Patents
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)
01/2003
01/08/2003EP1272988A2 An improved method and system for conducting secure payments over a computer network
01/08/2003EP1272984A1 Portable data carrier provided with access protection by rendering messages unfamiliar
01/08/2003CN1390406A Mehtod and apparatus for efficient irregular synchronization of a stream cipher
01/08/2003CN1390056A Method for transfering data signal and controlling access data signal
01/08/2003CN1390055A Method for controlling reproduction, usage and access of data signals on recording medium
01/08/2003CN1390054A Method for controlling reproduction of data signal on medium, and transfering and receiving data signal method
01/08/2003CN1390053A Apparatus and method for receiving, recording and replaying data signal
01/08/2003CN1390052A Method for controlling replay of data signal
01/08/2003CN1390043A Method for erasing data signal stored on recording medium
01/08/2003CN1390042A Apparatus and method for receiving enciphered signals and apparatus for receiving interfered digital broadcas
01/08/2003CN1390005A Safety marking network system and its data processing method
01/08/2003CN1389993A Method for controlling use of enciphered data
01/08/2003CN1389836A Identity confirming method and citizen archive system
01/08/2003CN1389819A Anti-fake method combining cipher and product number
01/08/2003CN1098581C Use of an encryption server for encrypting messages
01/07/2003US6505180 Information encoding and retrieval through synthetic genes
01/07/2003US6504931 Method and apparatus for encrypting data
01/07/2003US6504930 Encryption and decryption method and apparatus using a work key which is generated by executing a decryption algorithm
01/07/2003US6504929 Encryption strength evaluation support apparatus and recording medium recording encryption strength evaluation support program
01/03/2003WO2003001464A1 Cryptographic method of protecting an electronic chip against fraud
01/03/2003WO2003001363A1 Electronic vouchers and a system and method for issuing the same
01/03/2003WO2003001362A2 A method and apparatus for carrying out efficiently arithmetic computations in hardware
01/03/2003WO2002043044A9 Display device and methods of manufacture and control
01/03/2003WO2002015512A3 A method and an apparatus for granting use of a session of a packet data transmission standard designated by an identifier
01/03/2003CA2451616A1 Electronic vouchers and a system and method for issuing the same
01/03/2003CA2451034A1 Cryptographic method of protecting an electronic chip against fraud
01/02/2003US20030005333 System and method for access control
01/02/2003US20030005280 Method and system for integrating security mechanisms into session initiation protocol request messages for client-proxy authentication
01/02/2003US20030004894 System, method and article of manufacture for secure network electronic payment and credit collection
01/02/2003US20030004881 Confidential information management system and information terminal for use in the system
01/02/2003US20030002665 Encrypting apparatus, encrypting method, decrypting apparatus, decrypting method, and storage medium
01/02/2003US20030002663 Method and apparatus for data encryption
01/02/2003EP1271839A2 AES Encryption circuit
01/02/2003EP1271304A2 Method for calculating the modular inverses of two numbers
01/02/2003EP1269681A1 Authentication of data transmitted in a digital transmission system
01/02/2003EP1269431A1 Method for protecting an electronic chip against fraud
01/02/2003EP1269429A2 Method and system for secure payments over a computer network
01/02/2003EP0941610B1 Method of processing encrypted video data for generating decrypted program data
01/02/2003EP0937348A4 System and method for providing security in data communication systems
01/01/2003CN1388929A Watermark detector
01/01/2003CN1097903C Licensee notification system
01/01/2003CN1097902C Postage metering system and postage meter testing method
01/01/2003CN1097788C Software reproduction apparatus
01/01/2003CN1097787C Software delivery system, central eqipment, relay unit and user terminal equipment
01/01/2003CN1097772C Method and apparatus for protecting applied program data in safety storage zone
12/2002
12/31/2002US6501767 Mobile IP communication scheme for supporting mobile computer move over different address spaces
12/27/2002WO2002103536A1 Security system for securing exchange and execution of digital data
12/27/2002WO2002103530A1 Data transfer system, data transfer apparatus, data recording apparatus, data transfer method
12/27/2002WO2002103529A1 Data transfer system, data transfer apparatus, data recording apparatus, data management method, identifier generation method
12/27/2002WO2002058357A3 Pre-authentication of users using one-time passwords
12/27/2002WO2002049266A3 Method and device for detecting a key pair and for generating rsa keys
12/26/2002US20020199099 Information recording device, information playback device, information recording medium, information recording method, information playback method, and program providing medium
12/26/2002US20020199097 Information providing method, information providing system and program
12/26/2002US20020196764 Method and system for authentication in wireless LAN system
12/25/2002CN1387713A 编码装置 Encoding device
12/19/2002WO2002102018A1 Method for authentication between a portable telecommunication object and a public access terminal
12/19/2002WO2002101605A2 System and method for compressing secure e-mail for exchange with a mobile data communication device
12/19/2002US20020194477 Device authentication apparatus and method, and recorded medium on which device authentication program is recorded
12/19/2002US20020194130 Network system, data distribution method and recording medium on which distribution use data is recorded and which can be read by computer
12/19/2002US20020194121 Personal electronic settling system and a terminal and control apparatus therefor
12/19/2002DE10127195A1 Processor with internal memory configuration allowing register memory to store as many as possible operands with remainder of memory capacity used for storing other data
12/18/2002EP1267548A2 Method and system for integrating security mechanisms into session initiation protocol request messages for client-proxy authentication
12/18/2002EP1267515A2 Method and apparatus for symmetric encryption/decryption of recorded data
12/18/2002EP1267514A2 Encryption secured against Differential Power Analysis (DPA)
12/18/2002EP1267344A2 Data transfer system, data transfer apparatus, data recording apparatus, edit controlling method, and data processing method
12/18/2002CN1385823A Ticket and security ciphering and identifying method based on identified fibre random distribution
12/18/2002CN1385822A Anti-counterfeit number and making method thereof
12/18/2002CN1385821A Tax-control anti-counterfeit electronic receipt machine
12/17/2002US6496929 Generating RSA moduli including a predetermined portion
12/17/2002US6496928 System for transmitting subscription information and content to a mobile device
12/17/2002US6496591 Video copy-control with plural embedded signals
12/12/2002WO2002100036A1 Intelligent secure data manipulation apparatus and method
12/12/2002WO2002099630A1 Processor comprising an internal memory configuration
12/12/2002WO2002076084A3 Adding electronic signature to a report associated with an image file
12/12/2002WO2002059724A9 Apparatus, method and system for tracking information access
12/12/2002WO2002052778A3 Conditional access system
12/12/2002US20020186842 System, method, and device for playing back recorded audio, video or other content from non-volatile memory cards, compact disks, or other media
12/12/2002US20020186841 Apparatus & method for performing KASUMI ciphering
12/12/2002US20020186693 Mobile IP communication scheme for supporting mobile computer move over different address spaces
12/11/2002EP1265396A1 Apparatus and method for recording/reproducing information
12/11/2002CN2525616Y On-line paying cipher device
12/11/2002CN1384933A Method for multiplying divisor classes with scalar
12/10/2002US6493746 Multi-operator network management system and method using transaction processing
12/10/2002CA2165102C Method for identifying a metering accounting vault to digital printer
12/05/2002WO2002098156A1 A method for enabling a subscriber entity to actively communicate in a communication network
12/05/2002WO2002098052A2 Apparatus and method for performing kasumi ciphering
12/05/2002WO2002098042A2 Method and apparatus for establishing usage rights for digital content to be created in the future
12/05/2002WO2002006951A3 Computer software installation
12/05/2002US20020184527 Intelligent secure data manipulation apparatus and method
12/05/2002US20020184499 Information processing apparatus, information processing method, and storage medium
12/05/2002US20020184259 Data reproducing/recording apparatus/ method and list updating method
12/05/2002US20020184158 Method and apparatus for establishing usage rights for digital content to be created in the future
12/05/2002US20020183985 Device for reproducing data
12/05/2002US20020181704 Data encryption circuit pre-holding next data to be operated in buffer
12/05/2002US20020181702 Certified shuffle-decrypting system, certified shuffle-decrypting method and certified shuffle-decryption verifying method
12/05/2002US20020181701 Method for cryptographing information
12/05/2002US20020180583 Authentication of subscriber station
12/04/2002EP1262037A1 Portable data carrier provided with access protection by dividing up codes
12/04/2002EP1261903A2 Method of authenticating users of software
12/04/2002EP0671090B1 Method and apparatus for improved security within encrypted communication devices
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