PassCrypt

PassCrypt is a lightweight file encryption and decryption tool built with Python. It uses AES encryption in CTR mode and derives the encryption key directly from a user-provided password using PBKDF2 and SHA256.
No external key files or salt storage — just your password.

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Features

• AES-CTR encryption for secure stream-based file handling
• Key derivation via PBKDF2 with SHA256
• No need to store or manage key files or salt
• Simple CLI interface for encryption and decryption
• Works with any file type (text, binary, media, etc.)
• Linux-friendly: can be installed system-wide as a CLI tool

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Installation

Option 1: Manual Setup (Linux)

1. Clone the repository:

git clone https://github.com/KyrilosKamal/PassCrypt.git
cd PassCrypt

2. Make the script executable:

chmod +x setup.sh

3. Install using setup.sh:

./setup.sh

4. Run the tool:

passcrypt.py

Option 2: Global CLI Installation

Use the provided installer script to make PassCrypt available system-wide:

1. Run the setup script:

chmod +x setup.sh
./setup.sh

2. After installation, you can run PassCrypt from anywhere:

passcrypt

Usage

Once the script is running:

• Choose 1 to encrypt or 2 to decrypt
  
• Enter the full file path (e.g., /home/user/file.txt)
  
• Enter your password
  

Important: The password is the only way to decrypt the file. If you forget it, the data cannot be recovered.

Notes

• AES-CTR mode is symmetric: encryption and decryption use the same logic.
• Salt is derived from the password hash to avoid external storage.
• This tool modifies the file in-place. Make backups if needed.
• Works on Linux, Windows, and macOS with Python 3 installed

Author

Kyrillos Kamal — IT Specialist Engineer, and Cybersecurity Trainee. Crafted with clarity, persistence, and branded elegance.