24 lines
869 B
Java
24 lines
869 B
Java
package org.bouncycastle.math.ec;
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import java.math.BigInteger;
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/* loaded from: classes6.dex */
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public class NafL2RMultiplier extends AbstractECMultiplier {
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@Override // org.bouncycastle.math.ec.AbstractECMultiplier
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protected ECPoint multiplyPositive(ECPoint eCPoint, BigInteger bigInteger) {
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int[] generateCompactNaf = WNafUtil.generateCompactNaf(bigInteger);
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ECPoint normalize = eCPoint.normalize();
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ECPoint negate = normalize.negate();
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ECPoint infinity = eCPoint.getCurve().getInfinity();
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int length = generateCompactNaf.length;
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while (true) {
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length--;
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if (length < 0) {
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return infinity;
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}
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int i = generateCompactNaf[length];
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infinity = infinity.twicePlus((i >> 16) < 0 ? negate : normalize).timesPow2(i & 65535);
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}
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}
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}
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