CarrierWave::EasyEncryption

The easiest way to encrypt files uploaded to Rails when you're storing with CarrierWave.

Based on carrierwave_securefile, but simpler.

Tested with Ruby 2 and Rails 4.

Installation

Add this line to your application's Gemfile:

gem 'carrerwave_easy_encryption'

And then execute:

$ bundle

Or install it yourself as:

$ gem install carrerwave_easy_encryption

Usage

Add an initializer

CarrierWave::EasyEncryption.configure do |config|
  config.password = "<some long hex digits, e.g. the output of SecureRandom.hex(32)>"
end`

Modify the uploaders you want to encrypt

class MyUploader < CarrierWave::Uploader::Base
  process :encrypt

  def encrypt
    CarrierWave::EasyEncryption::Uploader.secure_file(model, self.file.path.to_s)
  end
end

Add controller actions for decrypting files before downloading

def download
  @model = Model.find(params(:id))
  send_data CarrierWave::EasyEncryption::Downloader.download(@model.my_uploader).string, filename: File.basename(@model.my_uploader.path)
end

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request