Patents for H04L 9 - Arrangements for secret or secure communication (111,914)
02/1999
02/23/1999US5875247 System for decrypting encrypted software
02/23/1999CA2153879C Method for providing mutual authentication of a user and a server on a network
02/23/1999CA2124891C Process for authentifying a portable object by an off-line terminal and portable object and terminal using said process
02/18/1999WO1999008418A1 Digital certificates containing multimedia data extensions
02/18/1999WO1999008415A2 System for generating electronic signatures in absolute security
02/18/1999WO1999008411A2 New operation for key insertion with folding
02/18/1999WO1999008230A2 Method for verifying the authenticity of a data medium
02/17/1999EP0897226A2 Digital audio data transmitting apparatus and method
02/17/1999EP0674824B1 Television program delivery system
02/17/1999EP0673580B1 An operation center for a television program packaging and delivery system
02/17/1999CN1208296A Equipment authenticator for authenticating equipment by means of bundle of plurality of secret keys
02/17/1999CN1208294A Data transmitting apparatus and data transmitting method
02/17/1999CN1208198A Method and apparatus for remotely controlling and monitoring the use of computer software
02/16/1999US5872849 Method for secure communication in a system
02/16/1999US5872848 Method and apparatus for witnessed authentication of electronic documents
02/16/1999US5872846 System and method for providing security in data communication systems
02/16/1999CA2137065C Method of protecting electronically published materials using cryptographic protocols
02/11/1999WO1999007151A1 Mechanism and apparatus for encapsulation of entitlement authorization in conditional access system
02/11/1999WO1999007150A1 Encryption devices for use in a conditional access system
02/11/1999WO1999007149A1 Source authentication of download information in a conditional access system
02/11/1999WO1999007148A1 Authorization of services in a conditional access system
02/11/1999WO1999007147A1 Method and apparatus for geographically limiting service in a conditional access system
02/11/1999WO1999007146A1 Representing entitlements to service in a conditional access system
02/11/1999WO1999007145A1 Verification of the source of program of information in a conditional access system
02/11/1999WO1999007104A1 Data security in multipoint publish/subscribe communications
02/11/1999WO1999007103A1 Methods and apparatus for enhanced cmea employing enhanced transformations
02/11/1999WO1998050875A3 Biometric certificates
02/11/1999WO1998048538A3 Method for secure key management using a biometric
02/11/1999DE19835399A1 ATM cell descrambling circuit
02/11/1999DE19734507A1 Verfahren zur Echtheitsprüfung eines Datenträgers A method for validating a data carrier
02/11/1999CA2616759A1 System and method for globally and securely accessing unified information in a computer network
02/11/1999CA2299505A1 Data security in multipoint publish/subscribe communications
02/11/1999CA2266665A1 Methods and apparatus for enhanced cmea employing enhanced transformations
02/10/1999EP0896453A2 Method for encrypting or decrypting a data stream
02/10/1999EP0896452A2 Data encrypting/decrypting conversion methods and apparatuses and data communication system adopting the same
02/10/1999EP0896451A2 Encryption apparatus and computer-readable recording medium containing program for realizing the same
02/10/1999CN1207533A Method of authorization in data communication systems
02/10/1999CN1207530A Computer system for protecting software and method for protecting software
02/09/1999US5870477 Enciphering/deciphering device and method, and encryption/decryption communication system
02/09/1999US5870476 Process for pledging data for a secure data exchange protocol
02/09/1999US5870475 Facilitating secure communications in a distribution network
02/09/1999US5870473 Electronic transfer system and method
02/09/1999US5870470 Method and apparatus for encrypting long blocks using a short-block encryption procedure
02/09/1999US5870468 Enhanced data privacy for portable computers
02/09/1999US5870354 Data recording and reproducing apparatus capable of detecting an input for controlling an output
02/09/1999US5869821 Credit inquiry service system and method
02/09/1999CA2186368C Methods for providing conditional access information to decoders in a packet-based multiplexed communications system
02/09/1999CA2118644C Personal identification encryptor and method
02/04/1999WO1999005819A1 Document or message security arrangements using a numerical hash function
02/04/1999WO1999005818A1 Split-key cryptographic system and method
02/04/1999WO1999005817A1 Methods and apparatus for enhanced cmea including a cmea iteration preceded and followed by transformations and employing an involuntary lookup
02/04/1999WO1999005816A1 System and method for authenticating signatures
02/04/1999WO1999005814A2 E-mail firewall with stored key encryption/decryption
02/04/1999WO1999005813A2 User authentication applet in a computer network
02/04/1999WO1999005663A1 Method of sharing key
02/04/1999WO1999005628A1 Electronic bill presentment and payment system which deters cheating by employing hashes and digital signatures
02/04/1999WO1998051112A3 Method and device to authenticate subscribers in a mobile radiotelephone systems
02/04/1999CA2266683A1 Methods and apparatus for enhanced cmea including a cmea iteration preceded and followed by transformations and employing an involuntary lookup
02/03/1999EP0894973A1 Engine start controlling apparatus
02/03/1999EP0894379A1 Method and system for hierarchical key access and recovery
02/03/1999EP0894322A1 Method and device for recording/ processing of authentic image and/or audio data
02/03/1999CN1206907A Information reproducing device,identifying device and information process system
02/02/1999US5867776 Receiver for receiving text-based multiplex broadcasts
02/02/1999US5867578 Adaptive multi-step digital signature system and method of operation thereof
02/02/1999US5867577 Method and apparatus for authenticating a data carrier intended to enable a transaction or access to a service or a location, and corresponding carrier
02/02/1999CA2152628C System and method for key distribution using quantum cryptography
02/02/1999CA2139081C Unified messaging system and method
02/02/1999CA2087615C Resynchronization of encryption systems upon handoff
01/1999
01/28/1999WO1999004587A1 Subscriber system with user station with removable data store
01/28/1999WO1999004583A1 Encrypted broadcast messages in a cellular communications system
01/28/1999WO1999004531A1 Method and apparatus for fast elliptical encryption with direct embedding
01/28/1999WO1999004530A1 File encryption with key recovery
01/28/1999WO1998048389A3 Method for mutual authentication between two units
01/28/1999WO1998047250A3 Apparatus and method for communicating between an intelligent agent and client computer process using disguised messages
01/28/1999CA2297059A1 Method and apparatus for fast elliptical encryption with direct embedding
01/27/1999EP0893895A2 Method for transmitting encrypted signals as well as transmitting and receiving apparatus therefore
01/27/1999EP0893796A2 Information reproducing apparatus, authenticating apparatus, and information processing system
01/27/1999CN1206296A Integrated circuit and method for secure data processing by means of this integrated circuit
01/27/1999CN1206272A Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
01/27/1999CN1206151A Computer system for protecting software and method for protecting software
01/26/1999US5864829 Network charge method and system
01/26/1999US5864667 Method for safe communications
01/26/1999US5864625 Methods and apparatus for secure optical communications links
01/26/1999US5864491 Apparatus and associated method for generating a pseudo random number
01/26/1999CA2135631C A method for loading and utilizing a key in a secure transmission device
01/26/1999CA2134974C A method for loading encryption keys into secure transmission devices
01/21/1999WO1999003285A2 Method and device for the mutual authentication of components in a network using the challenge-response method
01/21/1999WO1999003246A2 Methods and apparatus for enhanced security expansion of a secret key into a lookup table for improved security for wireless telephone messages
01/21/1999WO1999003079A1 Symmetrically-secured electronic communication system
01/21/1999WO1998047258A3 Bilateral authentication and encryption system
01/21/1999WO1998045980A3 Secure deterministic encryption key generator system and method
01/21/1999CA2258750A1 Methods and apparatus for enhanced security expansion of a secret key into a lookup table for improved security for wireless telephone messages
01/20/1999EP0892521A2 Method and apparatus for long term verification of digital signatures
01/20/1999EP0892520A2 Elliptic curve calculation apparatus capable of calculating multiples at high speed
01/20/1999EP0892519A2 System and method for secure data transmission
01/20/1999EP0891670A1 Method for providing a secure communication between two devices and application of this method
01/20/1999EP0891663A1 Transmitting messages over a network
01/20/1999EP0891661A1 Method and apparatus for data processing
01/20/1999EP0891611A1 Function access control system with encryption using a plurality of dynamic variables
01/20/1999EP0891610A1 Function access control system comprising a clock synchronisation device