Genera CA & certificado digital ( hackingyseguridad.com )

You can get SSL certificate with certbot

Tools for distributing ssl certificates

检查 https 证书是否临近过期时间，并通过 Server酱 通知

一个检查 SSL 证书健康状况的 shell 脚本。

Simple TLS Client/Server with Node.js

Agent plug-in for checking the expiration date of a list of certificates in the file-system.

For a better ESP32 firmware security implementation

Use a self signed local SSL cert on macOS for local development

Generate your own CA and sign certs fast. (maybe I should rename it to "not-so-easy-rsa" or "hardcore-rsa"?)