| 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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| 05/16/2000 | CA2172860C Method of token verification in a key management system |
| 05/11/2000 | WO2000027090A2 Network protocol for secure communications |
| 05/11/2000 | WO2000027086A2 Network protocol for secure communications |
| 05/11/2000 | WO2000027070A1 Method and array for authenticating a first instance and a second instance |
| 05/11/2000 | WO2000027069A2 Incorporating shared randomness into distributed cryptography |
| 05/11/2000 | WO2000027068A1 Countermeasure method in an electronic component using a secret key cryptographic algorithm |
| 05/11/2000 | CA2723504A1 An agile network protocol for secure communications with assured system availability |
| 05/11/2000 | CA2347007A1 Incorporating shared randomness into distributed cryptography |
| 05/10/2000 | EP0998801A1 Data security in multipoint publish/subscribe communications |
| 05/10/2000 | EP0998800A1 Document or message security arrangements using a numerical hash function |
| 05/10/2000 | EP0727118B1 Method for improved security of crc encryption system |
| 05/09/2000 | US6061789 Secure anonymous information exchange in a network |
| 05/09/2000 | CA2285166A1 Secure method for generating cryptographic function outputs |
| 05/04/2000 | WO2000025204A1 Power signature attack resistant cryptography |
| 05/04/2000 | WO2000025203A1 Methods of digital steganography for multimedia data |
| 05/04/2000 | DE19850665A1 Verfahren und Anordnung zur Authentifikation von einer ersten Instanz und einer zweiten Instanz Method and apparatus for authenticating a first instance and a second instance |
| 05/03/2000 | EP0998095A2 Method for two party authentication and key agreement |
| 05/03/2000 | EP0997808A2 Controlling access to stored information |
| 05/03/2000 | EP0997017A2 Auto-recoverable auto-certifiable cryptosystems |
| 05/03/2000 | EP0997016A1 Method and apparatus for fast elliptical encryption with direct embedding |
| 05/03/2000 | EP0996914A1 Electronic bill presentment and payment system which deters cheating by employing hashes and digital signatures |
| 05/03/2000 | EP0730802A4 System and method for simultaneously authorizing multiple virtual channels |
| 05/03/2000 | CN1252203A Predictive coding method and decoding method for dynamic image |
| 05/03/2000 | CN1252198A Administration and utilization of secret fresh random numbers in networked environment |
| 05/03/2000 | CN1251931A Dynamic encryption method for document and its system |
| 05/02/2000 | US6058483 Method for secure transfer of data by a communication network |
| 05/02/2000 | US6058477 System and method for authentication, and device and method for authentication |
| 04/29/2000 | CA2287596A1 Controlling access to stored information |
| 04/27/2000 | WO2000024156A1 Countermeasure method in an electronic component using a secret key cryptographic algorithm |
| 04/27/2000 | WO2000024155A1 Countermeasure method in an electronic component using a secret key cryptographic algorithm |
| 04/27/2000 | WO2000023993A1 Copy method avoiding bit-to-bit duplication of digital data and reading device for implementing same |
| 04/26/2000 | EP0996250A2 Efficient block cipher method |
| 04/26/2000 | EP0996092A2 Efficient hashing method |
| 04/26/2000 | EP0995177A1 Symmetrically-secured electronic communication system |
| 04/26/2000 | CN1251715A Cyclotomic polynomial construction of discrete logarithm cryptosystem over finite fields |
| 04/26/2000 | CN1251451A Efficient hashing method |
| 04/26/2000 | CN1251444A Efficient block encryption method |
| 04/25/2000 | US6055635 Method and device for facilitating access to a multitude of alphanumeric sequences |
| 04/25/2000 | US6055316 System and method for deriving an appropriate initialization vector for secure communications |
| 04/21/2000 | CA2282044A1 Priority and security encoding system for electronic mail messages |
| 04/20/2000 | WO2000022775A1 Method for establishing a common cryptographic key for n subscribers |
| 04/20/2000 | CA2282051A1 Efficient block cipher method |
| 04/20/2000 | CA2280488A1 Efficient hashing method |
| 04/19/2000 | EP0994475A1 Digital content protection system |
| 04/19/2000 | EP0994424A2 High speed prime numbers calculation |
| 04/19/2000 | EP0994404A1 Production protection system dealing with contents that are digital production |
| 04/19/2000 | EP0993717A2 System and method for multicasting multimedia content |
| 04/19/2000 | EP0993662A1 Procedure for the control of applications stored in a subscriber identity module |
| 04/19/2000 | CN1251232A Method of and apparatus for encrypting signals for transmission |
| 04/18/2000 | US6052780 Computer system and process for accessing an encrypted and self-decrypting digital information product while restricting access to decrypted digital information |
| 04/18/2000 | US6052469 Interoperable cryptographic key recovery system with verification by comparison |
| 04/18/2000 | CA2194421C Cryptosystem |
| 04/18/2000 | CA2179497C Pseudo-random generator |
| 04/13/2000 | WO2000021241A1 Method and system for consumer electronic device certificate management |
| 04/13/2000 | DE19847941A1 Common cryptographic key establishment method for subscribers involves successively combining two known secret values into a new common value throughout using Diffie-Hellmann technique |
| 04/12/2000 | EP0992026A1 Payment process and system |
| 04/12/2000 | EP0741936A4 Pseudo-random generator |
| 04/12/2000 | CN1250534A Distributed service network |
| 04/11/2000 | US6049786 Electronic bill presentment and payment system which deters cheating by employing hashes and digital signatures |
| 04/11/2000 | US6049611 One-way data conversion apparatus and device authentication system |
| 04/06/2000 | WO2000019386A1 Data processing device and method for operating same which prevents a differential current consumption analysis |
| 04/06/2000 | WO2000019367A1 Data processing device and operating method for preventing a differential current consumption analysis |
| 04/05/2000 | EP0990226A1 System for secured reading and processing of data on intelligent data carriers |
| 04/05/2000 | EP0634038A4 A cryptographic communications method and system |
| 04/05/2000 | CN2372262Y Electronic anti-false container |
| 04/05/2000 | CN1249636A Method for transmitting sensitive message by initial unclassified communication |
| 04/05/2000 | CN1249588A Method for updating encrypted shared data in radio communication system |
| 04/05/2000 | CN1249587A Method for mutual authentication and cryptographic key agreement |
| 04/04/2000 | US6047265 Online gift-presentation system including, a server system, terminal equipment, a gift-presenting method, and a computer-readable recording medium |
| 04/04/2000 | US6047069 Method and apparatus for preserving error correction capabilities during data encryption/decryption |
| 04/04/2000 | CA2193281C Token generation process in an open metering system |
| 03/30/2000 | WO2000018109A1 Method for confirming the integrity of an image transmitted with a loss |
| 03/30/2000 | WO2000017871A1 Copy protection method for digital data stored on a medium |
| 03/30/2000 | WO2000017834A1 Method of improving security in electronic transactions |
| 03/29/2000 | EP0989497A1 Method and apparatus for protection of recorded digital data |
| 03/29/2000 | EP0989478A1 System for providing encrypted data, system for decrypting encrypted data and method for providing a communication interface in such a decrypting system |
| 03/29/2000 | EP0988754A1 Global conditional access system for broadcast services |
| 03/29/2000 | EP0988725A1 Data scrambling system and method and communications system incorporating same |
| 03/29/2000 | EP0988591A1 Obfuscation techniques for enhancing software security |
| 03/28/2000 | US6044463 Method and system for message delivery utilizing zero knowledge interactive proof protocol |
| 03/28/2000 | US6044350 Certificate meter with selectable indemnification provisions |
| 03/23/2000 | WO1999067919A3 Improved des and other cryptographic processes with leak minimization for smartcards and other cryptosystems |
| 03/22/2000 | EP0987855A2 Method and apparatus for encoding audio with auxiliary digital data |
| 03/22/2000 | EP0986910A1 Conditional access system for set-top boxes |
| 03/22/2000 | EP0986872A1 Device for carrying out a block cipher method |
| 03/22/2000 | EP0848872B1 Method and device for the sealing of computer data |
| 03/22/2000 | CN1248367A Method for authorization check |
| 03/22/2000 | CN1248366A Cryptographic system comprising ciphering and deiphering system and key escrow system and associated appliances and device |
| 03/16/2000 | WO2000014984A1 Security module, security system and mobile station |
| 03/16/2000 | WO2000014924A1 Elliptic curve cryptosystems for low memory devices |
| 03/16/2000 | WO2000014918A1 System and method for encrypting data messages |
| 03/16/2000 | WO2000014658A1 Cloning protection scheme for a digital information playback device |
| 03/15/2000 | EP0985203A1 Key transformation unit for an ic card |
| 03/15/2000 | EP0727117B1 Method for automatic resynchronization of the transmitter/receiver pair in a remote keyless entry system |
| 03/15/2000 | CN1247355A BCH sign encode, decode and multiple error-correcting device based on group transform method |
| 03/14/2000 | US6038549 Portable 1-way wireless financial messaging unit |
| 03/14/2000 | US6038321 Data transfer method, communication system and storage medium |
| 03/09/2000 | WO2000013412A1 A copy protection system for home networks |
| 03/09/2000 | WO2000013073A1 System for providing encrypted data, system for decrypting encrypted data and method for providing a communication interface in such a decrypting system |
| 03/09/2000 | WO1999066669A3 Block ciphers with integer multiplication, data-dependent and fixed number of rotations in each round |