Method and system for obfuscation of computer program execution flow to increase computer program security
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United States of America Patent
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Jul 10, 2007
Grant Date -
May 15, 2003
app pub date -
Nov 15, 2001
filing date -
Nov 15, 2001
priority date (Note) -
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Abstract
A method and system for increasing security of a software program by obfuscation of program execution flow is disclosed, wherein the software program is executed on a computer system that includes a user-level protected mode and a kernel-level unprotected mode. The method and system include first identifying critical code segments to be hidden in the software program. The non-critical portions of the software program are then executed in the user-level protected mode, while the critical code segments are executed within respective exception handlers, thereby hiding execution of the critical code segments from a debugger program.
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