diff options
| author | Peter Dettman <peter.dettman@bouncycastle.org> | 2013-09-28 20:20:24 +0400 |
|---|---|---|
| committer | Peter Dettman <peter.dettman@bouncycastle.org> | 2013-09-28 20:20:24 +0400 |
| commit | 2d0f484008da488474a00694e6fc5ed848f59950 (patch) | |
| tree | fa30b9ba1bbb305363baa41c7ee969cd17e7fb59 /core/src/main/java/org/bouncycastle/math | |
| parent | f4f32676b75a63a20c8234d782a386ebb8e6d520 (diff) | |
Fix equal-x check for lambda-projective addition
Diffstat (limited to 'core/src/main/java/org/bouncycastle/math')
| -rw-r--r-- | core/src/main/java/org/bouncycastle/math/ec/ECPoint.java | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/core/src/main/java/org/bouncycastle/math/ec/ECPoint.java b/core/src/main/java/org/bouncycastle/math/ec/ECPoint.java index 2529bf71..74ef362c 100644 --- a/core/src/main/java/org/bouncycastle/math/ec/ECPoint.java +++ b/core/src/main/java/org/bouncycastle/math/ec/ECPoint.java @@ -1227,7 +1227,7 @@ public abstract class ECPoint } ECFieldElement A = S1.add(S2); - ECFieldElement B = U1.add(U2).square(); + ECFieldElement B = U1.add(U2); if (B.isZero()) { @@ -1239,6 +1239,8 @@ public abstract class ECPoint return (ECPoint.F2m)curve.getInfinity(); } + B = B.square(); + ECFieldElement AU1 = A.multiply(U1); ECFieldElement AU2 = A.multiply(U2); ECFieldElement ABZ2 = A.multiply(B); |