| Patents for H04L 9 - Arrangements for secret or secure communication (111,914) |
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| 02/11/1998 | CN1173260A Unified messaging and long distance communication system |
| 02/11/1998 | CN1173256A 网络安全装置 Network security device |
| 02/10/1998 | US5717760 Message protection system and method |
| 02/10/1998 | US5717759 Method for certifying public keys in a digital signature scheme |
| 02/10/1998 | US5717758 Witness-based certificate revocation system |
| 02/10/1998 | US5717757 Certificate issue lists |
| 02/10/1998 | US5717756 System and method for providing masquerade protection in a computer network using hardware and timestamp-specific single use keys |
| 02/05/1998 | WO1998005143A1 Cryptographic key recovery system |
| 02/05/1998 | WO1998005142A1 Multi matrix encryption for private transmission of data |
| 02/05/1998 | WO1998005132A2 Method and apparatus for enabling mobile-to-mobile calls in a communication system |
| 02/05/1998 | WO1998004966A1 System for secure data storage on cd-rom |
| 02/05/1998 | CA2261694A1 Multi matrix encryption for private transmission of data |
| 02/04/1998 | EP0822720A1 Conditional access system using messages with multiple encryption keys |
| 02/04/1998 | EP0822718A1 Network controller for cable television delivery systems |
| 02/04/1998 | EP0821853A1 Method and apparatus for high speed block ciphering of packet data |
| 02/04/1998 | EP0681768A4 A method and apparatus for generating a cipher stream. |
| 02/04/1998 | CN1172386A Method of and apparatus for generating pseudorandom noise sequence |
| 02/03/1998 | US5715403 System for controlling the distribution and use of digital works having attached usage rights where the usage rights are defined by a usage rights grammar |
| 02/03/1998 | US5715399 Secure method and system for communicating a list of credit card numbers over a non-secure network |
| 02/03/1998 | US5715390 Method and apparatus for providing upgrades in electricity meters |
| 02/03/1998 | US5715332 Image transmission method, and apparatus therefor |
| 02/03/1998 | US5715174 Security apparatus and method |
| 02/03/1998 | US5715164 System and method for communications with postage meters |
| 01/29/1998 | WO1998003955A1 Digital data shuffling/deshuffling system |
| 01/29/1998 | DE19630354A1 Symmetric matrix encryption with variable key generation coding process for digital data transmission |
| 01/29/1998 | CA2593362A1 Personal information security and exchange tool |
| 01/28/1998 | EP0821516A2 Communication terminal device |
| 01/28/1998 | EP0821508A2 Cryptographic unit touch point logic |
| 01/28/1998 | EP0821504A2 Method and system for depositing private key used in RSA cryptosystem |
| 01/28/1998 | EP0821326A2 Method and system for the secure transmission and storage of protectable information |
| 01/28/1998 | EP0820670A1 Computer-assisted method for the exchange of cryptographic keys between a user computer unit (u) and network computer unit (n) |
| 01/28/1998 | CN1171692A Communication terminal device |
| 01/28/1998 | CN1171682A Data encrypting method and equipment |
| 01/27/1998 | US5712914 Method of communicating information |
| 01/27/1998 | US5712913 Limited-traceability systems |
| 01/27/1998 | US5712912 Method and apparatus for securely handling a personal identification number or cryptographic key using biometric techniques |
| 01/27/1998 | US5712800 Broadcast key distribution apparatus and method using chinese remainder |
| 01/27/1998 | US5712512 Method of resetting a central lock system of a motor vehicle having a remote operator |
| 01/22/1998 | WO1998003026A1 Enhanced short message and method for synchronising and ensuring security of enhanced short messages exchanged in a cellular radio communication system |
| 01/22/1998 | WO1998003014A1 Detecting a watermark embedded in an information signal |
| 01/22/1998 | WO1998002991A1 Key distribution process between two units in an isdn/internet connection |
| 01/22/1998 | WO1998002990A1 Spiral scrambling |
| 01/22/1998 | WO1998002968A2 Apparatus and method for electronic document certification and verification |
| 01/22/1998 | WO1998002864A1 Optimization methods for the insertion, protection and detection of digital watermarks in digitized data |
| 01/22/1998 | CA2259287A1 Enhanced short message and method for synchronising and ensuring security of enhanced short messages exchanged in a cellular radio communication system |
| 01/21/1998 | EP0820193A2 Operating method for a service access apparatus |
| 01/21/1998 | EP0820169A2 System for information diversification in a distribution network for products or services |
| 01/21/1998 | EP0819346A1 Digital document authentication system for providing a certificate which authenticates and uniquely identifies a document |
| 01/21/1998 | EP0819345A1 Electronic funds transfer instruments |
| 01/21/1998 | EP0717897B1 System and method for quantum cryptography |
| 01/21/1998 | CN1171015A Conditional access system and smartcard allowing such access |
| 01/21/1998 | CN1170995A Encrypting device for guaranteeing communication safety between apparatus |
| 01/21/1998 | CN1170994A Method for encryption of data transfer |
| 01/20/1998 | US5710816 Method and apparatus for ensuring receipt of voicemail messages |
| 01/20/1998 | US5710814 Cryptographic unit touch point logic |
| 01/20/1998 | CA2133743C Electronic security system |
| 01/15/1998 | WO1998001975A1 Method, apparatus, and system for wireless communication and information storing medium |
| 01/15/1998 | WO1998001833A1 System for securely transporting objects in a tamper-proof container, wherein at least one recipient station is mobile and portable |
| 01/14/1998 | EP0818762A2 Coding device, decoding device and IC circuit |
| 01/14/1998 | EP0818757A2 Universal Authentication device for use over telephone lines |
| 01/14/1998 | EP0818095A1 System for ensuring that the blinding of secret-key certificates is restricted, even if the issuing protocol is performed in parallel mode |
| 01/14/1998 | EP0818094A1 Asymmetrical cryptographic communication method and portable object therefor |
| 01/14/1998 | EP0818007A1 Method and means for interconnecting different security level networks |
| 01/13/1998 | US5708715 Integrated circuit device with function usage control |
| 01/13/1998 | US5708714 Method for sharing secret information and performing certification in a communication system that has a plurality of information processing apparatuses |
| 01/13/1998 | US5708712 Vehicle security device with electronic use authorization coding |
| 01/13/1998 | US5708711 Method for selecting a preferred time interval in which to update a communication unit parameter |
| 01/13/1998 | US5708710 Method and apparatus for authentication in a communication system |
| 01/13/1998 | US5708709 Program usage management system |
| 01/12/1998 | CA2207651A1 Information terminal |
| 01/12/1998 | CA2207519A1 Universal authentication device for use over telephone lines |
| 01/08/1998 | WO1998000972A1 Method and apparatus for operating a transactional server in a proprietary database environment |
| 01/08/1998 | WO1998000950A1 Key distribution method and key distribution system in broadcast cipher communication |
| 01/08/1998 | WO1998000949A1 Methods for generating variable s-boxes from arbitrary keys of arbitrary length |
| 01/08/1998 | WO1998000947A1 Centralized secure communications system |
| 01/08/1998 | WO1998000770A2 Encryption enhancement system |
| 01/07/1998 | EP0817518A2 Method for controlled access to a secured system |
| 01/07/1998 | EP0817485A1 Conditional access system and smartcard allowing such access |
| 01/07/1998 | EP0817420A2 Authentication method, communication method, and information processing apparatus |
| 01/07/1998 | EP0817185A2 Enciphering method, deciphering method, recording and reproducing method, deciphering device, deciphering unit device, recording medium, recording-medium manufacturing method, and key control method |
| 01/07/1998 | EP0816967A2 Secure file system |
| 01/07/1998 | EP0815671A1 Simultaneous electronic transactions |
| 01/07/1998 | EP0815670A1 Multi-purpose transaction card system |
| 01/07/1998 | EP0815669A1 Secure satellite receive-only local area network with address filter |
| 01/07/1998 | EP0667998A4 Method and apparatus for authentication of client server communication. |
| 01/07/1998 | EP0549672B1 Sequence synchronisation |
| 01/07/1998 | CN1169805A Laser magnetic disc read-only storage device capable of programmed |
| 01/06/1998 | US5706349 Method for managing communications |
| 01/06/1998 | US5706348 Use of marker packets for synchronization of encryption/decryption keys in a data communication network |
| 01/06/1998 | US5706347 Method and system for authenticating a computer network node |
| 01/06/1998 | US5705991 In a method of operating a secure entry system |
| 12/31/1997 | WO1997050248A1 Encryption and decryption of multi-media data |
| 12/31/1997 | WO1997050207A1 Improvements in, or relating to, internet communication systems |
| 12/31/1997 | WO1997050205A1 Digitally signing agreements from remotely located nodes |
| 12/31/1997 | WO1997050036A1 Computationally efficient method for trusted and dynamic digital objects dissemination |
| 12/31/1997 | CN1169071A Accounting device, communication apparatus, and communication system |
| 12/30/1997 | US5703952 Method and apparatus for generating a cipher stream |
| 12/30/1997 | US5703951 System and method for access data control |
| 12/30/1997 | US5703950 Method and apparatus for controlling country specific frequency allocation |
| 12/30/1997 | US5703948 Protected communication method and system |