INFORMATION ASSURANCE SYSTEM FOR SECURE PROGRAM EXECUTION

摘要

An enhanced information assurance system may comprise an improved computer 12 including a central processing unit (CPU) 16 emulator configured to extend the available machine instruction set. The CPU emulator may be configured to emulate machine language instructions taken from a nonnative set of secure opcodes. The CPU emulator may ensure that instructions and data 36 in random access memory (RAM) 14 remain encrypted at all times when in RAM, for example by storing the instructions 38 and data in 36 CPU registers 18 when decrypted on an as-needed basis.