title: HMAC MD5 with meteor
body: <p>I need to generate an HMAC MD5 hash in my meteor app. I've already looked at crypto-base and crypto-md5 and both don't have HMAC implemented. I've tried copying hmac.js from <a href="https://code.google.com/p/crypto-js/" rel="nofollow">https://code.google.com/p/crypto-js/</a> but I get an error about "this" being undefined.</p>
  
  <p>Does an HMAC implementation exist or do I have to create/port one for meteor ?</p>