diff options
Diffstat (limited to 'libraries/spongycastle/core/src/main/java/org/spongycastle/math/ec/ZSignedDigitR2LMultiplier.java')
-rw-r--r-- | libraries/spongycastle/core/src/main/java/org/spongycastle/math/ec/ZSignedDigitR2LMultiplier.java | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/math/ec/ZSignedDigitR2LMultiplier.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/math/ec/ZSignedDigitR2LMultiplier.java deleted file mode 100644 index e9147ea7d..000000000 --- a/libraries/spongycastle/core/src/main/java/org/spongycastle/math/ec/ZSignedDigitR2LMultiplier.java +++ /dev/null @@ -1,30 +0,0 @@ -package org.spongycastle.math.ec; - -import java.math.BigInteger; - -public class ZSignedDigitR2LMultiplier extends AbstractECMultiplier -{ - /** - * 'Zeroless' Signed Digit Right-to-Left. - */ - protected ECPoint multiplyPositive(ECPoint p, BigInteger k) - { - ECPoint R0 = p.getCurve().getInfinity(), R1 = p; - - int n = k.bitLength(); - int s = k.getLowestSetBit(); - - R1 = R1.timesPow2(s); - - int i = s; - while (++i < n) - { - R0 = R0.add(k.testBit(i) ? R1 : R1.negate()); - R1 = R1.twice(); - } - - R0 = R0.add(R1); - - return R0; - } -} |