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
10/01/2003EP1349045A2 System for controlling the distribution and use of digital works using digital tickets
10/01/2003EP1349044A2 System for controlling the distribution and use of digital works using digital tickets
10/01/2003EP1349043A2 System for controlling the distribution and use of digital works having a fee reporting mechanism
10/01/2003EP1349042A2 System for controlling the distribution and use of digital works using digital tickets
10/01/2003EP1349041A2 System for controlling the distribution and use of digital works using digital tickets
10/01/2003EP1349040A2 System for controlling the distribution and use of digital works using digital tickets
10/01/2003EP1349039A2 System for controlling the distribution and use of digital works using digital tickets
10/01/2003EP1349038A2 System for controlling the distribution and use of digital works having a fee reporting mechanism
10/01/2003EP1349033A1 A method of protecting the integrity of a computer program
10/01/2003EP1348291A2 Method of secure transmission of digital data from a source to a receiver
10/01/2003EP1348274A2 Local authentication in a communication system
10/01/2003EP1348152A2 Method and apparatus for managing secure collaborative transactions
10/01/2003CN1446418A Securing arbitrary communication services
10/01/2003CN1446015A Systme for preventing altering electronic memory
10/01/2003CN1445693A Safety digital data form and code forced implement policy
10/01/2003CN1123226C Copy prevention method and apparatus for digital video system
10/01/2003CN1123163C Method and apparatus for sending electronic data signals
10/01/2003CN1123159C Method and apparatus for encryption radio traffic in telecommunications network
09/2003
09/25/2003WO2003079628A1 Certificate information storage system and method
09/25/2003WO2003036886A3 Method and system for transferring ip packets by aggregating multiple wireless communication channels for high data rate transfers
09/25/2003WO2002052765A3 Security communication packet processing apparatus and the method thereof
09/25/2003US20030182579 Transmitting and processing protected content
09/25/2003US20030182574 Secure digital data format and code enforced policy
09/25/2003US20030182566 Data storage apparatus
09/25/2003US20030182554 Authenticated ID-based cryptosystem with no key escrow
09/25/2003US20030182552 Method of managing digital signature, apparatus for processing digital signature, and a computer readable medium for recording program of managing digital signature
09/25/2003US20030182340 Residue computing device
09/24/2003EP1347595A1 Data encryption/decryption device
09/24/2003EP1347354A2 System for controlling the distribution and use of digital works having a fee reporting mechanism
09/24/2003EP1346755A2 Secure digital data format and code enforced policy
09/24/2003EP1346573A2 Conditional access system
09/24/2003EP1346548A2 Secure session management and authentication for web sites
09/24/2003EP1346540A2 Providing secure network access for short-range wireless computing devices
09/24/2003EP1346509A2 Method and device for detecting a key pair and for generating rsa keys
09/24/2003CN1444190A Anti-password attack cypher verification technology
09/24/2003CN1444172A 终端设备和终端系统 Terminal equipment and terminal system
09/24/2003CN1122240C Variable state code antifake method and state code recording carrier
09/24/2003CN1122230C Distributed service network and data processing insertion requirement method
09/24/2003CN1122213C Method and apparatus for signing and sealing objects
09/18/2003WO2002063592A3 Data encryption system using key matrix
09/18/2003WO2002039331A8 An information management system
09/18/2003WO2002029577A3 Method and apparatus for automatic database encryption
09/18/2003US20030177361 Method and system for using electronic communications for an electronic contract
09/18/2003US20030174835 Data encryption device, data decryption device, and data encryption/decryption device
09/17/2003EP1345435A2 Secure video card methods and systems
09/17/2003EP1344389A2 Method for flexible charging of fees for services and resources in networks
09/17/2003EP1344117A2 Method for signing documents using a pc and a personal terminal device
09/17/2003EP1161726B1 Method and apparatus for minimizing differential power attacks on processors
09/17/2003EP1110140B1 Computing method for elliptic curve cryptography
09/17/2003CN2574150Y Voice magnetic code discriminator
09/17/2003CN1443008A Information package program component detecting method
09/16/2003US6622248 File data retrieving device and recording medium containing computer program for controlling the same
09/12/2003WO2003075507A1 Code generator and device for synchronous or asynchronous and permanent identification or encoding and decoding of data of any particular length
09/12/2003WO2002044875A3 Programmable logic device with method of preventing readback
09/11/2003US20030172340 Coding-decoding device and coding-decoding method
09/11/2003US20030169456 Tampering judgement system, encrypting system for judgement of tampering and tampering judgement method
09/11/2003US20030169189 Robust system for transmitting and receiving map data
09/10/2003EP1343321A1 Methods and systems for cryptographically protecting secure content in video memory
09/10/2003EP1343270A1 Authentication method, communication apparatus, and relay apparatus
09/10/2003EP1343073A2 Random number data generator
09/10/2003EP1342153A1 Method and device for generating a pseudo random sequence using a discrete logarithm
09/10/2003EP1166238B1 Method and system for ordering, loading and using access tickets
09/10/2003CN1441935A System and method for reproduction and authentication of original documents
09/10/2003CN1441590A Hard disc module
09/10/2003CN1121019C Method of verifying integrity of data stored on processing facility used for processing sheet-like articles
09/09/2003US6616458 Method and apparatus for administering a survey
09/04/2003WO2003073761A1 Method for processing encoded data for a first domain received in a network pertaining to a second domain
09/04/2003WO2003073399A1 Method and system for verifying data originality
09/04/2003WO2003073245A2 Multi-token seal and unseal
09/04/2003WO2003038578A3 User access control to distributed resources on a data communications network
09/04/2003US20030167394 Data securing communication apparatus and method
09/04/2003US20030167236 Method and apparatus for repackaging portions of digital works as new digital works
09/03/2003EP1341367A2 Encryption of image data stored in a digital copier
09/03/2003EP1341079A2 Random number generating device
09/03/2003EP1340380A1 Counterfeit stb prevention through protocol switching
09/03/2003EP1340355A1 Data network-based system
09/03/2003EP1340337A2 Location-independent packet routing and secure access in a short-range wireless networking environment
09/03/2003EP1282860A4 Secure dynamic link allocation system for mobile data communication
09/03/2003EP1105998B1 Method and device for creating a secret communication key for a predetermined asymmetric and cryptographic key-pair
09/03/2003CN1440545A Method and system for limiting possibility of transforming data designed to constitute, in particular pre-payment tokens
09/03/2003CN1440535A Electronic trading server, seller client, buyer client, and electronic trading method
09/02/2003US6615354 Information processing equipment
09/02/2003US6615353 User authentication method and user authentication system
09/02/2003US6615352 Device and method for authenticating user's access rights to resources
09/02/2003US6615349 System and method for manipulating a computer file and/or program
08/2003
08/28/2003WO2003071808A2 Flexible storage of media information
08/28/2003WO2003071770A1 System and method for acoustic two factor authentication
08/28/2003WO2003071416A2 On-line randomness test through overlapping word counts
08/28/2003WO2003071415A2 Randomness test utilizing auto-correlation
08/28/2003WO2003071414A2 On-line randomness test for detecting irregular pattern
08/28/2003WO2003021401A3 A texturing system
08/28/2003WO2002047272A3 A method of performing mathematical operations in an electronic device, a method of generating pseudo-random numbers in an electronic device, and a method of encrypting and decrypting electronic data
08/28/2003US20030163760 Information processing method
08/28/2003US20030163715 Encryption for a stream file in an FPGA integrated circuit
08/28/2003US20030163711 Multi-token seal and unseal
08/28/2003US20030163699 Cryptography method and smart cards microcircuit
08/28/2003US20030162587 Random number generating device
08/28/2003US20030161064 Hard disk unit ensuring stability of classified data
08/28/2003CA2476485A1 System and method for acoustic two factor authentication
08/27/2003EP1339028A2 Device and method for authentication
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