title: Where can I get CommonCrypto / CommonCrypto file from?
body: <p>I have a problem with importing <code>CommonCrypto/CommonCrypto</code> or <code>CommonCrypto/CommonDigest</code>. I need a SHA256 for my <code>Swift</code> code.</p>
  
  <p>I found <code>CommonCrypto</code> github site in Cocoapods.</p>
  
  <p><a href="https://github.com/AlanQuatermain/aqtoolkit" rel="nofollow">https://github.com/AlanQuatermain/aqtoolkit</a></p>
  
  <p>So I have downloaded the file from above.
  But I'm getting errors about <code>ARC</code> (I have added Bridging-Header like other tutorials do.)<br>
  The header file's name is <code>NSData+CommonCrypto.h</code> and <code>NSData+CommonCrypto.m</code>.<br>
  It's not a <code>CommonCrypto/CommonCrypto</code> or <code>CommonCrypto/CommonDigest</code>
  Where can I download and get the exact file <code>CommonCrypto</code> for SHA256?</p>