title: Portable class library for MonoDroid and MonoTouch
body: <p>I want to create PCL for MonoDroid and MonoTouch, to share code AES encryption (RijndaelManaged), but Visual Studio wouldn't let me to do so, instead it forces me to add all other frameworks, message is following: </p>
  
  <blockquote>
    <p>The following frameworks will be selected automatically because they support all of the available functionality that is portable between the other frameworks you have selected: .NET for Windows Store apps, .NET Framework 4.5, Windows Phone 8.</p>
  </blockquote>
  
  <p>and those frameworks doesn't support System.Security.Cryptography namespace.</p>
  
  <p>Files for MonoDroid and MonoTouch are placed in C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETPortable\v4.5\Profile\Profile78\SupportedFrameworks, witch already contained .NET for Windows Store apps.xml, .NET Framework 4.5.xml, Windows Phone 8.xml.</p>
  
  <p>Can somebody please advice how to isolate Mono frameworks from others, do I need new profile or something else.</p>