State-based cache for antivirus software
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United States of America Patent
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Dec 7, 1999
Issued Date -
N/A
app pub date -
Dec 1, 1998
filing date -
Sep 28, 1995
priority date (Note) -
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Abstract
A computer-implemented method for executing a computer file in a CPU emulator (154) to detect a computer virus. The method includes simulating (302) the execution of a predetermined number of instructions of the computer file in the CPU emulator (154), suspending (303) the execution, constructing (304) a state record, temporarily storing (305) the state record in memory, comparing (306) the constructed state record to state records stored in a state cache (158), and indicating (308) that the file is virus free when the constructed state record matches one of the stored state records.
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