Contact person: Business Client

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Location: Cairo, Egypt

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"Project Goal: To develop a robust, interactive web application that provides instant, mathematically-sound feedback on password complexity, guiding users to create highly secure passwords based on modern security standards.
Key Features & Deliverables:
We require a full-stack implementation with a focus on both security logic and user experience (UX).User Interface (UI): A clean, responsive design (e.g., using React, Vue, or modern JavaScript) where users can input a password and see immediate feedback.
Real-Time Feedback: Instantaneous scoring and visual display (e.g., a progress bar/meter and a dynamic checklist) as the user types. Comprehensive Security Rules (Core Logic):Minimum Length: Enforce a $\ge 12$ character minimum.
Character Variety: Check for the presence of uppercase, lowercase, numbers, and symbols.
Pattern Avoidance: Logic to detect and penalize easily guessable patterns (consecutive characters (e.g., abc), repeating characters (e.g., aaa), or simple sequences).
Advanced Security Checks (Required):
Compromised Password Check: Integration with or logic to check the input against a predefined list of Top 10k Common/Compromised Passwords or a standard dictionary.
Mathematical Strength Scoring (Entropy Calculation):Implement logic to calculate the password's Entropy (measured in bits).
Formula for Entropy: $E = \log_2(R^L)$, where $R$ is the size of the potential character set and $L$ is the password length. This will provide a mathematically sound strength score.
Code Quality: Well-documented, clean, and modular code demonstrating secure coding practices (e.g., in Python/Django, Node.js/Express, or pure JavaScript).
Skills Required
We are looking for a developer with expertise in:
Full-Stack Development (Frontend and Backend logic).
Algorithm Design and problem-solving.
Strong understanding of Security Principles (Password Best Practices, Entropy).
Excellent UX/UI implementation for real-time interaction." (client-provided description)