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)
12/2002
12/04/2002CN1383697A 移动通信系统 The mobile communication system
12/04/2002CN1383648A Substitution-box for symmetric-key ciphers
12/04/2002CN1383643A Information recording/reproducing appts. and method
12/03/2002US6490687 Login permission with improved security
12/03/2002US6490513 Automobile data archive system having securely authenticated instrumentation data storage
12/03/2002US6490356 Broadcast receiving system comprising a computer and a decoder
11/2002
11/28/2002WO2002096150A1 Local authentication in a communication system
11/28/2002WO2002095543A2 Apparatus and method for providing secure network communication
11/28/2002WO2001061961A3 Method for securing the authenticity of hardware and software in a network
11/28/2002US20020178410 Generating and matching hashes of multimedia content
11/28/2002US20020178372 Data copyright management system
11/28/2002US20020178371 Attack-resistant implementation method
11/28/2002US20020178359 Just-in-time authentication of users of a digital home network
11/28/2002US20020176601 Audio with hidden in-band digital data
11/28/2002US20020176582 Technique for obtaining a single sign-on certificate from a foreign PKI system using an existing strong authentication PKI system
11/28/2002US20020176575 System, method, and device for playing back recorded audio, video or other content from non-volatile memory cards, compact disks or other media
11/28/2002CA2437548A1 Apparatus and method for providing secure network communication
11/27/2002EP1260946A2 Electronic transaction processing system
11/27/2002EP1260945A1 Semiconductor integrated circuit on IC card protected against tampering
11/27/2002EP1260052A2 Cryptographic communication process and apparatus
11/27/2002EP1000509B1 Encryption device for use in a conditional access system
11/27/2002EP0974230B1 Method of downloading of data to an mpeg receiver/decoder
11/27/2002EP0968609B1 Signal generation and broadcasting
11/27/2002CN1382357A Authentication of subscriber station
11/27/2002CN1382273A Randon number generation for encrypting cellular communications
11/27/2002CN1381803A Data processing method for application with photo and its system
11/27/2002CN1095150C Value transfer system
11/26/2002US6487659 Device and method for conditional authentication
11/21/2002WO2002093396A2 Business data processing apparatus using network
11/21/2002WO2002093370A1 Method and system for conditional installation and execution of services in a secure computing environment
11/21/2002WO2002073876A3 Cryptographic authentication with ephemeral modules
11/21/2002US20020174352 Data security system for a database
11/21/2002US20020174338 Digital signature verification apparatus
11/21/2002US20020172116 Distribution of content
11/20/2002EP1259024A2 Certified shuffle-decrypting system, certified shuffle-decrypting method and certified shuffle-decryption verifying method
11/20/2002EP1258801A1 Device authentication apparatus and method, and recorded medium on which device authentication program is recorded
11/20/2002EP1257892A1 Controlling access to a resource by a program using a digital signature
11/20/2002EP1010320B1 Broadcast receiving system comprising a computer and a decoder
11/20/2002CN2521688Y Antifake sign
11/20/2002CN2521669Y Cipher bar code combination properties management antifake marker
11/20/2002CN2521667Y cipher antifake enquiry apparatus for residence card of PRC driving license, passport and academic certificate
11/20/2002CN1381011A Storage area dividing method for portable device
11/20/2002CN1380633A Commodity antifalse method by using mobile telephone short message and computer random coding process
11/19/2002US6483918 Technique for producing a parameter, such as a checksum, through a primitive that uses elementary register operations
11/19/2002CA2280775C Cyclotomic polynomial construction of discrete logarithm cryptosystems over finite fields
11/14/2002WO2002091332A2 Computation of a multiple of a group element for cryptographic purposes
11/14/2002WO2002091167A1 Random number generator
11/14/2002WO2002052832A3 Method for flexible charging of fees for services and resources in networks
11/14/2002WO2002047356A3 Method of secure transmission of digital data from a source to a receiver
11/14/2002US20020169972 Information storage medium, information processing system, content distribution server, methods and programs therefor, and storage medium for such programs
11/14/2002US20020169971 Data authentication system
11/14/2002US20020169968 Microprocessor configuration with encryption
11/14/2002US20020168068 Method of and system for encrypting digital data, method of and apparatus for reproducing digital data, and computer product
11/13/2002EP1257084A1 Message authentication system and method
11/13/2002EP1257083A2 A digital signature verification apparatus
11/13/2002EP1256950A1 Recording apparatus, reproducing apparatus, data processing apparatus, recording/reproducing apparatus, and data transmitting apparatus
11/13/2002CN1379376A Cipher system-oriented 32-bit CPU
11/13/2002CN1379375A Full-hardware intelligent RSA encrypt/decrypt processor
11/12/2002US6480963 Network system for transporting security-protected data
11/12/2002US6480957 Method and system for secure lightweight transactions in wireless data networks
11/12/2002US6480869 Random-number generating circuit, non-contact IC card having random-number generating circuit, reader/writer, and method of testing an apparatus having the random generating circuit
11/12/2002US6480606 Elliptic curve encryption method and system
11/07/2002WO2002089398A1 Communication apparatus
11/07/2002WO2002089048A1 Data processing system, memory device, data processor, data processing method, and program
11/07/2002WO2002088934A1 Method for encrypting a calculation using a modular function
11/07/2002WO2002073394A3 Method and device for modular multiplication
11/07/2002WO2002069087A3 System and method for message encryption and signing in a transaction processing system
11/07/2002US20020166058 Semiconductor integrated circuit on IC card protected against tampering
11/07/2002US20020166057 Temper-resistant processing method
11/07/2002US20020166054 Contents distribution system
11/07/2002US20020164050 Audio appliance and monitoring device responsive to watermark data
11/07/2002US20020164019 Cryptographic accelerator
11/06/2002EP1255394A2 Just-in-time user authentication in a digital home network
11/06/2002EP1255179A2 Methods and arrangements for controlling access to resources based on authentication method
11/06/2002EP1254548A1 Method and device for securing data for sending over an open network
11/06/2002EP1254408A2 Modular exponential algorithm in an electronic component using a public key encryption algorithm
11/06/2002EP1254405A2 Method for producing and checking forge-proof documents
11/06/2002EP1141820B1 A method for accelerating cryptographic operations on elliptic curves
11/06/2002EP1135887A4 Message identification with confidentiality, integrity, and source authentication
11/06/2002EP1080400B1 Method and device for processing data
11/06/2002EP0968610B1 Transmission and reception of television programmes and other data
11/06/2002CN1378187A Anti-fake method with random grains
11/05/2002US6477530 Digital data recording and reproducing system
10/2002
10/31/2002WO2002087143A1 Method and system for identifying a replay attack by an access device to a computer system
10/31/2002WO2002086847A1 Data securing communication apparatus and method
10/31/2002WO2002086846A1 Enciphering / deciphering device, enciphering / deciphering method, data enciphering method, and ic card
10/31/2002WO2002086845A1 Content monitoring method, content providing device, and content monitoring device
10/31/2002WO2002086826A1 Financial information input method using symmetrical key security algorithm and commercial transaction system for mobile communications
10/31/2002WO2002086659A2 Super distribution of music
10/31/2002US20020162030 Methods and arrangements for controlling access to resources based on authentication method
10/31/2002US20020162026 Apparatus and method for providing secure network communication
10/31/2002US20020159599 Block encryption device using auxiliary conversion
10/31/2002US20020159481 Telegraphic message transmitter and telegraphic message receiver
10/31/2002DE10120364A1 Just-in-time authentication of domestic digital network users involves user authentication on first access to protected object with validity period dependent on access period, system use context
10/30/2002EP1253740A1 Content data transmitting device and method, and recording/reproducing device
10/30/2002EP1253503A2 Protection of software against use without permit
10/30/2002EP1252739A1 Method for checking the integrity of data, system and mobile terminal
10/30/2002EP1252561A2 Microprocessor resistant to power analysis
10/29/2002US6473508 Auto-recoverable auto-certifiable cryptosystems with unescrowed signature-only keys
10/29/2002US6471068 Method and apparatus for accessing an object, and storage medium storing a program for controlling access to an object
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