Generate Ed25519 key openssl

Test specific TLS protocol openssl s_client -connect <host>:443 -tls1_2 </dev/null 2>&1 | grep -E 'Protocol|Cipher' Generate RSA private key openssl genrsa -out private.key 4096 Generate Ed25519 key pair openssl genpkey -algorithm ed25519 -out private.key && openssl pkey -in private.key -pubout -out public.key Create CSR openssl req -new -key private.key -out request.csr -subj '/CN=example.com/O=MyOrg/C=RU' Self-signed certificate openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -days 365 -nodes -subj '/CN=localhost'