| Patents for H04L 9 - Arrangements for secret or secure communication (111,914) |
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| 09/07/1988 | EP0281059A2 Data exchange system with a plurality of user terminals, each including an IC card reader |
| 09/07/1988 | EP0047285B1 A system for authenticating users and devices in on-line transaction networks |
| 08/25/1988 | WO1988006388A1 Communication port encryption/decryption method and apparatus |
| 08/24/1988 | CN87107370A Cryptographic system |
| 08/17/1988 | EP0278170A2 Cipher system |
| 08/10/1988 | EP0277247A1 System for generating a shared cryptographic key and a communication system using the shared cryptographic key |
| 08/10/1988 | EP0277186A1 Data encipherment |
| 08/09/1988 | US4763357 Method and apparatus for providing secure electronic communications |
| 08/02/1988 | USH510 Automatic authentication for voice transmissions |
| 07/26/1988 | US4760600 Cipher system |
| 07/26/1988 | US4760599 For converting an input data digit |
| 07/20/1988 | EP0167565B1 Cryptographic transmission system |
| 07/19/1988 | US4759064 Blind unanticipated signature systems |
| 07/19/1988 | US4759063 Blind signature systems |
| 07/12/1988 | US4757535 System for encrypted information transmission |
| 07/12/1988 | US4757534 Code protection using cryptography |
| 07/06/1988 | EP0273289A2 Bit synchronization method for a digital radiotelephone system |
| 06/28/1988 | US4754482 Method and apparatus for synchronizing encrypting and decrypting systems |
| 06/21/1988 | CA1238427A1 Code protection using cryptography |
| 06/21/1988 | CA1238420A1 Method and system for providing system security in a remote terminal environment |
| 06/14/1988 | US4751733 Substitution permutation enciphering device |
| 06/09/1988 | DE3640680A1 Video telephone |
| 06/08/1988 | EP0269862A1 Evolutive high-security coding method |
| 06/07/1988 | CA1237779A1 Transmitter/receiver for signals on the scramble unit |
| 05/31/1988 | US4748668 Method, apparatus and article for identification and signature |
| 05/26/1988 | EP0165294A4 Portable telephone id code transfer system. |
| 05/25/1988 | EP0268141A2 Remote access terminal security |
| 05/18/1988 | EP0267647A2 Enciphering/deciphering method and arrangement for performing the method |
| 05/17/1988 | CA1236885A1 Broadcasting system |
| 05/10/1988 | US4744104 Self-synchronizing scrambler |
| 05/04/1988 | EP0266044A2 Telecommunication security system and key memory module therefor |
| 05/04/1988 | EP0265477A1 Data conversion. |
| 04/27/1988 | EP0172877A4 Electronic transaction security system and method. |
| 04/21/1988 | WO1988002899A1 Monitoring card for generating very long secret codes |
| 04/19/1988 | US4739510 Direct broadcast satellite signal transmission system |
| 04/05/1988 | US4736423 Technique for reducing RSA Crypto variable storage |
| 04/05/1988 | CA1234920A1 Rom protection scheme |
| 03/31/1988 | DE3631797A1 Method and device for coding useful data |
| 03/24/1988 | WO1988002202A1 Metering retrieval of encrypted data stored in customer data retrieval terminal |
| 03/23/1988 | CN87106153A System for providing telecommunication connections with computer |
| 03/16/1988 | EP0259487A1 Method and apparatus for distributing and protecting encryption key codes |
| 03/15/1988 | US4731843 Method and device of increasing the execution speed of cipher feedback mode of the DES by an arbitrary multiplier |
| 03/15/1988 | US4731842 Security module for an electronic funds transfer system |
| 03/15/1988 | US4731841 Field initialized authentication system for protective security of electronic information networks |
| 03/15/1988 | US4731840 Method for encryption and transmission of digital keying data |
| 03/10/1988 | WO1988001818A1 Automated transaction system using microprocessor cards |
| 03/10/1988 | WO1988001817A1 Stations for communicating with encrypted messages via randomly selected circularly stored keys |
| 03/09/1988 | EP0258945A1 System for providing a telecommunication connection with a computer |
| 03/09/1988 | EP0258701A2 Secure communication system |
| 03/02/1988 | EP0257585A2 Key distribution method |
| 02/11/1988 | WO1988001120A1 System for generating a shared cryptographic key and a communication system using the shared cryptographic key |
| 02/11/1988 | WO1988001119A1 Data encipherment |
| 02/09/1988 | US4724541 For secure data transmissions |
| 02/09/1988 | US4724537 Method and apparatus for managing the use of an electronic lock for a mobile radio telephone |
| 02/09/1988 | CA1232684A1 Electronic transaction security system |
| 02/03/1988 | EP0254812A2 Cryptovariable initialisation in a public key network |
| 02/02/1988 | US4723284 Authentication system |
| 02/02/1988 | US4723283 Data transmission system |
| 01/28/1988 | WO1988000744A1 Process for diversifying a basic key and for authenticating a thus diversified key as having been prepared from a predetermined basic key, and system for its implementation |
| 01/28/1988 | WO1988000743A1 Process for authenticating external clearance data by a portable object such as a memory card |
| 01/28/1988 | WO1988000742A1 Process for certifying the authenticity of data exchanged between two devices locally or remotely connected by a transmission line |
| 01/27/1988 | EP0254565A2 Methods of and apparatus for forming identification data |
| 01/20/1988 | EP0253722A1 Method for diversifying a basic key and for authenticating a key worked out from a predetermined basic key and system for operation |
| 01/19/1988 | US4720859 Method and system for the mutual encyphered indentification between data communicating stations and stations for use with such method and system |
| 01/14/1988 | WO1988000416A1 Gateway system and method for interconnecting telephone calls with a digital voice protected radio network |
| 01/13/1988 | EP0252850A1 Method for certifying the authenticity of data exchanged between two devices connected locally or remotely by a transmission line |
| 01/13/1988 | EP0252849A1 Method for authenticating external authorization data by a portable object such as a memory card |
| 01/13/1988 | EP0252499A2 Method, apparatus and article for identification and signature |
| 12/23/1987 | EP0250309A1 Method for having a portable object, such as a memory card coupled to an external medium, be authenticated by this medium |
| 12/17/1987 | WO1987007796A1 Ciphering and deciphering device |
| 12/17/1987 | WO1987007743A1 Method for authentifying by means of an exterior medium a portable object such as a memory card coupled to said medium |
| 12/09/1987 | EP0248028A1 Method and apparatus for synchronizing encrypting and decrypting systems |
| 12/08/1987 | US4712238 Selective-subscription descrambling |
| 12/01/1987 | US4710921 Digital signal transmitting system |
| 11/25/1987 | EP0246823A2 Data communication systems and methods |
| 11/19/1987 | WO1987007101A1 Concealing reproduced relayed messages |
| 11/12/1987 | DE3615255A1 Arrangement for encryption and decryption of information |
| 11/05/1987 | WO1987006786A1 Data conversion |
| 11/05/1987 | DE3631992A1 Cryptography method and cryptography processor to carry out the method |
| 11/03/1987 | CA1228914A1 Enciphering key distribution system for subscription tv broadcast or catv system |
| 10/27/1987 | US4703503 Cryptographic system using pseudocomplements of vector Boolean algebra |
| 10/14/1987 | EP0241324A2 Data transmission method and device |
| 10/13/1987 | US4700387 Broadcast system for scrambled programming signals |
| 10/07/1987 | EP0239749A2 Cryptographic method and processor for carrying out this method |
| 10/07/1987 | EP0239638A1 Data processing system for a financial environment. |
| 10/06/1987 | US4698617 ROM Protection scheme |
| 09/30/1987 | EP0238537A1 System for preventing software piracy employing multi-encrypted keys and single decryption circuit modules. |
| 09/23/1987 | EP0237805A2 Method and arrangement for preventing the transmission of unciphered data |
| 09/16/1987 | CN86108509A Method of secured communications in telecommunications systems |
| 09/15/1987 | US4694492 Computer communications security control system |
| 09/15/1987 | US4694491 Cryptographic system using interchangeable key blocks and selectable key fragments |
| 09/08/1987 | CA1226635A1 Generation of identification keys |
| 09/01/1987 | US4691355 Interactive security control system for computer communications and the like |
| 09/01/1987 | US4691350 Security device for stored sensitive data |
| 08/27/1987 | WO1987005175A1 Method and apparatus for distributing and protecting encryption key codes |
| 08/26/1987 | EP0233682A2 Data network controller |
| 08/25/1987 | US4689606 Data encoding/decoding circuit |
| 08/18/1987 | US4688250 Apparatus and method for effecting a key change via a cryptographically protected link |
| 08/11/1987 | CA1225458A1 Descrambler subscriber key production system utilizing key seeds stored in descrambler |
| 08/04/1987 | US4685132 Bent sequence code generator |