Secure Password Manager (PyQt5)

A robust, cross-platform desktop application for securely managing user credentials. Built with Python and PyQt5, emphasizing cryptographic best practices.

Features

• Full CRUD Functionality: Easily Create, Read, Update, and Delete credentials.
• Secure Authentication: Uses a single Master Password to unlock the vault.
• Encrypted Storage: All credentials are encrypted before being stored in an SQLite database.
• Professional GUI: Built using PyQt5 for a clean, native desktop look and feel.

Security Architecture

This project is designed with a strong focus on data security, using industry-standard primitives from the cryptography library.

1. Key Derivation: The Master Password is never stored directly. It is stretched using PBKDF2 with SHA-256 and a high iteration count (480,000+ iterations) and a unique salt to generate a strong, 32-byte encryption key. This process makes brute-force attacks computationally infeasible.
2. Authenticated Encryption: All sensitive data (usernames, passwords) is encrypted using AES-256 GCM (via the Fernet specification). This method not only encrypts the data but also ensures its integrity (guaranteeing that the stored data has not been tampered with).

🛠️ Technologies Used

• Language: Python 3.x
• GUI Framework: PyQt5
• Database: SQLite3
• Cryptography: cryptography library (PBKDF2, Fernet/AES-256 GCM)

Installation and Setup

1. Clone the Repository:

   git clone [YOUR_REPO_URL]
   cd [YOUR_REPO_NAME]

2. Install Dependencies:

   pip install PyQt5 cryptography

3. Run the Application:

   python password_gui.py

First Run: Initialization

On the first run, the application will detect the missing configuration and prompt you to set your new, secure Master Password.

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Now you can run the following commands to add these two new critical files and push everything cleanly:

1. Stage the new files:

   git add .

2. Commit the final project:

   git commit -m "feat: Final project completion with PyQt5 GUI, full CRUD, and crucial documentation/git setup"

3. Push to your remote repository:

   git push