GabrielTofvesson/MLAPI
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Added public primitive hasher class

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This commit is contained in:
Albin Corén 2018-04-23 20:21:34 +02:00
parent 231c60d0c5
commit 0b1146ea33
3 changed files with 68 additions and 20 deletions
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29
MLAPI/Data/Cache.cs
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@ -1,6 +1,5 @@
using System.Collections.Generic;
using System.Security.Cryptography;
using System.Text;
using MLAPI.NetworkingManagerComponents.Binary;
using System.Collections.Generic;
namespace MLAPI.Data
{
@ -14,15 +13,10 @@ namespace MLAPI.Data
if (messageAttributeHashes.ContainsKey(name))
return messageAttributeHashes[name];
using (SHA256Managed sha = new SHA256Managed())
{
byte[] hash = sha.ComputeHash(Encoding.UTF8.GetBytes(name));
ulong value = hash[0] | ((ulong)hash[1] << 8) | ((ulong)hash[2] << 16) | ((ulong)hash[3] << 24) | ((ulong)hash[4] << 32) | ((ulong)hash[5] << 40) | ((ulong)hash[6] << 48) | ((ulong)hash[7] << 56);
//ulong value = hash[0] | ((uint)hash[1] << 8) | ((uint)hash[2] << 16) | ((uint)hash[3] << 24);
messageAttributeHashes.Add(name, value);
messageAttributeNames.Add(value, name);
return value;
}
ulong value = PrimitiveHasher.GetULongHash(name);
messageAttributeHashes.Add(name, value);
messageAttributeNames.Add(value, name);
return value;
}
internal static string GetAttributeMethodName(ulong hash)
@ -38,14 +32,9 @@ namespace MLAPI.Data
if (messageAttributeHashes.ContainsKey(name))
return;
using (SHA256Managed sha = new SHA256Managed())
{
byte[] hash = sha.ComputeHash(Encoding.UTF8.GetBytes(name));
ulong value = hash[0] | ((ulong)hash[1] << 8) | ((ulong)hash[2] << 16) | ((ulong)hash[3] << 24) | ((ulong)hash[4] << 32) | ((ulong)hash[5] << 40) | ((ulong)hash[6] << 48) | ((ulong)hash[7] << 56);
//ulong value = hash[0] | ((uint)hash[1] << 8) | ((uint)hash[2] << 16) | ((uint)hash[3] << 24);
messageAttributeHashes.Add(name, value);
messageAttributeNames.Add(value, name);
}
ulong value = PrimitiveHasher.GetULongHash(name);
messageAttributeHashes.Add(name, value);
messageAttributeNames.Add(value, name);
}
}
}

1
MLAPI/MLAPI.csproj
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@ -89,6 +89,7 @@
<Compile Include="NetworkingManagerComponents\Binary\BitReader.cs" />
<Compile Include="NetworkingManagerComponents\Binary\BinaryHelpers.cs" />
<Compile Include="NetworkingManagerComponents\Binary\BinarySerializer.cs" />
<Compile Include="NetworkingManagerComponents\Binary\PrimitiveHasher.cs" />
<Compile Include="NetworkingManagerComponents\Cryptography\CryptographyHelper.cs" />
<Compile Include="NetworkingManagerComponents\Cryptography\DiffieHellman.cs" />
<Compile Include="NetworkingManagerComponents\Cryptography\EllipticCurve.cs" />

58
MLAPI/NetworkingManagerComponents/Binary/PrimitiveHasher.cs Normal file
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@ -0,0 +1,58 @@
using System.Collections.Generic;
using System.Security.Cryptography;
using System.Text;
namespace MLAPI.NetworkingManagerComponents.Binary
{
public static class PrimitiveHasher
{
private static Dictionary<string, ulong> ulongCachedHashes = new Dictionary<string, ulong>();
private static Dictionary<string, ushort> ushortCachedHashes = new Dictionary<string, ushort>();
private static Dictionary<string, uint> uintCachedHashes = new Dictionary<string, uint>();
public static ulong GetULongHash(string input, bool cache = false)
{
if (cache && ulongCachedHashes.ContainsKey(input))
return ulongCachedHashes[input];
using (SHA256Managed sha = new SHA256Managed())
{
byte[] hash = sha.ComputeHash(Encoding.UTF8.GetBytes(input));
ulong value = hash[0] | ((ulong)hash[1] << 8) | ((ulong)hash[2] << 16) | ((ulong)hash[3] << 24) | ((ulong)hash[4] << 32) | ((ulong)hash[5] << 40) | ((ulong)hash[6] << 48) | ((ulong)hash[7] << 56);
if (cache)
ulongCachedHashes.Add(input, value);
return value;
}
}
public static ulong GetUIntHash(string input, bool cache = false)
{
if (cache && uintCachedHashes.ContainsKey(input))
return ulongCachedHashes[input];
using (SHA256Managed sha = new SHA256Managed())
{
byte[] hash = sha.ComputeHash(Encoding.UTF8.GetBytes(input));
uint value = hash[0] | ((uint)hash[1] << 8) | ((uint)hash[2] << 16) | ((uint)hash[3] << 24);
if (cache)
uintCachedHashes.Add(input, value);
return value;
}
}
public static ushort GetUShortHash(string input, bool cache = false)
{
if (cache && ushortCachedHashes.ContainsKey(input))
return ushortCachedHashes[input];
using (SHA256Managed sha = new SHA256Managed())
{
byte[] hash = sha.ComputeHash(Encoding.UTF8.GetBytes(input));
ushort value = (ushort)(hash[0] | (ushort)(hash[1] << 8));
if (cache)
ushortCachedHashes.Add(input, value);
return value;
}
}
}
}