# File lib/action_controller/metal/http_authentication.rb, line 229
      def decode_credentials(header)
        HashWithIndifferentAccess[header.to_s.gsub(/^Digest\s+/,'').split(',').map do |pair|
          key, value = pair.split('=', 2)
          [key.strip, value.to_s.gsub(/^"|"$/,'').delete('\'')]
        end]
      end