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This commit is contained in:
stevesensei
2026-06-15 18:18:16 +08:00
parent 97c9fba14e
commit 2b9f134e5f
4164 changed files with 386922 additions and 79 deletions
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166
Packages/com.tivadar.best.http/Runtime/Shared/TLS/Crypto/Impl/FastChaChaEngineHelper.cs Normal file
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#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
#if BESTHTTP_WITH_BURST
using Unity.Burst;
using Unity.Burst.Intrinsics;
using static Unity.Burst.Intrinsics.X86;
using static Unity.Burst.Intrinsics.Arm;
#endif
namespace Best.HTTP.Shared.TLS.Crypto.Impl
{
#if BESTHTTP_WITH_BURST
[Unity.Burst.BurstCompile]
#endif
internal static class FastChaChaEngineHelper
{
internal unsafe static void ChachaCore(int rounds, uint[] input, byte[] output)
{
fixed (uint* pinput = input)
fixed (byte* poutput = output)
ChachaCoreImpl(rounds, pinput, poutput);
}
#if BESTHTTP_WITH_BURST
[Unity.Burst.BurstCompile]
[Unity.Burst.CompilerServices.SkipLocalsInit]
#endif
internal unsafe static void ChachaCoreImpl(int rounds,
#if BESTHTTP_WITH_BURST
[NoAlias]
#endif
uint* input,
#if BESTHTTP_WITH_BURST
[NoAlias]
#endif
byte* output)
{
uint* x = stackalloc uint[16];
for (int i = 0; i < 16; i++)
x[i] = input[i];
uint tmp = 0;
for (int i = rounds; i > 0; i -= 2)
{
x[00] += x[04]; tmp = x[12] ^ x[00]; x[12] = (tmp << 16) | (tmp >> -16); // Integers.RotateLeft(x[12] ^ x[00], 16);
x[01] += x[05]; tmp = x[13] ^ x[01]; x[13] = (tmp << 16) | (tmp >> -16); // Integers.RotateLeft(x[13] ^ x[01], 16);
x[02] += x[06]; tmp = x[14] ^ x[02]; x[14] = (tmp << 16) | (tmp >> -16); // Integers.RotateLeft(x[14] ^ x[02], 16);
x[03] += x[07]; tmp = x[15] ^ x[03]; x[15] = (tmp << 16) | (tmp >> -16); // Integers.RotateLeft(x[15] ^ x[03], 16);
x[08] += x[12]; tmp = x[04] ^ x[08]; x[04] = (tmp << 12) | (tmp >> -12); // Integers.RotateLeft(x[04] ^ x[08], 12);
x[09] += x[13]; tmp = x[05] ^ x[09]; x[05] = (tmp << 12) | (tmp >> -12); // Integers.RotateLeft(x[05] ^ x[09], 12);
x[10] += x[14]; tmp = x[06] ^ x[10]; x[06] = (tmp << 12) | (tmp >> -12); // Integers.RotateLeft(x[06] ^ x[10], 12);
x[11] += x[15]; tmp = x[07] ^ x[11]; x[07] = (tmp << 12) | (tmp >> -12); // Integers.RotateLeft(x[07] ^ x[11], 12);
x[00] += x[04]; tmp = x[12] ^ x[00]; x[12] = (tmp << 8) | (tmp >> -8); // Integers.RotateLeft(x[12] ^ x[00], 8);
x[01] += x[05]; tmp = x[13] ^ x[01]; x[13] = (tmp << 8) | (tmp >> -8); // Integers.RotateLeft(x[13] ^ x[01], 8);
x[02] += x[06]; tmp = x[14] ^ x[02]; x[14] = (tmp << 8) | (tmp >> -8); // Integers.RotateLeft(x[14] ^ x[02], 8);
x[03] += x[07]; tmp = x[15] ^ x[03]; x[15] = (tmp << 8) | (tmp >> -8); // Integers.RotateLeft(x[15] ^ x[03], 8);
x[08] += x[12]; tmp = x[04] ^ x[08]; x[04] = (tmp << 7) | (tmp >> -7); // Integers.RotateLeft(x[04] ^ x[08], 7);
x[09] += x[13]; tmp = x[05] ^ x[09]; x[05] = (tmp << 7) | (tmp >> -7); // Integers.RotateLeft(x[05] ^ x[09], 7);
x[10] += x[14]; tmp = x[06] ^ x[10]; x[06] = (tmp << 7) | (tmp >> -7); // Integers.RotateLeft(x[06] ^ x[10], 7);
x[11] += x[15]; tmp = x[07] ^ x[11]; x[07] = (tmp << 7) | (tmp >> -7); // Integers.RotateLeft(x[07] ^ x[11], 7);
x[00] += x[05]; tmp = x[15] ^ x[00]; x[15] = (tmp << 16) | (tmp >> -16); // Integers.RotateLeft(x[15] ^ x[00], 16);
x[01] += x[06]; tmp = x[12] ^ x[01]; x[12] = (tmp << 16) | (tmp >> -16); // Integers.RotateLeft(x[12] ^ x[01], 16);
x[02] += x[07]; tmp = x[13] ^ x[02]; x[13] = (tmp << 16) | (tmp >> -16); // Integers.RotateLeft(x[13] ^ x[02], 16);
x[03] += x[04]; tmp = x[14] ^ x[03]; x[14] = (tmp << 16) | (tmp >> -16); // Integers.RotateLeft(x[14] ^ x[03], 16);
x[10] += x[15]; tmp = x[05] ^ x[10]; x[05] = (tmp << 12) | (tmp >> -12); // Integers.RotateLeft(x[05] ^ x[10], 12);
x[11] += x[12]; tmp = x[06] ^ x[11]; x[06] = (tmp << 12) | (tmp >> -12); // Integers.RotateLeft(x[06] ^ x[11], 12);
x[08] += x[13]; tmp = x[07] ^ x[08]; x[07] = (tmp << 12) | (tmp >> -12); // Integers.RotateLeft(x[07] ^ x[08], 12);
x[09] += x[14]; tmp = x[04] ^ x[09]; x[04] = (tmp << 12) | (tmp >> -12); // Integers.RotateLeft(x[04] ^ x[09], 12);
x[00] += x[05]; tmp = x[15] ^ x[00]; x[15] = (tmp << 8) | (tmp >> -8); // Integers.RotateLeft(x[15] ^ x[00], 8);
x[01] += x[06]; tmp = x[12] ^ x[01]; x[12] = (tmp << 8) | (tmp >> -8); // Integers.RotateLeft(x[12] ^ x[01], 8);
x[02] += x[07]; tmp = x[13] ^ x[02]; x[13] = (tmp << 8) | (tmp >> -8); // Integers.RotateLeft(x[13] ^ x[02], 8);
x[03] += x[04]; tmp = x[14] ^ x[03]; x[14] = (tmp << 8) | (tmp >> -8); // Integers.RotateLeft(x[14] ^ x[03], 8);
x[10] += x[15]; tmp = x[05] ^ x[10]; x[05] = (tmp << 7) | (tmp >> -7); // Integers.RotateLeft(x[05] ^ x[10], 7);
x[11] += x[12]; tmp = x[06] ^ x[11]; x[06] = (tmp << 7) | (tmp >> -7); // Integers.RotateLeft(x[06] ^ x[11], 7);
x[08] += x[13]; tmp = x[07] ^ x[08]; x[07] = (tmp << 7) | (tmp >> -7); // Integers.RotateLeft(x[07] ^ x[08], 7);
x[09] += x[14]; tmp = x[04] ^ x[09]; x[04] = (tmp << 7) | (tmp >> -7); // Integers.RotateLeft(x[04] ^ x[09], 7);
}
for (int i = 0; i < 16; i++)
{
uint n = x[i] + input[i];
output[(i * 4)] = (byte)n;
output[(i * 4) + 1] = (byte)(n >> 8);
output[(i * 4) + 2] = (byte)(n >> 16);
output[(i * 4) + 3] = (byte)(n >> 24);
}
}
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
[MethodImpl(MethodImplOptions.AggressiveInlining)]
internal static unsafe void ImplProcessBlock(ReadOnlySpan<byte> input, Span<byte> output, byte[] keyStream)
{
fixed (byte* pinput = input)
fixed (byte* poutput = output)
fixed (byte* pkeyStream = keyStream)
{
#if UNITY_ANDROID && !UNITY_EDITOR
#if BESTHTTP_WITH_BURST
if (!ImplProcessBlock_Burst(pinput, poutput, pkeyStream))
#endif
{
if ((long)pinput % sizeof(ulong) == 0)
{
#endif
var pulinput = (ulong*)pinput;
var puloutput = (ulong*)poutput;
var pulkeyStream = (ulong*)pkeyStream;
puloutput[7] = pulkeyStream[7] ^ pulinput[7];
puloutput[6] = pulkeyStream[6] ^ pulinput[6];
puloutput[5] = pulkeyStream[5] ^ pulinput[5];
puloutput[4] = pulkeyStream[4] ^ pulinput[4];
puloutput[3] = pulkeyStream[3] ^ pulinput[3];
puloutput[2] = pulkeyStream[2] ^ pulinput[2];
puloutput[1] = pulkeyStream[1] ^ pulinput[1];
puloutput[0] = pulkeyStream[0] ^ pulinput[0];
#if UNITY_ANDROID && !UNITY_EDITOR
}
else
{
for (int i = 0; i < 64; ++i)
output[i] = (byte)(keyStream[i] ^ input[i]);
}
}
#endif
}
}
#if UNITY_ANDROID && !UNITY_EDITOR && BESTHTTP_WITH_BURST
[BurstCompile]
private unsafe static bool ImplProcessBlock_Burst(byte* pinput, byte* poutput, [NoAlias] byte* pkeyStream)
{
if (Neon.IsNeonSupported)
{
for (int offset = 0; offset < 64; offset += 16)
{
var vInput = Neon.vld1q_u8(pinput + offset);
var vKeyStream = Neon.vld1q_u8(pkeyStream + offset);
var vOut = Neon.veorq_u8(vKeyStream, vInput);
Neon.vst1q_u8(poutput + offset, vOut);
}
return true;
}
return false;
}
#endif
#endif
}
}
#endif