pseudo random numbers and method for electronic signatures |
| 02/22/2001 | CA2381937A1 Method for generating pseudorandom numbers and a method for electronic sigenature |
| 02/21/2001 | EP1077398A1 Secure electronic content distribution on CDS and DVDS |
| 02/21/2001 | EP1076954A1 System and method for electronic transmission, storage and retrieval of authenticated documents |
| 02/21/2001 | EP1076952A1 Private key validity and validation |
| 02/21/2001 | EP1076887A1 Method for authenticating a chip card in a message transmission network |
| 02/21/2001 | CN1285102A Method for block-encryption of discrete data |
| 02/20/2001 | US6192385 Pseudorandom number generating method and pseudorandom number generator |
| 02/15/2001 | WO2001011820A1 Method and device for guaranteeing the integrity and authenticity of a set of data |
| 02/15/2001 | WO2001011818A2 Method and apparatus for generating a message authentication code |
| 02/15/2001 | WO2000075750A3 Parameter generation using elementary register operations |
| 02/15/2001 | CA2686435A1 Method and device for guaranteeing the integrity and authenticity of a set of data |
| 02/14/2001 | CN1284227A Method for making secure transmission of message from transmitting device to receiving device |
| 02/14/2001 | CN1283924A Appts and method for synchronizing compressed vision signal receiving system |
| 02/13/2001 | US6189098 Client/server protocol for proving authenticity |
| 02/13/2001 | CA2164173C Method and apparatus for incremental delivery of access rights |
| 02/08/2001 | WO2001009735A1 Authentication method, authentication system and recording medium |
| 02/07/2001 | EP1025498A4 Method and apparatus for targeting a digital information playback device |
| 02/07/2001 | CN1283288A Portable 1-way wireless finanial messaging unit |
| 02/07/2001 | CN1283040A Method and system of distributing multimedia data using management information |
| 02/06/2001 | US6185686 Computer system and process for accessing an encrypted and self-decrypting digital information product while restricting access to decrypted digital information |
| 02/06/2001 | US6185683 Trusted and secure techniques, systems and methods for item delivery and execution |
| 02/06/2001 | US6185682 Authentication system |
| 02/06/2001 | US6185680 Packet authentication and packet encryption/decryption scheme for security gateway |
| 02/06/2001 | US6185596 Apparatus & method for modular multiplication & exponentiation based on Montgomery multiplication |
| 02/01/2001 | WO2001008411A1 Field programmable gate array with program encryption |
| 01/31/2001 | EP1073222A2 Method of delivering information in a digital broadcasting system using multiple bitstreams |
| 01/31/2001 | EP1073021A2 Information processing apparatus, card and information processing system |
| 01/31/2001 | EP1072149A1 Authentication and verification within a digital camera architecture |
| 01/31/2001 | EP1072124A2 Method for verifying the use of public keys generated by an on-board system |
| 01/30/2001 | US6182104 Circuit and method of modulo multiplication |
| 01/24/2001 | EP0819346A4 Digital document authentication system for providing a certificate which authenticates and uniquely identifies a document |
| 01/24/2001 | CN1281607A Cryptographic system and method with fast decryption |
| 01/24/2001 | CN1281203A Equipment used for solving equation system on finite field and equipment used for inverse operation of epitaxial field element |
| 01/24/2001 | CN1061192C Method and system for audio information dissemination using various transmission modes |
| 01/23/2001 | US6178244 Cryptosystem |
| 01/23/2001 | US6178167 Customer telecommunication interface device having a unique identifier |
| 01/23/2001 | CA2182173C Efficient electronic money |
| 01/23/2001 | CA2164768C Constructing symmetric ciphers using the cast design procedure |
| 01/18/2001 | WO2001005090A1 A method for protecting a portable card |
| 01/18/2001 | WO2001004742A1 Computing method for elliptic curve cryptography |
| 01/18/2001 | CA2378703A1 A method for protecting a portable card |
| 01/17/2001 | EP1069570A1 Remote management system for at least one audio-visual reproduction apparatus |
| 01/17/2001 | EP1069498A2 Apparatus for solving system of equations on finite field and apparatus for inverting element of extension field |
| 01/17/2001 | EP1069497A2 Pseudo-random data generator and scrambler using the same |
| 01/17/2001 | EP1069491A2 Contents management method, contents management apparatus, and recording medium |
| 01/17/2001 | EP1068696A2 Generating rsa moduli including a predetermined portion |
| 01/17/2001 | EP1068695A1 Method for protecting an electronic cryptographic set with secret key against cryptanalytical attack |
| 01/17/2001 | CN1280742A Method and apparatus for encrypted data stream transmission |
| 01/17/2001 | CN1280726A Transformation methods for optimizing elliptic curve cryptographic computations |
| 01/17/2001 | CN1280695A Method for managing data in a smart card |
| 01/17/2001 | CN1280366A Random date generator and scrambler using said generator |
| 01/17/2001 | CN1280337A Content manage method and content manage device and recording medium |
| 01/17/2001 | CN1280336A Information processing equipment and method and issuing media |
| 01/16/2001 | US6175924 Method and apparatus for protecting application data in secure storage areas |
| 01/16/2001 | US6175923 Secure system using images of only part of a body as the key where the part has continuously-changing features |
| 01/16/2001 | CA2193748C Data network security system and method |
| 01/11/2001 | WO2001002968A1 Data providing system, device, and method |
| 01/11/2001 | WO2000072500A3 Information encryption system and method |
| 01/11/2001 | WO2000059153A3 Duty cycle corrector for a random number generator |
| 01/10/2001 | EP1067540A2 Copy protection by adding copy control information |
| 01/10/2001 | EP1067469A2 Information processing apparatus and method, and distribution medium |
| 01/10/2001 | EP1067457A1 Management of a communication network and the migragtion of mobile agents |
| 01/10/2001 | EP1066700A2 System and method for deriving an appropriate initialization vector for secure communications |
| 01/10/2001 | EP1066699A1 Implicit certificate scheme |
| 01/10/2001 | EP1066558A1 Accelerated finite field operations on an elliptic curve |
| 01/10/2001 | CN1279851A Virtual matrix encryption (VME) and virtual key cryptographic method and aparatus |
| 01/10/2001 | CN1279784A Method and apparatus for protection of recorded digital data |
| 01/10/2001 | CN1279781A Apparatus for multiprecision integer arithmetic |
| 01/10/2001 | CN1279551A Communication network and management for immigration of mobile agents |
| 01/09/2001 | CA2206135C Method for certifying a copy of a document such as a fax |
| 01/04/2001 | WO2001001644A1 Apparatus for securing user's information in a mobile communication system connected to the internet and method thereof |
| 01/04/2001 | WO2001001628A1 Modulated message authentication system and method |
| 01/03/2001 | EP1064754A1 Authentification of data in a digital transmission system |
| 01/03/2001 | EP1064753A1 Procedure and system for reliable and safe identification of a contracting party |
| 01/03/2001 | EP1064621A1 System and method for management of postage meter licenses |
| 01/02/2001 | US6170060 Method and apparatus for targeting a digital information playback device |
| 01/02/2001 | US6170058 Method and apparatus for cryptographically camouflaged cryptographic key storage, certification and use |
| 01/02/2001 | US6170012 Methods and apparatus for a computer network firewall with cache query processing |
| 12/28/2000 | WO2000078118A2 Implementing a cryptographic primitive using elementary register operations |
| 12/27/2000 | EP1063833A2 System for filtering data utilizing electronic watermark |
| 12/27/2000 | EP1063812A2 Methods and equipment for encrypting/decrypting, and indentification systems |
| 12/27/2000 | EP1063811A1 Cryptographic apparatus and method |
| 12/27/2000 | EP1062764A1 Elliptic curve cryptographic process and device for a computer |
| 12/27/2000 | EP1062558A2 System and method for backing up computer files over a wide area computer network |
| 12/27/2000 | CN1060003C Synchromization arrangement for a compressed video signal |
| 12/26/2000 | CA2248920C Security apparatus and method for a data communications system |
| 12/26/2000 | CA2238294C Pn sequence generator with bidirectional shift register and eulerian-graph feedback circuit |
| 12/26/2000 | CA2215050C Key escrow method with warrant bounds |
| 12/21/2000 | WO2000078078A1 Method and system for verifying the authenticity of a first communication participants in a communications network |