The "OpenSSL Cookbook" book you get when you sign up for notifications about the book at this site[1] is very good. Written by the guy behind SSLLabs, if I rec

The "OpenSSL Cookbook" book you get when you sign up for notifications about the book at this site[1] is very good. Written by the guy behind SSLLabs, if I recall correctly. [1] https://www.feistyduck.com/books/bulletproof-ssl-tls-and-pki/ https://www.feistyduck.com/books/bulletproof-ssl-tls-and-pki...