title: How to sign data using .p12 in UWP
body: <p>I have codes to sign data in desktop app.
  But it don't work with UWP because I can't use these namespace</p>
  
  <pre><code>using System.Security.Cryptography;
  using System.Security.Cryptography.Pkcs;
  using System.Security.Cryptography.X509Certificates;
  </code></pre>
  
  <p>This is full <a href="https://onedrive.live.com/redir?resid=678E939916E85863!493926&amp;authkey=!AAjYhB2makZ8AWw&amp;ithint=file%2Ccs" rel="nofollow">source code</a>
  Thank you.</p>