Arrangement for and method of protecting a data processing device against an attack or analysis
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United States of America Patent
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May 27, 2014
Grant Date -
Apr 22, 2010
app pub date -
Jun 23, 2006
filing date -
Jun 29, 2005
priority date (Note) -
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Abstract
In order to further develop an arrangement for as well as a method of protecting at least one data processing device, in particular at least one embedded system, for example at least one chip card or smart card, against at least one attack, in particular against at least one side-channel attack, for example against at least one current trace analysis, the data processing device, in particular at least one integrated circuit of the data processing device, carrying out calculations, in particular cryptographic operations wherein an attack, for example an E[lectro]M[agnetic] radiation attack, or an analysis, for example a D[ifferential]P[ower]A[nalysis], such attack or such analysis in particular targeted on finding out a private key, is to be securely averted, it is proposed to blind all intermediate results of the calculations by at least one random variable, without inverting any operand of the calculations.
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