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Strong_password

screenshot of Strong_password

Entropy-based password strength checking for Ruby and Rails.

Github

Overview

StrongPassword is a robust password strength checker designed to enhance the security of applications by ensuring that passwords meet a certain level of complexity. Based on a PHP algorithm developed by Thomas Hruska, it introduces entropy-based evaluations for password strength, making it particularly useful for developers looking to implement secure authentication mechanisms in their applications. Its design is primarily tailored for Ruby on Rails and ActiveModel, maximizing usability for those frameworks while still offering standalone functionality.

This tool not only scrutinizes passwords against established entropy calculation guidelines but also provides customization options, making it a versatile asset for developers who prioritize security. With a straightforward setup and user-friendly integration, StrongPassword can effectively bolster an application’s defenses against weak password vulnerabilities.

Features

  • Entropy Calculation: StrongPassword computes password strength based on NIST-recommended entropy calculations, ensuring robust evaluations against weak passwords.

  • Custom Validator for Rails: Integrates seamlessly with ActiveModel validations, providing a ready-to-use validator for password fields within Rails applications.

  • Flexible Error Messaging: Default messages for weak passwords can be customized through locale files, allowing developers to tailor user feedback according to their application's tone.

  • Standalone Functionality: Capable of functioning independently from Rails, which means it can be used in any Ruby application, providing greater flexibility for developers.

  • Adjustable Minimum Entropy: Features a default minimum entropy setting of 18 bits that can be modified, accommodating various security requirements.

  • Qwerty Adjuster: Utilizes an intelligent filter to analyze keyboard layouts, reducing the strength of easily guessable passwords like "qwerty" variations.

  • Detailed Entropy Insights: Developers can access in-depth entropy calculations, giving them better understanding and control over password strength assessments.