OpenSSL # Generate a Self-Signed Certificate # openssl req \ -newkey rsa:2048 -nodes -keyout domain.key \ -x509 -days 365 -out domain.crt Source: https://www.digitalocean.com/community/tutorials/openssl-essentials-working-with-ssl-certificates-private-keys-and-csrs See also # https://wiki.archlinux.org/title/OpenSSL https://www.openssl.org/