Computer security system
US4882752A · kind A · utility
Inventors
Key dates
| Filing date | Jun 25, 1986 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Jun 25, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2113
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A security system for distributed computer systems with a central computer and remotely located interactive terminals. The security system includes a master security control processor (SCP) which is associated with the central computer, and one or more slave SCPs, each of which is associated with one of the interactive terminals. Clearance at several security levels is required before communications between one of the remote terminals and the central computer is authorized. The security levels are implemented after communications are established to maintain only authorized access to the central computer. One of several unauthorized access modes are implemented when an unauthorized interactive terminal or SCP is identified. All data communicated between the master and slave SCPs is encrypted for security.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.