diff options
Diffstat (limited to 'crypto/src/math/ec/custom/sec/SecT283Field.cs')
| -rw-r--r-- | crypto/src/math/ec/custom/sec/SecT283Field.cs | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecT283Field.cs b/crypto/src/math/ec/custom/sec/SecT283Field.cs index 334986452..332e47afe 100644 --- a/crypto/src/math/ec/custom/sec/SecT283Field.cs +++ b/crypto/src/math/ec/custom/sec/SecT283Field.cs @@ -48,7 +48,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec z[4] = x[4]; } - private static void AddTo(ulong[] x, ulong[] z) + public static void AddTo(ulong[] x, ulong[] z) { z[0] ^= x[0]; z[1] ^= x[1]; @@ -187,6 +187,11 @@ 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); @@ -460,8 +465,24 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec protected static void ImplSquare(ulong[] x, ulong[] zz) { - Interleave.Expand64To128(x, 0, 4, zz, 0); zz[8] = Interleave.Expand32to64((uint)x[4]); + +#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); } } } |