diff options
Diffstat (limited to 'crypto/src/math/ec/ECCurve.cs')
| -rw-r--r-- | crypto/src/math/ec/ECCurve.cs | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/crypto/src/math/ec/ECCurve.cs b/crypto/src/math/ec/ECCurve.cs index a84863ce6..50ff88e82 100644 --- a/crypto/src/math/ec/ECCurve.cs +++ b/crypto/src/math/ec/ECCurve.cs @@ -2,6 +2,7 @@ using System; using System.Collections; using Org.BouncyCastle.Math.EC.Abc; +using Org.BouncyCastle.Math.EC.Endo; using Org.BouncyCastle.Math.EC.Multiplier; using Org.BouncyCastle.Math.Field; using Org.BouncyCastle.Utilities; @@ -30,12 +31,14 @@ namespace Org.BouncyCastle.Math.EC { protected ECCurve outer; protected int coord; + protected ECEndomorphism endomorphism; protected ECMultiplier multiplier; - internal Config(ECCurve outer, int coord, ECMultiplier multiplier) + internal Config(ECCurve outer, int coord, ECEndomorphism endomorphism, ECMultiplier multiplier) { this.outer = outer; this.coord = coord; + this.endomorphism = endomorphism; this.multiplier = multiplier; } @@ -45,6 +48,12 @@ namespace Org.BouncyCastle.Math.EC return this; } + public Config SetEndomorphism(ECEndomorphism endomorphism) + { + this.endomorphism = endomorphism; + return this; + } + public Config SetMultiplier(ECMultiplier multiplier) { this.multiplier = multiplier; @@ -65,6 +74,7 @@ namespace Org.BouncyCastle.Math.EC } c.m_coord = coord; + c.m_endomorphism = endomorphism; c.m_multiplier = multiplier; return c; @@ -76,6 +86,7 @@ namespace Org.BouncyCastle.Math.EC protected BigInteger m_order, m_cofactor; protected int m_coord = COORD_AFFINE; + protected ECEndomorphism m_endomorphism = null; protected ECMultiplier m_multiplier = null; protected ECCurve(IFiniteField field) @@ -88,7 +99,7 @@ namespace Org.BouncyCastle.Math.EC public virtual Config Configure() { - return new Config(this, this.m_coord, this.m_multiplier); + return new Config(this, this.m_coord, this.m_endomorphism, this.m_multiplier); } public virtual ECPoint CreatePoint(BigInteger x, BigInteger y) @@ -110,6 +121,12 @@ namespace Org.BouncyCastle.Math.EC protected virtual ECMultiplier CreateDefaultMultiplier() { + GlvEndomorphism glvEndomorphism = m_endomorphism as GlvEndomorphism; + if (glvEndomorphism != null) + { + return new GlvMultiplier(this, glvEndomorphism); + } + return new WNafL2RMultiplier(); } @@ -296,6 +313,11 @@ namespace Org.BouncyCastle.Math.EC protected abstract ECPoint DecompressPoint(int yTilde, BigInteger X1); + public virtual ECEndomorphism GetEndomorphism() + { + return m_endomorphism; + } + /** * Sets the default <code>ECMultiplier</code>, unless already set. */ |