feat: support file encryption

Author: richardschneider

src/CoreApi/FileSystemApi.cs

@@ -59,6 +59,8 @@ internal FileSystemApi(IpfsClient ipfs)
                 opts.Add($"hash=${options.Hash}");
             if (options.Encoding != MultiBase.DefaultAlgorithmName)
                 opts.Add($"cid-base=${options.Encoding}");
+            if (!string.IsNullOrWhiteSpace(options.ProtectionKey))
+                opts.Add($"protect={options.ProtectionKey}");
             opts.Add($"chunker=size-{options.ChunkSize}");
 
             var json = await ipfs.UploadAsync("add", cancel, stream, name, opts.ToArray());

src/IpfsHttpClient.csproj

@@ -27,7 +27,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Ipfs.Core" Version="0.38.1" />
+    <PackageReference Include="Ipfs.Core" Version="0.39.0" />
     <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
 	  <PackageReference Include="System.Net.Http" Version="4.3.3" Condition="'$(TargetFramework)' == 'netstandard14'" />
     <PackageReference Include="System.Net.Http" Version="4.3.3" Condition="'$(TargetFramework)' == 'net45'" />