| 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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| 06/29/2000 | CA2321048A1 Method for inserting a watermark signal into data |
| 06/28/2000 | EP1014617A2 Method and apparatus for elliptic curve cryptography and recording medium therefor |
| 06/28/2000 | EP1014310A2 Certificate meter with selectable indemnification provisions |
| 06/28/2000 | EP1013091A1 Source authentication of download information in a conditional access system |
| 06/28/2000 | EP1013030A1 Method and apparatus for secure storage of data |
| 06/28/2000 | EP1012703A1 Modular arithmetic coprocessor comprising an integer division circuit |
| 06/28/2000 | EP1012691A1 Encrypting file system and method |
| 06/28/2000 | CN1258359A Method and apparatus for signing and sealing objects |
| 06/28/2000 | CN1258057A Information processing device |
| 06/28/2000 | CA2293168A1 Electronic tender system |
| 06/27/2000 | USRE36752 Cryptographic authentication of transmitted messages using pseudorandom numbers |
| 06/27/2000 | US6081794 Data copyright management system |
| 06/27/2000 | US6081598 Cryptographic system and method with fast decryption |
| 06/27/2000 | US6081597 Public key cryptosystem method and apparatus |
| 06/22/2000 | WO2000036786A1 Cryptographic device with encryption blocks connected in parallel |
| 06/22/2000 | WO2000010068B1 Apparatus for and method of electronic currency generation, transfer and redemption |
| 06/21/2000 | EP1011269A1 System for processing an information signal |
| 06/21/2000 | EP1011222A2 Electronic data storage apparatus with key management function and electronic data storage method |
| 06/21/2000 | EP1011081A1 Information processing equipment |
| 06/21/2000 | EP1010331A1 Method of and apparatus for transmitting data for interactive tv applications |
| 06/21/2000 | EP1010323A1 Verification of the source of program of information in a conditional access system |
| 06/21/2000 | EP1010320A1 Broadcast receiving system comprising a computer and a decoder |
| 06/21/2000 | EP1010068A1 Downloading a computer file from a transmitter via a receiver/decoder to a computer |
| 06/21/2000 | CN1257630A Broadcast receiving system composed of computer and decoder |
| 06/21/2000 | CN1257256A Method and system for identifying object and object data |
| 06/20/2000 | US6078908 Method for authorizing in data transmission systems |
| 06/15/2000 | WO2000035198A1 System for processing an information signal |
| 06/15/2000 | WO2000035163A1 A method for optimizing of data transmission |
| 06/15/2000 | WO2000035143A1 Message identification with confidentiality, integrity, and source authentication |
| 06/15/2000 | WO2000035135A1 Secure system using continuously-changing features of a body part as a key |
| 06/15/2000 | WO2000006531A3 Nitric esters and nitrate salts of specific drugs |
| 06/15/2000 | WO1999052241A3 Generating rsa moduli including a predetermined portion |
| 06/14/2000 | EP1008989A2 Method and apparatus for processing information, and recording medium |
| 06/14/2000 | EP1008026A4 Improved apparatus & method for modular multiplication & exponentiation based on montgomery multiplication |
| 06/14/2000 | EP1008026A1 Improved apparatus & method for modular multiplication & exponentiation based on montgomery multiplication |
| 06/14/2000 | EP0882340A4 Use of an encryption server for encrypting messages |
| 06/14/2000 | CN1256775A Electronic transaction |
| 06/14/2000 | CN1256768A Personal computer and personal computer add-on card |
| 06/14/2000 | CN1256595A Determination and management method of identification character for temporary mobile station |
| 06/14/2000 | CN1256459A Digital works protecting system |
| 06/13/2000 | US6076164 Authentication method and system using IC card |
| 06/13/2000 | US6076162 Certification of cryptographic keys for chipcards |
| 06/13/2000 | US6075865 Cryptographic communication process and apparatus |
| 06/13/2000 | US6075862 Decryption key management scheme for software distribution system |
| 06/13/2000 | US6075859 Method and apparatus for encrypting data in a wireless communication system |
| 06/13/2000 | CA2193114C Encrypted program executing apparatus |
| 06/07/2000 | EP1006492A1 Information processing equipment and IC card |
| 06/07/2000 | CN1255692A Information processing device and IC card |
| 06/06/2000 | US6073236 Authentication method, communication method, and information processing apparatus |
| 06/06/2000 | US6073234 Device for authenticating user's access rights to resources and method |
| 06/06/2000 | US6072875 Method and apparatus for secure identification of a mobile user in a communication network |
| 06/06/2000 | US6072874 Signing method and apparatus using the same |
| 06/02/2000 | WO2000031700A1 Method for carrying out transactions and device for realising the same |
| 06/02/2000 | WO2000011828A8 Time-stamping with binary linking schemes |
| 05/31/2000 | EP1005191A1 Encryption/decryption unit and storage medium |
| 05/31/2000 | EP1004101A1 Terminal and system for implementing secure electronic transactions |
| 05/31/2000 | CN1255268A Method of and apparatus for transmitting data for interactive TV. applications |
| 05/31/2000 | CN1255266A Method and apparatus for preventing fraudulent access in conditional access system |
| 05/31/2000 | CN1255212A Computer memory organization |
| 05/31/2000 | CN1254889A Dynamic electronic cipher system |
| 05/30/2000 | US6069956 Method and apparatus for encrypting multiplexed data streams using key information continued in streams |
| 05/30/2000 | US6069952 Data copyright management system |
| 05/25/2000 | WO2000030292A1 Method and system for authenticating and utilizing secure resources in a computer system |
| 05/25/2000 | WO2000030285A1 Method and apparatus for secure distribution of authentication credentials to roaming users |
| 05/25/2000 | WO2000030048A1 Authenticating method between a smart card and a terminal |
| 05/25/2000 | CA2351652A1 Authenticating method between a smart card and a terminal |
| 05/24/2000 | EP1003308A1 Priority and security coding system for electronic mail messages |
| 05/24/2000 | EP1003127A2 Digital signature or electronic seal authentication system and recognized mark management program |
| 05/24/2000 | EP1002393A2 System for generating electronic signatures in absolute security |
| 05/24/2000 | EP0912920B1 System for secure data storage on cd-rom |
| 05/24/2000 | CN1254478A Data processing system |
| 05/24/2000 | CN1254477A Transmission and reception of television programmes and other data |
| 05/24/2000 | CN1254476A Signal generation and broadcasting |
| 05/24/2000 | CN1254475A Method of downloading of data to MPEG receiver/decoder and MPEG transmission system for implementing the same |
| 05/24/2000 | CN1254474A Smartcard for use with receiver of encrypted broadcast signals, and receiver |
| 05/24/2000 | CN1254473A Broadcast and reception system, and conditional access system therefor |
| 05/24/2000 | CN1254472A Broadcast and reception system, and receiver/decoder and remote controller |
| 05/24/2000 | CN1254469A Extracting data sections from transmitted data stream |
| 05/24/2000 | CN1254464A Transmitting revisions with digital signatures |
| 05/24/2000 | CN1254423A Television or radio control system development |
| 05/24/2000 | CN1254422A Downloading computer file from transmitter via receiver/decoder to computer |
| 05/24/2000 | CN1254234A Information packet program composition detector |
| 05/23/2000 | US6067621 User authentication system for authenticating an authorized user of an IC card |
| 05/23/2000 | US6067359 PN sequence generator with bidirectional shift register and Eulerian-graph feedback circuit |
| 05/23/2000 | CA2192252C Electronic transfer system and method |
| 05/18/2000 | WO2000028695A1 Method and apparatus for secure digital chaotic communication |
| 05/18/2000 | WO2000010068A3 Apparatus for and method of electronic currency generation, transfer and redemption |
| 05/17/2000 | EP1001641A2 Secure method for generating cryptographic function outputs |
| 05/17/2000 | EP1001398A1 Ciphering apparatus |
| 05/17/2000 | EP1000510A1 Mechanism and apparatus for encapsulation of entitlement authorization in conditional access system |
| 05/17/2000 | EP1000509A1 Encryption devices for use in a conditional access system |
| 05/17/2000 | EP1000508A1 Authorization of services in a conditional access system |
| 05/17/2000 | CN1253438A Digital sign or electron seal identification system and identification mark management sequence |
| 05/17/2000 | CN1253437A Common cryptographic key cipher system possessing enhanced protection to prevent selective cipher script attack |
| 05/16/2000 | US6064993 Closed system virtual postage meter |
| 05/16/2000 | US6064741 Method for the computer-aided exchange of cryptographic keys between a user computer unit U and a network computer unit N |
| 05/16/2000 | US6062481 Optimal error-detecting, error-correcting and other coding and processing, particularly for bar codes, and applications therefor such as counterfeit detection |
| 05/16/2000 | CA2176990C Secure receipt-free electronic voting |
| 05/16/2000 | CA2173008C Cryptographic key management and validating system |
| 05/16/2000 | CA2172861C Method of manufacturing generic meters in a key management system |