Apparatus and method for secure device addressing

Details Apparatus and method for secure device addressing Apparatus and method for secure device addressing

1997-06-05

1999-10-19

Palys, Joseph E.

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output addressing

710 6, 710 36, 710 48, 710 52, 709300, 713200, 395701, 395712, 380 4, 380 25, G06F 1300

Patent

active

059681365

ABSTRACT:
A method for securely accessing a peripheral device at an absolute address is disclosed. A computer program is executed to request from an operating system a memory access object including a procedure executable to address the peripheral device at the absolute address. An operating system procedure is executed to provide the memory access object to the computer program if a value associated with the computer program indicates that the computer program is trusted to perform absolute addressing. If the operating system procedure provides the memory access object to the computer program, the computer program is executed invoke the memory access object procedure to address the peripheral device at the absolute address.

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