title: id_rsa.pub is not a public key file
body: <p>I opened my public key in libre office and edited the comment section of the key and then saved. But when I run:</p>
  
  <pre><code>ssh-keygen -l -f id_rsa.pub 
  </code></pre>
  
  <p>I get:</p>
  
  <pre><code>id_rsa.pub is not a public key file.
  </code></pre>
  
  <p>The file is no longer recognized as a public key file. How do I solve this?</p>