CryptXT

Advanced File and Message Encryption Tool

Military-grade encryption with AES-256-GCM, Argon2id key derivation, and HMAC integrity verification.

Features

• AES-256-GCM: Authenticated encryption with built-in integrity verification
• Argon2id: Memory-hard key derivation (resistant to GPU attacks)
• HMAC-SHA256: Additional integrity verification layer
• Cross-Platform: Linux, macOS, Windows
• Modern UI: Beautiful terminal interface with progress indicators

Quick Install

pip install cryptxt

Then run:

cryptxt

Installation Methods

Option 1: pip (Recommended)

Install from PyPI:

pip install cryptxt

Run the application:

cryptxt

Option 2: npx (No installation needed)

Run directly without installing:

npx cryptxt-cli

Option 3: From Source

Clone and install:

git clone https://github.com/vyofgod/CryptXT.git
cd CryptXT
pip install -r requirements.txt
python3 cryptxt.py

Usage

1. Encrypt a Message

cryptxt

• Select option 1 (Encrypt Message)
• Enter your message
• Enter a strong password
• Copy the encrypted Base64 output

2. Decrypt a Message

• Select option 2 (Decrypt Message)
• Paste the encrypted Base64 string
• Enter the password used for encryption

3. Encrypt a File

• Select option 3 (Encrypt File)
• Enter file path (example: document.pdf)
• Enter a strong password
• File will be saved as document.pdf.cryptxt

4. Decrypt a File

• Select option 4 (Decrypt File)
• Enter encrypted file path (example: document.pdf.cryptxt)
• Enter the password used for encryption
• Original file will be restored

Security Specifications

Encryption

• Algorithm: AES-256-GCM
• Key Size: 256 bits
• Nonce: 12 bytes (unique per encryption)
• Auth Tag: 16 bytes (prevents tampering)

Key Derivation

• Primary: Argon2id (3 iterations, 64 MB memory, 4 threads)
• Fallback: PBKDF2-HMAC-SHA256 (600,000 iterations)

Additional Security

• HMAC-SHA256 integrity verification
• 32-byte cryptographically secure salt
• Secure random generation using secrets module

Password Best Practices

Strong passwords:

• Minimum 12 characters
• Mix of uppercase, lowercase, numbers, special characters
• Avoid personal information

Examples:

• Good: MyS3cur3P@ssw0rd!2024
• Bad: password123

Important Notes

• No password recovery - Encryption is irreversible without the correct password
• Backup files before encryption
• Test decryption before deleting originals
• Store passwords securely (use a password manager)

Testing

# Create test file
echo "Test message" > test.txt

# Encrypt
cryptxt
# Select 3, enter: test.txt, password: test123

# Decrypt
cryptxt
# Select 4, enter: test.txt.cryptxt, password: test123

Links

• PyPI: https://pypi.org/project/cryptxt/
• GitHub: https://github.com/vyofgod/CryptXT
• Issues: https://github.com/vyofgod/CryptXT/issues
• Documentation: Full installation guide in INSTALL.md

Contributing

Contributions welcome! Please submit a Pull Request.

License

MIT License - see LICENSE file for details.

Disclaimer

This software is provided "as is" without warranty. While it uses military-grade encryption, always maintain backups of important files.

Protect your data with CryptXT

Version 1.0.1