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)
09/1998
09/29/1998US5815572 Video scrambling
09/29/1998US5815557 Homeowner key for an electronic real estate lockbox system
09/29/1998CA2141997C Public-key cryptographic apparatus handling ciphertext by public-key
09/24/1998WO1998042099A1 New methods for protecting vital information/commercial products from illegal usage/reproduction
09/23/1998EP0866616A1 Method of and apparatus for transmitting data
09/23/1998EP0866615A2 Data transmission and reception
09/23/1998EP0866613A1 Preventing fraudulent access in a conditional access system
09/23/1998EP0866611A1 Broadcast receiving system comprising a computer and a decoder
09/23/1998EP0866581A2 Methods and apparatus for secure optical communications links
09/23/1998CN1194072A Parameterized hash functions for access control
09/23/1998CN1194071A Code division multiple access with clipping function
09/22/1998US5812670 Traceable anonymous transactions
09/22/1998US5812669 Method and system for providing secure EDI over an open network
09/22/1998US5812667 Used in a communication service system
09/22/1998US5812666 Cryptographic key management and validation system
09/22/1998US5812664 Key distribution system
09/22/1998CA2146439C Method and apparatus for encryption having a feedback register with selectable taps
09/22/1998CA2146024C Method and apparatus for providing cryptographic protection of a data stream in a communication system
09/17/1998WO1998040986A1 Registration protocol
09/17/1998WO1998040985A1 User registration in a telecommunication network
09/17/1998WO1998040984A1 Method of and apparatus for encrypting signals for transmission
09/17/1998WO1998040853A1 Method for storing and operating sensitive information in a security module, and associated security module
09/17/1998WO1998029793A3 Method and apparatus for securing electronic games
09/17/1998DE19747827A1 Verfahren und Einrichtung zur Einbringung eines Dienstschlüssels in ein Endgerät Method and apparatus for introducing a service key in a terminal
09/17/1998DE19710413A1 Method of allocating authorisations for symmetrical encoding and decoding data in computer network
09/17/1998DE19708616A1 Elektronische Datenverarbeitungseinrichtung und -system Electronic data processing device and system
09/17/1998CA2255126A1 Method for storing and operating sensitive information in a security module, and associated security module
09/16/1998EP0865009A2 Electronic transaction processing system
09/16/1998EP0864959A2 Data management system
09/16/1998EP0864124A1 An improved pseudo-random generator
09/16/1998EP0755598B1 Computer network cryptographic key distribution system
09/16/1998CN1193449A Authentication and handover, methods and systems for radio personal communications
09/16/1998CN1193151A IC card system and method for making IC card system safety
09/15/1998US5809148 Decryption of retransmitted data in an encrypted communication system
09/15/1998US5809147 Device for cryptographically processing data packets and method of generating cryptographic processing data
09/15/1998US5809141 Method and apparatus for enabling mobile-to-mobile calls in a communication system
09/15/1998US5809140 Session key distribution using smart cards
09/15/1998US5809093 Apparatus and method of frame aligning information in a wireless telecommunications system
09/15/1998CA2115435C Method for personalisation of an active card
09/14/1998CA2232079A1 Computation in a permuted optimal normal basis
09/11/1998WO1998039878A1 An improved certification process
09/11/1998WO1998039877A1 Passwordless secure and efficient remote data update
09/11/1998WO1998039876A1 Cryptographic digital identity method
09/11/1998WO1998039875A2 Method for inserting a service key in a terminal and devices for implementing said method
09/11/1998WO1998039745A2 Portable data carrier and method for cryptographically secure use thereof with interchangeable keys
09/11/1998WO1998039701A1 Electronic data processing device and system
09/11/1998WO1998031120A3 A method and apparatus for a robust high-speed cryptosystem
09/09/1998EP0862824A1 Remote-auditing of computer generated outcomes using cryptographic and other protocols
09/09/1998EP0862823A1 Encryption key management
09/09/1998EP0556305B1 A secure system for activating personal computer software at remote locations
09/09/1998CN1192834A Multi-step digital signature method and system
09/09/1998CN1192635A Paging apparatus and paging method by password
09/09/1998CN1039762C Resynchronization of encryption system upon handoff
09/08/1998US5805992 Method for validating a communication link
09/08/1998US5805712 Apparatus and method for providing secured communications
09/08/1998US5805706 Apparatus and method for re-encrypting data without unsecured exposure of its non-encrypted format
09/08/1998US5805705 Synchronization of encryption/decryption keys in a data communication network
09/08/1998US5805703 Method and apparatus for digital signature authentication
09/08/1998US5805702 Method, apparatus, and system for transferring units of value
09/08/1998CA2096176C Variable length decoder
09/03/1998WO1998038767A1 Method and arrangement for computer assisted formation of a permutation to permute digital signals and method and arrangement to encrypt digital signals
09/03/1998WO1998038759A2 Generic user authentication for network computers
09/03/1998WO1998038567A1 Biometric input with encryption
09/03/1998DE19705350A1 Subscriber grouping method for mobile communications network
09/02/1998EP0862328A1 An operations center to be used in television program delivery
09/02/1998EP0862293A2 Information devices whitch select and use one out of a plurality of encryption utilization protocols for protecting copyrights of digital productions
09/02/1998EP0862149A2 IC card system and method for securing the system
09/02/1998EP0862105A2 Method of and apparatus for providing secure distributed directory services and public key infrastructure
09/02/1998EP0861541A1 Root key compromise recovery
09/02/1998EP0861540A1 Apparatus and method for encrypting mpeg packets
09/02/1998EP0861539A1 Efficient cryptographic hash functions and methods for amplifying the security of hash functions and pseudo-random functions
09/02/1998EP0861479A1 Method for determining an encryption key associated with an integrated circuit
09/02/1998EP0861461A2 Systems and methods for secure transaction management and electronic rights protection
09/01/1998US5802280 Method for tracing an electronic device
09/01/1998US5802175 Computer file backup encryption system and method
09/01/1998US5801750 For supplying information to a terminal
08/1998
08/28/1998CA2230304A1 Method of and apparatus for providing secure distributed directory services and public key infrastructure
08/27/1998WO1998037663A1 Method for authorization check
08/27/1998WO1998037662A1 Cryptographic system comprising a ciphering and deciphering system and a key escrow system and associated appliances and devices
08/27/1998WO1998037655A1 Method and system for processing electronic documents
08/27/1998WO1998037644A1 Compensating for fading in analog am radio signals
08/27/1998WO1998037525A1 Method for protecting a parent security key for authenticating user cards
08/27/1998WO1998026385A3 Reliance server for electronic transaction system
08/27/1998DE3740540C1 Data encoding and decoding arrangement
08/27/1998DE3344130C1 Code key transfer method
08/27/1998DE19707288A1 Cipher system for enciphering data
08/27/1998DE19705518A1 Manipulation protected electric device e.g. for volatile memory device (RAM)
08/27/1998CA2281726A1 Compensating for fading in analog am radio signals
08/27/1998CA2280952A1 Cryptographic system comprising a ciphering and deciphering system and a key escrow system and associated appliances and devices
08/26/1998EP0860064A2 Parameterized hash functions for access control
08/26/1998EP0472714B1 Process for authenticating a user using a data station
08/26/1998CN1191644A Electronic casino gaming system with improved play capacity, authentication and security
08/26/1998CN1191643A System and method for access control for data storage media
08/26/1998CN1191359A 'Number bill and number stamp' bill antiforging authenticating method
08/25/1998US5799090 Method of generating a pad from a file stored in computer memory
08/25/1998US5799089 System and apparatus for blockwise encryption/decryption of data
08/25/1998US5799088 Non-deterministic public key encrypton system
08/25/1998US5799086 Enhanced cryptographic system and method with key escrow feature
08/25/1998US5799083 Event verification system
08/25/1998US5799080 Semiconductor chip having identification/encryption code
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