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)
08/2003
08/27/2003EP1338963A2 Packing a source file, a compiler and profile data, transferring and expanding the package, and compiling the source file
08/27/2003EP1338955A2 Method for detecting errors in cryptographic calculations
08/27/2003EP1338942A1 System for controlling the distribution and use of digital works
08/27/2003EP1338941A1 System for controlling the distribution and use of digital works
08/27/2003EP1338164A1 A system for ensuring encrypted communication after handover
08/27/2003EP1338132A2 Secure file transfer method and system
08/27/2003EP1338115A1 A communication system with ciphering key generation
08/27/2003EP1337982A1 Authenticating method and device
08/27/2003CN1439136A System and method for managing trust between clients and servers
08/27/2003CN1119771C Method and device for loading input dato into algorithm during authentication
08/26/2003US6611812 Secure electronic content distribution on CDS and DVDs
08/26/2003US6611534 Stream data processing system and stream data limiting method
08/21/2003WO2003069910A1 Method for controlling the billing of a broadcast service by units of time
08/21/2003WO2003069613A1 Method and device for supplying of a data set stored in a database
08/21/2003WO2003069462A2 System and method for calculating a result from a division
08/21/2003WO2003069448A2 A coercion-free voting scheme
08/21/2003WO2003036902A3 Method and apparatus for a packet classifier using a two-step hash matching process
08/21/2003WO2002035764A3 Process and apparatus for improving the security of digital signatures
08/21/2003WO2002017048A3 Trusted device
08/21/2003US20030159054 Reconfigurable secure input device
08/21/2003US20030159050 System and method for acoustic two factor authentication
08/21/2003US20030159045 Original creating apparatus and originality guaranteeing apparatus
08/21/2003US20030159039 Method of protecting an electronic chip against fraud
08/21/2003US20030159037 Apparatus and method for recording/reproducing information
08/21/2003US20030158876 On-line randomness test through overlapping word counts
08/21/2003US20030158875 Randomness test utilizing auto-correlation
08/21/2003US20030158814 Invoicing management method of a service transmitted per time unit
08/21/2003US20030156720 Scrambler with scramble process bypass capability and descrambler with descramble process bypass capability
08/21/2003US20030156716 Copyright protection system, digital information processing apparatus and copyright protection method
08/21/2003US20030156714 Elliptic curve scalar multiplication method and device, and storage medium
08/21/2003US20030156713 On-line randomness test for detecting irregular pattern
08/20/2003EP1336961A1 Method and device for supplying of a data set stored in a database
08/20/2003EP1336913A2 Original creating apparatus and originality guaranteeing apparatus
08/20/2003EP1336310A2 Methods and apparatus for identifying asset location in mobile communication networks
08/20/2003EP1336277A2 Methods and apparatus for identifying asset location in mobile communication networks
08/20/2003EP1297652A4 Improving des hardware throughput for short operations
08/20/2003CN1437749A Recording apparatus, reproducing apparatus, data processing apparatus, recording/reproducing apparatus, and data transmitting apparatus
08/20/2003CN1437350A Method and equipment for safety Internetwork protocol communication in call processing system
08/19/2003US6609200 Method and system for processing electronic documents
08/14/2003WO2003067466A2 Efficient storage of fingerprints
08/14/2003WO2002011025A3 System and method for verifying delivery and integrity of electronic message
08/14/2003US20030154379 Watermark data embedding apparatus and extracting apparatus
08/14/2003US20030152222 Copyright protection system, recording device, and reproduction device
08/14/2003US20030152218 Cryptography method on elliptic curves
08/13/2003EP1335563A2 Method for securing communication over a network medium
08/13/2003EP1335365A2 Data storage apparatus and method
08/13/2003EP1335364A2 Access control method and storage apparatus
08/13/2003EP1335363A2 Valid medium management system
08/13/2003EP1335264A1 System for controlling the distribution and use of digital works utilizing a usage rights grammar
08/13/2003EP1335263A1 System for controlling the distribution and use of composite digital works
08/13/2003EP1335262A1 System for controlling the distribution and use of composite digital works
08/13/2003EP1335261A1 System for controlling the distribution and use of composite digital works
08/13/2003EP1335260A1 System for controlling the distribution and use of composite digital works
08/13/2003EP1334578A2 Wireless clock synchronization
08/13/2003EP1119942B1 Method for establishing a common cryptographic key for n subscribers
08/13/2003EP0968465B1 Television or radio control system development for mpeg
08/13/2003EP0917781A4 Simultaneous electronic transactions with visible trusted parties
08/13/2003CN1118162C Method and system for protecting information term transferred from secret unit to decoder
08/07/2003WO2003065731A1 Device that is used for secure diffusion, controlled display, private copying and management of, and conditional access to, mpeg-4-type audiovisual content rights
08/07/2003WO2003065726A1 Streaming system for distributing encrypted compressed image data and streaming method thereof
08/07/2003WO2003065365A1 Reproduction control method, program, and recording medium
08/07/2003US20030149874 Systems and methods for authenticating communications in a network medium
08/07/2003US20030149854 Memory access control system and mangement method using access control ticket
08/07/2003US20030149667 Data management apparatus, storage medium having stored therein data management program, storage medium having stored therein usage certificate data, and method of using data
08/07/2003US20030147549 Apparatus and method for producing a document verifiable for its forgery or alteration, and apparatus and method for authenticating the document
08/07/2003DE10205713C1 Vorrichtung und Verfahren zum Berechnen eines Ergebnisses aus einer Division Device and method for calculating a result of a division
08/06/2003EP1333658A2 Apparatus and method for producing a watermarked document and for authenticating the same
08/06/2003EP1333438A1 Recording device and method, reproducing device and method, and storage medium
08/06/2003EP1332621A2 Transmitting and processing protected content in a conditional access system
08/06/2003EP0983541B1 Method and apparatus for signing and sealing objects
08/06/2003CN1435026A Generation of keyed integer permutations for message authentication codes
08/06/2003CN1434388A Method for information encryption
08/06/2003CN1117463C Method and device for transmitting information data from sender to receiver via transcoder
08/06/2003CN1117362C Method and device for making watermark without clear print
08/05/2003US6604197 Secure flexible electronic submission acceptance system
08/05/2003CA2298995C Apparatus and method for generating expression data for finite field operation
08/05/2003CA2237678C Secure flexible electronic submission acceptance system
07/2003
07/31/2003WO2003027800A3 Method and apparatus for secure mobile transaction
07/31/2003US20030145218 Encryption of image data in a digital copier
07/31/2003US20030145214 Communication device and communication control device with limited copyright protection range
07/31/2003US20030145202 Authentication system, authentication apparatus, authentication target apparatus, authentication method, method of being authenticated, program and information recording medium
07/31/2003US20030145182 Data storage apparatus, data storing method, data verification apparatus, data access permission apparatus, and program and storage medium therefor
07/31/2003US20030144964 Method and device for securing data for sending over an open network
07/31/2003US20030142825 Valid medium management system
07/31/2003US20030142822 Access control method and storage apparatus
07/31/2003US20030142820 Device and method for calculation on elliptic curve
07/30/2003EP1331586A1 Content distribution system and content distribution method
07/30/2003EP1331552A2 Device and method for calculations based on elliptical curves
07/30/2003EP1331542A1 System for controlling the distribution and use of digital works
07/30/2003EP1330702A2 Method and system of using an insecure crypto-accelerator
07/30/2003EP0963635B1 Cyclotomic polynomial construction of discrete logarithm cryptosystems over finite fields
07/30/2003CN1433616A Method and apparatus for implementing leaf node proxy in network
07/30/2003CN1433607A Device for reproducing data
07/30/2003CN1433537A Security link management in dynamic networks
07/30/2003CN1432923A Video card protecting method and system
07/29/2003US6601172 Transmitting revisions with digital signatures
07/29/2003US6601046 Usage dependent ticket to protect copy-protected material
07/29/2003CA2275574C Method and system for processing electronic documents
07/29/2003CA2145904C Packet program component detector
07/24/2003WO2003061288A1 Partial encryption and pid mapping
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