Patents
Sitemap › G06 - Computing; Calculating; Counting › G06F - Electric digital data processing › G06F 21 - Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
Patents for G06F 21 - Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity (119,294)
03/1991
03/20/1991EP0253885A4 Solid state key for controlling access to computer systems and to computer software and/or for secure communications
03/19/1991US5001753 Crytographic system and process and its application
03/19/1991US5001752 Public/key date-time notary facility
03/16/1991CA2025518A1 System and method for reducing timing channels in digital data processing system
03/14/1991CA2000594A1 Method and apparatus for protecting computer software using a presettable counter in combination with an additional function
03/13/1991WO1991004533A1 Security management method in a decentralized data base system
03/13/1991CN1049923A Apparatus and method for preventing unauthorized access to bios in personal computer system
03/12/1991US4999806 Software distribution system
03/12/1991US4999621 Tone code identification system
03/12/1991CA1281418C Billing system for computer software
03/07/1991WO1991003011A1 Electronic memories
03/05/1991US4998279 Method and apparatus for personal verification utilizing nonpredictable codes and biocharacteristics
02/1991
02/28/1991DE3927236A1 Optional computer software copying method - transferring stored, selected software to removable medium without relinquishing control of copying method
02/27/1991EP0413822A1 Data processing system using ic card
02/26/1991CA1280830C Process and a device for the protection of software
02/20/1991EP0413350A2 Illegal copy prevention apparatus
02/19/1991US4995112 Security system
02/19/1991US4995082 Method for identifying subscribers and for generating and verifying electronic signatures in a data exchange system
02/13/1991EP0412251A2 Write-once-read-once batteryless authentication token
02/12/1991US4993068 Unforgeable personal identification system
02/07/1991CA2016009A1 Method and apparatus for externally defining the operational mode of a digital radio transceiver
02/06/1991EP0411255A2 Memory system
02/06/1991EP0411185A1 Data input device
02/05/1991US4991205 Personal identification system and method
02/05/1991CA1279931C System for accounting for postage expended by a postage meter having data security during editing of accounts
01/1991
01/30/1991EP0410869A1 Method for processing data by compression and permutation for microcircuit card
01/29/1991US4988855 Portable electronic apparatus
01/23/1991EP0409701A1 Hard-wired micro-circuit card and transaction method between a respective hard-wired micro-circuit card and a terminal
01/23/1991EP0409397A2 Distributed data processing system
01/23/1991EP0409284A2 Data processor
01/23/1991EP0408689A1 System and method of protecting integrity of computer data and software
01/22/1991US4987595 Secure cryptographic processor arrangement
01/16/1991EP0408456A1 Microcircuit card protected against intrusion
01/15/1991US4985695 Computer security device
01/15/1991US4985615 Portable electronic apparatus having key data for limiting memory access
01/11/1991WO1991001065A1 Layered protection system for computer's hard disk
01/11/1991CA2055606A1 Layered protection system for computer's hard disk
01/10/1991DE4018688A1 Protection of data held on shaft card against external reading - has protective layer that can be periodically checked for attempt to read
01/09/1991EP0407060A2 Method of providing mandatory secrecy and integrity file security in a computer system
01/08/1991US4984272 Secure file handling in a computer operating system
01/02/1991EP0277152A4 One-time programmable data security system for programmable logic device
01/02/1991CN1048271A Method and apparatus for remotely controlling and monitoring use of computer software
01/02/1991CN1011108B Method for providing telecommunication connections with computer
12/1990
12/25/1990US4980782 Software protection and identification system
12/19/1990EP0402961A2 Portable electronic memorandum device
12/19/1990EP0402759A2 Portable electronic device having versatile program storage
12/19/1990EP0402758A2 Portable electronic device having versatile program storage
12/15/1990WO1990016126A1 Controller prohibiting data communication until user is verified
12/12/1990EP0402210A1 Method for verifying the integrity of software or data and system for implementing this method
12/12/1990EP0401553A2 Method for blanking a screen of a display device of an electronic data processing system
12/12/1990EP0401258A1 Document marking system.
12/11/1990US4977594 Database usage metering and protection system and method
12/07/1990WO1990015384A1 Method of checking the integrity of software or data, and system for implementing said method
12/05/1990EP0400475A2 Storage management system for memory card using memory allocation table
12/05/1990EP0400233A1 Method for maintaining data processing system security
12/04/1990US4975950 System and method of protecting integrity of computer data and software
12/04/1990US4975898 Method and apparatus for preventing copying of an optical disk
12/04/1990US4975550 Security device for computers
11/1990
11/28/1990EP0398931A1 Cryptographic method and apparatus with electronically redefinable algorithm.
11/27/1990US4974167 Erasable data acquisition and storage instrument
11/22/1990EP0398645A2 System for controlling access privileges
11/22/1990EP0398492A2 A flexible interface to authentication services in a distributed data processing system
11/20/1990US4972477 Encoder/decoder
11/20/1990US4972175 Security enclosures
11/15/1990WO1990013864A1 Improved security for machine-writeable data storage systems
11/15/1990WO1990012357A3 Computer security system
11/14/1990EP0397194A2 Semiconductor memory device having two types of memory cell
11/13/1990CA1276288C Restricted access television transmission system
11/07/1990EP0395749A1 Method and device for the protection and universalization of a software
11/01/1990WO1990013084A1 Computer file protection system
10/1990
10/31/1990EP0394834A2 Computer having resume function
10/29/1990WO1990013865A1 Method and apparatus for remotely controlling and monitoring the use of computer software
10/29/1990CA2053261A1 Method and apparatus for remotely controlling and monitoring the use of computer software
10/24/1990EP0329681A4 Database usage metering and protection system and method
10/23/1990US4965568 Multilevel security apparatus and method with personal key
10/21/1990WO1990013085A1 Memory cartridge
10/18/1990WO1990012464A1 Method and apparatus for protecting material on storage media
10/17/1990CN1010062B Cartridge for gaming machine and gaming machine using the same
10/16/1990US4964163 Method and apparatus for controlling access to a communication system
10/09/1990US4962533 Data protection for computer systems
10/09/1990US4962531 Transaction system comprising one or more host exchanges and a number of distributed terminal stations
10/09/1990US4962530 System for cryptographing and identification
10/09/1990US4962449 Computer security system having remote location recognition and remote location lock-out
10/03/1990EP0389895A1 Method and apparatus for user identification based on permuted kernels
10/02/1990WO1990012357A2 Computer security system
10/02/1990US4961224 Controlling access to network resources
10/02/1990US4961109 Chargeable program receiving limit setting system in two-way cable television system
10/02/1990CA2050573A1 Computer security system
09/1990
09/26/1990EP0389184A1 Electronic information processing method and device
09/26/1990EP0282570A4 Metering retrieval of encrypted data stored in customer data retrieval terminal
09/26/1990EP0238537B1 System for preventing software piracy employing multi-encrypted keys and single decryption circuit modules
09/25/1990US4959861 Security system for computer software
09/25/1990US4959860 Power-on password functions for computer system
09/20/1990WO1990010908A1 Data processing device for the security of copyrights
09/20/1990WO1990006579A3 Improved disc unit
09/19/1990EP0387462A1 Electronic document approval system
09/18/1990US4958291 System for accounting for postage expended by a postage meter having security during editing of accounts
09/14/1990WO1990010919A1 Controller card and associated reading unit
09/14/1990CA2049030A1 Controller card and associated reading unit
09/12/1990EP0386867A2 Improved public key/signature cryptosystem with enhanced digital signature certification
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