Instruction/data protection employing derived obscuring instruction/data
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Feb 14, 2006
Grant Date -
N/A
app pub date -
Apr 20, 2000
filing date -
Apr 20, 2000
priority date (Note) -
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Abstract
A method and apparatus are described for protecting critical computer software and/or data with a large amount of obscuring instructions and or data to the extent that observing and understanding the obscured instructions and/or data is not humanly feasible. In a preferred method of obscuring software, a bank of obscuring instructions is prepared, a large number of obscuring instructions are selected from the bank and injected in the software code to be protected and a static image of the obscured sequence of code is encrypted and/or compressed. At execution, the obscured instructions are executed one at a time to make run time tracing a labor intensive process.
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