title: Get fingerprint of current page's SSL certificate in a Chrome extension
body: <p>I'm attempting to write an extension which verifies the SHA1 fingerprint of a site's SSL certificate with a third party. However it doesn't seem to be possible to do this either through native JavaScript or Chrome's extension APIs.</p>
  
  <p>I found this question which would seem to do what I want: <a href="https://stackoverflow.com/questions/6983401/how-can-i-get-the-ssl-certificate-info-for-the-current-page-in-a-firefox-exten">How can I get the SSL Certificate info for the *current* page in a Firefox Extension</a></p>
  
  <p>But unfortunately it is only applicable to Firefox. Is there any way to do this in a cross browser compatible way, or even just in Chrome?</p>