Socket SSL To Use keytool to Create a Server Certificate https://docs.oracle.com/cd/E19798-01/821-1841/gjrgy/index.html Socket SSL con Java http://chuwiki.chuidiang.org/index.php?title=Socket_SSL_con_Java SSL/TLS for dummies part 3 – Understanding Certificate Authority https://www.wst.space/ssl-part-3-certificate-authority/