diff --git a/lib/xBrainLab.Security.Cryptography.dll b/lib/xBrainLab.Security.Cryptography.dll
deleted file mode 100644
index f4727f0..0000000
Binary files a/lib/xBrainLab.Security.Cryptography.dll and /dev/null differ
diff --git a/src/IF.Lastfm.Core/Api/LastAuth.cs b/src/IF.Lastfm.Core/Api/LastAuth.cs
index 965fe29..0a7df77 100644
--- a/src/IF.Lastfm.Core/Api/LastAuth.cs
+++ b/src/IF.Lastfm.Core/Api/LastAuth.cs
@@ -2,10 +2,10 @@
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using Arcnet.MyConvert;
 using IF.Lastfm.Core.Api.Commands.AuthApi;
 using IF.Lastfm.Core.Api.Helpers;
 using IF.Lastfm.Core.Objects;
-using xBrainLab.Security.Cryptography;
 
 namespace IF.Lastfm.Core.Api
 {
@@ -74,7 +74,10 @@ public string GenerateMethodSignature(string method, Dictionary<string, string>
 
             builder.Append(_apiSecret);
 
-            return MD5.GetHashString(builder.ToString());
+            var md5 = builder.ToString().ToMd5();
+
+            return md5;
+
         }
     }
 }
\ No newline at end of file
diff --git a/src/IF.Lastfm.Core/IF.Lastfm.Core.csproj b/src/IF.Lastfm.Core/IF.Lastfm.Core.csproj
index 2e55a38..b623a90 100644
--- a/src/IF.Lastfm.Core/IF.Lastfm.Core.csproj
+++ b/src/IF.Lastfm.Core/IF.Lastfm.Core.csproj
@@ -107,6 +107,9 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
+    <Reference Include="MyConvert">
+      <HintPath>..\..\packages\MyConvert.1.0.1.6\lib\MyConvert.dll</HintPath>
+    </Reference>
     <Reference Include="Newtonsoft.Json">
       <HintPath>..\..\packages\Newtonsoft.Json.6.0.5\lib\portable-net45+wp80+win8+wpa81\Newtonsoft.Json.dll</HintPath>
     </Reference>
@@ -119,9 +122,6 @@
     <Reference Include="System.Net.Http.Primitives">
       <HintPath>..\..\packages\Microsoft.Net.Http.2.2.28\lib\portable-net40+sl4+win8+wp71+wpa81\System.Net.Http.Primitives.dll</HintPath>
     </Reference>
-    <Reference Include="xBrainLab.Security.Cryptography">
-      <HintPath>..\..\lib\xBrainLab.Security.Cryptography.dll</HintPath>
-    </Reference>
   </ItemGroup>
   <ItemGroup>
     <None Include="app.config" />
diff --git a/src/IF.Lastfm.Core/packages.config b/src/IF.Lastfm.Core/packages.config
index 2096199..ca71ac9 100644
--- a/src/IF.Lastfm.Core/packages.config
+++ b/src/IF.Lastfm.Core/packages.config
@@ -3,5 +3,6 @@
   <package id="Microsoft.Bcl" version="1.1.9" targetFramework="portable-net45+win+wpa81+wp80" />
   <package id="Microsoft.Bcl.Build" version="1.0.14" targetFramework="portable-net45+win+wpa81+wp80" />
   <package id="Microsoft.Net.Http" version="2.2.28" targetFramework="portable-net45+win+wpa81+wp80" />
+  <package id="MyConvert" version="1.0.1.6" targetFramework="portable-net45+win+wpa81+wp80" />
   <package id="Newtonsoft.Json" version="6.0.5" targetFramework="portable-net45+win+wpa81+wp80" />
 </packages>
\ No newline at end of file