Package detailsv0.2.0

password_strength

A password strength estimator. Can be used to show the user whether the password they chose is strong against bruteforce or dictionary attacks.

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pub.dev API documentation Source code

30-day downloads: 194K
Likes: 157
Pub points: 160

Install package

flutter pub add password_strength

Package Overview

Package selection guidance compiled from public package information, community data, and project usage.

A Flutter package that estimates password strength by analyzing resistance to brute force and dictionary attacks. It provides real-time feedback to users, helping them create more secure passwords. The tool evaluates factors like length, character variety, and common patterns, offering a simple way to improve password security within apps. Ideal for authentication flows where user input quality matters.

Use cases

Real-time password validation
Enhancing login form security
Guiding users to stronger passwords
Integrating into registration workflows
Security feedback in password fields
Improving app authentication reliability

Key features

Estimates resistance to brute force attacks
Analyzes dictionary attack vulnerability
Provides instant feedback on password strength
Supports multiple character types (lowercase, uppercase, numbers, symbols)
Lightweight and easy to integrate
Works across all major platforms

Suitable for

Authentication screens
User registration forms
Password creation tools
Security-focused applications
Developers prioritizing user security
Apps requiring strong password enforcement

Considerations

Does not store or transmit passwords
No built-in password hashing
Relies on client-side analysis only
May require additional validation for compliance
Not suitable for high-security environments without extra measures

Original README

Original README snapshot from the linked source repository. Visit the repository for the latest content.

Password Strength Estimator

A basic password strength estimator for Dart. Considers the length of the password, used characters, and whether or not the password appears in the top 10,000 most used passwords.

Usage

import 'package:password_strength/password_strength.dart';

...

double strength = estimatePasswordStrength('passw0rd');

if (strength < 0.3)
  print('This password is weak!');