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)
10/2003
10/30/2003WO2003090259A2 Authentication of integrated circuits
10/30/2003WO2003090187A1 Arithmetic device and encryption/decryption device
10/30/2003WO2003090186A1 Calculation device and calculation method
10/30/2003WO2003090185A1 Key generation device, encoding/decoding device, and key generation method
10/30/2003WO2003090027A2 Mobile account authentication service
10/30/2003WO2002079906A3 Content security layer providing long-term renewable security
10/30/2003WO2001016821A3 Distribution system, semiconductor memory card, receiving apparatus, computer-readable recording medium and receiving method
10/30/2003US20030204743 Authentication of integrated circuits
10/30/2003US20030204734 Methods for authenticating potential members invited to join a group
10/30/2003US20030204731 Method and apparatus to enhance the security of data
10/30/2003US20030204730 Secure transmission and installation of an application
10/30/2003US20030202680 Information processing method and apparatus, and computer program and computer -readable storage medium
10/30/2003CA2482635A1 Authentication of integrated circuits
10/30/2003CA2482558A1 Mobile account authentication service
10/29/2003EP1357525A2 IC card, portable terminal, and access control method
10/29/2003EP1356389A1 System and method for trusted self-billing and payment for utilities including audit, verification, reconciliation and dispute resolution
10/29/2003CN1452824A Method and system for secure transmission of data
10/29/2003CN1452116A Device and method for making and identifying file capable of verifying forging or changing thereof
10/29/2003CN1126398C Device and method for preventing electronic memory from being tampered
10/29/2003CN1126014C Portable electronic book and system for allocation of text information
10/28/2003US6640304 Systems and methods for secure transaction management and electronic rights protection
10/23/2003WO2003088557A1 Digital two-way communication control device and its method
10/23/2003WO2003088056A1 Information processing device, method, and program
10/23/2003WO2003088034A1 Hadamard-transform on-line randomness test
10/23/2003WO2003042225A3 Secure handling of stored-value data objects
10/23/2003WO2002067097A3 Authentication method and data transmission system
10/23/2003US20030200454 Initializing, maintaining, updating and recovering secure operation within an integrated system employing a data access control function
10/23/2003US20030200450 Saving and retrieving data based on public key encryption
10/23/2003US20030200435 Methods and systems for authenticationof components in a graphics system
10/23/2003US20030200246 Modular multiplication method and calculating device
10/23/2003US20030200240 Random number generating apparatus, random number generating method, program for generating random numbers, audio decoder and audio decoding method
10/23/2003US20030200238 Hadamard-transform on-line randomness test
10/23/2003US20030200184 Mobile account authentication service
10/23/2003US20030200177 Method and system for authenticating user and providing service
10/23/2003US20030198343 Combinational circuit, encryption circuit, method for constructing the same and program
10/23/2003US20030198342 System and method for implementing a hash algorithm
10/22/2003EP1355309A1 Recording medium, information processing device, content distribution server, method, program, and its recording medium
10/22/2003EP1355219A2 System for controlling the distribution and use of digital works having a fee reporting mechanism
10/22/2003EP1355218A2 Methods and systems for authentication of components in a graphic system
10/22/2003EP1354264A2 Random number generator and method for generating a random number
10/22/2003EP1072124B1 Method for verifying the use of public keys generated by an on-board system
10/22/2003CN1451213A Systems and methods for authenticating an electronic message
10/22/2003CN1125550C Communication system and communication method
10/21/2003US6636975 Accessing a secure resource using certificates bound with authentication information
10/18/2003CA2425478A1 Methods and systems for authentication of components in a graphics system
10/16/2003WO2003085959A1 Prepaid pay television system
10/16/2003WO2003085518A2 Configurable arithmetic unit
10/16/2003WO2003085479A2 Apparatus and method for rendering user data
10/16/2003WO2002056155A3 Security system for preventing a personal computer from being used by unauthorized people
10/16/2003WO2002037242A3 Method and system for processing a request of a customer
10/16/2003US20030196101 Data transfer system, data transfer apparatus, data recording apparatus, and data transfer method
10/16/2003US20030196090 Digital signature system
10/16/2003US20030195858 Distributed information storage, authentication and authorization system
10/15/2003EP1353501A1 Pre-pay television system
10/15/2003EP1352502A2 Pre-authentication of users using one-time passwords
10/15/2003EP1352306A2 Trusted device
10/15/2003EP1254408B1 Modular exponential algorithm in an electronic component using a public key encryption algorithm
10/15/2003EP0990226B1 System for secured reading and processing of data on intelligent data carriers
10/15/2003CN1449613A A modulation technique providing high data rate through band limited channels
10/15/2003CN1449609A Method for generating an electronic key from a prime number contained in a specific interval and device therefor
10/15/2003CN1449527A 共享名 Share Name
10/15/2003CN1449519A Extending the range of computational fields of integers
10/15/2003CN1124719C Parameterized hash functions for access control
10/15/2003CN1124550C Permit for controlling access to services in protected memory
10/14/2003US6633723 Recording and reproducing system, recording apparatus and reproducing apparatus having copy protection function
10/14/2003US6633644 Conditional access system for controlling the access to a data content
10/09/2003WO2003084257A1 Method and system for re-authentication in ip multimedia core network system (ims)
10/09/2003WO2003083806A1 Encryptor/decryptor and encrypting/decrypting device using the same
10/09/2003WO2002033887A3 Multiple authentication sessions for content protection
10/09/2003US20030191956 Utilizing a key for enciphering and deciphering that is modified during enciphering and deciphering
10/09/2003US20030191721 System and method of associating communication devices to secure a commercial transaction over a network
10/09/2003US20030190043 Protection of software against use without permit
10/08/2003EP1351466A2 A method of exchanging secured data through a network
10/08/2003EP1351431A1 Method and apparatus for managing and processing digital signatures
10/08/2003EP1351246A2 System and method for copy protection for digital signals
10/08/2003EP1351245A2 System and method for copy protection for digital signals
10/08/2003EP1351244A2 System and method for copy protection for digital signals
10/08/2003EP1350171A1 Spontaneous virtual private network between portable device and enterprise network
10/08/2003CN1448016A Method and appts. for granting use of session of packet data transmission standard designated by indentifier
10/08/2003CN1447956A Monetary system having public key infrastructure
10/07/2003US6631471 Information processing equipment
10/02/2003WO2003081896A1 Watermaking a digital object with a digital signature
10/02/2003WO2003081549A2 Secure handling of stored-value data objects
10/02/2003WO2003081420A1 Functional gap average on-line randomness test
10/02/2003WO2003081419A1 Monobit-run frequency on-line randomness test
10/02/2003WO2003081418A1 Gap average on-line randomness test
10/02/2003WO2003081397A2 A method of protecting the integrity of a computer program
10/02/2003WO2003028281A3 A cryptosystem for data security
10/02/2003WO2003010916A3 Method and apparatus for encrypting content
10/02/2003US20030188174 Method of protecting the integrity of a computer program
10/02/2003US20030188167 Group signature apparatus and method
10/02/2003US20030188117 Data access management system and management method using access control tickert
10/02/2003US20030188000 Method of exchanging secured data through a network
10/02/2003US20030187890 Gap average on-line randomness test
10/02/2003US20030187889 Functional gap average on-line randomness test
10/02/2003US20030187598 Monobit-run frequency on-line randomness test
10/02/2003US20030186681 Method and system for re-authentication in IP multimedia core network system (IMS)
10/02/2003US20030185390 Method and apparatus for encrypting data in a wireless communication system
10/01/2003EP1349343A1 Communication devices with limited copyright protection range
10/01/2003EP1349123A2 Secure identity and privilege system
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