| 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) |
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| 12/26/2001 | CN1328733A Countermeasure method in electronic component using secret key cryptographic algorithm |
| 12/26/2001 | CN1328675A Method for carrying out transactions and device for realising the same |
| 12/25/2001 | US6334216 Access control facility for a service-on-demand system |
| 12/25/2001 | US6334186 Method of reading, encrypting and transferring data |
| 12/20/2001 | WO2001097551A1 Mobile communication system |
| 12/20/2001 | WO2001097125A1 System for providing information using medium indicative of effective term and authorization of charged internet site and settling accounts for use of provided information |
| 12/20/2001 | WO2001097124A1 Certification method using variable encryption key system based on encryption key of certification medium and inherent information of computer hardware, and certification medium for storing the same and indicating effective term and authorization thereof |
| 12/20/2001 | WO2001071961A9 System, method and computer program product for providing unified authentication services for online applications |
| 12/20/2001 | WO2001055838A3 Modular exponential algorithm in an electronic component using a public key encryption algorithm |
| 12/20/2001 | WO2001040950A3 Microprocessor arrangement having an encoding function |
| 12/20/2001 | WO2000059177A8 Server computer for guaranteeing files integrity |
| 12/20/2001 | US20010054146 Method and system of reversibly marking a text document with a pattern of extra blanks for authentication |
| 12/20/2001 | US20010054027 Restriction canceling apparatus |
| 12/20/2001 | US20010053979 Copyright protecting method of digital data and protecting system thereof |
| 12/20/2001 | US20010053714 Electronic lottery system and its operating method and computer- readable recording medium in which the electronic lottery program code is stored |
| 12/20/2001 | US20010053236 Audio or video steganography |
| 12/20/2001 | US20010053223 Content transaction system and method, and program providing medium therefor |
| 12/20/2001 | US20010053222 Data processing apparatus and method |
| 12/20/2001 | US20010053220 Cryptographic computation using masking to prevent differential power analysis and other attacks |
| 12/19/2001 | EP1164748A1 Storage device authentication system |
| 12/19/2001 | EP1164588A2 Information outputting apparatus and method, information recording apparatus and method, information outputting recording system and information recording medium |
| 12/19/2001 | EP1163589A1 Authentication enforcement using decryption and authentication in a single transaction in a secure microprocessor |
| 12/19/2001 | EP1163559A1 Method for securing access to a data processing device and appropriate device |
| 12/19/2001 | EP0688480B1 A method and system for audio information dissemination using various transmission modes |
| 12/19/2001 | EP0669064B1 Apparatus and method for providing data security in a computer system having a removable memory |
| 12/19/2001 | CN2466738Y Multigroup infrared remote controlling device |
| 12/18/2001 | US6332133 Personal electronic settlement system, its terminal, and management apparatus |
| 12/13/2001 | WO2001095310A1 Data control device, storage medium storing data control program, storage medium storing usage certifying data and data using method |
| 12/13/2001 | WO2001095071A2 Method for signing documents using a pc and a personal terminal device |
| 12/13/2001 | WO2001069556A3 Method and system for secure payments over a computer network |
| 12/13/2001 | US20010052078 Information outputting apparatus and information outputting method, information recording apparatus and information recording method, information outputting recording system and information recording medium |
| 12/12/2001 | EP1162782A2 Authenticated search engines |
| 12/12/2001 | EP1161812A1 Voice and data encryption method using a cryptographic key split combiner |
| 12/12/2001 | EP1161806A1 Key management for telephone calls to protect signaling and call packets between cta's |
| 12/12/2001 | EP1161726A1 Method and apparatus for minimizing differential power attacks on processors |
| 12/12/2001 | EP0861540A4 Apparatus and method for encrypting mpeg packets |
| 12/12/2001 | EP0834238B1 Process and device for transmitting confidential connection and service information between subscriber terminals and one or more digital exchanges |
| 12/12/2001 | CN1326629A Method and system for authenticating and utilizing secure resources in computer system |
| 12/12/2001 | CN1326579A Authenticating method between smart card and terminal |
| 12/11/2001 | US6330671 Method and system for secure distribution of cryptographic keys on multicast networks |
| 12/11/2001 | US6330335 Audio steganography |
| 12/11/2001 | US6330333 Cryptographic system for wireless communications |
| 12/11/2001 | US6330332 Prime number generation apparatus B-smoothness judgement apparatus and computer memory product |
| 12/11/2001 | CA2308386C Method for digital signing of a message |
| 12/06/2001 | WO2001093497A1 A method of validating an encrypted message |
| 12/06/2001 | WO2001093496A1 A method of protecting a cryptosystem from a multiple transmission attack |
| 12/06/2001 | WO2001093495A1 Decryption of cipher polynomials |
| 12/06/2001 | WO2001093493A2 End of message markers |
| 12/06/2001 | WO2001093216A1 Cryptography method and smart card microcircuit |
| 12/06/2001 | WO2001093015A1 Parallel modulo arithmetic using bitwise logical operations |
| 12/06/2001 | WO2001093013A1 Pseudo-random number generator |
| 12/06/2001 | WO2001092994A2 Method for biometric encryption of e-mail |
| 12/06/2001 | US20010049665 Master digital data creation device and digital data reproduction device |
| 12/06/2001 | US20010048741 Method of calculating multiplication by scalars on an elliptic curve and apparatus using same and recording medium |
| 12/06/2001 | DE10024325A1 Kryptographisches Verfahren und kryptographische Vorrichtung Cryptographic method and cryptographic device |
| 12/06/2001 | CA2413381A1 A method of protecting a cryptosystem from a multiple transmission attack |
| 12/06/2001 | CA2410608A1 A method of validating an encrypted message |
| 12/06/2001 | CA2410607A1 Decryption of cipher polynomials |
| 12/06/2001 | CA2410421A1 Parallel modulo arithmetic using bitwise logical operations |
| 12/06/2001 | CA2410418A1 Pseudo-random number generator |
| 12/06/2001 | CA2410417A1 End of message markers |
| 12/05/2001 | EP1160745A2 Data storage device and data storage method, information-processing apparatus and information-processing method, and program |
| 12/05/2001 | EP1160661A2 Method of calculating multiplication by scalars on an elliptic curve and apparatus using same |
| 12/05/2001 | EP1159801A1 Method for verifying a message signature |
| 12/05/2001 | EP1159800A1 Method of ciphering data transmission in a radio system |
| 12/05/2001 | EP1159797A1 Countermeasure method in an electronic component using a secret key cryptographic algorithm |
| 12/05/2001 | EP1159700A2 Portable electronic charge and authorization devices and methods therefor |
| 12/05/2001 | EP1159660A1 Computing apparatus and methods using secure authentication arrangement |
| 12/05/2001 | EP0809903A4 Electronic transfer system and method |
| 12/05/2001 | CN2463901Y Digital anti-forging totally-enclosed digital cipher indentifier |
| 12/04/2001 | US6327654 Semiconductor integrated circuit for cryptographic process and encryption algorithm alternating method |
| 11/29/2001 | WO2001091007A1 System and method for production and authentication of original documents |
| 11/29/2001 | US20010046296 Encryption method and cryptographic communication method |
| 11/29/2001 | US20010046291 Accelerated signature verification on an elliptic curve |
| 11/29/2001 | CA2410089A1 System and method for production and authentication of original documents |
| 11/28/2001 | EP1125189A4 Methods of digital steganography for multimedia data |
| 11/28/2001 | EP1000510B1 Mechanism and apparatus for encapsulation of entitlement authorization in conditional access system |
| 11/28/2001 | EP0852044B1 Method and apparatus for user authentication |
| 11/28/2001 | CN2462501Y Improved CD |
| 11/28/2001 | CN1324024A Data storage device and data storage method, data processing device and data processing method, and program therefor |
| 11/27/2001 | US6324518 Electronic information utilization promotion system |
| 11/27/2001 | CA2250931C Ciphering and deciphering of multimedia data |
| 11/22/2001 | WO2001089131A2 A method and system for performing permutations using permutation instructions based on modified omega and flip stages |
| 11/22/2001 | WO2001089129A2 Extending the range of computational fields of integers |
| 11/22/2001 | WO2001088694A1 Method and apparatus for performing computations using residue arithmetic |
| 11/22/2001 | WO2001088693A2 Cryptographic method and cryptographic device |
| 11/22/2001 | WO2001088674A2 Method and apparatus for managing secure collaborative transactions |
| 11/22/2001 | WO2001035572A3 Method and apparatus for efficient irregular synchronization of a stream cipher |
| 11/22/2001 | WO2001035194A3 Method and apparatus for providing redundant and resilient cryptographic services |
| 11/22/2001 | US20010044895 User authentication method, and storage medium, apparatus and system therefor |
| 11/22/2001 | US20010044780 Digital contents distribution system capable of flexibly changing using conditions |
| 11/22/2001 | CA2375058A1 A method and system for performing permutations using permutation instructions based on modified omega and flip stages |
| 11/21/2001 | EP1156618A2 Chaos cryptographic communication method and chaos cryptographic communication system |
| 11/21/2001 | EP0672273B1 Method and apparatus for encryption having a feedback register with selectable taps |
| 11/21/2001 | CN1323477A Method for testing a random number source and electronic devices comprising said method |
| 11/21/2001 | CN1323476A Countermeasure method in an electronic component using a secret key cryptographic algorithm |
| 11/21/2001 | CN1323438A Copy method avoiding bit-to-bit duplication of digital data and reading device for implementing same |
| 11/20/2001 | US6321201 Data security system for a database having multiple encryption levels applicable on a data element value level |
| 11/20/2001 | CA2203779C Digital document authentication system for providing a certificate which authenticates and uniquely identifies a document |
| 11/15/2001 | WO2001086911A2 Protocol for secure communications |