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| author | Peter Dettman <peter.dettman@bouncycastle.org> | 2015-08-13 18:20:55 +0700 |
|---|---|---|
| committer | Peter Dettman <peter.dettman@bouncycastle.org> | 2015-08-13 18:20:55 +0700 |
| commit | dbbd073f7c5081b5e92b1ba685142ea9ff4faeab (patch) | |
| tree | ecd528a9233212f6e074fe53def9ae58e0126a57 /crypto/src/math/ec/custom/sec/SecT409FieldElement.cs | |
| parent | Switch from lookup table to bit twiddling (diff) | |
| download | BouncyCastle.NET-ed25519-dbbd073f7c5081b5e92b1ba685142ea9ff4faeab.tar.xz | |
Use Itoh-Tsujii inversion (with extended bases for some cases)
Diffstat (limited to 'crypto/src/math/ec/custom/sec/SecT409FieldElement.cs')
| -rw-r--r-- | crypto/src/math/ec/custom/sec/SecT409FieldElement.cs | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecT409FieldElement.cs b/crypto/src/math/ec/custom/sec/SecT409FieldElement.cs index b60ceafee..581ea73df 100644 --- a/crypto/src/math/ec/custom/sec/SecT409FieldElement.cs +++ b/crypto/src/math/ec/custom/sec/SecT409FieldElement.cs @@ -152,8 +152,9 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec public override ECFieldElement Invert() { - return new SecT409FieldElement( - AbstractF2mCurve.Inverse(409, new int[] { 87 }, ToBigInteger())); + ulong[] z = Nat448.Create64(); + SecT409Field.Invert(x, z); + return new SecT409FieldElement(z); } public override ECFieldElement Sqrt() |