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| author | Peter Dettman <peter.dettman@bouncycastle.org> | 2022-08-02 01:22:48 +0700 |
|---|---|---|
| committer | Peter Dettman <peter.dettman@bouncycastle.org> | 2022-08-02 01:22:48 +0700 |
| commit | 17b0cc528f52df638d1261fb872fea7bf4228c95 (patch) | |
| tree | e361f6e9d10f85a61a06a5bf134a7a883c25b110 /crypto/src/math/ec/custom/sec/SecT283Field.cs | |
| parent | TLS: 'tls-exporter' channel binding (diff) | |
| download | BouncyCastle.NET-ed25519-17b0cc528f52df638d1261fb872fea7bf4228c95.tar.xz | |
Use intrinsics in custom binary curves
Diffstat (limited to 'crypto/src/math/ec/custom/sec/SecT283Field.cs')
| -rw-r--r-- | crypto/src/math/ec/custom/sec/SecT283Field.cs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecT283Field.cs b/crypto/src/math/ec/custom/sec/SecT283Field.cs index ee5ad89c5..2ee96048f 100644 --- a/crypto/src/math/ec/custom/sec/SecT283Field.cs +++ b/crypto/src/math/ec/custom/sec/SecT283Field.cs @@ -1,5 +1,9 @@ using System; using System.Diagnostics; +#if NETCOREAPP3_0_OR_GREATER +using System.Runtime.Intrinsics; +using System.Runtime.Intrinsics.X86; +#endif using Org.BouncyCastle.Math.Raw; @@ -373,6 +377,20 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec Debug.Assert(x >> 57 == 0); Debug.Assert(y >> 57 == 0); +#if NETCOREAPP3_0_OR_GREATER + if (Pclmulqdq.IsSupported) + { + var X = Vector128.CreateScalar(x); + var Y = Vector128.CreateScalar(y); + var Z = Pclmulqdq.CarrylessMultiply(X, Y, 0x00); + ulong z0 = Z.GetElement(0); + ulong z1 = Z.GetElement(1); + z[zOff ] = z0 & M57; + z[zOff + 1] = (z0 >> 57) ^ (z1 << 7); + return; + } +#endif + //u[0] = 0; u[1] = y; u[2] = u[1] << 1; |