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)
05/1993
05/01/1993CA2071771A1 Cryptographic facility environment backup/restore and replication in a public key cryptosystem
04/1993
04/28/1993EP0538946A1 Method for authenticating communication participants, and system for application of the method
04/28/1993EP0538888A1 Information processing method and system
04/21/1993EP0538216A1 Means for identification and exchange of encryption keys
04/21/1993EP0537971A2 Method for algorithm independent cryptographic key management
04/21/1993EP0537925A1 File-secure computer system
04/21/1993CN1020356C Simulative interference video signals generator
04/20/1993US5204903 Secure communication equipment and secure transmission system
04/20/1993US5204902 Cellular telephony authentication arrangement
04/20/1993US5204901 Public key cryptographic mechanism
04/15/1993WO1993007697A1 Method for personalisation of an active card
04/15/1993WO1993007696A1 Cryptographic communication method and apparatus
04/14/1993EP0536348A1 Security device for ring network.
04/14/1993CN1020324C In-band controller
04/13/1993US5202922 Data communication system
04/13/1993US5202921 Method and apparatus for authenticating users of a communication system to each other
04/13/1993US5202920 Facsimile equipment having a secure communication function
04/07/1993EP0535863A2 A cryptographic protocol for secure communications
04/07/1993EP0535357A2 Synchronous system for parallel data scrambling
04/07/1993CN1070779A Method of broardcast information and information processing device
04/06/1993US5201000 Method for generating public and private key pairs without using a passphrase
04/06/1993US5200999 In a data processing system
04/01/1993WO1993006672A1 Method and apparatus for public key exchange in a cryptographic system
03/1993
03/31/1993EP0534420A2 A method for generating public and private key pairs using a passphrase
03/31/1993EP0534419A2 Public key cryptosystem key management based on control vectors
03/31/1993CN1020233C Method and apparatus for encrypting and decrypting time domain signals
03/30/1993US5199074 Encryption system
03/30/1993US5199072 Method and apparatus for restricting access within a wireless local area network
03/30/1993US5199070 Method for generating a public key
03/30/1993US5199069 Automatic encryption selector
03/30/1993CA1315388C2 Cryptographic system using interchangeable key blocks and selectable key fragments
03/30/1993CA1315367C Management of cryptographic keys
03/28/1993CA2075254A1 Method for generating public and private key pairs without using a passphrase
03/24/1993EP0533507A1 An electronic bolt lock with enhanced security features
03/23/1993US5196840 Secure communications system for remotely located computers
03/23/1993CA1315032C Cordless telephone
03/23/1993CA1314956C Method and apparatus for controlling access to a communication system
03/21/1993CA2078652A1 Electronic bolt lock with enhanced security features
03/17/1993EP0532231A2 Service provision authentication protocol
03/17/1993EP0532228A2 A cryptosystem for cellular telephony
03/17/1993EP0532227A2 Cellular telephony authentication arrangement
03/17/1993EP0532226A2 Speech and control message encryption in cellular radio
03/17/1993EP0531784A2 Apparatus for encryption and decryption using split key
03/16/1993US5195136 Method and apparatus for data encryption or decryption
03/09/1993US5193115 For use to generate cryptograms
03/09/1993US5193114 Consumer oriented smart card system and authentication techniques
03/03/1993EP0529261A2 A hybrid public key algorithm/data encryption algorithm key distribution method based on control vectors
03/02/1993US5191614 Secure communication system
03/02/1993US5191613 Knowledge based system for document authentication
03/02/1993US5191610 Remote operating system having secure communication of encoded messages and automatic re-synchronization
03/02/1993US5191608 Method for the management of an application program loaded in a microcircuit medium
02/1993
02/24/1993EP0528730A1 Method for emitting and receiving personalized programs
02/24/1993EP0527886A1 Electronic security system
02/24/1993EP0439512A4 Returned-value blind signature systems
02/24/1993EP0418328A4 Card-computer moderated systems
02/23/1993US5189700 Devices to (1) supply authenticated time and (2) time stamp and authenticate digital documents
02/18/1993WO1993003562A1 Digital signature algorithm
02/18/1993WO1993003559A1 Nonlinear dynamic substitution devices and methods for block substitutions
02/09/1993US5185797 Encrypted trunked control channel system
02/09/1993US5185796 Encryption synchronization combined with encryption key identification
02/09/1993US5185795 Authentication of rekey messages in a communication system
02/03/1993EP0525968A2 Method and apparatus for cryptographic processing in a communication network, using a single cryptographic engine
02/03/1993EP0525921A2 Data transmission with repetition, one of the messages being cryptic
02/02/1993CA1313411C Personal identification number processing using control vectors
01/1993
01/27/1993EP0524253A1 System to prevent a scrambler from generating undesired symbols.
01/21/1993DE4125830C1 Data security appts. for local area network - exchanges data between network processors via encoding connection nodes w.r.t. coding classification
01/20/1993EP0374225B1 Method and device for authentication
01/13/1993EP0522473A2 Cryptographic identity verification method and apparatus
01/12/1993US5179591 Method for algorithm independent cryptographic key management
01/05/1993US5177791 Secure translation of usage-control values for cryptographic keys
01/05/1993US5177790 Method for generating a random number in a data processing system/and system for implementing the method
01/05/1993US5177485 Method of scrambling pal, secam and ntsc composite video signals and decoder of signals scrambled by this method
12/1992
12/29/1992US5175766 Signalling scheme for controlling data encryption device in an electronic fund transaction processing system
12/29/1992US5175765 Determining if transmissions over a network are reliable
12/22/1992US5173938 Key management system
12/22/1992CA1311850C Controlling access to network resources
12/16/1992EP0518365A2 method of implementing use of electronic cash
12/16/1992EP0518315A2 System and method for blockwise encryption of data
12/15/1992US5172414 Speech and control message encrypton in cellular radio
12/15/1992CA1311559C Method and system for personal identification
12/10/1992WO1992022159A1 Cryptographic block ciphering device not using a key
12/10/1992CA2110378A1 Cryptographic block ciphering device not using a key
12/09/1992EP0516898A1 Electronic notary
12/09/1992CN1066950A Independent external security module for digitally upgradeable television signal decoder
12/08/1992US5170431 Electronic bolt lock with enhanced security features
12/02/1992EP0309447B1 Ciphering and deciphering device
12/01/1992US5168523 Method of rotating a word constituted by binary elements and arrangement in which the said method is carried out
12/01/1992US5168521 Method of executing an irregular permutation of data protected by encryption
11/1992
11/24/1992US5166979 Data transmitting equipment
11/24/1992US5166978 Encoding system according to the so-called rsa method, by means of a microcontroller and arrangement implementing this system
11/17/1992US5164988 Data processing network
11/17/1992US5164986 Formation of rekey messages in a communication system
11/17/1992CA1310399C Ippv programming distribution control system
11/10/1992US5163098 System for preventing fraudulent use of credit card
11/10/1992US5163092 Parallel scrambler used in sonet data transmission
11/10/1992US5163091 Knowledge based system for document authentication (apparatus)
11/04/1992EP0511497A2 Secure communication network
11/04/1992EP0511483A2 Method and apparatus for authenticating users of a communication system to each other
11/04/1992EP0511420A1 A cryptographic system based on information difference
11/03/1992US5161244 Cryptographic system based on information difference
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