title: What is the encryption used to store downloadable file in _downloadable_files meta key in woocommerce
body: <p>While making custom rest APIs for woocommerce store I found downloadable products are storing downloadable files into post_meta table with following format with key name _downloadable_files</p>
  
  <pre><code>a:1:{s:32:"6d42428daf0e1a7ffdc40b6fc8b310d2";a:4:{s:2:"id";s:32:"6d42428daf0e1a7ffdc40b6fc8b310d2";s:4:"name";s:8:"original";s:4:"file";s:77:"https://xxx.s3.amazonaws.com/fluteef0a289261ff7d8f4666732d862d91bf.mp3";s:13:"previous_hash";s:32:"6d42428daf0e1a7ffdc40b6fc8b310d2";}}
  </code></pre>
  
  <p>Can anyone please help how to figure out this encryption and so that I can make my own APIs for my project. I am stuck here to insert a new downloadable product from my rest api.</p>
  
  <p>Thanks </p>