Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 9 - Arrangements for secret or secure communication
Patents for H04L 9 - Arrangements for secret or secure communication (111,914)
10/1990
10/29/1990WO1990013865A1 Method and apparatus for remotely controlling and monitoring the use of computer software
10/24/1990EP0393806A2 Cryptographic method and apparatus for public key exchange with authentication
10/24/1990EP0239638B1 Data processing system for a financial environment
10/23/1990US4965827 Authenticator
10/23/1990US4965804 Key management for encrypted packet based networks
10/23/1990US4965568 Multilevel security apparatus and method with personal key
10/23/1990CA1275506C Data transmission security arrangement for a plurality of data stations sharing access to a communication network
10/16/1990US4964164 RSA computation method for efficient batch processing
10/10/1990EP0391261A2 Method and apparatus for implementing electronic cash
10/09/1990US4962532 Method for providing notification of classified electronic message delivery restriction
10/04/1990WO1990011498A1 Analog processing system
10/03/1990EP0389895A1 Method and apparatus for user identification based on permuted kernels
10/02/1990US4961221 Communication method and system with encryption of information
09/1990
09/26/1990EP0388700A1 Method for generating a random cipher for the cryptographic transmission of data
09/26/1990EP0282570A4 Metering retrieval of encrypted data stored in customer data retrieval terminal
09/26/1990EP0238537B1 System for preventing software piracy employing multi-encrypted keys and single decryption circuit modules
09/25/1990CA1274627A1 Data converter
09/19/1990EP0387599A2 Method of encrypting transmitted data using a unique key
09/12/1990EP0386903A1 Controlled authorisation of descrambling of scrambled programs broadcast between different jurisdictions
09/12/1990EP0386867A2 Improved public key/signature cryptosystem with enhanced digital signature certification
09/12/1990EP0386677A2 Method for the generation of a random number for encyphered data transmission, using a variable start-value
09/12/1990EP0313576A4 Gateway system and method for interconnecting telephone calls with a digital voice protected radio network
09/11/1990US4956863 Cryptographic method and apparatus for public key exchange with authentication
09/07/1990WO1990010344A1 Improved encryption printed circuit board
09/06/1990DE3905703A1 Method for electronic signature
09/05/1990EP0385511A2 Cipher-key distribution system
09/05/1990EP0385400A2 Multilevel security apparatus and method with personal key
08/1990
08/29/1990EP0384478A2 Information stream enciphering and deciphering method
08/29/1990EP0384475A1 Method for subscriber identification and for the generation and verification of electronic signatures in a data exchange system
08/29/1990EP0383985A1 Method for subscriber identification and for generation and verification of electronic signatures in a data exchange system
08/28/1990US4953209 Self-verifying receipt and acceptance system for electronically delivered data objects
08/23/1990WO1990009647A1 Device for identifying information
08/21/1990US4951247 Data exchange system comprising a plurality of user terminals each containing a chip card reading device
08/21/1990CA1273109A1 Secured printer for a value printing system
08/21/1990CA1273106A1 Method for authenticating by an external medium a portable object such as a memory card coupled to that medium________________________________
08/16/1990EP0382680A1 Method for cryptographically processing data, and cryptographic system
08/16/1990DE3904180A1 Device for identifying messages
08/14/1990US4949380 Returned-value blind signature systems
08/14/1990US4949379 Process for encrypted information transmission
08/09/1990WO1990009009A1 Data carrier and data communication apparatus using the same
08/09/1990DE4003671A1 Spread spectrum communication system - uses convolver as correlator for pseudo-random code signals
08/08/1990EP0381523A2 Server-aided computation method and distributed information processing unit
08/07/1990US4947430 Undeniable signature systems
08/07/1990US4947428 Process for the broadcasting and reception of access title control messages
08/07/1990CA2008969A1 Spread spectrum communication device
07/1990
07/31/1990US4945468 Trusted path mechanism for virtual terminal environments
07/25/1990EP0379333A1 Secure data interchange system
07/24/1990US4944009 Pseudo-random sequence generator
07/24/1990US4944007 Public key diversification method
07/24/1990US4944006 Secure data packet transmission system and method
07/18/1990EP0377706A1 System and method for the secure handling of encryptor keys.
07/18/1990EP0377687A1 Spectrally efficient method for communicating an information signal
07/12/1990WO1990007846A1 Process for scrambling pal secam and ntsc composite video signals and decoder of resulting scrambled signals
07/12/1990WO1990007845A1 Scrambling and unscrambling of composite video signals
07/11/1990EP0377241A1 Pseudo-random sequence generator
07/10/1990US4941176 In a data processing system
07/10/1990US4941173 Device and method to render secure the transfer of data between a videotex terminal and a server
07/04/1990CN1043594A Data encryption key failure monitor
06/1990
06/27/1990EP0375540A1 Method for scrambling composite PAL, SECAM and NTSC video signals, and decoder for signals scrambled by this method
06/27/1990EP0375539A1 Method for scrambling and descrambling composite video signals, and apparatus therefor
06/27/1990EP0375139A2 Classified document transmission control
06/27/1990EP0374225A1 Method and device for authentication.
06/26/1990US4937574 Data conversion
06/23/1990CA2006459A1 Method for scrambling and unscrambling composite video signals and device using said method
06/23/1990CA2006458A1 Method for scrambling pal, secam and ntsc composite video signals and decoder for unscrambling said signals
06/20/1990EP0374028A1 Method and communication system with information enciphering
06/20/1990EP0373175A1 Device for identification of messages.
06/19/1990US4935962 Method and system for authentication
06/19/1990US4935961 Method and apparatus for the generation and synchronization of cryptographic keys
06/15/1990CA2005323A1 Sequential correlator for spread spectrum communication system
06/14/1990WO1990006646A1 Data encryption key failure monitor
06/12/1990US4933971 Method for encrypting transmitted data using a unique key
06/12/1990US4933970 Variants of the fiat-shamir identification and signature scheme
06/12/1990US4933969 Data authentication and protection system
06/06/1990EP0371673A2 Secure file handling in a computer operating system
06/05/1990US4932057 Parallel transmission to mask data radiation
06/05/1990US4932056 Method and apparatus for user identification based on permuted kernels
05/1990
05/31/1990WO1990006029A1 Adaptive data ciphering/deciphering apparatus and data communication system employing said apparatus
05/23/1990EP0189476B1 Security system and method for remote terminal network
05/23/1990CN1008142B Cryptographic system
05/22/1990US4928310 Pseudorandom pulse code generators using electro-optical XOR gates
05/16/1990EP0368596A2 On-line/off-line digital signing
05/15/1990US4926480 Card-computer moderated systems
05/15/1990US4926479 Multiprover interactive verification system
05/15/1990US4926478 Authentication system
05/15/1990US4926475 Data encryption key failure monitor
05/09/1990EP0367700A2 A method of verifying receipt and acceptance of electronically delivered data objects
05/08/1990US4924515 In a data processing system
05/08/1990US4924514 In a data processing system
05/08/1990US4924513 Apparatus and method for secure transmission of data over an unsecure transmission channel
05/03/1990WO1990004892A1 Returned-value blind signature systems
05/02/1990EP0366288A2 Buffered cyphering
05/01/1990US4922533 High security evolutive coding process and device for carrying out this process
05/01/1990US4922521 System for providing secure telecommunication access to a computer
04/1990
04/24/1990US4919545 Distributed security procedure for intelligent networks
04/24/1990CA1268258A1 Method and apparatus for synchronizing encrypting and decrypting systems
04/17/1990US4918728 Data cryptography operations using control vectors
04/11/1990EP0363081A2 Impulse pay per view programming distribution control system
04/11/1990CN1007573B Method of secured communications in telecommunications system
04/10/1990US4916738 Remote access terminal security
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