Check Password Strength

Abstract

1. Introduction

A simple way to check that password strength of a certain passphrase. The library is fully typed.

2. Objective

A simple npm package that checks the password strength of a certain passphrase. A password strength checker based from Javascript RegEx.

This project demonstrates how JavaScript can be applied to a real-world Cybersecurity & Ethical Hacking problem.

4. Technology Stack

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

• Node.js (LTS) and npm
• A modern web browser
• VS Code or any code editor
• Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/deanilvincent/check-password-strength.git
cd check-password-strength

<script src="https://unpkg.com/check-password-strength/dist/umd.cjs"></script>
<script type="text/javascript">
    const passwordStrength = checkPasswordStrength.passwordStrength('pwd123').value; // 'Weak'
</script>

const { passwordStrength } = require('check-password-strength')
// OR
import { passwordStrength } from 'check-password-strength'

console.log(passwordStrength('asdfasdf').value)
// Too weak (It will return Too weak if the value doesn't match the Weak conditions)

console.log(passwordStrength('asdf1234').value)
// Weak

console.log(passwordStrength('Asd1234!').value)
// Medium

console.log(passwordStrength('A@2asdF2020!!*').value)
// Strong

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

• Add logging and alert notifications (email / Telegram)
• Write a threat model document for the tool
• Package it with Docker for safe lab testing

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

1. Which threat or attack does this project defend against?
2. What detection or protection technique is used and what are its limits?
3. How are false positives and false negatives handled?
4. Which cryptographic algorithms or security standards are involved?
5. What legal and ethical rules apply when testing a tool like this?

9. Source Code & License

This project is developed by deanilvincent and published on GitHub under the MIT License. Please follow the license terms and credit the original author when you use or modify this code.