diff options
Diffstat (limited to 'crypto/src/math/ec/ECPoint.cs')
| -rw-r--r-- | crypto/src/math/ec/ECPoint.cs | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/crypto/src/math/ec/ECPoint.cs b/crypto/src/math/ec/ECPoint.cs index 425424e32..6a7c3ecf0 100644 --- a/crypto/src/math/ec/ECPoint.cs +++ b/crypto/src/math/ec/ECPoint.cs @@ -306,6 +306,13 @@ namespace Org.BouncyCastle.Math.EC : Curve.CreateRawPoint(RawXCoord.Multiply(scale), RawYCoord, RawZCoords, IsCompressed); } + public virtual ECPoint ScaleXNegateY(ECFieldElement scale) + { + return IsInfinity + ? this + : Curve.CreateRawPoint(RawXCoord.Multiply(scale), RawYCoord.Negate(), RawZCoords, IsCompressed); + } + public virtual ECPoint ScaleY(ECFieldElement scale) { return IsInfinity @@ -313,6 +320,13 @@ namespace Org.BouncyCastle.Math.EC : Curve.CreateRawPoint(RawXCoord, RawYCoord.Multiply(scale), RawZCoords, IsCompressed); } + public virtual ECPoint ScaleYNegateX(ECFieldElement scale) + { + return IsInfinity + ? this + : Curve.CreateRawPoint(RawXCoord.Negate(), RawYCoord.Multiply(scale), RawZCoords, IsCompressed); + } + public override bool Equals(object obj) { return Equals(obj as ECPoint); @@ -1500,6 +1514,11 @@ namespace Org.BouncyCastle.Math.EC } } + public override ECPoint ScaleXNegateY(ECFieldElement scale) + { + return ScaleX(scale); + } + public override ECPoint ScaleY(ECFieldElement scale) { if (this.IsInfinity) @@ -1524,6 +1543,11 @@ namespace Org.BouncyCastle.Math.EC } } + public override ECPoint ScaleYNegateX(ECFieldElement scale) + { + return ScaleY(scale); + } + public override ECPoint Subtract(ECPoint b) { if (b.IsInfinity) |