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feat: Implement DefaultCryptoHmac for compliance-aware HMAC operations

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- Added DefaultCryptoHmac class implementing ICryptoHmac interface.
- Introduced purpose-based HMAC computation methods.
- Implemented verification methods for HMACs with constant-time comparison.
- Created HmacAlgorithms and HmacPurpose classes for well-known identifiers.
- Added compliance profile support for HMAC algorithms.
- Included asynchronous methods for HMAC computation from streams.
This commit is contained in:
StellaOps Bot
2025-12-06 00:41:04 +02:00
parent 43c281a8b2
commit f0662dd45f
362 changed files with 8441 additions and 22338 deletions
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24
src/AdvisoryAI/StellaOps.AdvisoryAI.Hosting/StellaOps.AdvisoryAI.Hosting.csproj
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@@ -1,12 +1,12 @@
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</PropertyGroup>
<ItemGroup>
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26
src/AdvisoryAI/StellaOps.AdvisoryAI.WebService/StellaOps.AdvisoryAI.WebService.csproj
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@@ -1,13 +1,13 @@
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<Project Sdk="Microsoft.NET.Sdk.Web">
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26
src/AdvisoryAI/StellaOps.AdvisoryAI.Worker/StellaOps.AdvisoryAI.Worker.csproj
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@@ -1,13 +1,13 @@
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37
src/AdvisoryAI/StellaOps.AdvisoryAI/StellaOps.AdvisoryAI.csproj
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@@ -1,20 +1,21 @@
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<ProjectReference Include="..\..\Concelier\__Libraries\StellaOps.Concelier.Core\StellaOps.Concelier.Core.csproj" />
<ProjectReference Include="..\..\Concelier\__Libraries\StellaOps.Concelier.RawModels\StellaOps.Concelier.RawModels.csproj" />
<ProjectReference Include="..\..\Excititor\__Libraries\StellaOps.Excititor.Core\StellaOps.Excititor.Core.csproj" />
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22
src/AdvisoryAI/StellaOps.AdvisoryAI/Vectorization/DeterministicHashVectorEncoder.cs
View File

@@ -2,6 +2,7 @@ using System.Buffers;
using System.Security.Cryptography;
using System.Text;
using System.Text.RegularExpressions;
using StellaOps.Cryptography;
namespace StellaOps.AdvisoryAI.Vectorization;
@@ -10,22 +11,23 @@ internal interface IVectorEncoder
float[] Encode(string text);
}
internal sealed class DeterministicHashVectorEncoder : IVectorEncoder, IDisposable
internal sealed class DeterministicHashVectorEncoder : IVectorEncoder
{
private const int DefaultDimensions = 64;
private static readonly Regex TokenRegex = new("[A-Za-z0-9]+", RegexOptions.Compiled | RegexOptions.CultureInvariant);
private readonly IncrementalHash _hash;
private readonly ICryptoHash _cryptoHash;
private readonly int _dimensions;
public DeterministicHashVectorEncoder(int dimensions = DefaultDimensions)
public DeterministicHashVectorEncoder(ICryptoHash cryptoHash, int dimensions = DefaultDimensions)
{
ArgumentNullException.ThrowIfNull(cryptoHash);
if (dimensions <= 0)
{
throw new ArgumentOutOfRangeException(nameof(dimensions));
}
_cryptoHash = cryptoHash;
_dimensions = dimensions;
_hash = IncrementalHash.CreateHash(HashAlgorithmName.SHA256);
}
public float[] Encode(string text)
@@ -39,15 +41,12 @@ internal sealed class DeterministicHashVectorEncoder : IVectorEncoder, IDisposab
return vector;
}
Span<byte> hash = stackalloc byte[32];
foreach (Match match in tokenMatches)
{
var token = match.Value.ToLowerInvariant();
var bytes = Encoding.UTF8.GetBytes(token);
_hash.AppendData(bytes);
_hash.GetHashAndReset(hash);
var index = (int)(BitConverter.ToUInt32(hash[..4]) % (uint)_dimensions);
var hash = _cryptoHash.ComputeHashForPurpose(bytes, HashPurpose.Content);
var index = (int)(BitConverter.ToUInt32(hash.AsSpan(0, 4)) % (uint)_dimensions);
vector[index] += 1f;
}
@@ -69,9 +68,4 @@ internal sealed class DeterministicHashVectorEncoder : IVectorEncoder, IDisposab
vector[i] /= length;
}
}
public void Dispose()
{
_hash.Dispose();
}
}

36
src/AdvisoryAI/__Tests/StellaOps.AdvisoryAI.Tests/StellaOps.AdvisoryAI.Tests.csproj
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@@ -1,25 +1,25 @@
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<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>