| 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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| 04/30/2002 | US6381331 Information sending system and method for sending encrypted information |
| 04/25/2002 | WO2002033887A2 Multiple authentication sessions for content protection |
| 04/25/2002 | WO2002033880A1 Data reproducing/recording apparatus / method and list updating method |
| 04/25/2002 | WO2002033663A1 Method for checking postage stamps on letters and parcels |
| 04/25/2002 | WO2000045550A3 Method for proving the authenticity or integrity of a message by means of a public exponent equal to the power of two |
| 04/25/2002 | US20020049912 Access control method |
| 04/25/2002 | US20020049906 Digital signature system, digital signature method, digital signature mediation method, digital signature mediation system, information terminal and storage medium |
| 04/25/2002 | US20020049676 Large capacity data sales/mediation/purchase method, system, server, terminal and recording medium recording program thereof |
| 04/25/2002 | US20020049569 Watermark detector |
| 04/25/2002 | EP1145482A3 Method for proving the authenticity or integrity of a message by means of a public exponent equal to the power of two |
| 04/25/2002 | CA2426520A1 Method for checking postage stamps on letters and parcels |
| 04/24/2002 | EP1199628A1 Calculation unit for determining the inverse of an integer modulo of a big number |
| 04/24/2002 | EP1198921A2 Method for countermeasure in an electronic component using a secret key algorithm |
| 04/24/2002 | CN1346558A Secure system using continuous-changing features of body part as a key |
| 04/24/2002 | CN1346481A Method and system for ordering, loading and using access tickets |
| 04/23/2002 | US6377688 Cryptographic communication method and system |
| 04/23/2002 | US6377687 Methods and apparatus for enhanced CMEA employing enhanced transformations |
| 04/23/2002 | CA2225936C Value transfer system |
| 04/18/2002 | WO2002032047A1 Remote printing of secure and/or authenticated documents |
| 04/18/2002 | US20020046353 User authentication method and user authentication server |
| 04/18/2002 | US20020046340 Certificate validity authentication method and apparatus |
| 04/18/2002 | US20020046336 Information processing apparatus, information processing method, and program providing medium |
| 04/18/2002 | US20020044649 Method for accelerating cryptographic operations on elliptic curves |
| 04/18/2002 | DE10048553A1 Modular communications data encoder has motherboard that can be combined with different plug-in modules for different interfaces enabling encoding or transmission via different protocols |
| 04/17/2002 | EP1197828A1 Remote printing of secure and/or authenticated documents |
| 04/17/2002 | CN2487059Y Intelligent anti-fake tax control machine |
| 04/17/2002 | CN2487058Y Anti-fake tax control card for safety access |
| 04/17/2002 | CN1345496A Countermeasure method in electric componnet implementing elliptical curve type public key cryptography algorithm |
| 04/17/2002 | CN1345495A Countermeasure procedures in electronic component implementing elliptical curve type public key encryption algorithm |
| 04/17/2002 | CN1083202C Videophone interactive mainbox facility system |
| 04/11/2002 | WO2002029577A2 Method and apparatus for automatic database encryption |
| 04/11/2002 | WO2001084772A3 Generation of keyed integer permutations for message authentication codes |
| 04/11/2002 | US20020042884 Remote printing of secure and/or authenticated documents |
| 04/11/2002 | US20020042876 Method and apparatus for effecting secure document format conversion |
| 04/11/2002 | US20020042270 Radio communication system and method having a radio link control layer |
| 04/11/2002 | US20020041684 Public-key encryption and key-sharing methods |
| 04/11/2002 | US20020041681 Speed enhanced cryptographic method and apparatus |
| 04/10/2002 | EP1195923A2 Radio communication system having radio link control layer and data processing method in the same |
| 04/10/2002 | EP1195734A1 Data authentication system |
| 04/10/2002 | EP1195684A1 Data recording/reproducing device and saved data processing method, and program providing medium |
| 04/10/2002 | CN1344453A Method for verifying message signature |
| 04/10/2002 | CN1344396A Portable electronic charge and authorization devices and methods therefor |
| 04/10/2002 | CN1343934A Device and method for information output and recording, information output recording system and medium thereof |
| 04/09/2002 | US6370629 Controlling access to stored information based on geographical location and date and time |
| 04/04/2002 | WO2000046947A3 Method, system, device for proving the authenticity of an entity and/or the integrity and/or the authenticity of a message using specific prime factors |
| 04/04/2002 | US20020040437 Semiconductor memory device internally provided with logic circuit which can be readily controlled and controlling method thereof |
| 04/04/2002 | US20020040432 Anti-alternation system for homepage |
| 04/04/2002 | US20020040431 Computer program product and method for exchanging XML signature |
| 04/04/2002 | US20020039419 Encrypting device and method of encrypting |
| 04/04/2002 | US20020039418 Extending the range of computational fields of integers |
| 04/04/2002 | EP1145473A3 Method, system, device for proving the authenticity of an entity and/or the integrity and/or the authenticity of a message using specific prime factors |
| 04/03/2002 | EP1193665A1 Block encryption device using auxiliary conversion |
| 04/03/2002 | EP1193620A2 Encrypted file retrieval method and device and computer-readable recording medium |
| 04/03/2002 | EP1193585A2 Encrypted file system, encrypted file retrieval method, and computer-readable medium |
| 04/03/2002 | EP1192752A1 Modulated message authentication system and method |
| 04/03/2002 | EP0942856B1 Process for securing the privacy of data transmission |
| 04/03/2002 | EP0876722B1 Secure anonymous information exchange in a network |
| 04/03/2002 | CN1342950A Antiforge method for commodities |
| 04/02/2002 | US6367016 Method for controlling access to electronically provided services and system for implementing such method |
| 04/02/2002 | US6367014 Enhanced short message and method for synchronizing and ensuring security of enhanced short messages exchanged in a cellular radio communication system |
| 04/02/2002 | US6366894 Value transfer system |
| 04/02/2002 | US6366673 Method and device for executing a decrypting mechanism through calculating a standardized modular exponentiation for thwarting timing attacks |
| 04/02/2002 | CA2136287C Apparatus for avoiding complementarity in an encryption algorithm |
| 03/28/2002 | WO2002025662A1 Distribution of content |
| 03/28/2002 | WO2001089129A3 Extending the range of computational fields of integers |
| 03/28/2002 | US20020038421 Encrypted file system, encrypted file retrieval method, and computer-readable medium |
| 03/28/2002 | US20020037082 Encrypted file retrieval method and device and computer-readable recording medium |
| 03/28/2002 | CA2357585A1 Encrypted file retrieval method and device and computer-readable recording medium |
| 03/27/2002 | EP1191421A2 Tamper resistant software protection method with renewable security mechanism |
| 03/27/2002 | EP1190294A1 Robust random number generator |
| 03/27/2002 | EP1190291A1 Public cryptographic control unit and system therefor |
| 03/27/2002 | CN1342343A Variable-length decoding |
| 03/27/2002 | CN1341912A Cipher anti-false method |
| 03/27/2002 | CA2357584A1 Encrypted file system, encrypted file retrieval method, and computer-readable medium |
| 03/26/2002 | US6363488 Systems and methods for secure transaction management and electronic rights protection |
| 03/26/2002 | US6363483 Methods and systems for performing article authentication |
| 03/26/2002 | US6363365 Mechanism for secure tendering in an open electronic network |
| 03/26/2002 | US6363159 Consumer audio appliance responsive to watermark data |
| 03/26/2002 | US6363153 Method and apparatus for secure digital chaotic communication |
| 03/21/2002 | WO2002023887A2 Imaging system monitored or controlled to ensure fidelity of file captured |
| 03/21/2002 | US20020035685 Client-server system with security function intermediary |
| 03/21/2002 | US20020035586 Method and apparatus for generating numbers |
| 03/21/2002 | US20020035544 Method and apparatus for forming content, method and apparatus for reproducing content and computer readable storage medium |
| 03/21/2002 | US20020034295 Cryptographic method and apparatus for non-linearly merging a data block and a key |
| 03/21/2002 | CA2422242A1 Imaging system monitored or controlled to ensure fidelity of file captured |
| 03/20/2002 | EP1189429A2 Digital imaging device with image authentication capability |
| 03/20/2002 | EP1189407A2 Client-server system with securita function intermediary |
| 03/20/2002 | EP1189184A2 Authentication method, authentication system, payment system, user apparatus and recording medium containing program for conducting authentication |
| 03/20/2002 | EP1189157A2 IC card system and IC card |
| 03/20/2002 | EP1188315A2 Conditional access system |
| 03/20/2002 | EP0717898B1 A method of messaging in a communication system |
| 03/20/2002 | CN1340795A Method and system for preventing electronic file pirary |
| 03/19/2002 | US6359986 Encryption system capable of specifying a type of an encrytion device that produced a distribution medium |
| 03/14/2002 | WO2002021803A2 Providing secure network access for short-range wireless computing devices |
| 03/14/2002 | WO2002021768A2 Location-independent packet routing and secure access in a short-range wireless networking environment |
| 03/14/2002 | WO2002021761A2 Apparatus and method for selectively encrypting different the payload portion of multimedia data sent over a network |
| 03/14/2002 | WO2002021363A1 Settlement system |
| 03/14/2002 | US20020032866 Shared image generation apparatus and method, computer program, and computer readable storage medium |
| 03/14/2002 | US20020032859 Authentication method, authentication system, semiconductor circuit and authentication module |
| 03/14/2002 | US20020032857 Person identification certificate link system, information processing apparatus, information processing method, and program providing medium |