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)
01/1994
01/05/1994EP0577000A1 Method for performing public-key cryptography
01/04/1994US5276738 Software data protection mechanism
01/04/1994US5276737 Fair cryptosystems and methods of use
01/04/1994US5276736 Optionally moderated transaction systems
01/04/1994US5276735 Data enclave and trusted path system
12/1993
12/29/1993EP0576224A2 Cryptographic key management apparatus and method
12/28/1993US5274707 Modular exponentiation and reduction device and method
12/23/1993WO1993026109A1 Apparatus for providing cryptographic support in a network
12/23/1993WO1993026103A1 Scrambler/descrambler system for data transmission
12/22/1993CN1023283C Synchronizing method in mobile radio system
12/22/1993CN1023282C Method of transferring data and system
12/21/1993US5272755 Secure communication network system for transmitting data
12/21/1993US5272754 Secure computer interface
12/21/1993US5272752 Authorization code lockout mechanism for preventing unauthorized reception of transmitted data
12/21/1993CA2010944C Controlled authorization of descrambling of scrambled programs broadcast between different jurisdictions
12/14/1993US5271061 Method and apparatus for public key exchange in a cryptographic system
12/09/1993WO1993025021A1 Continuous synchronous encryption and decryption in a wireless communications system throughout handoffs
12/08/1993EP0573248A1 One-time logon means and methods for distributed computing systems
12/08/1993EP0573245A2 Data authentication system
12/07/1993US5268963 System for encoding personalized identification for storage on memory storage devices
12/07/1993US5268962 Computer network with modified host-to-host encryption keys
12/03/1993CA2097484A1 Data communication system
11/1993
11/30/1993US5267316 Synchronous system for parallel data scrambling
11/30/1993US5267314 Secure transaction system and method utilized therein
11/30/1993US5266942 Security system with memory in transmitter and receiver
11/25/1993WO1993023939A1 A random choice cipher system and method
11/24/1993EP0570983A1 Hardware encryption apparatus using multiple linear transformations
11/24/1993EP0570388A1 Method, identification device and verification device for identification and/or performing digital signature.
11/24/1993CN1078835A Signal encryption method and system based on chaos theory
11/23/1993US5265164 Cryptographic facility environment backup/restore and replication in a public key cryptosystem
11/18/1993EP0570123A1 Computer system security method and apparatus having program authorization information data structures
11/18/1993EP0570103A2 A remote control security system
11/16/1993US5263085 Fast signature scheme based on sequentially linearized equations
11/09/1993US5261070 Method and apparatus for forming unique user identification data at remote terminal for secure transmission of data from host terminal
11/09/1993US5261003 Data communication system and method with data scrambling
11/09/1993US5261002 Method of issuance and revocation of certificates of authenticity used in public key networks and other systems
11/03/1993EP0567474A1 Method and apparatus for access control and/or identification.
11/02/1993US5259025 Method of verifying fake-proof video identification data
10/1993
10/28/1993WO1993021712A1 Electronic security system
10/28/1993WO1993021711A1 Process for detecting unauthorised reinjection of data sent by a transmitter to a receiver
10/28/1993WO1993021709A1 Multiple access coding for radio communications
10/28/1993WO1993021708A1 Verifying secret keys in a public-key cryptosystem
10/28/1993WO1993021581A2 Cryptographic data security in a secured computer system
10/28/1993DE4213141A1 Prodn. and transmission of encrypted functional commands - combining fixed data with variable code data modified by pseudo-random generators identically in transmission and reception
10/28/1993CA2118493A1 Fair cryptosystems and methods of use
10/28/1993CA2118246A1 Data enclave and trusted path system
10/27/1993EP0566811A1 Authentication method and system with a smartcard
10/26/1993US5257282 High speed code sequence generator
10/20/1993EP0566498A2 Digital signature device and process
10/20/1993EP0565528A1 Secure over-the-air registration of cordless telephones
10/14/1993WO1993020630A1 Power-of-two length pseudo-noise sequence generator with fast offset adjustment
10/14/1993WO1993020538A1 A cryptographic communications method and system
10/13/1993EP0565506A2 Multiple access coding for radio communication
10/13/1993EP0565314A2 Method and apparatus for creating, supporting, and using travelling programs
10/13/1993EP0565279A2 A universal authentication device for use over telephone lines
10/13/1993EP0564825A2 Method for identification of secret data messages in a uni-directional multipoint network using cyclic redundancy checks
10/12/1993US5253295 Process for authentication, by an outside medium, of a portable object connected to that medium via a transmission line and system for carrying out the process
10/12/1993US5253294 Secure transmission system
10/12/1993US5253293 Adaptive data ciphering/deciphering apparatuses and data communication system using these apparatuses
10/05/1993US5251258 Key distribution system for distributing a cipher key between two subsystems by one-way communication
09/1993
09/30/1993WO1993019549A1 Authorization code lockout mechanism for preventing unauthorized reception of transmitted data
09/29/1993EP0527886A4 Electronic security system
09/28/1993US5249230 Authentication system
09/28/1993US5249227 Method and apparatus of controlling processing devices during power transition
09/28/1993CA1322600C Authentication system and apparatus therefor
09/22/1993EP0500749A4 Method and system for personal identification using proofs of legitimacy
09/21/1993US5247577 Methods and apparatus for securely enabling features in highly integrated electronic circuits
09/21/1993US5247576 Key variable identification method
09/21/1993CA1322418C Data cryptography operations using control vectors
09/20/1993CA2090895A1 Cryptographic method for communication and electronic signatures
09/14/1993US5245661 Distributed sample scrambling system
09/14/1993US5245659 Constant ratio coding for multipath rejection and ECCM enhancement
09/14/1993US5245658 Domain-based encryption
09/14/1993US5245657 Verification method and apparatus
09/14/1993US5245656 Security method for private information delivery and filtering in public networks
09/14/1993US5245655 Method and a device for the protected transmission of data
09/09/1993DE4306819A1 Computation process between IC card and terminal - provides computation check without direct transmission between units to protect access to coding data to prevent unauthorised access
09/08/1993EP0559532A1 Encryption/decryption apparatus for data transmitted between telecommunication terminals over the public switched telephone network
09/08/1993EP0559205A1 Data processing system
09/07/1993US5243653 Method and apparatus for maintaining continuous synchronous encryption and decryption in a wireless communication system throughout a hand-off
09/07/1993US5243652 Location-sensitive remote database access control
09/07/1993US5243650 Method and apparatus for encryption/decryption of digital multisound in television
09/07/1993US5243649 Apparatus and method for quantum mechanical encryption for the transmission of secure communications
08/1993
08/31/1993US5241600 Vertification system for credit or bank card or the like
08/31/1993US5241599 Cryptographic protocol for secure communications
08/31/1993US5241598 Rolling key resynchronization in cellular verification and validation system
08/31/1993US5241597 Method for recovering from encryption key variable loss
08/31/1993US5241596 Facsimile apparatus, and method of controlling same
08/31/1993US5241595 Communication control section for facsimile equipment having a secure communication function
08/31/1993US5241594 One-time logon means and methods for distributed computing systems
08/31/1993CA1321835C Public key diversification method
08/31/1993CA1321819C Packet switching architecture providing encryption across packets
08/25/1993EP0556305A1 A secure system for activating personal computer software at remote locations
08/24/1993US5239584 Method and apparatus for encryption/authentication of data in energy metering applications
08/24/1993US5239581 Secret communication apparatus
08/24/1993US5239494 Random bit stream generator and method
08/24/1993US5239294 Method and apparatus for authenication and protection of subscribers in telecommunication systems
08/24/1993CA1321649C Method and system for authentication
08/19/1993WO1993016538A1 Devices for implementing public key cryptography and digital signatures
08/18/1993EP0555664A2 Data protection method in a passive optical telecommunication system
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