| Patents for H04L 9 - Arrangements for secret or secure communication (111,914) |
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| 11/03/1992 | US5161191 Encryption system for time division multiplexed networks |
| 11/03/1992 | US5161189 Method of communication |
| 11/03/1992 | US5161186 System for secure and private communication in a triple-connected network |
| 10/28/1992 | EP0510434A2 Apparatus and method for inhibiting analysis of a secure circuit |
| 10/27/1992 | US5159634 Cryptosystem for cellular telephony |
| 10/27/1992 | US5159633 Multimedia network system |
| 10/27/1992 | US5159632 Method and apparatus for public key exchange in a cryptographic system |
| 10/27/1992 | US5159629 Data protection by detection of intrusion into electronic assemblies |
| 10/20/1992 | US5157726 Document copy authentication |
| 10/15/1992 | WO1992017959A1 Dynamic encryption key selection for encrypted radio transmissions |
| 10/14/1992 | EP0508459A2 Digital transmission test system |
| 10/07/1992 | EP0407465A4 One-show blind signature systems |
| 10/06/1992 | US5153919 Service provision authentication protocol |
| 10/06/1992 | US5153581 Method for authentication by an external medium of a portable object such as a memory card coupled to this medium |
| 10/01/1992 | DE4138861A1 Authentication of electronic card users of communication system - assigning additional identification bits to distinguish between users with same card |
| 09/30/1992 | EP0506637A2 Cellular verification and validation system |
| 09/30/1992 | EP0506435A2 Independent external security module for a digitally upgradeable television signal decoder |
| 09/30/1992 | EP0506405A2 Image transmission method, and apparatus therefor |
| 09/30/1992 | EP0505831A2 Data protection method during data transfer in a taximeter |
| 09/29/1992 | WO1992017960A1 Security device for ring network |
| 09/29/1992 | WO1992017958A1 Secure computer interface |
| 09/29/1992 | US5151938 Security enhancement in a data processor through use of dynamic parameter authentication |
| 09/29/1992 | CA2106574A1 Secure computer interface |
| 09/29/1992 | CA2079479A1 Security device for ring network |
| 09/23/1992 | EP0505302A1 Authentication protocols in communication networks |
| 09/22/1992 | US5150411 Cryptographic system allowing encrypted communication between users with a secure mutual cipher key determined without user interaction |
| 09/22/1992 | US5150409 Device for the identification of messages |
| 09/22/1992 | US5150408 Key distribution communication system |
| 09/17/1992 | DE4107806A1 Secure reception appts. for confidential messages via thermal teleprinter - uses opaque but thermally conductive overlayer removable by person entitled to read imprint on sensitive underlayer |
| 09/16/1992 | EP0503119A1 Public key cryptographic system using elliptic curves over rings |
| 09/15/1992 | US5148485 Encrypton system for digital cellular communications |
| 09/15/1992 | US5148481 Transaction system security method and apparatus |
| 09/15/1992 | US5148479 Authentication protocols in communication networks |
| 09/15/1992 | US5148007 Method for generating random number for the encoded transmission of data |
| 09/10/1992 | DE4107266A1 Rapid encoding or decoding of large data quantities - by using chip card contg. two codes and using double encoding and decoding to preserve card security |
| 09/09/1992 | EP0502559A2 Method, identification device and verification device for identification and/or performing digital signature |
| 09/09/1992 | EP0502441A2 Key distribution system for distributing a cipher key between two subsystems by one-way communication |
| 09/08/1992 | US5146500 Public key cryptographic system using elliptic curves over rings |
| 09/08/1992 | US5146498 Remote key manipulations for over-the-air re-keying |
| 09/08/1992 | US5146497 Group rekey in a communication system |
| 09/02/1992 | EP0500749A1 Method for personal identification using proofs of legitimacy |
| 09/01/1992 | US5144667 Method of secure remote access |
| 09/01/1992 | US5144665 Cryptographic communication method and system |
| 09/01/1992 | US5144664 Apparatus and method for upgrading terminals to maintain a secure communication network |
| 08/26/1992 | EP0500245A2 Cipher communication system for transaction data |
| 08/26/1992 | EP0500244A2 Cipher communication method for transaction data |
| 08/26/1992 | EP0398931A4 Cryptographic method and apparatus with electronically redefinable algorithm |
| 08/25/1992 | US5142579 Public key cryptographic system and method |
| 08/25/1992 | US5142578 Hybrid public key algorithm/data encryption algorithm key distribution method based on control vectors |
| 08/25/1992 | US5142577 Method and apparatus for authenticating messages |
| 08/18/1992 | US5140634 Method and apparatus for authenticating accreditations and for authenticating and signing messages |
| 08/18/1992 | US5140317 Electronic security system |
| 08/18/1992 | CA1306549C Process and apparatus for the protection of secret elements in a network of encrypting devices with open key management |
| 08/12/1992 | EP0498343A2 Method for preventing use of illicitly modified data and circuit for implementing said method |
| 08/08/1992 | WO1992014318A1 Method, identification device and verification device for identification and/or performing digital signature |
| 08/08/1992 | CA2101322A1 Method, identification device and verification device for identification and/or performing digital signature |
| 08/04/1992 | US5136647 Method for secure time-stamping of digital documents |
| 08/04/1992 | US5136646 Digital document time-stamping with catenate certificate |
| 08/04/1992 | US5136643 Public/key date-time notary facility |
| 08/04/1992 | US5136642 Cryptographic communication method and cryptographic communication device |
| 07/29/1992 | EP0496459A1 Method and apparatus for access control and/or identification |
| 07/23/1992 | WO1992012485A1 Devices to (1) supply authenticated time and (2) time stamp and authenticate digital documents |
| 07/22/1992 | EP0495706A1 Pseudo-random byte generator |
| 07/19/1992 | WO1992013321A1 Method and apparatus for access control and/or identification |
| 07/19/1992 | CA2100576A1 Method and apparatus for access control and/or identification |
| 07/14/1992 | US5131040 Method for backing up and erasing encryption keys |
| 07/14/1992 | US5131039 Optionally moderated transaction systems |
| 07/14/1992 | US5131038 Portable authentification system |
| 07/07/1992 | US5128996 Multichannel data encryption device |
| 07/01/1992 | WO1992012584A1 Secure over-the-air registration of cordless telephones |
| 07/01/1992 | EP0492692A2 Remote accessing system |
| 06/23/1992 | US5124117 Cryptographic key distribution method and system |
| 06/17/1992 | EP0490618A1 Scrambling/descrambling circuit |
| 06/17/1992 | EP0489742A1 Encryption method |
| 06/09/1992 | US5121429 Digital signal processing |
| 06/09/1992 | US5120939 Databaseless security system |
| 06/03/1992 | EP0488325A2 Parallel scrambler used in sonet data transmission |
| 05/29/1992 | WO1992009161A1 Knowledge based system for document authentication |
| 05/29/1992 | WO1992009160A1 A secure system for activating personal computer software at remote locations |
| 05/26/1992 | US5117458 Secret information service system and method |
| 05/26/1992 | US5117457 Tamper resistant packaging for information protection in electronic circuitry |
| 05/20/1992 | EP0485887A2 Apparatus and method for upgrading terminals to maintain a secure communication network |
| 05/19/1992 | US5115467 Signal encryption apparatus for generating common and distinct keys |
| 05/19/1992 | US5115466 Communication network intended for secure transmission of speech and data |
| 05/13/1992 | EP0484862A2 Secure communication equipment and secure transmission system |
| 05/13/1992 | EP0484686A2 Secure communications system for remotely located computers |
| 05/13/1992 | EP0484603A1 Non-repudiation in computer networks |
| 05/12/1992 | US5113444 Random choice cipher system and method |
| 05/06/1992 | CN1016555B Data encryption key failure monitor |
| 05/05/1992 | US5111504 Information processing apparatus with replaceable security element |
| 04/29/1992 | EP0482371A2 Method and apparatus for controlling the use of a public key, based on the level of integrity for the key |
| 04/29/1992 | EP0482233A1 Cryptographic system allowing encrypted communication between users with a secure mutual cipher key determined without user interaction |
| 04/29/1992 | EP0482154A1 Device for converting a digital block and the use thereof. |
| 04/28/1992 | CA1299697C Method, apparatus and article for identification and signature |
| 04/22/1992 | EP0481121A1 Authentication for enciphered communication |
| 04/22/1992 | EP0413752A4 In-band controller |
| 04/22/1992 | CN1016391B Cordless telephone |
| 04/21/1992 | CA1299266C Method for routing secret keys to security modules and user cards in an information processing network |
| 04/20/1992 | WO1992007436A1 Method and apparatus for personal identification |
| 04/15/1992 | EP0480833A1 Radio telephone installation with secure prepayment service |