| Patents for G06F 21 - Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity (119,294) |
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| 09/18/1991 | EP0447063A2 Security enhancement in a data processor through use of dynamic parameter authentication |
| 09/18/1991 | EP0447043A2 Security system for software |
| 09/18/1991 | EP0447038A2 A system for establishing a communication path in a closely coupled computer system |
| 09/17/1991 | US5050213 Database usage metering and protection system and method |
| 09/17/1991 | US5050212 Method and apparatus for verifying the integrity of a file stored separately from a computer |
| 09/17/1991 | CA1289222C Apparatus and method for security of electric and electronic devices |
| 09/12/1991 | DE4107558A1 Protecting data stored in ROM - using code stored in user programme with checks on data and addresses |
| 09/10/1991 | US5048085 Transaction system security method and apparatus |
| 09/10/1991 | US5047928 Billing system for computer software |
| 09/10/1991 | CA2037071A1 Method and apparatus for verification of passwords |
| 09/05/1991 | WO1991013403A1 Method and apparatus for controlling access to and corruption of information in computer systems |
| 09/04/1991 | EP0444351A2 Voice password-controlled computer security system |
| 09/03/1991 | CA1288492C Method of controlling the operation of security modules |
| 08/29/1991 | CA2033566A1 Voice password controlled computer security system |
| 08/28/1991 | EP0443423A2 Method for executing trust-path commands |
| 08/21/1991 | EP0442839A2 Method for providing user access control within a distributed data processing system |
| 08/21/1991 | EP0442838A2 Method for providing user access control within a distributed data processing system by the exchange of access control profiles |
| 08/20/1991 | US5042067 Password security method |
| 08/20/1991 | CA1287920C Arrangement for a portable data carrier having multiple application files |
| 08/20/1991 | CA1287919C Security file system for a portable data carrier |
| 08/20/1991 | CA1287910C Adjunct processor for providing computer facility access protection via call transfer |
| 08/14/1991 | CA2036257A1 Method for executing trust-path commands |
| 08/07/1991 | EP0440545A1 Hardware device identifiable by a program using standard or non-standard communication means |
| 08/07/1991 | EP0440158A1 Mutual authentication system |
| 07/30/1991 | US5036460 Microprocessor having miswriting preventing function |
| 07/25/1991 | DE4015482C1 User authenticating system for data processing terminal - contactlessly interrogates identification disc worn by user |
| 07/23/1991 | US5034980 Microprocessor for providing copy protection |
| 07/23/1991 | CA1286744C Method of confirming user in modem communications and its system |
| 07/16/1991 | US5033084 Method and apparatus for protection of software in an electronic system |
| 07/16/1991 | US5032979 Distributed security auditing subsystem for an operating system |
| 07/16/1991 | US5032708 Write-once-read-once batteryless authentication token |
| 07/16/1991 | CA1286417C Method and apparatus for forming identification data |
| 07/10/1991 | EP0436365A2 Method and system for securing terminals |
| 07/06/1991 | WO1991010192A1 Method and apparatus for controlling writing to memory |
| 07/06/1991 | CA2070986A1 Method and apparatus for controlling writing to memory |
| 07/03/1991 | EP0435094A2 Uniform interface for cryptographic services |
| 07/03/1991 | EP0434876A1 A computer system for unit trust processing functions |
| 07/02/1991 | US5029206 Uniform interface for cryptographic services |
| 06/27/1991 | WO1991009383A1 A method of automatic verification of personal identity |
| 06/27/1991 | CA2032795A1 Method for securing terminal and terminal apparatus for use with the method |
| 06/26/1991 | EP0216937B1 Ic card |
| 06/25/1991 | US5027398 Copy prevention apparatus and method therefor |
| 06/25/1991 | US5027397 Data protection by detection of intrusion into electronic assemblies |
| 06/25/1991 | US5027396 Execution protection for floppy disks |
| 06/25/1991 | US5027395 Data-locking system |
| 06/20/1991 | DE3938479A1 Data protecting appts. for data network - uses programme segment capable of withholding permission for use of data from transmission side if user is unauthorised |
| 06/19/1991 | EP0432333A1 Computer system security device |
| 06/18/1991 | US5025255 Secure keyboard with random order of key interrogation |
| 06/11/1991 | US5023936 Method and apparatus for externally defining the operational mode of a digital radio transceiver |
| 06/11/1991 | US5023908 Method and apparatus for personal identification |
| 06/11/1991 | US5023907 Network license server |
| 06/11/1991 | US5023773 Authorization for selective program access to data in multiple address spaces |
| 06/05/1991 | EP0430734A1 System and method to securely operate a computerprogram |
| 06/04/1991 | US5022080 Electronic notary |
| 06/04/1991 | US5022077 Apparatus and method for preventing unauthorized access to BIOS in a personal computer system |
| 05/30/1991 | WO1991007826A1 Computer control system |
| 05/30/1991 | WO1991007730A1 Security level identification method for computer based information |
| 05/29/1991 | EP0428528A1 Data security device. |
| 05/22/1991 | EP0428005A2 Microcontroller with non-volatile memory error repair |
| 05/21/1991 | US5018096 Security administrator for automatically updating security levels associated with operator personal identification data |
| 05/16/1991 | WO1991006904A1 Method for verifying the identity of an individual and verifying device for implementing the method |
| 05/15/1991 | EP0427465A2 Databaseless security system |
| 05/14/1991 | US5014982 Memory cartridge and game apparatus using the same |
| 05/11/1991 | WO1991007798A1 A protective device for computers and the like, adapated to prevent the pick up, the recording and the unauthorized use of data from the computers during the working thereof, and to protect them against high energy transient disturbances taking place on the main a.c. power line |
| 05/11/1991 | CA2073011A1 Protective device for computers and the like, adapted to prevent the pick up, the recording and the unauthorized use of data from the computers during the working thereof, and to protect them against high energy transient disturbances taking place on the main a.c. power line |
| 05/08/1991 | EP0426595A2 Method of permitting access of shared resources using user set definition to support affinity and surrogate user relations |
| 05/08/1991 | EP0425771A2 An efficient mechanism for providing fine grain storage protection intervals |
| 05/07/1991 | US5014312 Security system for the protection of programming zones of a chip card |
| 05/07/1991 | US5014311 Integrated circuit with an access-controlled data memory |
| 05/07/1991 | US5014234 System with software usage timer and counter for allowing limited use but preventing continued unauthorized use of protected software |
| 05/07/1991 | US5014191 Security for digital signal processor program memory |
| 05/02/1991 | EP0425053A1 Data processing system having memory card authenticating means, electronic circuit for use in that system and method for using this authentication |
| 05/01/1991 | WO1991006926A1 Method and apparatus for secure identification and verification |
| 04/30/1991 | US5012515 Security method for a distributed data processing system |
| 04/30/1991 | US5012514 Hard drive security system |
| 04/23/1991 | US5010571 Metering retrieval of encrypted data stored in customer data retrieval terminal |
| 04/17/1991 | EP0422757A2 Public/key date-time notary facility |
| 04/17/1991 | EP0422184A1 Computer file protection system |
| 04/16/1991 | US5008936 Backup/restore technique in a microcomputer-based encryption system |
| 04/16/1991 | CA1283187C Key management system for open communication environment |
| 04/10/1991 | EP0421409A2 Transaction system security method and apparatus |
| 04/10/1991 | EP0420994A1 Memory cartridge |
| 04/09/1991 | US5007089 Secure key management using programable control vector checking |
| 04/09/1991 | US5007085 Remotely sensed personal stylus |
| 04/09/1991 | US5007082 Computer software encryption apparatus |
| 04/06/1991 | WO1991005302A1 A method of controlling access to restricted access data and communication system therefor |
| 04/04/1991 | WO1991005306A1 Electro-active cradle circuits for the detection of access or penetration |
| 04/04/1991 | CA2067331A1 Electro-active cradle circuits for the detection of access or penetration |
| 04/03/1991 | CN1050457A Mothod and device for obtaining record carrier and anticopy means |
| 04/02/1991 | US5005200 Public key/signature cryptosystem with enhanced digital signature certification |
| 04/02/1991 | US5004232 Computer game cartridge security circuit |
| 03/27/1991 | EP0419260A2 Electrically erasable and programmable non-volatile semiconductor memory device |
| 03/27/1991 | EP0418964A1 Record carrier, method of and information recording device for obtaining such record carriers, and information recording device comprising anti-copy means to inhibit unauthorized copying |
| 03/26/1991 | US5003595 Secure dial access to computer systems |
| 03/26/1991 | US5003594 Portable electronic device and its secret information collation method |
| 03/20/1991 | EP0418024A2 Secure cryptographic processor arrangement |
| 03/20/1991 | EP0417889A2 Protection method and apparatus for computer system |
| 03/20/1991 | EP0417817A2 System and method for reducing the bandwidth of timing channels in a digital data processing system |
| 03/20/1991 | EP0417611A2 Method and apparatus for protecting computer software using a presettable counter in combination with an additional function |
| 03/20/1991 | EP0417447A2 Data protection by detection of intrusion into electronic assemblies |