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)
07/1995
07/26/1995EP0664627A1 Method of controlling secrecy of personal communication
07/25/1995US5436972 Method for preventing inadvertent betrayal by a trustee of escrowed digital secrets
07/20/1995WO1995019672A2 Cryptographic system and method with key escrow feature
07/20/1995WO1995019668A1 A method and system for audio information dissemination using various transmission modes
07/20/1995CA2176032A1 Cryptographic system and method with key escrow feature
07/19/1995EP0663650A2 Method for allocating a mobile record carrier to a fixed data station
07/19/1995EP0663124A1 Method and apparatus for efficient real-time authentication and encryption in a communication system
07/19/1995EP0663123A1 Random coding cipher system and method
07/18/1995US5434919 Compact endorsement signature systems
07/18/1995US5434918 Method for providing mutual authentication of a user and a server on a network
07/18/1995US5434917 Unforgeable identification device, identification device reader and method of identification
07/12/1995EP0662673A2 Anonymous credit card transactions
07/12/1995CN1105168A A method for point-to-point communications within secure communication systems
07/11/1995US5432853 Digital signal processing system
07/11/1995US5432852 Large provably fast and secure digital signature schemes based on secure hash functions
07/11/1995US5432849 In a data storage system
07/11/1995US5432848 DES encryption and decryption unit with error checking
07/05/1995EP0661846A1 Method for authenticating at least one identification device by a verification device using a zero-knowledge protocol
07/05/1995EP0661845A2 System and method for message authentication in a non-malleable public-key cryptosystem
07/05/1995EP0661844A2 Improvements to security in data processing systems
07/05/1995EP0661843A2 Device for implentation of DECT encryption algorithm with reduced current consumption
07/05/1995EP0635182A4 Electronic security system.
07/04/1995US5430767 Method and apparatus for deinterleaving digital transmission data
07/04/1995CA2029189C Ciphertext to plaintext communications system and method
06/1995
06/29/1995DE4344280A1 Authorising digital data from text and images
06/28/1995EP0660570A2 Method and apparatus for privacy of traffic behavior on a shared medium passive optical network
06/28/1995EP0660565A2 A method and network for communicating between a group of entities a text encrypted using an encryption key intrinsic to the group of entities in a network having a plurality of entities and a center
06/28/1995EP0660563A1 Apparatus for implementing a symmetric block ciphering algorithm without the complementation property
06/28/1995EP0660562A2 Clock frequency modulation for secure microprocessors
06/28/1995CA2386903A1 Communications apparatus
06/27/1995US5428686 Secure communication system having long-term keying variable
06/27/1995US5428684 Electronic cashless transaction system
06/22/1995WO1995016947A1 Method for providing mutual authentication of a user and a server on a network
06/21/1995EP0658996A1 Method and apparatus to secure the information of a data packet
06/21/1995EP0658672A2 Automobile engine starter
06/14/1995EP0658054A2 Apparatus and method for securing communication systems
06/14/1995EP0658022A2 Cryptographic key generation using sequential concatenation
06/14/1995EP0658021A1 A method and system for key distribution and authentication in a data communication network
06/14/1995EP0658020A1 A high security remote controlled actuating system
06/13/1995US5425103 Variable-key cryptography system
06/13/1995US5425101 System and method for simultaneously authorizing multiple virtual channels
06/08/1995WO1995015649A1 Electronic book selection and delivery system
06/08/1995WO1995015634A1 System and method for transmitting and receiving variable length authorization control for digital services
06/08/1995WO1995015633A1 A non-deterministic public key encryption system
06/08/1995WO1995015632A1 System and method for simultaneously authorizing multiple virtual channels
06/08/1995WO1995015629A1 Apparatus and method for encrypting communications without exchanging an encryption key
06/08/1995DE4341045A1 Digital data encoding system
06/08/1995CA2459529A1 Electronic book selection and delivery system
06/08/1995CA2459069A1 System and method for accumulating electronic book buy data
06/08/1995CA2459063A1 Electronic book menu system and method
06/08/1995CA2458379A1 Electronic book home system
06/08/1995CA2458355A1 Electronic book 4-component home subsystem
06/08/1995CA2458352A1 Electronic book 2-component home subsystem
06/08/1995CA2458258A1 Insertion of advertisements into on-demand electronic books
06/07/1995EP0656710A1 Method for generating DSA dignatures with low cost portable devices
06/07/1995EP0656709A2 Encryption device and apparatus for encryption/decryption based on the Montgomery method using efficient modular multiplication
06/07/1995EP0656708A1 System and method for the transmission and validation of an updated encryption key between two users
06/06/1995US5422953 Personal date/time notary device
06/06/1995CA2010345C Multilevel security apparatus and method with personal key
06/04/1995CA2134013A1 Exchange certificate for one way validation of information
06/01/1995WO1995014968A1 Data verification system and method
05/1995
05/30/1995USRE34954 Method for secure time-stamping of digital documents
05/30/1995US5420928 Pseudo-random generator
05/30/1995US5420927 Method for certifying public keys in a digital signature scheme
05/30/1995US5420926 Anonymous credit card transactions
05/30/1995US5420925 Rolling code encryption process for remote keyless entry system
05/30/1995US5420922 System for the safe transmission of messages
05/30/1995US5420866 Methods for providing conditional access information to decoders in a packet-based multiplexed communications system
05/30/1995US5420577 Method for providing communication between a distribution panel and console interface units
05/24/1995EP0654920A2 Method for the efficient updating of the hash value of a data file
05/24/1995EP0654919A2 Method for the authentication of one participant by another participant in an information transfer system according to the Challenge-Response principle
05/24/1995EP0654190A1 Programmable logic device having security elements located amongst configuration bit locations to prevent unauthorized reading
05/24/1995EP0570388B1 Method, identification device and verification device for identification and/or performing digital signature
05/16/1995US5416842 Method and apparatus for key-management scheme for use with internet protocols at site firewalls
05/16/1995US5416841 Cryptography system
05/11/1995WO1995012951A1 Relay apparatus, decoder and security broadcasting apparatus
05/11/1995WO1995012950A1 Relay apparatus
05/11/1995WO1995012941A1 Method for improved security of crc encryption system
05/11/1995WO1995012940A1 Method for automatic resynchronization of the transmitter/receiver pair in a remote keyless entry system
05/11/1995WO1995012733A1 Resynchronizing transmitters to receivers for secure vehicle entry using cryptography or rolling code
05/11/1995CA2309374A1 A message transmission system and method for a radiocommunication system
05/11/1995CA2309314A1 A method and system for indicating acknowledgement of a received message in a radio communication system
05/10/1995EP0652661A2 Cryptographic and scrambling system utilising a shared medium passive optical network
05/09/1995WO1995014283A2 Protected distribution protocol for keying and certificate material
05/09/1995US5414772 System for improving the digital signature algorithm
05/09/1995US5414771 System and method for the creation of random sequences and for the cryptographic protection of communications
05/04/1995DE4413678C1 Electronic registration method during data transmission
05/04/1995DE4411451C1 Vehicle security device with electronic use authorisation encoding
05/04/1995DE4336679A1 Method for authorising the entry of information into a communications and information system with the aid of an entry device
05/03/1995EP0651533A2 Method and apparatus for privacy and authentication in a mobile wireless network
05/03/1995EP0651357A1 Transaction processing system
05/03/1995CN1102265A 数据存储装置 Data storage means
05/02/1995US5412730 Encrypted data transmission system employing means for randomly altering the encryption keys
05/02/1995US5412729 Device and method for data encryption
05/02/1995US5412728 Device for security protection of digital data using elementary instructions data processing
05/02/1995US5412727 Anti-fraud voter registration and voting system using a data card
05/02/1995US5412726 Telecommunication installation with secure remote loading of prepayment means and corresponding remote loading process
05/02/1995US5412723 Mechanism for keeping a key secret from mobile eavesdroppers
05/02/1995US5412722 Encryption key management
05/02/1995US5412721 Method for loading and utilizing a key in a secure transmission device
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