Developers, designers and common people have different kind of concerns when it comes to Passwords. This repo will help you to achieve what you need in this area.
This is a Gitbook from my previous work.
You are welcome to contributeto both of them.
Documents : You have to have a working knowledge of how computers work. Maybe a little Cryptography, Algorithm, etc.. Or a link to a great description(video, audio, document) about passwords.
A class or function in your preferred language that can be used as a perfect Password Checker.