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)
07/1986
07/09/1986EP0186981A2 Security module for an electronic funds transfer system
06/1986
06/24/1986US4596985 Radio-controlled lock method with automatic code change
06/24/1986US4596898 Method and apparatus for protecting stored and transmitted data from compromise or interception
05/1986
05/27/1986US4591660 Common control audio decryptor
05/22/1986WO1986003082A1 Communication system
05/20/1986US4590470 Communication system
05/06/1986CA1204163A1 Secure mobile radio telephony
04/1986
04/30/1986EP0179612A2 Cryptographic system for direct broadcast satellite network
04/29/1986CA1203848A1 Multi-layer encryption system for the broadcast of encrypted information
04/22/1986CA1203631A1 Detecting improper operation of a digital data processing apparatus
04/09/1986EP0176553A1 Method and apparatus for protecting stored and transmitted data from compromise or interception
03/1986
03/25/1986US4578532 Method and apparatus for code transmission
03/25/1986US4578531 Encryption system key distribution method and apparatus
03/18/1986US4577059 Decoding process and apparatus
03/05/1986EP0173647A2 Enciphering/deciphering method
03/05/1986EP0172877A1 Electronic transaction security system and method
02/1986
02/27/1986WO1986001323A1 Security system and method for remote terminal network
02/19/1986EP0172047A1 Method and system for enciphering and deciphering data transmitted between a transmitting apparatus and a receiving apparatus
01/1986
01/28/1986US4567600 Method and apparatus for maintaining the privacy of digital messages conveyed by public transmission
01/22/1986EP0168667A2 Secured message transfer system and method using updated session code
01/07/1986US4563546 Method for preventing "compromising radiation"
01/02/1986EP0166541A2 Communications network using an enciphering and deciphering device
12/1985
12/27/1985EP0165294A1 Portable telephone id code transfer system.
12/18/1985EP0164983A2 System for enabling descrambling on a selective-subscription basis in a subscriber communication network
12/18/1985EP0164676A1 Self-synchronizing scrambler
12/10/1985US4558175 Security system and method for securely communicating therein
12/04/1985EP0162962A2 Method and apparatus for monitoring the synchronization of cryptographic devices
12/03/1985CA1197588A1 Encryption system key distribution method and apparatus
11/1985
11/27/1985EP0162707A2 ROM protection scheme
11/27/1985EP0162581A1 Apparatus and method for security of electric and electronic devices
11/27/1985EP0162461A2 Digital signal transmitting system
11/26/1985US4555591 Integrated circuit devices for secure data encryption
11/12/1985US4553251 Method and system for synchronizing the coding and decoding during the transmission of digital coded data
10/1985
10/22/1985US4549308 Secure mobile radio telephony
10/22/1985US4549075 Method for certifying the origin of at least one item of information stored in the memory of a first electronic device and transmitted to a second electronic device, and system for carrying out the method
10/09/1985EP0157258A2 Signed document transmission system
10/01/1985US4544833 Process and apparatus for authenticating or certifying at least one item of information contained in a memory of a removable and portable electronic carrier, such as a card
09/1985
09/26/1985WO1985004299A1 Method and apparatus for protecting stored and transmitted data from compromise or interception
09/25/1985EP0155762A2 Descrambler subscriber key production system utilizing key seeds stored in descrambler
09/24/1985US4543559 Generator of encoding or decoding 8-bit bytes which can be used in a video system
09/24/1985CA1328501B Security System for SSTV Encryption
09/24/1985CA1194212A1 Security system for sstv encryption
09/18/1985EP0155054A2 Circuit for avoiding unauthorized access to a communication system which is secured by means of a user individual password
09/17/1985CA1193667A1 Method of and system for safeguarded transmission of digital signals
08/1985
08/29/1985WO1985003787A1 Electronic transaction security system
08/21/1985EP0152251A2 Broadcasting system
08/21/1985EP0151874A1 Prepayment metering system
08/21/1985EP0151714A2 Apparatus for securing secret information
08/13/1985CA1191916A1 Method and system for the mutual encyphered identification between data communicating stations and stations for use with such method and system
08/06/1985US4533948 CATV Communication system
07/1985
07/30/1985US4532638 Method and apparatus for the exponentiation of large binary numbers in a residue class modulo N, particularly for encoding and decoding digitally-represented messages
07/30/1985EP0047285A4 A system for authenticating users and devices in on-line transaction networks.
07/24/1985EP0148960A1 Security in data communication systems
07/23/1985US4531021 Two level encripting of RF signals
07/23/1985US4531020 Multi-layer encryption system for the broadcast of encrypted information
07/18/1985WO1985003182A1 Cryptographic transmission system
07/17/1985EP0148263A1 Probabilistic scrambler and method of probabilistic scrambling
07/10/1985EP0147716A2 Method and apparatus for the encipherable transmission of a series of binary information signals with authenticity check
07/02/1985US4527195 Apparatus for encoding and decoding information
07/02/1985CA1189925A1 Method and apparatus for forming secret codes
06/1985
06/26/1985EP0145737A1 Apparatus for transferring secret information from a central station to a terminal
06/20/1985WO1985002738A1 Portable telephone id code transfer system
06/18/1985CA1189207A1 Computer terminal security system
05/1985
05/28/1985US4520232 Communications system
05/08/1985EP0140388A2 Pocket terminal, method and system for secured banking transactions
05/02/1985EP0139313A2 Blind signature systems
04/1985
04/30/1985US4514852 Process for protected transmission of digital signals
04/30/1985US4514592 Cryptosystem
04/24/1985EP0138386A2 Identification card
03/1985
03/05/1985US4503287 Two-tiered communication security employing asymmetric session keys
02/1985
02/19/1985US4500750 System for providing data communication
02/05/1985US4498000 Security method and device for communicating confidential data via an intermediate stage
01/1985
01/29/1985CA1181830A1 Device for encrypting each input data bit by at least one keying bit decided by a code pattern and a bit pattern of a predetermined number of preceding encrypted bits
01/17/1985WO1985000259A1 Probabilistic scrambler and method of probabilistic scrambling
01/16/1985EP0131421A2 User authentication system
12/1984
12/11/1984US4488001 Intellectual properties protection device
12/04/1984US4486828 Data processing system providing data security through coded identification of accessing terminals
11/1984
11/27/1984CA1178677A1 Information communicating apparatus and method
11/22/1984WO1984004639A1 Apparatus for transferring secret information from a central station to a terminal
11/20/1984US4484027 Security system for SSTV encryption
11/20/1984US4484025 System for enciphering and deciphering data
11/08/1984WO1984004438A1 Arrangement for the encryption and decryption of a digital signal
11/07/1984EP0113730A4 Private communication system.
10/1984
10/31/1984EP0123360A1 Method of distributing and utilizing enciphering keys
10/02/1984US4475175 Computer communications control
09/1984
09/26/1984EP0119972A1 Apparatus for ciphering and deciphering digital messages
09/26/1984EP0119707A1 Automatic verification
09/19/1984EP0118995A1 Generation of identification keys
09/12/1984EP0117907A2 Method and module for testing electronic data
09/11/1984US4471164 Stream cipher operation using public key cryptosystem
09/05/1984EP0117357A2 Digital signal composing circuits
08/1984
08/28/1984CA1173538A1 Rsa public-key data encryption system
08/21/1984US4467139 Process and system for transmission of signed messages
08/14/1984US4465153 Method of coding and decoding messages
08/01/1984EP0114368A2 Data protection system
07/1984
07/25/1984EP0113730A1 Private communication system
07/24/1984CA1171490A1 Fast real-time public key cryptography
07/11/1984EP0112943A1 Data communication network
07/11/1984EP0112844A1 Method and apparatus for encrypted radio communications.
07/03/1984US4458109 Method and apparatus providing registered mail features in an electronic communication system
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