title: Encrypt/Decrypt files using Carrierwave and storing in S3 (Rails)
body: <p>I need to be able to encrypt files before storing them on S3, and then decrypt them when accessing them. The files will be images, documents, PDF, etc.</p>
  
  <p>I am using Carrierwave to handle the file upload and storage (this is with Ruby on Rails). I am storing them in Amazon S3.</p>
  
  <p>Has anyone done this, or have any ideas how this would be achieved?</p>
  
  <p>Thanks.</p>