# File lib/deltacloud/drivers/ec2/ec2_driver.rb, line 279
        def keys(credentials, opts={})
          ec2 = new_client(credentials)
          opts ||= {}
          safely do
            ec2.describe_key_pairs(opts[:id] ? [opts[:id]] : nil).collect do |key|
              convert_key(key)
            end
          end
        end