Method and apparatus for preventing information leakage attacks on a microelectronic assembly
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United States of America Patent
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Sep 25, 2001
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N/A
app pub date -
Jul 26, 1999
filing date -
Jul 26, 1999
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Abstract
An apparatus and method for preventing information leakage attacks on a microelectronic assembly is described for performing a cryptographic algorithm by transforming a first function, used by the cryptographic algorithm, into a second function. The method includes receiving (1102) a masked input data having n number of bits that is masked with an input mask, wherein n is a first predetermined integer. The method also includes processing (1104) the masked input data using a second function based on a predetermined masking scheme, and producing (1106) a masked output data having m number of bits that is masked with an output mask, wherein m is a second predetermined integer.
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