Electrical computers and digital processing systems: support – Data processing protection using cryptography – Computer instruction/address encryption
Reexamination Certificate
2005-04-26
2011-12-27
Orgad, Edan (Department: 2439)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
Computer instruction/address encryption
C713S189000, C711S163000, C711S164000, C726S001000, C726S002000, C726S022000, C726S026000, C726S034000, C712S208000, C712S209000
Reexamination Certificate
active
08086871
ABSTRACT:
A method and apparatus for an independent operating system that prevents certain classes of computer attacks. Instruction decryption is performed on an existing instruction set for a processor. The processor architecture limits the impact on processor execution timing. The instruction execution timing is not altered in the processor core and any additional processing is overlapped into existing operations.
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Japan Office Action partial translation Jul. 5, 2011.
McIntosh Gordon D.
Silha Edward John
Baca Matthew W.
Harris Andrew M.
International Business Machines - Corporation
Mitch Harris Atty at Law, LLC
Orgad Edan
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