diff options
Diffstat (limited to 'crypto/src/math/ec/custom/sec/SecT239Field.cs')
| -rw-r--r-- | crypto/src/math/ec/custom/sec/SecT239Field.cs | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecT239Field.cs b/crypto/src/math/ec/custom/sec/SecT239Field.cs index a3851de16..d48e1ec2b 100644 --- a/crypto/src/math/ec/custom/sec/SecT239Field.cs +++ b/crypto/src/math/ec/custom/sec/SecT239Field.cs @@ -1,6 +1,8 @@ using System; using System.Diagnostics; #if NETCOREAPP3_0_OR_GREATER +using System.Runtime.CompilerServices; +using System.Runtime.InteropServices; using System.Runtime.Intrinsics; using System.Runtime.Intrinsics.X86; #endif @@ -42,7 +44,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec z[3] = x[3]; } - private static void AddTo(ulong[] x, ulong[] z) + public static void AddTo(ulong[] x, ulong[] z) { z[0] ^= x[0]; z[1] ^= x[1]; @@ -205,6 +207,11 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec AddExt(zz, tt, zz); } + public static void SquareExt(ulong[] x, ulong[] zz) + { + ImplSquare(x, zz); + } + public static void SquareN(ulong[] x, int n, ulong[] z) { Debug.Assert(n > 0); @@ -384,6 +391,21 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec protected static void ImplSquare(ulong[] x, ulong[] zz) { +#if NETCOREAPP3_0_OR_GREATER + if (Bmi2.X64.IsSupported) + { + zz[7] = Bmi2.X64.ParallelBitDeposit(x[3] >> 32, 0x5555555555555555UL); + zz[6] = Bmi2.X64.ParallelBitDeposit(x[3] , 0x5555555555555555UL); + zz[5] = Bmi2.X64.ParallelBitDeposit(x[2] >> 32, 0x5555555555555555UL); + zz[4] = Bmi2.X64.ParallelBitDeposit(x[2] , 0x5555555555555555UL); + zz[3] = Bmi2.X64.ParallelBitDeposit(x[1] >> 32, 0x5555555555555555UL); + zz[2] = Bmi2.X64.ParallelBitDeposit(x[1] , 0x5555555555555555UL); + zz[1] = Bmi2.X64.ParallelBitDeposit(x[0] >> 32, 0x5555555555555555UL); + zz[0] = Bmi2.X64.ParallelBitDeposit(x[0] , 0x5555555555555555UL); + return; + } +#endif + Interleave.Expand64To128(x, 0, 4, zz, 0); } } |