Patents for H04L 9 - Arrangements for secret or secure communication (111,914)
09/1997
09/16/1997US5668878 Secure cryptographic methods for electronic transfer of information
09/16/1997US5668877 Method and apparatus for stepping pair keys in a key-management scheme
09/16/1997US5668876 System for granting access to an electronic service
09/16/1997US5668875 Method and apparatus for authentication in a communication system
09/16/1997US5668872 Information processing method and system
09/16/1997CA2200037A1 A procedure and a system for indicating the time of completion of a cryptographic procedure
09/12/1997WO1997033404A1 Data transmission network billing method and system
09/12/1997WO1997033403A1 Improving security of packet-mode transmission in a mobile communication system
09/12/1997WO1997033373A1 Method , apparatus for electronic encoding and decoding
09/10/1997EP0794640A2 Virtual authentication network for secure processors
09/10/1997EP0794479A1 Method and apparatus for providing dynamic network file system client authentication
09/10/1997EP0794306A2 Electronic access control and security system
09/10/1997EP0793880A1 Data packet handling
09/10/1997EP0793823A1 Security apparatus and method
09/10/1997EP0598036B1 Nonlinear dynamic block substitution methods.
09/10/1997CN1159112A Encryption method, encryption apparatus, recording method, decoding method, decoding apparatus and recording medium
09/10/1997CN1159108A Encryption device and decryption device for information conveyed by asynchronous transfer mode cells
09/09/1997US5666420 Electronic communication method
09/09/1997US5666419 Encryption device and communication apparatus using same
09/09/1997US5666416 Certificate revocation system
09/09/1997US5666415 Method and apparatus for cryptographic authentication
09/09/1997US5666414 Guaranteed partial key-escrow
09/09/1997CA2197153A1 Electronic access control and security system
09/04/1997WO1997032417A1 Process for generating a check word for a bit sequence for verifying the integrity and authenticity of the bit sequence
09/03/1997EP0793387A2 Tv mail system
09/03/1997EP0793367A2 Key distribution system and method
09/03/1997EP0793366A2 Method and apparatus for encrypting data
09/03/1997EP0719370B1 Resynchronizing transmitters to receivers for secure vehicle entry using cryptography or rolling code
09/03/1997EP0695485A4 Fair cryptosystems and methods of use
09/03/1997CN1158461A Data acquiring apparatus
09/03/1997CN1158453A High effective electronic data protection method
09/02/1997US5664017 Internationally regulated system for one to one cryptographic communications with national sovereignty without key escrow
09/02/1997US5664016 Method of building fast MACS from hash functions
09/02/1997US5663990 Wireless telephone distribution system with time and space diversity transmission
09/02/1997US5663896 Broadcast key distribution apparatus and method using Chinese Remainder
08/1997
08/28/1997WO1997031450A1 Key replacement in a public key cryptosystem
08/28/1997WO1997031449A1 Communication method using common cryptographic key
08/28/1997WO1997031448A1 Communication method using common key
08/28/1997WO1997016902A3 Unified end-to-end security methods and systems for operating on insecure networks
08/28/1997DE19607017A1 Remote control device for accessing motor vehicle or controlling accessory device, such as for opening/closing garage doors
08/28/1997CA2247509A1 Communication method using common cryptographic key
08/28/1997CA2247478A1 Communication method using common key
08/27/1997EP0792045A2 Method and apparatus for authentication using digital signatures
08/27/1997EP0792044A2 Device and method for authenticating user's access rights to resources according to the Challenge-Response principle
08/27/1997EP0792043A2 Method of sharing cryptokey
08/27/1997EP0792042A2 Method of effecting communications using common cryptokey
08/27/1997EP0792041A2 Method and apparatus for block encryption
08/27/1997CN1158203A System for processing a video signal via series-connected high speed signal processing smart cards
08/27/1997CN1158202A Safety improved access control system using intelligence card
08/27/1997CN1158195A System and method for key escrow and data escrow encryption
08/26/1997US5661807 Authentication system using one-time passwords
08/26/1997US5661806 Process of combined authentication of a telecommunication terminal and of a user module
08/26/1997US5661805 Signature verification apparatus capable of obtaining information required for a document recipient by using an apparatus's verification key alone
08/26/1997US5661804 Trainable transceiver capable of learning variable codes
08/26/1997US5661803 Method of token verification in a key management system
08/21/1997WO1997030534A1 Reception apparatus for authenticated access to coded broadcast signals
08/21/1997WO1997030424A1 Method for server-authorised service access from portable electronic microcircuit devices such as smart cards
08/21/1997CA2246301A1 Method for server-authorised service access from portable electronic microcircuit devices such as smart cards
08/20/1997EP0790595A1 Data conversion apparatus and data conversion method
08/20/1997EP0789912A1 Method and apparatus for fingerprinting and authenticating various magnetic media
08/20/1997EP0641505A4 Continuous synchronous encryption and decryption in a wireless communications system throughout handoffs.
08/20/1997EP0637413A4 Verifying secret keys in a public-key cryptosystem.
08/20/1997CN1157677A Biometric controlled key generation
08/19/1997US5659618 Multi-size cryptographic key system
08/19/1997US5659617 Method for providing location certificates
08/19/1997US5659616 Method for securely using digital signatures in a commercial cryptographic system
08/19/1997US5659615 Secure satellite receive-only local area network with address filter
08/19/1997US5659613 Method and apparatus for copy protection for various recording media using a video finger print
08/13/1997EP0788688A1 Method and apparatus for secure identification of a mobile user in a communication network
08/13/1997EP0788641A1 Method for enabling a transaction between a terminal user and a server
08/13/1997CN1157071A Method and apparatus for authentication in communication system
08/13/1997CN1156931A Asynchronous multiport controlling method in single system of remote security administration system
08/13/1997CN1035652C Method and apparatus for scrambling and descrampling of video signals
08/12/1997US5657389 Positive identification system and method
08/12/1997US5657388 Method and apparatus for utilizing a token for resource access
08/07/1997WO1997028630A2 System and method for interfacing multiple electronic devices
08/07/1997WO1997016779A3 Input security and transactions unit and process for input security and transactions involving digital information
08/07/1997DE19604150A1 Transmission data integrity and authentication method
08/06/1997EP0788066A2 Electronic-monetary System
08/06/1997EP0418328B1 Card-computer moderated systems
08/06/1997CN1156531A User authentication method and apparatus
08/06/1997CN1156293A Communication apparatus
08/05/1997US5655021 Method for checking data sequences
08/05/1997US5654696 Method for transferring auxillary data using components of a secure entry system
07/1997
07/31/1997WO1997027716A1 Management of authentication keys in a mobile communication system
07/31/1997WO1997027688A1 Asymmetrical cryptographic communication method and portable object therefor
07/30/1997EP0786881A2 Method and system for synchronisation of encryption/decryption keys in a data communications network using marker packets
07/30/1997EP0786178A1 Secret-key certificates
07/30/1997CN1155799A Generation of cryptographic signatures using hash keys
07/30/1997CN1155798A Data network security system and method
07/30/1997CN1155797A 通信方法和装置 Communication method and apparatus
07/29/1997US5652796 Data encryption control system
07/29/1997US5652662 Communications apparatus wherein transmission of ciphered data is dependent upon available memory
07/24/1997WO1997026733A1 Method for an encrypted digital watermark
07/24/1997WO1997026730A1 Secure satellite receive-only local area network with address filter
07/24/1997WO1997026728A2 Traceable anonymous transactions
07/24/1997WO1997026727A2 Microchip partly or entirely surrounded by opaque sheathing
07/23/1997EP0785693A1 Protocol for local routing of incoming calls from the public switched telephone network to a cellular network
07/23/1997EP0785656A2 Data acquiring apparatus
07/23/1997EP0785518A2 Electronic-monetary system