diff options
Diffstat (limited to 'bcprov/src/main/java/org/bouncycastle/math/ec/NafL2RMultiplier.java')
-rw-r--r-- | bcprov/src/main/java/org/bouncycastle/math/ec/NafL2RMultiplier.java | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/bcprov/src/main/java/org/bouncycastle/math/ec/NafL2RMultiplier.java b/bcprov/src/main/java/org/bouncycastle/math/ec/NafL2RMultiplier.java deleted file mode 100644 index 91d91d1..0000000 --- a/bcprov/src/main/java/org/bouncycastle/math/ec/NafL2RMultiplier.java +++ /dev/null @@ -1,30 +0,0 @@ -package org.bouncycastle.math.ec; - -import java.math.BigInteger; - -/** - * Class implementing the NAF (Non-Adjacent Form) multiplication algorithm (left-to-right). - */ -public class NafL2RMultiplier extends AbstractECMultiplier -{ - protected ECPoint multiplyPositive(ECPoint p, BigInteger k) - { - int[] naf = WNafUtil.generateCompactNaf(k); - - ECPoint addP = p.normalize(), subP = addP.negate(); - - ECPoint R = p.getCurve().getInfinity(); - - int i = naf.length; - while (--i >= 0) - { - int ni = naf[i]; - int digit = ni >> 16, zeroes = ni & 0xFFFF; - - R = R.twicePlus(digit < 0 ? subP : addP); - R = R.timesPow2(zeroes); - } - - return R; - } -} |