# File lib/fog/aws/kms.rb, line 55
        def setup_credentials(options)
          @aws_access_key_id     = options[:aws_access_key_id]
          @aws_secret_access_key = options[:aws_secret_access_key]

          @signer = Fog::AWS::SignatureV4.new(@aws_access_key_id, @aws_secret_access_key, @region, 'kms')
        end