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| author | Peter Dettman <peter.dettman@bouncycastle.org> | 2022-07-19 18:04:59 +0700 |
|---|---|---|
| committer | Peter Dettman <peter.dettman@bouncycastle.org> | 2022-07-19 18:04:59 +0700 |
| commit | f58628a8b4264239dbb51f2f726701cf80804689 (patch) | |
| tree | 82b5e7509d2206beacd4ec6b3e64c0927cb6663b /crypto/src/math | |
| parent | Run tests with netcoreapp2.1 (diff) | |
| download | BouncyCastle.NET-ed25519-f58628a8b4264239dbb51f2f726701cf80804689.tar.xz | |
Small GCM squaring perf. opts.
Diffstat (limited to 'crypto/src/math')
| -rw-r--r-- | crypto/src/math/raw/Interleave.cs | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/crypto/src/math/raw/Interleave.cs b/crypto/src/math/raw/Interleave.cs index a71b4a1b8..f22177fe8 100644 --- a/crypto/src/math/raw/Interleave.cs +++ b/crypto/src/math/raw/Interleave.cs @@ -90,14 +90,13 @@ namespace Org.BouncyCastle.Math.Raw } } - internal static void Expand64To128Rev(ulong x, ulong[] z, int zOff) + internal static ulong Expand64To128Rev(ulong x, out ulong low) { #if NETCOREAPP3_0_OR_GREATER if (Bmi2.X64.IsSupported) { - z[zOff ] = Bmi2.X64.ParallelBitDeposit(x >> 32, 0xAAAAAAAAAAAAAAAAUL); - z[zOff + 1] = Bmi2.X64.ParallelBitDeposit(x , 0xAAAAAAAAAAAAAAAAUL); - return; + low = Bmi2.X64.ParallelBitDeposit(x >> 32, 0xAAAAAAAAAAAAAAAAUL); + return Bmi2.X64.ParallelBitDeposit(x, 0xAAAAAAAAAAAAAAAAUL); } #endif @@ -108,8 +107,8 @@ namespace Org.BouncyCastle.Math.Raw x = Bits.BitPermuteStep(x, 0x0C0C0C0C0C0C0C0CUL, 2); x = Bits.BitPermuteStep(x, 0x2222222222222222UL, 1); - z[zOff ] = (x ) & M64R; - z[zOff + 1] = (x << 1) & M64R; + low = (x ) & M64R; + return (x << 1) & M64R; } internal static uint Shuffle(uint x) |