Maybe you could try providing pre-made certs when you connect? http://www.espruino.com/Reference#l_tls_connect
@Gordon started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Maybe you could try providing pre-made certs when you connect? http://www.espruino.com/Reference#l_tls_connect