Replace internal BouncyCastle with NuGet package

Author: mus65

README.md

@@ -8,8 +8,7 @@ SSH.NET is a Secure Shell (SSH-2) library for .NET, optimized for parallelism.
 
 ## Introduction
 This project was inspired by **Sharp.SSH** library which was ported from java and it seems like was not supported
-for quite some time. This library is a complete rewrite, without any third party dependencies, using parallelism
-to achieve the best performance possible.
+for quite some time. This library is a complete rewrite, using parallelism to achieve the best performance possible.
 
 ## Documentation
 There is MSDN-style class documentation in a .chm file for each release, which you can find in the Assets section

src/Renci.SshNet/Renci.SshNet.csproj

@@ -34,6 +34,10 @@
     <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="[1.0.0,)" />
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="BouncyCastle.Cryptography" Version="[2.3.0,)" />
+  </ItemGroup>
+
   <ItemGroup>
     <None Include="..\..\images\logo\png\SS-NET-icon-h500.png">
       <Pack>True</Pack>