| 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) |
|---|
| 08/22/2001 | EP1125189A1 Methods of digital steganography for multimedia data |
| 08/22/2001 | EP1125181A2 Apparatus for and method of electronic currency generation, transfer and redemption |
| 08/22/2001 | EP0767957B1 Method and apparatus for copy protection for various recording media |
| 08/21/2001 | US6279110 Masked digital signatures |
| 08/21/2001 | US6278864 Radio tranceiver for data communications |
| 08/21/2001 | US6278783 Des and other cryptographic, processes with leak minimization for smartcards and other cryptosystems |
| 08/21/2001 | US6278386 Method of inhibiting copying of digital data by encoding decryption date within alternative channel bit selections |
| 08/16/2001 | US20010014882 System for controlling the distribution and use of digital works using digital tickets |
| 08/16/2001 | US20010014156 Common key generating method, common key generator, cryptographic communication method and cryptographic communication system |
| 08/16/2001 | EP1123545A1 Copy method avoiding bit-to-bit duplication of digital data and reading device for implementing same |
| 08/15/2001 | CN1308803A System and method for electronic transmission, storage and retrieval of authenticated decouments |
| 08/15/2001 | CN1308426A Audio data broadcasting method and the system providing the data to broadcast emitter |
| 08/15/2001 | CN1308425A Audio Data transmitting method and audio data broadcast tranmitting system |
| 08/14/2001 | US6275936 Decryption method and device, and access right authentication method and apparatus |
| 08/09/2001 | WO2001058081A1 Method for checking the integrity of data, system and mobile terminal |
| 08/09/2001 | WO2001057750A1 Authentication system |
| 08/09/2001 | US20010012377 Steganographically encoding a first image in accordance with a second image |
| 08/09/2001 | US20010012366 Conditional access system for controlling the access to a data content |
| 08/09/2001 | US20010012364 Data-processing device and method of operating said device |
| 08/09/2001 | US20010012363 Pseudo-random sequence generator and associated method |
| 08/09/2001 | US20010012361 Encryption method, decryption method, cryptographic communication method and cryptographic communication system |
| 08/09/2001 | US20010012360 Method of executing a cryptographic protocol between two electronic entities |
| 08/08/2001 | EP1122928A2 A system amd method for authentication of electronic messages sent to a network server |
| 08/08/2001 | EP1122909A1 Method for performing a cryptographic protocol between two electronic units |
| 08/08/2001 | EP1122908A2 Encryption evaluation support system that can largely reduce evaluation time of encryption algorithm, and record medium recording its program |
| 08/08/2001 | CN1307769A Mask generating polynomials for pseudo-random noise generators |
| 08/08/2001 | CN1307724A Electronic bookshelf with multi-user features |
| 08/08/2001 | CN1307284A Method, device and medium for transfering and recording content information and decipher method and device |
| 08/07/2001 | US6272635 Data copyright management system |
| 08/07/2001 | US6272225 Key recovery condition encryption and decryption apparatuses |
| 08/07/2001 | US6272221 Encryption apparatus and computor-readable recording medium containing program for realizing the same |
| 08/07/2001 | CA2212664C Secret communication and authentication scheme based on public key cryptosystem using n-adic expansion |
| 08/02/2001 | WO2001056224A1 Storage device authentication system |
| 08/02/2001 | WO2001055979A1 Payment device and method for secure payment |
| 08/02/2001 | WO2001055858A1 Data recording/reproducing device and saved data processing method, and program providing medium |
| 08/02/2001 | WO2001055842A1 Device authentication apparatus and method, and recorded medium on which device authentication program is recorded |
| 08/02/2001 | WO2001055838A2 Modular exponential algorithm in an electronic component using a public key encryption algorithm |
| 08/02/2001 | WO2001055836A1 Random number generator |
| 08/02/2001 | WO2001055821A2 Microprocessor resistant to power analysis |
| 08/02/2001 | US20010011351 Anonymous participation authority management system |
| 08/02/2001 | US20010011349 System and method for encrypting a data session between a client and a server |
| 08/02/2001 | US20010011255 Reliance management for electronic transaction system |
| 08/02/2001 | US20010010724 Secret key generating method, encryption method, cryptographic communication method and cryptographic communication system |
| 08/02/2001 | US20010010722 Encryption and decryption method and apparatus using a work key which is generated by executing a decryption algorithm |
| 08/02/2001 | US20010010721 Common key generating method, common key generating apparatus, encryption method, cryptographic communication method and cryptographic communication system |
| 08/02/2001 | CA2365345A1 Data recording/reproducing device and saved data processing method, and program providing medium |
| 08/02/2001 | CA2361356A1 Storage device authentication system |
| 08/01/2001 | EP1120715A1 Data providing system, device, and method |
| 08/01/2001 | EP1119942A1 Method for establishing a common cryptographic key for n subscribers |
| 08/01/2001 | EP1119940A1 Countermeasure method in an electronic component using a secret key cryptographic algorithm |
| 08/01/2001 | EP1119939A1 Countermeasure method in an electronic component using a secret key cryptographic algorithm |
| 08/01/2001 | EP1119817A1 Cloning protection scheme for a digital information playback device |
| 08/01/2001 | CN2441202Y Security coded fuel tank cover |
| 08/01/2001 | CN1306714A Technique for producing privately authenticatable cryptographic signatures and for using such signature in conjunction with product copy |
| 08/01/2001 | CN1306713A Signature verification and authentication method |
| 08/01/2001 | CN1306712A Method and system of dynamic transformation of encrypted material |
| 08/01/2001 | CN1306664A Usage dependent ticket to protect copy-protected material |
| 07/31/2001 | US6269445 Electronic shopping method, electronic shopping system and document authenticating method relating thereto |
| 07/31/2001 | US6269383 Method and apparatus for integer arithmetic |
| 07/31/2001 | US6269163 Enhanced block ciphers with data-dependent rotations |
| 07/26/2001 | WO2001054346A1 Method for issuing an electronic identity |
| 07/26/2001 | WO2001054099A1 Data authentication system |
| 07/26/2001 | US20010010077 Computationally efficient modular multiplication method and apparatus |
| 07/26/2001 | US20010010045 System for controlling the distribution and use of digital works using digital tickets |
| 07/26/2001 | US20010009583 Secret key registration method, secret key register, secret key issuing method, cryptographic communication method and cryptographic communication system |
| 07/26/2001 | DE10021920C1 Data processing method for modulo calculation of division remainder has whole number represented by partial data words with calculation of argument via recursive steps |
| 07/26/2001 | CA2365236A1 Data authentication system |
| 07/25/2001 | EP1119133A2 Method and apparatus for secure data transmission via network |
| 07/25/2001 | EP1119131A2 Method and apparatus for encrypting contents information |
| 07/24/2001 | US6266775 Method and apparatus for displaying information and information recording medium having information displaying means |
| 07/24/2001 | US6266772 Authentication system for electronic data objects to be opened to public, and storage medium |
| 07/24/2001 | US6266717 System for controlling data exchange between a host device and a processor |
| 07/24/2001 | US6266430 Audio or video steganography |
| 07/24/2001 | US6266429 Method for confirming the integrity of an image transmitted with a loss |
| 07/24/2001 | US6266421 Key recovery system and key recovery method |
| 07/24/2001 | US6266417 Cryptographic communication process and apparatus |
| 07/24/2001 | US6266416 Protection of software against use without permit |
| 07/24/2001 | US6266415 Process for protecting an information item transmitted from a security element to a decoder and protection system using such a process |
| 07/19/2001 | WO2001016899A3 Portable terminal |
| 07/19/2001 | WO2000030285A8 Method and apparatus for secure distribution of authentication credentials to roaming users |
| 07/19/2001 | US20010009026 Device and method for authenticating user's access rights to resources |
| 07/19/2001 | US20010008558 Arbitrary function generating circuit using a simple operational element and an encryption method therefor |
| 07/18/2001 | EP1117207A2 Public key infrastructure |
| 07/18/2001 | EP1117206A2 Public key infrastructure |
| 07/18/2001 | EP1117204A2 Authorization infrastructure based on public key cryptography |
| 07/18/2001 | EP1116228A1 Copy protection method for digital data stored on a medium |
| 07/18/2001 | EP1116193A1 Method of improving security in electronic transactions |
| 07/18/2001 | EP1064621A4 System and method for management of postage meter licenses |
| 07/18/2001 | CN1304610A Method and apparatus for secure data transmission system |
| 07/18/2001 | CN1304602A Cryptographic system and method for electronic transactions |
| 07/18/2001 | CN1304116A Equipment of data processing and method operating said equipment |
| 07/18/2001 | CN1304112A System for electronized data administration and its method |
| 07/18/2001 | CN1304104A Method of authorizing based on role between enterprises |
| 07/17/2001 | US6263446 Method and apparatus for secure distribution of authentication credentials to roaming users |
| 07/17/2001 | US6263313 Method and apparatus to create encoded digital content |
| 07/17/2001 | US6263082 Pseudorandom number generation circuit and data communication system employing the same |
| 07/12/2001 | WO2001050676A2 Cryptographic isolator using multiplication |
| 07/12/2001 | WO2001050312A1 System and method for trusted self-billing for utilities |
| 07/12/2001 | US20010008013 Masked digital signatures |
| 07/12/2001 | US20010008012 Computer-readable medium having a private key encryption program |