System and method for validating program execution at run-time using control flow signatures
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United States of America Patent
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Sep 12, 2017
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N/A
app pub date -
Dec 30, 2015
filing date -
Jul 15, 2010
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Abstract
A processor comprising: an instruction processing pipeline, configured to receive a sequence of instructions for execution, said sequence comprising at least one instruction including a flow control instruction which terminates the sequence; a hash generator, configured to generate a hash associated with execution of the sequence of instructions; a memory configured to securely receive a reference signature corresponding to a hash of a verified corresponding sequence of instructions; verification logic configured to determine a correspondence between the hash and the reference signature; and authorization logic configured to selectively produce a signal, in dependence on a degree of correspondence of the hash with the reference signature.
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