| 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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| 05/23/2001 | EP1101376A1 Security module, security system and mobile station |
| 05/23/2001 | EP1101331A1 Apparatus for securing user's information in a mobile communication system connected to the internet and method thereof |
| 05/23/2001 | CN1296695A Recording of scrambled digital data |
| 05/22/2001 | US6237097 Robust efficient distributed RSA-key generation |
| 05/22/2001 | US6237096 System and method for electronic transmission storage and retrieval of authenticated documents |
| 05/22/2001 | US6236971 System for controlling the distribution and use of digital works using digital tickets |
| 05/22/2001 | US6236727 Apparatus, method and computer program product for protecting copyright data within a computer system |
| 05/17/2001 | WO2001035572A2 Method and apparatus for efficient irregular synchronization of a stream cipher |
| 05/17/2001 | WO2001035194A2 Method and apparatus for providing redundant and resilient cryptographic services |
| 05/17/2001 | CA2389397A1 Method and apparatus for efficient irregular synchronization of a stream cipher |
| 05/16/2001 | EP1100035A1 Information processing device and method, and providing medium |
| 05/16/2001 | EP1099323A1 Encryption and decryption key arrangements |
| 05/16/2001 | EP1098870A2 Nitric esters and nitrate salts of specific drugs |
| 05/15/2001 | USRE37178 Method and apparatus for authentication of client server communication |
| 05/15/2001 | US6233577 Centralized certificate management system for two-way interactive communication devices in data networks |
| 05/15/2001 | US6233337 Methods and apparatus for enhanced security expansion of a secret key into a lookup table for improved security for wireless telephone messages |
| 05/10/2001 | WO2001033766A2 Random number generation for encrypting cellular communications |
| 05/10/2001 | WO2001033765A1 Encoding device |
| 05/09/2001 | EP1098469A1 Coding procedure and device |
| 05/09/2001 | EP1098311A1 Revocation information updating method, revocation information updating apparatus and storage medium |
| 05/09/2001 | EP1097589A1 A conditional access system for broadcast digital television |
| 05/09/2001 | EP1097553A1 Method of transmitting information data from a sender to a receiver via a transcoder |
| 05/09/2001 | EP1097541A1 Timing attack resistant cryptographic system |
| 05/09/2001 | EP0795240A4 Message protection system and method |
| 05/09/2001 | CN2429878Y Electric controlled coding lock |
| 05/08/2001 | US6230179 Finite field multiplier with intrinsic modular reduction |
| 05/03/2001 | WO2001031877A2 Mobile phone incorporating security firmware |
| 05/03/2001 | WO2001031794A1 Variable-length decoding |
| 05/03/2001 | WO2001031435A2 Method for multiplying divisor classes with a scalar |
| 05/03/2001 | CA2389157A1 Method for multiplying divisor classes by a scalar |
| 05/03/2001 | CA2388114A1 Methods and arrangements in a telecommunications system |
| 05/02/2001 | EP1096722A2 Authentication information communication system and method, portable information processing device and program furnishing medium |
| 05/02/2001 | EP1096450A2 Automated teller machine and method therof |
| 05/02/2001 | EP1095484A1 Method of establishing the trustworthiness level of a participant in a communication connection |
| 05/02/2001 | EP1095343A1 Technique for securing a system configuration of a postage franking system |
| 05/01/2001 | US6226743 Method for authentication item |
| 05/01/2001 | US6226618 Electronic content delivery system |
| 05/01/2001 | US6226382 Method for implementing a private-key communication protocol between two processing devices |
| 04/26/2001 | WO2001030104A1 Authentication of subscriber station |
| 04/26/2001 | WO2001029652A2 A cryptographic accelerator |
| 04/26/2001 | DE10003472C1 Random number generator on IC with significantly improved independence of both signals |
| 04/25/2001 | EP1094682A1 Mobile phone incorporating security firmware |
| 04/25/2001 | EP1094603A1 A random pulse generator, a random number generator and a probability random event generator |
| 04/25/2001 | CN1065055C Scheme for authentication of at least one prover by a verifier |
| 04/19/2001 | WO2001027903A1 Means for encoding of numeric sequences |
| 04/17/2001 | US6219421 Virtual matrix encryption (VME) and virtual key cryptographic method and apparatus |
| 04/17/2001 | CA2036489C Block-cipher cryptographic device based upon a pseudorandom nonlinear sequence generator |
| 04/12/2001 | WO2001025880A2 Method for producing and checking forge-proof documents |
| 04/12/2001 | WO1998008344B1 Method and apparatus for viewing electronic reading materials |
| 04/12/2001 | CA2425184A1 Method for producing and checking forge-proof documents |
| 04/11/2001 | EP1090480A2 Improved des and other cryptographic processes with leak minimization for smartcards and other cryptosystems |
| 04/11/2001 | EP1090479A1 Signature verification and authentication method |
| 04/11/2001 | EP1090477A2 Block ciphers with integer multiplication, data-dependent and fixed number of rotations in each round |
| 04/11/2001 | CN1291396A Communication system and communication method |
| 04/11/2001 | CN1291313A A remotely accessible private space using a fingerprint |
| 04/10/2001 | US6216229 Method for preventing inadvertent betrayal by a trustee of escrowed digital secrets |
| 04/10/2001 | US6216227 Multi-venue ticketing using smart cards |
| 04/10/2001 | US6215875 Cipher processing system |
| 04/05/2001 | WO2001024437A2 Systems and methods for authenticating an electronic message |
| 04/05/2001 | WO2001023981A1 Authentification of digital data works using signatures and watermarks |
| 04/05/2001 | CA2386484A1 Systems and methods for authenticating an electronic message |
| 04/04/2001 | EP1089241A2 Digital data copyright protection system |
| 04/04/2001 | EP1088433A1 Method and apparatus for secure data transmission system |
| 04/04/2001 | EP1088420A1 A technique for producing privately authenticatable cryptographic signatures and for using such a signature in conjunction with a product copy |
| 04/04/2001 | EP0864124A4 An improved pseudo-random generator |
| 04/04/2001 | CN1290454A System for processing and information signal |
| 04/04/2001 | CN1290440A Method and system for consumer electronic device certificate management |
| 03/28/2001 | EP1087425A1 Method for the cryptographic conversion of binary data blocks |
| 03/28/2001 | EP1086547A1 Method for making secure one or several computer installations using a common cryptographic secret key algorithm, use of the method and computer installation |
| 03/28/2001 | EP0681768B1 A method and apparatus for generating a cipher stream |
| 03/28/2001 | CN1289100A Method and apparatus for only identifying purchase of customer in electronic vending system |
| 03/27/2001 | US6209099 Secure data processing method and system |
| 03/27/2001 | US6209095 Method and system for processing electronic documents |
| 03/27/2001 | US6209016 Co-processor for performing modular multiplication |
| 03/22/2001 | WO2001020431A2 Method, article and apparatus for registering registrants, such as voter registrants |
| 03/22/2001 | DE19963962C1 Pseudo-random generator for radio transmitter or receiver uses registers coupled to arithmetic-logic unit providing pseudo-random words and processor controlling pseudo-random generator sequence |
| 03/21/2001 | EP1085443A2 Method and apparatus for uniquely identifying a customer purchase in an electronic distribution system |
| 03/21/2001 | EP0872075A4 Wireless transaction and information system |
| 03/21/2001 | CN1288633A Method for confirming the integrity of an image transmitted with a loss |
| 03/20/2001 | US6205550 Tamper resistant methods and apparatus |
| 03/20/2001 | US6204981 Method for superimposing and detecting additional information signal, method for detecting additional information signal, device for detecting additional information signal, and device for recording information signal |
| 03/14/2001 | EP1083700A2 Hybrid digital signature scheme |
| 03/14/2001 | EP1083529A2 Data storing system, issuing apparatus, data providing apparatus and computer readable medium storing data storing program |
| 03/14/2001 | EP1082723A1 Usage dependent ticket to protect copy-protected material |
| 03/14/2001 | EP0706734B1 Cryptographic authentication of transmitted messages using pseudo random numbers |
| 03/14/2001 | CN1287357A Recording medium using for content data and reproducing equipment using the same |
| 03/08/2001 | WO2001017159A1 Multiple module encryption method |
| 03/08/2001 | WO2001016899A2 Portable terminal |
| 03/08/2001 | WO2001016821A2 Distribution system, semiconductor memory card, receiving apparatus, computer-readable recording medium and receiving method |
| 03/08/2001 | WO2001016671A1 Digital data copyright protection system |
| 03/08/2001 | CA2383042A1 Multiple module encryption method |
| 03/08/2001 | CA2348769A1 Digital data copyright protection system |
| 03/07/2001 | EP1081912A2 Method and system for distributing multimedia data with management information |
| 03/07/2001 | EP1081891A2 Autokey initialization of cryptographic devices |
| 03/07/2001 | EP1081888A2 Encryption method, encryption apparatus, decryption method, and decryption apparatus |
| 03/07/2001 | EP1081616A2 Distribution system, semiconductor memory card, receiving apparatus, computer-readable recording medium, and receiving method |
| 03/07/2001 | EP1080559A1 Method for secure distribution of data |
| 03/07/2001 | EP1080400A1 Method and device for processing data |
| 03/07/2001 | CN1286855A Cryptographic conversion of binary data blocks |
| 03/07/2001 | CN1286768A Data processing device with means for counteracting analysis methods for detection of secret characteristic value |