🔐 Cipher Vault — Python CLI Password Manager

Cipher Vault is a simple, lightweight Python command-line password manager that stores passwords in XOR-encrypted form.
It allows you to add, update, delete, list, and securely access passwords saved for different websites.

Passwords are never stored in plain text — they are encrypted and can only be decrypted using your PIN.

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⭐ Features

• 🔒 Secure XOR-based encryption
• 📄 Store website name, username, and encrypted password
• ➕ Add new passwords
• ✏️ Update existing passwords
• ❌ Delete saved passwords
• 👁 View/decrypt password (PIN required)
• 📁 Auto-creates & manages password_manager.txt JSON file
• 🧠 Simple, easy-to-understand reversible encryption
• 🖥 Fully terminal-based CLI app

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🛠 How the Encryption Works

Cipher Vault uses a reversible XOR cipher: encrypted_value = ord(character) ^ key original_character = chr(encrypted_value ^ key)

• key = 123
• Each character of the password is encrypted to a number
• Only someone with the correct PIN (6969) can decrypt it

This technique is lightweight and perfect for learning basic cryptography.

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📁 Project Structure

cipher-vault/ │ ├── cipher_vault.py # Main project code ├── password_manager.txt # JSON file storing encrypted passwords └── README.md # Project documentation

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▶️ How to Run

1. Install Python (3.x)
2. Download or clone this repository
3. Open a terminal in the project directory
4. Run: python cipher_vault.py
5. Use menu options (1–6) to manage your passwords.

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Menu Options

1. List all saved website passwords
2. Add a new password
3. Update an existing password
4. Delete a password
5. Access (View) a password ← requires PIN
6. Exit the program

Example Stored Data (password_manager.txt)

[
    {
        "website": "google.com",
        "username": "bhushan",
        "password": [171, 85, 90]
    }
]
**password is stored in encrypted integer form — never as plain text.

👨‍💻 Author

Bhushan Bhutada
Python beginner exploring encryption techniques and building practical CLI tools.
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