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)
09/1990
09/11/1990US4956769 Occurence and value based security system for computer databases
09/07/1990WO1990010344A1 Improved encryption printed circuit board
09/07/1990WO1990010292A1 Process for controlling the use of an information storage medium, in particular of a magnetic or magneto-optic type, and system for its implementation
09/05/1990EP0385400A2 Multilevel security apparatus and method with personal key
09/05/1990EP0385036A2 Erasable data acquisition and storage instrument
08/1990
08/29/1990EP0384610A2 Tamper resistant access authorising method
08/29/1990EP0384475A1 Method for subscriber identification and for the generation and verification of electronic signatures in a data exchange system
08/29/1990EP0383985A1 Method for subscriber identification and for generation and verification of electronic signatures in a data exchange system
08/28/1990US4953209 Self-verifying receipt and acceptance system for electronically delivered data objects
08/28/1990US4952796 Light detection circuit having a junction reverse-biased by a current generator
08/22/1990EP0382811A1 Independent computer module system
08/21/1990US4951249 Method and apparatus for controlled access to a computer system
08/21/1990US4951247 Data exchange system comprising a plurality of user terminals each containing a chip card reading device
08/21/1990CA1273126A1 Instruction for implementing a secure computer system
08/21/1990CA1273109A1 Secured printer for a value printing system
08/16/1990EP0382470A2 Computer with improved keyboard password functions
08/16/1990EP0382468A2 Power-on password functions for computer system
08/07/1990US4947318 Data processing security system for automatically transferring software protection data from removable store into internal memory upon mounting of stores
08/07/1990CA2008619A1 Power-on password functions for computer system
08/02/1990DE3902767A1 Method and arrangement for identification of software which is stored in a microcomputer of a sensor
07/1990
07/31/1990US4945468 Trusted path mechanism for virtual terminal environments
07/26/1990WO1990008376A1 Security system for visual display units and personal computers
07/26/1990DE3914233C1 Computer program protection device - has generator data output connected with consisting testing stage
07/25/1990EP0379333A1 Secure data interchange system
07/25/1990CN1044179A Ststem for preventing the use of an unauthorized external memory
07/24/1990US4944008 Electronic keying scheme for locking data
07/18/1990EP0378385A2 System for preventing the use of an unauthorized external memory
07/18/1990EP0378307A2 Prevention of alteration of data stored in secure integrated circuit chip memory
07/18/1990EP0378306A2 Secure integrated circuit chip with conductive field
07/18/1990EP0377970A2 I/O caching
07/18/1990EP0377706A1 System and method for the secure handling of encryptor keys.
07/17/1990US4942606 Computer with improved keyboard password functions
07/10/1990US4941175 Tamper-resistant method for authorizing access to data between a host and a predetermined number of attached workstations
07/10/1990US4941034 Integrated semiconductor circuit
06/1990
06/27/1990EP0375546A1 Method for distorting the key identification of an uncoded keyboard, and circuit for carrying out this method
06/27/1990EP0375386A2 Portable electronic device and its secret information collation method
06/26/1990US4937864 Debug routine accessing system
06/26/1990US4937863 Software licensing management system
06/26/1990US4937861 Computer software encryption apparatus
06/20/1990EP0373411A2 Element insertable in an EDP device
06/20/1990EP0373278A1 Remote power on control device
06/20/1990EP0373175A1 Device for identification of messages.
06/14/1990WO1990006579A2 Improved disc unit
06/12/1990US4933969 Data authentication and protection system
06/12/1990US4933898 Secure integrated circuit chip with conductive shield
06/12/1990CA1270339A1 System for determining a truth of software in an information processing apparatus
06/06/1990EP0371673A2 Secure file handling in a computer operating system
06/05/1990US4932056 Method and apparatus for user identification based on permuted kernels
06/05/1990US4932054 Method and apparatus for protecting computer software utilizing coded filter network in conjunction with an active coded hardware device
06/05/1990US4932053 Safety device against the unauthorized detection of protected data
05/1990
05/29/1990US4930073 Method to prevent use of incorrect program version in a computer system
05/23/1990EP0189476B1 Security system and method for remote terminal network
05/17/1990WO1990005418A1 System and method of protecting integrity of computer data and software
05/17/1990WO1990005347A1 Protected terminal downloading system and implementation process
05/17/1990WO1990005340A1 Personal computer access control system
05/16/1990EP0368752A1 Protected remote loading system of a terminal, and method used
05/16/1990EP0368727A1 Security device against the unauthorised detection of protected data
05/15/1990US4926481 Computer access security code system
05/15/1990US4926476 In a processing system
05/15/1990US4926388 Electronic device for independently erasing secret and non-secret data from memory
05/09/1990EP0367700A2 A method of verifying receipt and acceptance of electronically delivered data objects
05/09/1990EP0207320B1 Integrated circuit and method to protect secret data
05/08/1990US4924378 License mangagement system and license storage key
05/02/1990EP0365918A2 Remotely sensed personal stylus
05/01/1990US4922521 System for providing secure telecommunication access to a computer
04/1990
04/26/1990DE3835625A1 Keyboard
04/26/1990DE3835624A1 Keyboard
04/24/1990CA1268247A1 Security arrangement for downloadable cable television converters
04/18/1990EP0067556B1 Digital data processing system
04/17/1990US4918653 Trusted path mechanism for an operating system
04/12/1990DE3834046A1 Method and device for limiting the access to certain data areas of a computer
04/11/1990EP0194289B1 Information display scheme for subscribers of a subscription television system
04/10/1990US4916738 Remote access terminal security
04/10/1990US4916333 Binary logic level electrical detector namely to prevent the detection of secret codes contained in a memory card
04/05/1990WO1990003607A1 Data processing system using ic card
04/04/1990EP0360878A1 Method for the irreversible blockage of the execution of particular memory operations in monolithically integrated microcomputer circuits
04/03/1990US4914697 Cryptographic method and apparatus with electronically redefinable algorithm
04/03/1990CA1267443A1 Method for software protection
03/1990
03/27/1990CA1267234A1 Device for controlling access to computer peripherals
03/21/1990EP0359220A2 Method and apparatus for protecting computer software utilizing coded filter network in conjunction with an active coded hardware device
03/21/1990EP0130218B1 Method of protecting file of numerical control
03/20/1990US4910776 Encryption printed circuit board
03/20/1990US4910775 Portable electronic device for use in conjunction with a screen
03/20/1990US4910707 EEPROM with protective circuit
03/20/1990US4910625 Article surveillance apparatus and systems for computer data disks
03/08/1990WO1990002382A1 Information distribution system
03/08/1990DE3828573A1 Method of protecting computer programs from illegal use
03/06/1990US4907268 Methods and apparatus for controlling access to information processed a multi-user-accessible digital computer
03/06/1990CA1266525A1 Information display scheme for subscribers of a subscription television system
02/1990
02/28/1990EP0355132A1 Computer program license management system
02/27/1990US4905281 Security apparatus and method for computers connected to telephone circuits
02/27/1990US4905277 Method for enciphering and deciphering instructions in a microcomputer, and a microcomputer used for effecting same
02/27/1990US4905142 Semiconductor integrated circuit device with built-in arrangement for memory testing
02/27/1990US4904851 Identification authenticating system
02/22/1990WO1990001736A1 Method and device for the protection and universalization of a software
02/20/1990US4903297 Restricted access television transmission system
02/20/1990US4903296 Implementing a shared higher level of privilege on personal computers for copy protection of software
02/08/1990DE3826136A1 Stromversorgungssicherheitssystem fuer computer Power supply system for computer
02/07/1990EP0207126B1 Security device for the secure storage of sensitive data
01/1990
01/30/1990US4897875 Key management system for open communication environments
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