Patents
Sitemap › G09 - Educating; Cryptography; Display; Advertising; Seals › G09C - Ciphering or deciphering apparatus for cryptographic or other purposes involving the need for secrecy › 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
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)
08/2005
08/23/2005US6934693 System for controlling the distribution and use of digital works
08/18/2005WO2005076140A1 Recording/reproduction device and content protection system
08/18/2005US20050182951 Method of securely erasing data and hard disk drive using the same
08/18/2005US20050182944 Computer security system and method
08/18/2005US20050182931 Conditional access to digital rights management conversion
08/18/2005US20050182812 Aes mixcolumn transform
08/18/2005US20050180573 Access control for digital content
08/17/2005EP1564927A1 Random number generation device
08/17/2005EP1564641A1 Recording system and method, recording device and method, input device and method, reproduction system and method, reproduction device and method, recording medium, and program
08/17/2005EP1564625A1 Computer security system and method
08/17/2005EP1564622A2 Conditional access to digital rights management conversion
08/17/2005EP1327321A4 Cryptographic data security system and method
08/17/2005EP1105996A4 System and method for enabling secure access to services in a computer network
08/17/2005CN1656773A Method for authenticating a user to a service of a service provider
08/17/2005CN1656772A Association of security parameters for a collection of related streaming protocols
08/17/2005CN1655506A Authentication apparatus and method for home network devices
08/17/2005CN1655133A Method and system of external data storage
08/16/2005US6931482 Semiconductor memory device internally provided with logic circuit which can be readily controlled and controlling method thereof
08/16/2005US6931379 IC card system and IC card
08/16/2005US6931127 Encryption device using data encryption standard algorithm
08/16/2005CA2318445C Electronic bookshelf with multi-user features
08/12/2005CA2495759A1 Method and system of external data storage
08/11/2005WO2005074187A1 Information processing device and method
08/11/2005US20050177742 Method and system for managing a data object so as to comply with predetermined conditions for usage
08/11/2005US20050177514 Prepaid pay television system
08/11/2005US20050176489 Data processing system for the organisation of lotteries
08/10/2005EP1562319A1 Methods and equipment for encrypting/decrypting, and identification systems
08/10/2005EP1326470B1 Method and device for authenticating a subscriber in a communications network
08/10/2005EP1186193B1 Method and system for verifying the authenticity of a first communication participant in a communications network
08/10/2005EP1105791A4 Method and apparatus for effecting secure document format conversion
08/10/2005EP1048141B1 Method for generating asymmetrical cryptographic keys by the user
08/10/2005CN1653806A High-resolution image projection
08/10/2005CN1653458A System and method for verifying delivery and integrity of electronic message
08/10/2005CN1652163A Apparatus and method for performing transparent output feedback mode cryptographic functions
08/10/2005CN1652057A Apparatus and method for program tamper detection , and program
08/10/2005CN1214568C Techniques for authenticating user to server using SIP (session initiation protocol) messages
08/09/2005US6928419 Method and apparatus for repackaging portions of digital works as new digital works
08/09/2005US6928167 Method for managing public key
08/09/2005US6928164 Data processing device with data processing means utilizing a characteristics value and with means for counteracting analysis methods for the detection of the characteristic value
08/04/2005WO2005071880A1 Group signature system, method, device, and program
08/04/2005WO2005071640A1 Method and device for calculating a function from a plenty of inputs
08/04/2005US20050172333 Method and apparatus for handling authentication on IPv6 network
08/04/2005US20050172140 Encryption device, encryption system including the encryption device, decryption device and a semiconductor system including the decryption device
08/04/2005US20050172130 Watermarking a digital object with a digital signature
08/04/2005US20050171715 Data use limit setting method, data use limit setting apparatus, data use limit setting program, and recording medium containing the program
08/04/2005US20050169471 Method for cryptographic conversion of binary data blocks
08/04/2005US20050169463 Hardware cryptographic engine and hardware cryptographic method using an efficient S-BOX implementation
08/04/2005US20050169461 Method and device for anonymous signature with a shared private key
08/04/2005US20050169144 Recording medium processing device and recording medium processing method
08/04/2005DE10361795A1 Storage unit for secret codes, e.g. for bank/credit cards and the like, has a table of random single numerals/letters and a template with structured windows to read off selected combinations
08/04/2005CA2554368A1 Group signature system, method, device, and program
08/03/2005EP1560396A2 Method and apparatus for handling authentication on IPv6 network
08/03/2005EP1560214A2 Recording medium processing device and recording medium processing method
08/03/2005EP1560120A1 Access method
08/03/2005EP1560110A1 Multiple-word multiplication-accumulation circuit and Montgomery modular multiplication-accumulation circuit
08/03/2005CN1650603A System and method for acoustic two factor authentication
08/03/2005CN1650335A Device for automatic reading of a plurality of codes by means of a single key code
08/03/2005CN1650268A Methods and systems for cryptographically protecting secure content
08/03/2005CN1650246A Efficient browser-based identity management providing personal control and anonymity
08/03/2005CN1649294A Method and apparatus for handling authentication on IPV6 network
08/03/2005CN1648881A Encryption device, encryption system, decryption device and a semiconductor system
08/03/2005CN1648853A Multiple-word multiplication-accumulation circuit and montgomery modular multiplication-accumulation circuit
08/03/2005CN1213380C System for electronized data administration and its method
08/02/2005US6925567 Remote control of VCR with electronic mail
08/02/2005US6925448 Usage rights grammar and digital works having usage rights created with the grammar
08/02/2005US6924753 Robust system for transmitting and receiving map data
07/2005
07/28/2005WO2005069295A1 Authentication server, method and system for detecting unauthorized terminal
07/28/2005WO2005036814A8 Image data verification
07/28/2005US20050166057 Digital measurement apparatus and image measurement apparatus
07/28/2005US20050166055 Information, transformation and reverse transformation processing
07/28/2005US20050166044 Digital measurement apparatus and image measurement apparatus
07/28/2005US20050166042 Secure video card methods and systems
07/28/2005US20050165923 Transmitter device and relay device for performing data transmission control
07/28/2005US20050165876 Multiple-word multiplication-accumulation circuit and Montgomery modular multiplication-accumulation circuit
07/28/2005US20050165875 Arithmetic device
07/28/2005US20050165698 User authentication method and system using user's e-mail address and hardware information
07/28/2005US20050165687 Repository with security class and method for use thereof
07/27/2005EP1557971A1 Methods and equipment for encrypting/decrypting, and identification systems
07/27/2005EP1557801A2 Award payment system
07/27/2005EP1557737A2 Method, system and program procuct for electronically executing contracts within a secure computer infrastructure
07/27/2005EP0981804B1 Electronic transaction and smart card for a electronic transaction
07/27/2005CN1647502A Prepaid pay television system
07/27/2005CN1647443A Initializing, maintaining, updating and recovering secure operation within an integrated system employing a data access control function
07/27/2005CN1647187A Apparatus and method for rendering user data
07/27/2005CN1647139A Data conversion device and data conversion method
07/27/2005CN1647027A Hadamard-transform on-line randomness test
07/27/2005CN1645807A Method, system and program product for electronically executing contracts within a secure computer infrastructure
07/27/2005CN1645387A Award money payment system, award ticket issuing device and award ticket accounting device
07/27/2005CN1212744C Method for determining terminal beginning preparation
07/27/2005CN1212719C Method and appts. for granting use of session of packet data transmission standard designated by identifier
07/21/2005WO2005067198A1 Information processing device
07/21/2005WO2005066803A1 Data communicating apparatus and method for managing memory of data communicating apparatus
07/21/2005US20050160285 Secure video card methods and systems
07/21/2005US20050160283 Transmitting/receiving apparatus and a transmitting/receiving method
07/21/2005US20050160282 Transmitting/receiving apparatus and a transmitting/receiving method
07/21/2005US20050160278 Method, system and program product for electronically executing contracts within a secure computer infrastructure
07/21/2005US20050160274 Content transmission apparatus and content reception apparatus
07/21/2005US20050160265 Content transmission apparatus, content reception apparatus and content transmission method
07/21/2005US20050160048 Method and apparatus for tracking states of digital works
07/21/2005US20050160047 Music content using apparatus
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