Method and apparatus for securing indirect function calls by using program counter encoding
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United States of America Patent
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Nov 12, 2013
Grant Date -
Jan 12, 2012
app pub date -
Dec 16, 2010
filing date -
Jul 12, 2010
priority date (Note) -
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Abstract
A method for securing indirect function calls by using program counter encoding is provided. The method includes inserting a decoding code for an address of a library function stored in a GOT (Global Offset Table) entry into a PLT (Procedure Linkage Table) entry when an object file is built; generating an encoding key corresponding to the decoding code; and encoding the GOT entry corresponding to the library function by using the encoding key when program execution begins.
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