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)
12/1997
12/30/1997US5703907 Method for data compression
12/29/1997EP0500749B1 Method for personal identification using proofs of legitimacy
12/24/1997WO1997049213A1 Apparatus and method for secure commmunication based on channel characteristics
12/24/1997WO1997049211A1 Method and apparatus for data processing
12/24/1997CA2257645A1 Apparatus and method for secure commmunication based on channel characteristics
12/18/1997WO1997048208A1 Method and apparatus for providing anonymous data transfer in a communication system
12/18/1997WO1997048207A1 Device and method for dynamic encryption
12/18/1997WO1997048205A1 Method and apparatus of providing bit count integrity and synchronous data transfer over a channel which does not preserve synchronization
12/18/1997WO1997035403A3 Method and apparatus for secure document timestamping
12/18/1997DE19619299A1 Code key distribution method in fibre distributed data interface (FDDI) transmission network
12/17/1997EP0813325A2 A mechanism for enabling secure electronic transactions on the open internet
12/17/1997EP0813323A1 Method and system for securing a telephone link connecting two subscriber terminals
12/17/1997EP0813132A2 Support for trusted software distribution
12/17/1997EP0812500A1 Method and apparatus for providing variable rate data in a communications system using non-orthogonal overflow channels
12/17/1997CN1168041A Encryption/decryption method and encryption/decryption apparatus
12/16/1997US5699431 Method for efficient management of certificate revocation lists and update information
12/16/1997US5699429 Packet TV program component detector
12/16/1997US5699426 Video data bus communication system and method
12/16/1997CA2080452C Electronic-monetary system
12/11/1997WO1997047111A1 Method for the encryption of data transfer
12/11/1997WO1997047110A1 Public key cryptography method
12/11/1997WO1997047109A1 Process for cryptographic code management between a first computer unit and a second computer unit
12/11/1997WO1997047108A1 Process for group-based cryptographic code management between a first computer unit and group computer units
12/11/1997WO1997047106A1 A method and apparatus for using network address information to improve the performance of network transactions
12/11/1997WO1997046983A2 Method and device for loading input data into an algorithm during authentication
12/11/1997WO1997041661A3 Use of an encryption server for encrypting messages
12/11/1997DE19723659A1 Datenkommunikationssystem und Verfahren zur Chiffrierung zu übertragender Daten The data communication system and method for ciphering data to be transmitted
12/11/1997DE19622629A1 Cryptographic data packet transmission
12/11/1997DE19622533A1 Verfahren und Vorrichtung zum Laden von Inputdaten in einen Algorithmus bei der Authentikation Method and apparatus for loading input data into an algorithm during the authentication
12/11/1997CA2257907A1 Public key cryptography method
12/10/1997EP0812081A2 Charging system and charging method for electronic commerce
12/10/1997EP0789912A4 Method and apparatus for fingerprinting and authenticating various magnetic media
12/10/1997CN1167553A User authentication in a communications network
12/10/1997CN1167381A Identification signal reording method and device
12/10/1997CN1167304A Decipher method and electronic device thereof
12/09/1997US5696827 Secure cryptographic methods for electronic transfer of information
12/09/1997US5696826 Method and apparatus for encrypting and decrypting information using a digital chaos signal
12/09/1997US5696823 High-bandwidth encryption system with low-bandwidth cryptographic modules
12/09/1997US5696766 Apparatus and method of synchronizing a transmitter in a subscriber terminal of a wireless telecommunications system
12/04/1997WO1997045981A1 Secure communication
12/04/1997WO1997045979A2 Method and apparatus for initialization of cryptographic terminal
12/04/1997WO1997045817A1 System with and method of cryptographically protecting communications
12/04/1997DE19625635C1 Verschlüsselung und Entschlüsselung von Multimediadaten Encryption and decryption of the multimedia data
12/03/1997EP0810754A1 Secure communication
12/03/1997EP0810737A2 Method and apparatus for performing simultaneous data compression and encryption
12/03/1997EP0810563A2 Method and apparatus for implementing hierarchical electronic cash
12/03/1997EP0810559A2 Security access system
12/03/1997EP0809905A1 Encoding device
12/03/1997EP0809904A1 Apparatus for key management in a secure cryptographic facility
12/03/1997EP0809903A1 Electronic transfer system and method
12/03/1997CN1166899A Scrambled information transmitting and receiving method
12/02/1997US5694569 Method for protecting a volatile file using a single hash
12/02/1997US5694473 Decryption of retransmitted data in an encrypted communication system
11/1997
11/30/1997CA2206247A1 Secure communications
11/30/1997CA2177622A1 Cryptographic data integrity apparatus and method based on pseudo-random bit generators
11/27/1997WO1997044936A1 Method and apparatus for polarisation-insensitive quantum cryptography
11/27/1997WO1997044935A1 Cryptographic method and apparatus for non-linearly merging a data block and a key
11/27/1997WO1997044934A1 Decryption of retransmitted data in an encrypted communication system
11/27/1997WO1997044933A1 Decryption of retransmitted data in an encrypted communication system
11/27/1997WO1997044762A1 Communication system for managing safely and independently a plurality of applications by each user card and corresponding user card and management method
11/27/1997WO1997040603A3 Process and device for recording/processing authentic audio data
11/27/1997CA2255593A1 Communication system for managing safely and independently a plurality of applications by each user card and corresponding user card and management method
11/26/1997EP0809402A1 External security module for a television signal decoder
11/26/1997EP0809401A1 Method for reading a service card
11/26/1997EP0809379A2 Authentication apparatus according to the challenge-response principle
11/26/1997EP0809245A2 Improvements in or relating to security systems
11/26/1997EP0808972A2 Identification signal registering method and apparatus
11/26/1997EP0808535A1 Electronic negotiable documents
11/26/1997CN1166219A Method and appts. for providing identification
11/25/1997US5691928 Portable personal computer having removable security module
11/25/1997US5690692 Bio-active frequency generator and method
11/22/1997CA2204547A1 A method for providing full end to end secure transactional payment services and electronic fund transfer over any unsecured and unreliable network
11/20/1997WO1997043842A1 Apparatus and method for demonstrating and confirming the status of digital certificates and other data
11/20/1997WO1997043840A1 Improved detector for quantum cryptography
11/20/1997DE19622630C1 Verfahren zum gruppenbasierten kryptographischen Schlüsselmanagement zwischen einer ersten Computereinheit und Gruppencomputereinheiten A method for group-based cryptographic key management between a first computer unit and group computer units
11/19/1997EP0808041A2 Data processor for scrambling or descrambling supplementary data transmitted in a broadcast programme
11/19/1997EP0807929A1 Optical disk, bar code formation method for optical disk, optical disk reproduction apparatus, and marking method, laser marking method for optical disk, and method of optical disk production
11/19/1997EP0807911A2 Client/server protocol for proving authenticity
11/19/1997EP0807908A2 Digital signatures on a smartcard
11/19/1997EP0807347A2 A system for securing the flow of and selectively modifying packets in a computer network
11/19/1997EP0807346A1 Cd-prom
11/19/1997EP0489742B1 Encryption method
11/18/1997US5689799 Method and apparatus for routing confidential information
11/18/1997US5689567 Electronic signature method and apparatus
11/18/1997US5689563 Method and apparatus for efficient real-time authentication and encryption in a communication system
11/13/1997WO1997042706A1 Circuit arrangement for generating random bit sequences
11/13/1997WO1997042610A1 Method for performing a double-signature secure electronic transaction
11/13/1997DE19642371C1 Cryptographic key exchange method between computer units
11/12/1997CN1164912A Data conversion apparatus and data conversion method
11/11/1997US5687238 Small size product cipher apparatus
11/11/1997US5687237 Encryption key management system for an integrated circuit
11/11/1997US5687236 Steganographic method and device
11/11/1997US5687235 Certificate revocation performance optimization
11/11/1997US5686904 Secure self learning system
11/06/1997WO1997041707A1 Process of access restriction to a telecommunications network, telecommunications system and unit for such a system
11/06/1997WO1997041661A2 Use of an encryption server for encrypting messages
11/06/1997WO1997041539A1 A system and method for secure network electronic payment and credit collection
11/05/1997EP0805599A2 Video encoder/decoder with scrambling functions
11/05/1997EP0805575A2 Transponder
11/05/1997EP0804840A2 Apparatus and method for generating pseudorandom quantities based upon radio channel characteristics
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