Patents for H04L 9 - Arrangements for secret or secure communication (111,914)
09/1994
09/21/1994EP0615673A1 Method and apparatus for data encryption and transmission
09/20/1994US5349643 System and method for secure initial program load for diskless workstations
09/20/1994US5349642 Method and apparatus for authentication of client server communication
09/20/1994US5349249 Programmable logic device having security elements located amongst configuration bit location to prevent unauthorized reading
09/15/1994WO1994021067A1 Two-way public key authentication and key agreement for low-cost terminals
09/15/1994WO1994021066A1 A method and apparatus for generating a digital message authentication code
09/15/1994WO1994021055A1 Method for data compression
09/15/1994CA2154575A1 Method for data compression
09/14/1994EP0615361A1 System and method for high speed encryption using multiple keystream generator
09/13/1994US5347650 Device for transforming a digital data sequence into a condensed digital data block using tables and logic operators
09/13/1994US5347581 Verification process for a communication system
09/13/1994US5347580 Authentication method and system with a smartcard
09/13/1994US5347579 Personal computer diary
09/07/1994EP0614147A2 Software data protection mechanism
09/06/1994US5345508 Method and apparatus for variable-overhead cached encryption
09/06/1994US5345507 In a communication system
09/06/1994US5345506 Mutual authentication/cipher key distribution system
09/01/1994WO1994019884A1 Personal computer diary
09/01/1994CA2156604A1 Personal computer diary
08/1994
08/31/1994EP0613105A1 Management process of secret keys between two IC-cards
08/30/1994US5343529 Transaction authentication using a centrally generated transaction identifier
08/30/1994CA2000252C Data encryption key failure monitor
08/30/1994CA1331790C Reproduction of secure keys by using distributed key generation data
08/30/1994CA1331789C Dynamic feedback arrangement scrambling technique keystream generator
08/24/1994EP0611506A1 Method, sender apparatus and receiver apparatus for modulo operation.
08/24/1994EP0477180B1 Key allocation in public communications systems taking account of security gradations
08/23/1994US5341428 Multiple cross-check document verification system
08/23/1994US5341427 Algorithm independent cryptographic key management apparatus
08/23/1994US5341426 Cryptographic key management apparatus and method
08/23/1994US5341425 Methods and apparatus for uniquely encrypting data at a plurality of data transmission sites for transmission to a reception site
08/23/1994US5341399 Digital transmission test signal generating circuit
08/23/1994CA1331642C Variants of the fiat-shamir identification and signature scheme
08/23/1994CA1331640C Document authentication system
08/18/1994DE4317380C1 Method for authentication between two electronic devices
08/17/1994EP0598036A4 Nonlinear dynamic substitution devices and methods for block substitutions.
08/17/1994CN1025704C For cellular communication system
08/16/1994US5339361 System and method for authenticating transmission and receipt of electronic information
08/09/1994US5337360 Method and apparatus for creating, supporting, and using travelling programs
08/09/1994US5337358 Apparatus for recording a transaction including authenticating an identification card
08/09/1994US5337357 Method of software distribution protection
08/04/1994WO1994017613A1 Random sum cipher system and method
08/03/1994EP0609143A1 System and method for secure facsimile transmission
08/03/1994EP0609142A1 Apparatus and method for secure facsimile transmission and a secure facsimile comprising such a device
08/03/1994CN1090454A Set top terminal for cable television delivery systems
08/03/1994CN1090453A Advanced set top terminal for cable television delivery systems
08/03/1994CN1090452A Network controller for cable television delivery systems
08/03/1994CN1090451A Digital cable headend for cable television delivery system
08/02/1994US5335281 Network controller and method
08/02/1994US5335280 Random sum cipher system and method
08/02/1994CA1331213C Public key/signature cryptosystem with enhanced digital signature certification
07/1994
07/28/1994CA2101198A1 Secure network method and apparatus
07/27/1994EP0541537B1 Method and apparatus for high precision weighted random pattern generation
07/26/1994US5333198 Digital interface circuit
07/26/1994US5333197 System to prevent a scrambler from generating undesired symbols
07/21/1994WO1994016509A1 A method and apparatus for generating a cipher stream
07/20/1994EP0606408A1 Method for personalisation of an active card
07/20/1994EP0606401A1 Apparatus and method for providing network security
07/12/1994US5329623 Apparatus for providing cryptographic support in a network
07/07/1994WO1994015423A1 A cryptographic method
07/07/1994WO1994015422A1 System and method for key distribution using quantum cryptography
07/07/1994WO1994015421A1 Method of extending the validity of a cryptographic certificate
07/07/1994WO1994015420A1 Apparatus and method for fault detection on redundant signal lines via encryption
07/07/1994CA2134559A1 Apparatus and method for fault detection on redundant signal lines via encryption
07/06/1994EP0605289A1 Method and apparatus for authentication using a zero knowledge protocol
07/06/1994EP0605047A1 Method for blockwise encryption/decryption using linear algebraic codes
07/06/1994EP0604911A2 Authentication and communication terminal and communication processing unit using the method
07/05/1994CA1330597C Encoding and decoding methods
06/1994
06/30/1994DE4243908A1 Digital signature signal generation
06/29/1994EP0604008A1 Cryptography system
06/29/1994EP0565528A4 Secure over-the-air registration of cordless telephones
06/28/1994US5325434 Method for authenticating communications participants, system for application of the method and first communications participant and second communication participant for application in the system
06/28/1994US5325433 Encryption communication system
06/28/1994US5325432 Method for updating encryption key information in communication units
06/23/1994WO1994014284A1 Reprogrammable terminal for suggesting programs offered on a television program delivery system
06/23/1994WO1994014283A1 Television program delivery system
06/23/1994WO1994014282A1 Set top terminal for cable television delivery systems
06/23/1994WO1994014281A1 An operation center for a television program packaging and delivery system
06/23/1994WO1994014280A1 Network controller for cable television delivery systems
06/23/1994WO1994014279A1 Digital cable headend for cable television delivery system
06/22/1994EP0602335A2 Cryptographic key management apparatus and method
06/22/1994EP0282570B1 Metering retrieval of encrypted data stored in customer data retrieval terminal
06/21/1994US5323464 In a data processing network
06/21/1994US5323146 Method for authenticating the user of a data station connected to a computer system
06/14/1994US5321754 Sequence synchronization
06/14/1994US5321753 Secure communication of static information by electronic means
06/14/1994US5321689 Multipath transmission system
06/14/1994US5321237 Device and method for authenticating electronic document transmissions
06/09/1994WO1994013107A1 Advanced set top terminal for cable television delivery systems
06/09/1994WO1994013081A1 Methods and apparatus for uniquely end encrypting data
06/09/1994WO1994013080A1 Method and apparatus for improved security within encrypted communication devices
06/09/1994WO1994013079A1 Method and apparatus of controlling processing devices during power transition
06/09/1994CA2345161A1 Advanced set top terminal for cable television delivery systems
06/08/1994EP0600646A2 Secure document and method and apparatus for producing and authenticating same
06/07/1994US5319712 Method and apparatus for providing cryptographic protection of a data stream in a communication system
06/07/1994US5319711 Wireless device for verifying identification
06/07/1994US5319710 Method and means for combining and managing personal verification and message authentication encrytions for network transmission
06/07/1994US5319705 Method and system for multimedia access control enablement
06/01/1994EP0599366A1 Communication network
05/1994
05/31/1994US5317639 Non-linear block substitution devices derived by constructive corruption
05/31/1994US5317638 Data processing system