# File lib/action_controller/session/cookie_store.rb, line 85
  def ensure_secret_secure(secret)
    # There's no way we can do this check if they've provided a proc for the
    # secret.
    return true if secret.is_a?(Proc)

    if secret.blank?
      raise ArgumentError, %Q{A secret is required to generate an integrity hash for cookie session data. Use config.action_controller.session = { :session_key => "_myapp_session", :secret => "some secret phrase of at least #{SECRET_MIN_LENGTH} characters" } in config/environment.rb}
    end

    if secret.length < SECRET_MIN_LENGTH
      raise ArgumentError, %Q{Secret should be something secure, like "#{CGI::Session.generate_unique_id}".  The value you provided, "#{secret}", is shorter than the minimum length of #{SECRET_MIN_LENGTH} characters}
    end
  end