| 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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| 07/29/1998 | CN1189032A Process for data certification by scrambling and certification system using such process |
| 07/28/1998 | US5786784 Remote-control device for a video receiver |
| 07/23/1998 | WO1998032306A2 Method and apparatus for providing authentication security in a wireless communication system |
| 07/23/1998 | CA2277822A1 Method and apparatus for providing authentication security in a wireless communication system |
| 07/22/1998 | EP0854624A1 Method for generating a random number using a radio signal |
| 07/14/1998 | US5781863 Pre-location of authentication information in a personal communication network |
| 07/14/1998 | US5781630 Method and device for accurately dating an electronic document |
| 07/14/1998 | US5781629 Digital document authentication system |
| 07/14/1998 | US5781438 Token generation process in an open metering system |
| 07/09/1998 | WO1998029981A1 Method and apparatus for secure storage of data |
| 07/09/1998 | WO1998029843A1 Dynamic data interpretation method for a chip card |
| 07/09/1998 | WO1998010611A3 System for preventing electronic memory tampering |
| 07/09/1998 | CA2275940A1 Dynamic data interpretation method for a chip card |
| 07/08/1998 | EP0852044A1 Method and apparatus for user authentication |
| 07/07/1998 | US5778072 System and method to transparently integrate private key operations from a smart card with host-based encryption services |
| 07/07/1998 | US5778065 Method and system for changing an authorization password or key in a distributed communication network |
| 07/07/1998 | CA2054731C Distributed information system having automatic invocation of key management negotiations protocol and method |
| 07/02/1998 | WO1998028719A1 Method for secure transfer of data by a communication network |
| 07/01/1998 | EP0851629A2 Key management method, encryption system, and sharing digital signature system which have hierarchies |
| 07/01/1998 | EP0850523A1 Document authentication system and method |
| 07/01/1998 | CN1186580A Computer-assisted method for exchange of crytographic keys between user computer and network computer unit |
| 07/01/1998 | CN1186579A Process for computer-controlled exchange of cryptographic keys between first and second computer unit |
| 07/01/1998 | CN1186390A Method and apparatus for sending electronic data signals |
| 06/30/1998 | US5774553 Foreign exchange transaction system |
| 06/30/1998 | US5774552 Method and apparatus for retrieving X.509 certificates from an X.500 directory |
| 06/30/1998 | CA2081258C System for authenticating communication participants |
| 06/25/1998 | WO1998026962A1 Process for securing the privacy of data transmission |
| 06/24/1998 | EP0849658A2 Secure data processing method and system |
| 06/24/1998 | EP0849657A1 Secure data processing method and system |
| 06/24/1998 | EP0848872A1 Method and device for the sealing of computer data |
| 06/18/1998 | WO1998026536A1 Public key cryptographic apparatus and method |
| 06/18/1998 | WO1998026535A1 Cryptographically protected paging subsystem |
| 06/18/1998 | WO1998026385A2 Reliance server for electronic transaction system |
| 06/18/1998 | WO1998026381A1 Method and system for performing electronic money transactions |
| 06/18/1998 | DE19652256A1 Verfahren zur Sicherung der Datenübertragung Method for security of data transmission |
| 06/18/1998 | CA2274897A1 Reliance server for electronic transaction system |
| 06/17/1998 | EP0848518A2 Method and apparatus for generating a hash value |
| 06/17/1998 | EP0848361A1 Method and system for performing money transactions |
| 06/17/1998 | EP0848316A2 System and method for secure information transmission over a network |
| 06/17/1998 | EP0847649A1 Method and apparatus for operating a transactional server in a proprietary database environment |
| 06/17/1998 | EP0829056A4 Secure method and system for communicating a list of credit card numbers over a non-secure network |
| 06/16/1998 | US5768387 Key authentication method and key authentication apparatus |
| 06/16/1998 | US5768381 Apparatus for key distribution in an encryption system |
| 06/16/1998 | US5768379 System for the checking of limited access to authorized time slots renewable by means of a portable storage device |
| 06/16/1998 | US5768378 Key distribution in a multiple access network using quantum cryptography |
| 06/09/1998 | US5764771 Method for processing a digital signal in a so-called secure communication system and use of this method for access control and/or binary signature |
| 06/09/1998 | US5764765 Method of communication |
| 06/09/1998 | US5764761 Eletronic assembly with integrated circuit devices including lock circuitry |
| 06/09/1998 | US5764554 Method for the implementation of modular reduction according to the Montgomery method |
| 06/04/1998 | WO1998024237A1 A decoding apparatus/method and data format for processing and storing encrypted video data |
| 06/04/1998 | WO1998024236A1 Method of processing encrypted video data for generating decrypted program data |
| 06/04/1998 | DE19718103A1 Data transmission system authorise method e.g. for telebanking |
| 06/03/1998 | EP0845733A2 Implementing digital signatures for data streams and data archives |
| 06/03/1998 | CN1183841A System and method for secure transaction management and electronic rights protection |
| 06/03/1998 | CN1183685A Encryption decoding method. record reproduction device and record medium |
| 06/02/1998 | US5761310 Communication system for messages enciphered according to an RSA-type procedure |
| 06/02/1998 | US5761302 Copy prevention method and apparatus for digital video system |
| 05/28/1998 | WO1998023061A1 Method for signing and/or authenticating electronic messages |
| 05/28/1998 | CA2271989A1 Method for signing and/or authenticating electronic messages |
| 05/27/1998 | EP0844762A2 Method for secure message exchange for mass services as well as subscriber apparatus and server apparatus herefor |
| 05/27/1998 | CN1182992A Method for protecting information term transferred from secret unit to decoder |
| 05/27/1998 | CN1182916A Applied program package and system allowing user using said program package according to condition |
| 05/26/1998 | US5757920 Logon certification |
| 05/26/1998 | US5757919 Cryptographically protected paging subsystem |
| 05/26/1998 | US5757917 Computerized payment system for purchasing goods and services on the internet |
| 05/26/1998 | US5757916 Method and apparatus for authenticating the location of remote users of networked computing systems |
| 05/26/1998 | US5757915 Parameterized hash functions for access control |
| 05/26/1998 | US5757913 Method and apparatus for data authentication in a data communication environment |
| 05/26/1998 | US5757912 System and method for quantum cryptography |
| 05/26/1998 | US5757907 Method and apparatus for enabling trial period use of software products: method and apparatus for generating a machine-dependent identification |
| 05/26/1998 | CA2151590C Method of extending the validity of a cryptographic certificate |
| 05/22/1998 | WO1998021677A1 Personal electronic settlement system, its terminal, and management apparatus |
| 05/20/1998 | EP0843479A1 Process for data certification by scrambling and certification system using such a process |
| 05/20/1998 | EP0843449A2 Encryption system with transaction coded decryption key |
| 05/20/1998 | EP0843438A2 Process for protecting an information item transmitted from a security element to a decoder and protection system using such a process |
| 05/20/1998 | EP0843249A1 Dynamic classes of service for an international cryptography framework |
| 05/20/1998 | CN1182492A Data-transmission device for use in vehicle and pulse generator thereof |
| 05/19/1998 | US5754659 Generation of cryptographic signatures using hash keys |
| 05/19/1998 | US5754656 Electronic shopping method, electronic shopping system and document authenticating method relating thereto |
| 05/19/1998 | CA2068488C Hybrid public key algorithm/data encryption algorithm key distribution method based on control vectors |
| 05/14/1998 | WO1998020672A2 Method and apparatus for imprinting id information into a digital content and for reading out the same |
| 05/14/1998 | WO1998020643A1 Method for data decorrelation |
| 05/14/1998 | WO1998020641A1 System and method for providing security in data communication systems |
| 05/14/1998 | DE19702049C1 Chipcard cryptographic key certification method |
| 05/14/1998 | CA2271106A1 Method and apparatus for imprinting id information into a digital content and for reading out the same |
| 05/14/1998 | CA2270261A1 System and method for providing security in data communication systems |
| 05/13/1998 | EP0841604A2 Personal date/time notary device |
| 05/13/1998 | CN1181567A Seal anti-forged system |
| 05/13/1998 | CN1181560A Apparatus for authenticating user and method therefor |
| 05/13/1998 | CN1038367C 数据存储装置 Data storage means |
| 05/12/1998 | US5751813 Use of an encryption server for encrypting messages |
| 05/12/1998 | US5751810 Bit agitator |
| 05/12/1998 | US5751808 Multi-purpose high speed cryptographically secure sequence generator based on zeta-one-way functions |
| 05/12/1998 | US5751806 Audio information dissemination using various transmission modes |
| 05/12/1998 | US5751620 Method for the production of an error correction parameter associated with the implementation of modular operations according to the Montgomery method |
| 05/08/1998 | CA2220457A1 Encryption system with transaction coded decryption key |
| 05/07/1998 | WO1998019231A1 Co-processor for performing modular multiplication |
| 05/07/1998 | WO1998019230A1 Co-processor for performing modular multiplication |
| 05/07/1998 | WO1998008344A3 Method and apparatus for viewing electronic reading materials |
| 05/06/1998 | EP0840480A2 One-way data conversion apparatus and device |