Secure architecture and apparatus using an independent computer

Details Secure architecture and apparatus using an independent computer Secure architecture and apparatus using an independent computer

1994-04-29

1996-12-03

Kriess, Kevin A.

G06F 1300

Patent

active

055817637

ABSTRACT:
A portable secure computer architecture, apparatus, and method for protecting information and at least one program for controlling that information is disclosed comprising: a computer protected inside of a single sealed cartridge, the computer having a CPU, Memory, and a communications means for communicating with a host computer outside of the cartridge. All internal information and external communications are exclusively controlled by the internal program. Provision is also made for running a second program inside the architecture, while protecting secure information from that second program. Secure information is placed in a bank switched subdivision of memory. The subdivision is switched off by the information controlling program before the second program is permitted to run. Reactivating the protected subdivision causes a simultaneous non-maskable interrupt halting the second program and transferring control back to the first program.

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