prepare_upgrade_legacy_hmac_aes_cbc_cookies?

# File actionpack/lib/action_dispatch/middleware/cookies.rb, line 281
        def prepare_upgrade_legacy_hmac_aes_cbc_cookies?
          request.secret_key_base.present? &&
            request.authenticated_encrypted_cookie_salt.present? &&
            !request.use_authenticated_cookie_encryption
        end