| 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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| 04/13/2004 | CA2329032C A cryptographic system and method for electronic transactions |
| 04/11/2004 | WO2004095772A1 Device authentication system |
| 04/08/2004 | WO2004030297A1 Method for the transmission of data telegrammes in a switched cyclical communication system |
| 04/08/2004 | US20040068757 Digital signatures for digital television applications |
| 04/08/2004 | US20040068658 Electronic commerce method |
| 04/08/2004 | US20040068541 Broadcast and reception, and conditional access system therefor |
| 04/08/2004 | US20040066797 Electronic data transmission and reception system |
| 04/08/2004 | CA2499618A1 Method for the transmission of data telegrams in a switched cyclical communication system |
| 04/08/2004 | CA2441186A1 Digital signatures for digital television applications |
| 04/07/2004 | CN1488117A 内容分布系统 Content Distribution System |
| 04/07/2004 | CN1488112A Dispensing system, semiconductor storing card, receiving device, computer readable recording medium and receiving method |
| 04/07/2004 | CN1488094A 产生随机数据 Generate random data |
| 04/07/2004 | CN1145302C Coditional information access system with multi encrypted code |
| 04/07/2004 | CN1145116C Identification method between smart card and terminal |
| 04/06/2004 | US6718536 Computer-implemented method for fast generation and testing of probable prime numbers for cryptographic applications |
| 04/06/2004 | US6718314 Multi-purpose transaction card system |
| 04/06/2004 | CA2279923C Predictive coding method and decoding method for dynamic image |
| 04/01/2004 | WO2004028153A1 A video recorder unit and method of operation therefor |
| 04/01/2004 | WO2004027631A1 Authentication hardware, authentication system, and use management hardware |
| 04/01/2004 | WO2004027618A1 Dynamic negotiation of security arrangements between web services |
| 04/01/2004 | WO2004006559A3 Secure presentation of encrypted digital content |
| 04/01/2004 | WO2003012628A3 Method and apparatus for random bit-string generation utilizing environment sensors |
| 04/01/2004 | US20040064495 Polynomial inverse computing apparatus, multiplier apparatus and polynomial inverse computing method |
| 04/01/2004 | US20040064485 File management apparatus and method |
| 04/01/2004 | US20040064417 Method for controlling use of database content |
| 04/01/2004 | US20040064274 Residue calculating unit immune to power analysis |
| 04/01/2004 | US20040062391 Data encryption system and method |
| 04/01/2004 | DE10243850A1 Verfahren zur Übertragung von Datentelegrammen in einem geschalteten, zyklischen Kommunikationssystem Method for transmitting data messages in a switched, cyclic communication system |
| 04/01/2004 | DE10239062A1 Verfahren zum Übertragen von verschlüsselten Nutzdatenobjekten A method for transmitting encrypted user data |
| 03/31/2004 | EP1404052A2 Data encryption system and method |
| 03/31/2004 | EP1403847A2 System, method and computer program for ensuring secure use of music playing data files |
| 03/31/2004 | EP1403840A1 Arithmetic device and encryption/decryption device |
| 03/31/2004 | EP1403769A1 Data transfer system, data transfer apparatus, data recording apparatus, data transfer method |
| 03/31/2004 | EP1402678A1 Intelligent secure data manipulation apparatus and method |
| 03/31/2004 | EP0867084A4 Tame automorphism public key system |
| 03/31/2004 | CN1486556A A communication system with ciphering key generation |
| 03/31/2004 | CN1485514A Key encoding method |
| 03/31/2004 | CN1144418C Method and device for authenticating first instance and second instance |
| 03/31/2004 | CN1144417C Information reproducing device method |
| 03/30/2004 | US6715085 Initializing, maintaining, updating and recovering secure operation within an integrated system employing a data access control function |
| 03/30/2004 | US6714923 Method for encrypting and decrypting information using rule-based templates embedded with synthetic gene sequences |
| 03/30/2004 | US6714921 System for controlling the distribution and use of digital works using digital tickets |
| 03/30/2004 | CA2203131C Method and apparatus for secure identification of a mobile user in a communication network |
| 03/27/2004 | CA2441887A1 Method for generating random number and random number generator |
| 03/25/2004 | WO2004025842A2 System for efficient recovery of node-b buffered data following mac layer reset |
| 03/25/2004 | WO2004025437A2 Method for transmitting encrypted user data objects |
| 03/25/2004 | US20040059936 Image authentication apparatus, image authentication method, and image authentication program |
| 03/25/2004 | US20040059928 Semiconductor device including encryption section, semiconductor device including external interface, and content reproduction method |
| 03/25/2004 | US20040059919 Security system for preventing a personal computer from being used by an unauthorized people |
| 03/25/2004 | US20040059916 Memory card |
| 03/25/2004 | US20040059911 Transmission apparatus and receiving apparatus |
| 03/25/2004 | US20040059517 Signal statistics determination |
| 03/25/2004 | US20040057581 Method and apparatus for transaction card security utilizing embedded image data |
| 03/25/2004 | CA2615915A1 System for efficient recovery of node-b buffered data following mac layer reset |
| 03/24/2004 | EP1399896A1 Cryptographic method of protecting an electronic chip against fraud |
| 03/24/2004 | EP1399807A1 Method for encrypting a calculation using a modular function |
| 03/24/2004 | CN1484902A Multiple authentication sessions for content protection |
| 03/24/2004 | CN1484450A Quick digital channel switching |
| 03/24/2004 | CN1143224C Secure network protocol system and method |
| 03/23/2004 | US6711262 Procedure for the control of applications stored in a subscriber identity module |
| 03/18/2004 | WO2004023832A1 Method for calculating hashing of a message in a device communicating with a smart card |
| 03/18/2004 | WO2004023694A1 Image encryption method and visual decryption device |
| 03/18/2004 | WO2004023286A2 Feedback random number generation method and system |
| 03/18/2004 | US20040054912 Data stream header object protection |
| 03/18/2004 | US20040054899 Apparatus and methods for providing secured communication |
| 03/18/2004 | US20040054779 Network system |
| 03/18/2004 | US20040054703 Method and device for generating a pseudo-random sequence using a discrete logarithm |
| 03/18/2004 | US20040054631 Method for checking postage stamps on letters and parcels |
| 03/18/2004 | US20040053051 Scheme for realizing communications through external network from contents processing device connected to local network in home environment |
| 03/18/2004 | US20040052400 Electronic document, genuineness management method for print medium thereof, genuineness management system, program, and program recording medium |
| 03/18/2004 | US20040052375 Dynamic systm bus encryption using improved differential transitional encoding |
| 03/18/2004 | US20040052229 System for efficient recovery of Node-B buffered data following MAC layer reset |
| 03/17/2004 | EP1398901A1 Feistel type encryption method and apparatus protected against DPA attacks |
| 03/17/2004 | EP1398710A2 Network system |
| 03/17/2004 | CN1483271A Apparatus and method for security processing of communication packets |
| 03/17/2004 | CN1483265A Techniques for performing UMTS (universal mobile telecommunications system) authentication using SIP (session initiation protocol) messages |
| 03/17/2004 | CN1483260A Method and device for detecting a key pair and for generating rsa keys |
| 03/17/2004 | CN1483159A Random number generator and method for generating a random number |
| 03/17/2004 | CN1482574A Image formatting device |
| 03/17/2004 | CN1482568A System for preventing unauthorized use of recording media |
| 03/17/2004 | CN1482560A Network seal authentication system |
| 03/17/2004 | CN1142465C Technology for making holographic mother plate with multi-encryption hidden rainbow |
| 03/16/2004 | US6708275 Process and device for transmitting confidential connection establishment and service information between subscriber terminals and one or more digital exchanges |
| 03/16/2004 | US6708272 Information encryption system and method |
| 03/16/2004 | US6708200 Communication system and communication method |
| 03/16/2004 | US6708158 Method for encoding the volumetric information of a virtual object and the retrieval of same |
| 03/16/2004 | US6708157 System for controlling the distribution and use of digital works using digital tickets |
| 03/11/2004 | WO2004021275A2 Embedding fingerprint data for media content identification |
| 03/11/2004 | WO2004001985A3 Authentication in a communication system |
| 03/11/2004 | WO2003100544A3 Method for authenticating a user to a service of a service provider |
| 03/11/2004 | US20040049679 Authenticating method and device |
| 03/11/2004 | US20040049648 Content recording/playback appratus, and recording medium storing program for content recording/playback |
| 03/11/2004 | US20040049646 Data storage apparatus |
| 03/11/2004 | US20040049525 Feedback random number generation method and system |
| 03/11/2004 | US20040047465 Enciphering and deciphering apparatus, and enciphering and deciphering method |
| 03/11/2004 | DE10307942B3 Half adder for cryptographic applications has input stage for 3 input operands, switching stages for output bits and corresponding output stages |
| 03/10/2004 | EP1397014A1 WIM (WAP Identification module) Primitives for handling the secure socket layer protocol (SSL) |
| 03/10/2004 | EP1396978A2 Header Object Protection for a Data Stream |
| 03/10/2004 | EP1396791A1 Data transfer system, data transfer apparatus, data recording apparatus, data management method, identifier generation method |
| 03/10/2004 | EP1396778A2 Semiconductor device including encryption section, semiconductor device including external interface, and content reproduction method |