diff options
Diffstat (limited to 'core/src/main/java/org/bouncycastle/math/ec/NafR2LMultiplier.java')
-rw-r--r-- | core/src/main/java/org/bouncycastle/math/ec/NafR2LMultiplier.java | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/core/src/main/java/org/bouncycastle/math/ec/NafR2LMultiplier.java b/core/src/main/java/org/bouncycastle/math/ec/NafR2LMultiplier.java deleted file mode 100644 index aed2336b..00000000 --- a/core/src/main/java/org/bouncycastle/math/ec/NafR2LMultiplier.java +++ /dev/null @@ -1,31 +0,0 @@ -package org.bouncycastle.math.ec; - -import java.math.BigInteger; - -/** - * Class implementing the NAF (Non-Adjacent Form) multiplication algorithm (right-to-left). - */ -public class NafR2LMultiplier extends AbstractECMultiplier -{ - protected ECPoint multiplyPositive(ECPoint p, BigInteger k) - { - int[] naf = WNafUtil.generateCompactNaf(k); - - ECPoint R0 = p.getCurve().getInfinity(), R1 = p; - - int zeroes = 0; - for (int i = 0; i < naf.length; ++i) - { - int ni = naf[i]; - int digit = ni >> 16; - zeroes += ni & 0xFFFF; - - R1 = R1.timesPow2(zeroes); - R0 = R0.add(digit < 0 ? R1.negate() : R1); - - zeroes = 1; - } - - return R0; - } -} |