| 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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| 03/08/2000 | EP0984630A1 Data communication system |
| 03/08/2000 | EP0983541A1 Method and apparatus for signing and sealing objects |
| 03/07/2000 | US6035397 Process for data certification by scrambling and certification system using such a process |
| 03/07/2000 | US6035041 Optimal-resilience, proactive, public-key cryptographic system and method |
| 03/02/2000 | WO2000011870A1 Secure information distribution system utilizing information segment scrambling |
| 03/02/2000 | WO2000011833A1 Method and device for creating a secret communication key for a predetermined asymmetric and cryptographic key-pair |
| 03/02/2000 | WO2000011832A1 System and method for enabling secure access to services in a computer network |
| 03/02/2000 | WO2000011828A1 Time-stamping with binary linking schemes |
| 03/02/2000 | WO1999044329A3 Encryption processor with shared memory interconnect |
| 03/01/2000 | EP0982963A2 Method for determining temporary mobile identifiers and managing use thereof |
| 03/01/2000 | EP0982927A1 Method of generating authentication-enabled electronic data |
| 03/01/2000 | EP0982895A2 Cryptographic data processor, communication system and recording medium |
| 03/01/2000 | EP0982894A1 Block cipher with chaining |
| 03/01/2000 | EP0981874A1 Optimal-resilience, proactive, public-key cryptographic system and method |
| 03/01/2000 | EP0981804A1 Electronic transaction |
| 02/29/2000 | US6031913 Apparatus and method for secure communication based on channel characteristics |
| 02/29/2000 | CA2166895C Method for the production of a key common to two devices for implementing a common cryptographic procedure and associated apparatus |
| 02/28/2000 | CA2276871A1 Method for determining temporary mobile identifiers and managing use thereof |
| 02/24/2000 | WO2000010284A1 Method for improving random testing |
| 02/24/2000 | WO2000010068A2 Apparatus for and method of electronic currency generation, transfer and redemption |
| 02/24/2000 | WO2000008909A2 System for tracking end-user electronic content usage |
| 02/24/2000 | DE19837405A1 Secret communication key forming method |
| 02/24/2000 | CA2340055A1 Apparatus for and method of electronic currency generation, transfer and redemption |
| 02/23/2000 | EP0981223A2 Encryption/decryption apparatus |
| 02/23/2000 | EP0981081A2 Random number generating apparatus |
| 02/23/2000 | EP0980607A1 Pseudo-random generator based on a hash coding function for cryptographic systems requiring random drawing |
| 02/23/2000 | EP0980605A2 Mask generating polynomials for pseudo-random noise generators |
| 02/23/2000 | CN1245578A Message producing type signature device |
| 02/23/2000 | CN1245574A Method and system for performing electronic money transactions |
| 02/22/2000 | US6029151 Method and system for performing electronic money transactions |
| 02/22/2000 | US6029046 Method and apparatus for a game delivery service including flash memory and a game back-up module |
| 02/22/2000 | US6028940 Virtual shop computer network system which displays member shops and member shop certification method |
| 02/22/2000 | US6028937 Communication device which performs two-way encryption authentication in challenge response format |
| 02/22/2000 | US6028935 Cryptographic receiver |
| 02/22/2000 | US6028932 Copy prevention method and apparatus for digital video system |
| 02/22/2000 | CA2120667C Method for preventing inadvertent betrayal by a trustee of escrowed digital secrets |
| 02/17/2000 | WO2000008542A1 Data processing device with means for counteracting analysis methods for the detection of a secret characteristic value |
| 02/17/2000 | WO1999049717A3 System and method for multicasting multimedia content |
| 02/16/2000 | CN1245001A Method and apparatus for providing authentication security in a wireless communication system |
| 02/16/2000 | CN1244936A Reliance server for electronic transaction system |
| 02/15/2000 | US6026421 Apparatus for multiprecision integer arithmetic |
| 02/15/2000 | US6026293 System for preventing electronic memory tampering |
| 02/15/2000 | US6026193 Video steganography |
| 02/15/2000 | US6025653 Engine start control device |
| 02/10/2000 | WO2000007327A1 Method of evaluating encryption algorithms using chaos analysis |
| 02/10/2000 | WO2000006531A2 Nitric esters and nitrate salts of specific drugs |
| 02/09/2000 | EP0978839A1 Media content protection utilizing public key cryptography |
| 02/09/2000 | EP0978800A2 Portable electronic banking apparatus |
| 02/09/2000 | CN1244321A Encryption method for information in binary code |
| 02/09/2000 | CN1049293C Method for the production of a key common to two divices for implementing a common cryptographic procedure and associated apparatus |
| 02/08/2000 | US6023689 Method for secure communication in a telecommunications system |
| 02/08/2000 | CA2064769C Encryption system |
| 02/03/2000 | WO2000005837A1 Timing attack resistant cryptographic system |
| 02/03/2000 | WO2000005835A1 An improved des encryption and decryption system and method |
| 02/03/2000 | WO2000005645A1 Circuit and method of modulo multiplication |
| 02/03/2000 | WO2000005642A1 Method and apparatus for effecting secure document format conversion |
| 02/03/2000 | WO1999057835A9 A cryptographic system and method for electronic transactions |
| 02/03/2000 | CA2338332A1 Method and apparatus for effecting secure document format conversion |
| 02/02/2000 | EP0977452A2 Method for updating secret shared data in a wireless communication system |
| 02/02/2000 | EP0977399A2 Authentication and access control in a management console program for managing services in a computer network |
| 02/02/2000 | EP0977397A2 Method for transferring sensitive information using initially unsecured communication |
| 02/02/2000 | EP0977107A2 Method and system for processing information on encryption basis |
| 02/02/2000 | EP0976221A1 Method and system for producing and checking a hash total for digital data grouped in several data segments |
| 02/02/2000 | EP0976114A2 Secure multiple application card system and process |
| 02/02/2000 | EP0976027A1 Arithmetic processor |
| 02/02/2000 | EP0781442B1 Method and device for facilitating access to a multitude of alphanumeric sequences |
| 02/01/2000 | US6021202 Method and system for processing electronic documents |
| 02/01/2000 | US6021199 Motion picture data encrypting method and computer system and motion picture data encoding/decoding apparatus to which encrypting method is applied |
| 01/31/2000 | CA2277750A1 Method for transferring sensitive information using initially unsecured communication |
| 01/31/2000 | CA2277733A1 Method for updating secret shared data in a wireless communication system |
| 01/28/2000 | CA2278075A1 Authentication and access control in a management console program for managing services in a computer network |
| 01/27/2000 | WO2000004718A1 Method and apparatus for secure communication of information between a plurality of digital audiovisual devices |
| 01/27/2000 | WO2000004717A1 A conditional access system for broadcast digital television |
| 01/27/2000 | WO2000004688A1 Method and apparatus for use of a watermark and a receiver dependent reference for the purpose of copy protection |
| 01/27/2000 | WO2000004673A1 Method of establishing the trustworthiness level of a participant in a communication connection |
| 01/27/2000 | CA2337066A1 Method and apparatus for secure communication of information between a plurality of digital audiovisual devices |
| 01/26/2000 | EP0975165A2 Receiving controlled-access broadcast signals |
| 01/26/2000 | EP0974913A1 Information processing system, enciphering/deciphering system, system lsi, and electronic apparatus |
| 01/26/2000 | EP0974230A1 Method of downloading of data to an mpeg receiver/decoder and mpeg transmission system for implementing the same |
| 01/26/2000 | EP0974229A1 Broadcast and reception system, and conditional access system therefor |
| 01/26/2000 | EP0974131A1 Dynamic data interpretation method for a chip card |
| 01/25/2000 | US6018740 Method to make a latin square |
| 01/25/2000 | US6018720 Data delivery method and system therefor |
| 01/25/2000 | US6018581 Communication system and communication method |
| 01/25/2000 | CA2049083C Information processing apparatus with replaceable security element |
| 01/20/2000 | WO2000003525A1 Method of transmitting information data from a sender to a receiver via a transcoder |
| 01/19/2000 | EP0973293A2 Public-key cryptography with increased protection against selective ciphertext attack |
| 01/19/2000 | EP0972406A1 Method and apparatus for preventing fraudulent access in a conditional access system |
| 01/19/2000 | EP0972374A1 Method and apparatus for efficient authentication and integrity checking using hierarchical hashing |
| 01/19/2000 | CN1241776A Recording and reproducing system, recording apparatus and reproducing apparatus having copy protection function |
| 01/19/2000 | CN1241763A Variable state-code anti-fake method and state-code recording carrier |
| 01/18/2000 | US6016348 Decoding system and data format for processing and storing encrypted broadcast, cable or satellite video data |
| 01/13/2000 | WO2000002340A2 Cryptographic communication process and apparatus |
| 01/12/2000 | EP0970429A2 Distributed service network |
| 01/11/2000 | US6014444 Apparatus for encrypted communication |
| 01/11/2000 | US6014442 Decrypting method and electronic device |
| 01/11/2000 | CA2168812C High-bandwidth encryption system with low-bandwidth cryptographic modules |
| 01/06/2000 | WO2000001110A1 Encryption and decryption key arrangements |
| 01/05/2000 | EP0969462A1 Recording and reproducing system, recording apparatus and reproducing apparatus having copy protection function |
| 01/05/2000 | EP0969426A1 Multi-venue ticketing using smart cards |