| 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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| 07/12/2001 | DE19963407A1 Tragbarer Datenträger mit Zugriffsschutz durch Nachrichtenverfremdung A portable data carrier with access protection by news alienation |
| 07/12/2001 | DE10000503A1 Datenverarbeitungseinrichtung und Verfahren zu dessen Betrieb Data processing device and method for its operation |
| 07/12/2001 | DE10000502A1 Random number sequence generation method e.g. for smart card, has outputs of flip-flops controlled by sampled outputs of independent frequency oscillators combined via logic element |
| 07/12/2001 | CA2392739A1 Cryptographic isolator using multiplication |
| 07/11/2001 | EP1115094A2 Data processing device and its method of operation |
| 07/11/2001 | EP1115093A2 Data processing device and its method of operation |
| 07/11/2001 | EP1115078A2 Electronic data management system and method |
| 07/11/2001 | CN1303493A Method and device for processing data |
| 07/10/2001 | US6260028 Token generation process in an open metering system |
| 07/10/2001 | US6259790 Secret communication and authentication scheme based on public key cryptosystem using N-adic expansion |
| 07/05/2001 | WO2001048974A1 Portable data carrier provided with access protection by dividing up codes |
| 07/05/2001 | WO2001048755A1 Recording apparatus, reproducing apparatus, data processing apparatus, recording/reproducing apparatus, and data transmitting apparatus |
| 07/05/2001 | WO2001048706A1 Portable data carrier provided with access protection by rendering messages unfamiliar |
| 07/05/2001 | WO2001048594A2 Computer efficient linear feedback shift register |
| 07/05/2001 | WO2000027090A9 Network protocol for secure communications |
| 07/05/2001 | CA2392706A1 Computer efficient linear feedback shift register |
| 07/04/2001 | EP1113617A2 System and method for transferring the right to decode messages |
| 07/04/2001 | EP1112637A1 Elliptic curve cryptosystems for low memory devices |
| 07/04/2001 | CN1302168A Method for determining terminal beginning preparation |
| 07/03/2001 | US6256736 Secured signal modification and verification with privacy control |
| 07/03/2001 | US6256391 Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method |
| 07/03/2001 | US6253997 Automated teller's machine and method thereof |
| 06/28/2001 | WO2001047266A2 Conditional access system |
| 06/28/2001 | WO2001046787A2 Method of authenticating users of software |
| 06/28/2001 | US20010005884 Communication method and communication system |
| 06/28/2001 | US20010005423 Steganographic system with changing operations |
| 06/28/2001 | DE10053894A1 Verfahren und Apparat zur Sicherung der Datenübertragung von medizinischen Vorrichtungssystemen Method and apparatus for securing data transmission of medical device systems |
| 06/27/2001 | EP1111870A2 Communication method and communication system |
| 06/27/2001 | EP1111559A2 Securing electronic transactions over public networks |
| 06/27/2001 | EP1111530A1 Information processing device and method, and providing medium |
| 06/27/2001 | EP1110401A1 Secure information distribution system utilizing information segment scrambling |
| 06/27/2001 | EP1110393A1 A copy protection system for home networks |
| 06/27/2001 | EP1110140A1 Computing method for elliptic curve cryptography |
| 06/27/2001 | CN1301442A Authentification of data in a digital transmission system |
| 06/27/2001 | CN1301003A Antiforge bar code |
| 06/27/2001 | CN1301002A Encoding of natural things, conversion between any two digital systems, and their application |
| 06/26/2001 | US6253322 Electronic certification authentication method and system |
| 06/26/2001 | US6253223 Robust random number generator |
| 06/26/2001 | US6253193 Systems and methods for the secure transaction management and electronic rights protection |
| 06/26/2001 | US6252961 Method and apparatus for performing data encryption and error code correction |
| 06/26/2001 | US6252869 Data network security system and method |
| 06/23/2001 | CA2329492A1 Securing electronic transactions over public networks |
| 06/21/2001 | WO2001044941A1 Accessing a secure resource using certificates bound with authentication information |
| 06/21/2001 | WO2001044908A1 Server for an electronic distribution system and method of operating same |
| 06/21/2001 | WO2001044900A2 Branch-else-return instruction |
| 06/21/2001 | WO2000013412A9 A copy protection system for home networks |
| 06/21/2001 | US20010004231 Secure system using images of only part of a body as the key where the part has continuously-changing features |
| 06/20/2001 | EP0739560B1 Cryptographic system and method with key escrow feature |
| 06/20/2001 | CN1300428A System and method for copy protection for digital signals |
| 06/20/2001 | CN1300405A Information processing device and method, and providing medium |
| 06/20/2001 | CN1300402A Information processing device and method, and providing medium |
| 06/19/2001 | US6249873 Method of and apparatus for providing secure distributed directory services and public key infrastructure |
| 06/19/2001 | US6249867 Method for transferring sensitive information using initially unsecured communication |
| 06/19/2001 | US6249866 Encrypting file system and method |
| 06/19/2001 | CA2224661C Use of an encryption server for encrypting messages |
| 06/14/2001 | WO2001043367A1 Method and apparatus for implementing leaf node proxy in a network |
| 06/14/2001 | WO2001043340A1 One's complement cryptographic combiner |
| 06/14/2001 | WO2001043339A1 Device for reproducing data |
| 06/14/2001 | WO2001043108A1 Key control system and key control method |
| 06/14/2001 | CA2394435A1 One's complement cryptographic combiner |
| 06/13/2001 | EP1105998A1 Method and device for creating a secret communication key for a predetermined asymmetric and cryptographic key-pair |
| 06/13/2001 | EP1105997A1 Method for testing a random number source and electronic devices comprising said method |
| 06/13/2001 | EP1105996A1 System and method for enabling secure access to services in a computer network |
| 06/13/2001 | EP1105994A1 Time-stamping with binary linking schemes |
| 06/13/2001 | EP1105791A1 Method and apparatus for effecting secure document format conversion |
| 06/13/2001 | EP0885504B1 Data transmission network billing method |
| 06/13/2001 | EP0818007A4 Method and means for interconnecting different security level networks |
| 06/13/2001 | EP0671091A4 Method for key management of point-to-point communications |
| 06/13/2001 | CN1299548A Method of transmitting information data from a sender to a receiver via a transcoder |
| 06/13/2001 | CN1299544A Method of establishing the trustorthiness level of a participant in a communication connection |
| 06/13/2001 | CN1299543A pseudo-random squence generator and associated method |
| 06/13/2001 | CN1299497A Method for authenticating a chip card in a message transmission network |
| 06/12/2001 | CA2262549C Accelerating public-key cryptography by precomputing randomly generated pairs |
| 06/12/2001 | CA2083070C Non-contact tamper sensing by electronic means |
| 06/07/2001 | WO2001040950A2 Microprocessor arrangement having an encoding function |
| 06/07/2001 | WO2001011818A3 Method and apparatus for generating a message authentication code |
| 06/07/2001 | WO2000010284A8 Method for improving random testing |
| 06/07/2001 | US20010002929 Message authentication |
| 06/06/2001 | EP1104960A1 Message authentication |
| 06/06/2001 | EP1104959A2 A cryptographic protocol for secure communications |
| 06/06/2001 | EP1104555A2 System for tracking end-user electronic content usage |
| 06/05/2001 | US6243811 Method for updating secret shared data in a wireless communication system |
| 06/03/2001 | CA2327531A1 Method of virtual private network communication in security gateway apparatus and security gateway apparatus using the same |
| 05/31/2001 | WO2001039004A1 Employing synthetic genes in genetic algorithms, information encoding and non-replicative encryption |
| 05/31/2001 | CA2384910A1 Information encoding and retrieval through synthetic genes |
| 05/30/2001 | CN1297636A Procedure and system for reliable and safe identification of contracting party |
| 05/30/2001 | CN1297635A Elliptic curve cryptographic process and device for computer |
| 05/30/2001 | CN1297320A Method for identification of data in terminal |
| 05/30/2001 | CN1297214A Method for supporting simplified and unsimplified Chinese characters on reading mail |
| 05/29/2001 | US6240436 High speed montgomery value calculation |
| 05/29/2001 | US6240186 Simultaneous bi-directional translation and sending of EDI service order data |
| 05/29/2001 | US6237786 Systems and methods for secure transaction management and electronic rights protection |
| 05/29/2001 | CA2115063C Nonlinear dynamic substitution devices and methods for block substitutions |
| 05/23/2001 | EP1102452A2 Primary provisioning of a validation procedure for a terminal |
| 05/23/2001 | EP1102451A2 Validation procedure of data in a terminal |
| 05/23/2001 | EP1102155A2 Method and apparatus for verifying the legitimacy of an untrusted mechanism |
| 05/23/2001 | EP1102154A2 Mechanism for determining restrictions to impose on an implementation of a service |
| 05/23/2001 | EP1102153A2 Mechanism for merging multiple policies |
| 05/23/2001 | EP1102152A2 Mechanism for dynamically constructing customized implementations to enforce restrictions |
| 05/23/2001 | EP1102151A2 Object oriented mechanism for dynamically constructing customized implementations to enforce restrictions |