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)
12/2003
12/03/2003CN1130099C Method and system for verifying authenticity of first communication participants in communications network
12/03/2003CN1129862C Terminal device and terminal system
12/03/2003CN1129850C Personal computer and personal computer add on card
12/02/2003US6658569 Secret key cryptographic process for protecting a computer system against attacks by physical analysis
12/02/2003US6658568 Trusted infrastructure support system, methods and techniques for secure electronic commerce transaction and rights management
12/02/2003CA2300645C Apparatus and method for integrating error control and authentication for satellite uplinks
12/02/2003CA2112518C Process for the authentication of at least one identification device using a verification device and implementation device
11/2003
11/27/2003WO2003098916A2 High-resolution image projection
11/27/2003WO2003098895A1 Signing and authentication devices and processes and corresponding products, notably for dvb/mpeg mhp digital streams
11/27/2003WO2003098429A2 Modular inversion that is protected against espionage
11/27/2003WO2003098409A1 Secure content sharing in digital rights management
11/27/2003WO2003098398A2 Methods and apparatus for a title transaction network
11/27/2003WO2003055135A3 Synchronizing source and destination systems via parallel hash value determinations
11/27/2003WO2003039008A3 Method and apparatus for decoding lattice codes and multilevel coset codes
11/27/2003WO2003019899A3 Local digital network, methods for installing new devices and data broadcast and reception methods in such a network
11/27/2003US20030221115 Data protection system
11/27/2003US20030221099 Association of security parameters for a collection of related streaming protocols
11/26/2003EP1365536A1 Information processing apparatus and method, and storage medium
11/26/2003EP1365308A2 Method and apparatus for minimizing differential power attacks on processors
11/26/2003EP1365306A2 Data protection system
11/26/2003EP1364509A2 Apparatus and method for security processing of communication packets
11/26/2003EP1364291A2 Apparatus, method and system for multiple resolution affecting information access
11/26/2003EP1364279A2 Generating random data
11/26/2003EP1364278A2 Apparatus, method and system for tracking information access
11/26/2003EP1364277A2 Apparatus, method and system for effecting information access in a peer environment
11/26/2003CN1459167A Apparatus and method for recording and reproducing informaation
11/25/2003US6654887 Steganography decoding methods employing error information
11/25/2003US6654480 Audio appliance and monitoring device responsive to watermark data
11/25/2003US6654404 System, apparatus, and method for outputting pseudorandom noise sequences, and data recording medium
11/20/2003WO2003096554A2 Seamless public wireless local area network user authentication
11/20/2003WO2003096204A1 Information processing device and method, information processing system, recording medium, and program
11/20/2003US20030217262 Gateway, communication terminal equipment, and communication control program
11/20/2003US20030217261 Mail processing apparatus and method
11/20/2003US20030217010 Method for loaning digital works
11/20/2003US20030215111 Image processing apparatus, image processing system, electronic information apparatus, image processing method, control program, and computer-readable recording medium
11/20/2003US20030215091 Rendering device, copy control method and program
11/20/2003US20030215089 Method and apparatus for encrypting and decrypting messages based on boolean matrices
11/20/2003US20030214229 Display device and methods of manufacture and control
11/19/2003EP1290647B1 Cryptography method and smart card microcircuit
11/19/2003EP1018078B1 Method for protecting of recorded digital data
11/19/2003CN1457169A Content issuing/receiving method
11/19/2003CN1457166A Encrypted/deciphering system and method thereof
11/19/2003CN1128522C Method of manufacturing generic meters in key management system
11/18/2003US6651170 Integrated circuit and smart card comprising such a circuit
11/18/2003US6651167 Authentication method and system employing secret functions in finite Abelian group
11/18/2003CA2256173C Closed system virtual postage meter
11/13/2003WO2003094491A1 System to enable a telecom operator provide financial transactions services and methods for implementing such transactions
11/13/2003WO2003094061A1 Data processing system for the organisation of lotteries
11/13/2003WO2003093959A2 Secure transmission and installation of an application
11/13/2003WO2003071416A3 On-line randomness test through overlapping word counts
11/13/2003WO2003071414A3 On-line randomness test for detecting irregular pattern
11/13/2003US20030212886 Encryption/decryption system and encryption/decryption method
11/13/2003US20030210781 Method for encrypting and decrypting messages based on boolean matrices, and data communication system
11/13/2003CA2484905A1 Data processing system for the organisation of lotteries
11/13/2003CA2481872A1 System to enable a telecom operator provide financial transactions services and methods for implementing such transactions
11/12/2003EP1361693A1 Handle deciphering system and handle deciphering method, and program
11/12/2003EP1361692A2 Encryption/decryption system and encryption/decryption method
11/12/2003EP1361511A1 Data processing method and its apparatus
11/12/2003EP1361497A2 Contents distribution scheme using tamper-resistant processor
11/12/2003EP1360793A2 Process and apparatus for improving the security of digital signatures
11/12/2003EP1360767A2 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
11/12/2003EP1360644A1 Security module comprising a volatile memory for storing an algorithm code
11/12/2003EP1360632A1 System for managing medical insurance using information communication network
11/12/2003EP1360623A2 An information management system
11/12/2003EP1044433B1 Method and system for controlling access to a resource limited to certain time frames
11/12/2003EP0965085B1 Personal computer and personal computer add-on card
11/12/2003CN1456006A Methods and arrangements in a telecommunications system
11/12/2003CN1455579A Image processing device and system and method, and electronic information device
11/12/2003CN1455346A Reproducing device and duplication control method
11/11/2003US6647493 Method and system for authentication and electronic signature
11/11/2003US6647260 Method and system facilitating web based provisioning of two-way mobile communications devices
11/11/2003US6647129 Method and system for encoding image and audio content
11/06/2003WO2003091861A2 Identity management system using single sign-on
11/06/2003WO2003055222A3 Increasing integrity of watermarks using robust features
11/06/2003WO2003036485A3 System and method for caching dram using an egress buffer
11/06/2003WO2002086659A3 Super distribution of music
11/06/2003WO2002060112A8 Apparatus, method and system for multiple resolution affecting information access
11/06/2003WO2002056156A3 Computer system protection
11/06/2003WO2002021803A8 Providing secure network access for short-range wireless computing devices
11/06/2003US20030208690 Authenticated search engines
11/06/2003US20030208561 Counterfeit STB prevention through protocol switching
11/06/2003US20030208517 Random number data generator
11/06/2003US20030208447 Repository with security class and method for use thereof
11/06/2003US20030206633 Image encrypting method, and image decrypting method
11/06/2003US20030206554 System and method for multicasting multimedia content
11/05/2003EP1359580A2 Recording and reproducing device, copy control method and program
11/05/2003EP1359551A1 Generation of secret numbers to identify an integrated circuit
11/05/2003EP1358733A1 Secure method for secret key cryptographic calculation and component using said method
11/05/2003EP1358732A1 Secure encryption method and component using same
11/05/2003EP1358729A2 Apparatus, method, and system for accessing digital rights management information
11/05/2003EP1358543A1 Apparatus method and system for registration effecting information access
11/05/2003EP1358530A2 Programmable logic device with method of prreventing readback
11/05/2003EP1252561B1 Microprocessor resistant to power analysis
11/05/2003CN1454338A System and method of verifying the authenticity of dynamically connectable executable images
11/05/2003CN1453744A IC card, portable terminal and access control method
11/05/2003CN1453718A Method for discriminating invited latent member to take part in group
11/04/2003US6643776 System and method for dynamic macro placement of IP connection filters
11/04/2003US6643374 Duty cycle corrector for a random number generator
10/2003
10/30/2003WO2003090429A1 Signature schemes using bilinear mappings
10/30/2003WO2003090402A1 Initializing, maintaining, updating and recovering secure operation within an integrated system employing a data access control function
1 ... 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 ... 126