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Elliptic curve exponentiation that can counter a differential fault attack
Elliptic curve exponentiation that can counter a differential fault attack
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机译:椭圆曲线指数可抵御差分故障攻击
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摘要
Provided is an elliptic curve exponentiation apparatus that can counter the DFA when an elliptic curve exponentiation technique is used. A computation result verification unit 127 receives, as a computation result, an exponentiation-result-point (X, Y) from an elliptic curve computation unit 124. The computation result verification unit 127 computes X3+a × X+b, and computes Y2, and outputs the received exponentiation-result-point when judging that Y2=X3+a × X+b, and does not output the received exponentiation-result-point when not judging that Y2=X3+a ×X+b.
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